PDFSign Control

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The PDFSign control signs PDF documents.

Syntax

PDFSign

Remarks

The PDFSign control can sign PDF documents in accordance with a selection of PDF and PAdES signature standards, including basic Adobe signatures (ISO 32000) and PAdES signatures (ETSI EN 319 142-1).

Preparing the Signature

To configure PDFSign to produce the desired signature, first provide the input document as a file (InputFile), byte array (InputData), or stream (SetInputStream) and assign your signing certificate to the SigningCert property. Then indicate where to save the output document by setting OutputFile or calling SetOutputStream.

Optionally specify the Signature* properties and the TimestampServer property, and adjust any chain validation parameters as necessary (please see the Chain Validation Setup section for more details). Finally, call the Sign method.

PDFSign also provides means to customize the appearance of the signature widget to be shown on the document page. You can create your very own signatures (e.g., in the form of your company's logo) by adjusting the widget properties available in the SetWidgetProperty method. Alternatively, you can choose not to associate any widget with your signature by setting the Invisible widget property to .

The Signing Process

Depending on the configuration, the signing process may be as straightforward as calculating the document hash and signing it with the private key, or it may involve the advanced chain validation routine. During the latter, the control may contact external revocation (i.e., CRL and OCSP endpoints) and trust sources to establish the validity of the signing certificate.

If an external TSA server was provided via the TimestampServer property, the control will also contact it to timestamp the new signature.

During signing, PDFSign may fire events to notify your code about certain conditions. For example, if the input document is encrypted but no decryption parameters were found in the Password or DecryptionCert properties, the control will fire either the Password or RecipientInfo event to tell your code that it needs decryption information to be able to continue with the signing. Additionally, the SSLServerAuthentication event will fire if one of the HTTP endpoints involved during the operation (which may be a TSA, CRL, OCSP, or Trusted List service) operates over TLS and needs its certificate to be validated.

Basic Adobe Signatures

A basic (also known as legacy) Adobe signature is an original Adobe Acrobat document signature. This is an outdated form of PDF signature - while PAdES is loosely built on it, this signature type does not support extended features and is not compliant with PAdES. Unless the recipient of your signed documents expects you to specifically use this kind of signature, it is unlikely that you will ever need it.

PAdES Signatures and Profiles

In PAdES, a given signature's profile describes the level of "completeness" of the validation material (i.e., certificates, CRLs, and OCSP responses) included in the signature. For example, signatures compliant with the PAdES B-B or PAdES B-T profiles do not require any validation material at all, whereas signatures compliant with the PAdES B-LTA profile must contain complete validation material.

PAdES B-B

The PAdES B-B profile is the baseline profile that uses the PAdES-BES signature level by default, meaning the signature only contains the signing time and signer information.

Use the following code to create a B-B signature: pdfsign.InputFile = "input.pdf"; pdfsign.OutputFile = "signed.pdf"; pdfsign.SigningCert = new Certificate(CertStoreTypes.cstPFXFile, "cert.pfx", "password", "*"); pdfsign.SignatureProfile = PDFSignSignatureProfiles.pfBaselineB; pdfsign.ValidationPolicy = PDFSignValidationPolicies.vpNone; pdfsign.Sign(); PAdES-EPES

To instead create a PAdES-EPES signature that includes the signature-policy-identifier attribute, set the PolicyHash, PolicyHashAlgorithm, and PolicyId configuration settings before calling the Sign method.

This profile, in both the BES and EPES settings, creates a basic signature that remains valid as long as the signing certificate has not expired or been revoked. Signatures at this level need not contain any validation material.

PAdES B-T

The PAdES B-T profile extends the basic BES or EPES signature by adding a signature timestamp. This timestamp certifies that the signature was created at a specific moment in time. Similar to the B-B profile, signatures at this level need not contain any validation material.

Use the following code to create a B-T signature: pdfsign.InputFile = "input.pdf"; pdfsign.OutputFile = "signed.pdf"; pdfsign.SigningCert = new Certificate(CertStoreTypes.cstPFXFile, "cert.pfx", "password", "*"); pdfsign.SignatureProfile = PDFSignSignatureProfiles.pfBaselineT; pdfsign.TimestampServer = "http://time.certum.pl"; pdfsign.ValidationPolicy = PDFSignValidationPolicies.vpNone; pdfsign.Sign(); PAdES B-LTA

The PAdES B-LTA profile is used to achieve signatures that are equipped with long-term archival (LTA) or long-term validation (LTV) capabilities. It incorporates into the signature all the material required to validate the signature, including signing certificates, timestamping certificates, and revocation information. It also adds a document timestamp, which certifies the integrity of both the document and the complete validation material at a specific moment in time. This guarantees that no relevant certificates were expired or revoked at the signature creation time, and enables the signature to be verified offline.

Creating a B-LTA signature with PDFSign is a two-step process. First Sign the document and add a signature timestamp, setting SignatureProfile appropriately. Then Update the signature to take care of the rest (collect and embed the validation material, and add a document timestamp): pdfsign.InputFile = "input.pdf"; pdfsign.OutputFile = "signed.pdf"; pdfsign.SigningCert = new Certificate(CertStoreTypes.cstPFXFile, "cert.pfx", "password", "*"); pdfsign.SignatureProfile = PDFSignSignatureProfiles.pfBaselineT; pdfsign.TimestampServer = "http://time.certum.pl"; pdfsign.ValidationPolicy = PDFSignValidationPolicies.vpNone; pdfsign.Sign(); // Update the signature to LTV - this will retrieve the necessary revocation // elements, embed them into the document, and add a document timestamp pdfsign.Reset(); pdfsign.InputFile = "signed.pdf"; pdfsign.OutputFile = "updated.pdf"; pdfsign.TimestampServer = "http://time.certum.pl"; pdfsign.Update(); Note that validation material "completeness" can be subjective and depends on several factors, including:

• The working environment. For example, your organization may explicitly trust its own self-signed TSA certificate. Signatures timestamped with this certificate will be considered B-LTA by your organization, but for any external bodies, those signatures would be rendered as B-LT or even B-B, as they do not know or trust the custom TSA certificate.
• The time that has passed since the last document timestamp. If an archived (B-LTA) document is not re-timestamped before its last timestamp expires, it will drop back to a lower signature level.

Chain Validation Setup

Chain validation is a sophisticated, multi-faceted procedure that involves a lot of variables. Depending on the configuration of your operating environment, the specifics of the PKI framework being used, and the validation policy you need to follow, you may want to adjust your chain validation parameters to best fit your requirements. A summary of these parameters is given below.

Note that these parameters apply to the Sign and Update methods in PDFSign as well as the Verify method in PDFVerify, as all three methods execute the chain validation procedure (if it is enabled).

Validation Policy

The ValidationPolicy property dictates how thoroughly the chain will be validated. It includes options to control which checks the control will perform, allowing you to tailor the validation process to meet your specific security needs. For example, if it is not essential to check each certificate's revocation status, set this property to vpFullNoRevocation.

Revocation

The revocation aspect of chain validation is controlled by the RevocationCheck property, which allows you to choose between and prioritize revocation origins. Note that OCSP sources are often preferred to CRL endpoints because of their real-time capability and the smaller size of the responses they produce.

Trust

The trust aspect of chain validation is controlled by the TrustSources property, which allows you to specify the locations in which the control will search for trust anchors. Local system stores, your own trusted root certificates (via the TrustedCerts property), and Trusted Lists (via the TrustedLists property) are all supported.

Offline Mode

The OfflineMode property provides the ability to sign or verify the document without contacting online sources. If this property is enabled, the control will only use KnownCerts, TrustedCerts, data structures within the document itself, and revocation and Trusted List data that it previously saved to its internal cache when looking for missing validation material.

Property List

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The following is the full list of the properties of the control with short descriptions. Click on the links for further details.

Method List

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The following is the full list of the methods of the control with short descriptions. Click on the links for further details.

Event List

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The following is the full list of the events fired by the control with short descriptions. Click on the links for further details.

Config Settings

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The following is a list of config settings for the control with short descriptions. Click on the links for further details.

AttachmentCount Property (PDFSign Control)

The number of records in the Attachment arrays.

Syntax

pdfsigncontrol.AttachmentCount[=integer]

Default Value

0

Remarks

This property controls the size of the following arrays:

• AttachmentContentType
• AttachmentCreationDate
• AttachmentData
• AttachmentDescription
• AttachmentFileName
• AttachmentModificationDate
• AttachmentName
• AttachmentSize

The array indices start at 0 and end at AttachmentCount - 1.

This property is not available at design time.

Data Type

Integer

AttachmentContentType Property (PDFSign Control)

The content type of the attachment.

Syntax

pdfsigncontrol.AttachmentContentType(AttachmentIndex)[=string]

Default Value

""

Remarks

The content type of the attachment.

The AttachmentIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttachmentCount property.

This property is not available at design time.

Data Type

String

AttachmentCreationDate Property (PDFSign Control)

The creation date of the attachment.

Syntax

pdfsigncontrol.AttachmentCreationDate(AttachmentIndex)[=string]

Default Value

""

Remarks

The creation date of the attachment.

The AttachmentIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttachmentCount property.

This property is not available at design time.

Data Type

String

AttachmentData Property (PDFSign Control)

The raw data of the attachment.

Syntax

pdfsigncontrol.AttachmentData(AttachmentIndex)[=string]

Default Value

""

Remarks

The raw data of the attachment.

If AttachmentOutputStream is not set to a valid stream, the control will write to this property when an empty string is passed to the SaveAttachment method.

The AttachmentIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttachmentCount property.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .AttachmentDataB.

This property is not available at design time.

Data Type

Binary String

AttachmentDescription Property (PDFSign Control)

A textual description of the attachment.

Syntax

pdfsigncontrol.AttachmentDescription(AttachmentIndex)[=string]

Default Value

""

Remarks

A textual description of the attachment.

The AttachmentIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttachmentCount property.

This property is not available at design time.

Data Type

String

AttachmentFileName Property (PDFSign Control)

The path and filename of the attachment.

Syntax

pdfsigncontrol.AttachmentFileName(AttachmentIndex)[=string]

Default Value

""

Remarks

The path and filename of the attachment.

The AttachmentIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttachmentCount property.

This property is not available at design time.

Data Type

String

AttachmentModificationDate Property (PDFSign Control)

The date and time of the file's last modification.

Syntax

pdfsigncontrol.AttachmentModificationDate(AttachmentIndex)[=string]

Default Value

""

Remarks

The date and time of the file's last modification.

The AttachmentIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttachmentCount property.

This property is not available at design time.

Data Type

String

AttachmentName Property (PDFSign Control)

The name of the attachment.

Syntax

pdfsigncontrol.AttachmentName(AttachmentIndex)[=string]

Default Value

""

Remarks

The name of the attachment.

The AttachmentIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttachmentCount property.

This property is not available at design time.

Data Type

String

AttachmentSize Property (PDFSign Control)

The attachment's size in bytes.

Syntax

pdfsigncontrol.AttachmentSize(AttachmentIndex)

Default Value

0

Remarks

The attachment's size in bytes.

The AttachmentIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttachmentCount property.

This property is read-only and not available at design time.

Data Type

Long64

BlockedCertCount Property (PDFSign Control)

The number of records in the BlockedCert arrays.

Syntax

pdfsigncontrol.BlockedCertCount[=integer]

Default Value

0

Remarks

This property controls the size of the following arrays:

• BlockedCertEffectiveDate
• BlockedCertEncoded
• BlockedCertExpirationDate
• BlockedCertExtendedKeyUsage
• BlockedCertFingerprint
• BlockedCertFingerprintSHA1
• BlockedCertFingerprintSHA256
• BlockedCertIssuer
• BlockedCertPrivateKey
• BlockedCertPrivateKeyAvailable
• BlockedCertPrivateKeyContainer
• BlockedCertPublicKey
• BlockedCertPublicKeyAlgorithm
• BlockedCertPublicKeyLength
• BlockedCertSerialNumber
• BlockedCertSignatureAlgorithm
• BlockedCertStore
• BlockedCertStorePassword
• BlockedCertStoreType
• BlockedCertSubject
• BlockedCertSubjectAltNames
• BlockedCertThumbprintMD5
• BlockedCertThumbprintSHA1
• BlockedCertThumbprintSHA256
• BlockedCertUsage
• BlockedCertUsageFlags
• BlockedCertVersion

The array indices start at 0 and end at BlockedCertCount - 1.

This property is not available at design time.

Data Type

Integer

BlockedCertEffectiveDate Property (PDFSign Control)

The date on which this certificate becomes valid.

Syntax

pdfsigncontrol.BlockedCertEffectiveDate(BlockedCertIndex)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertExpirationDate Property (PDFSign Control)

The date on which the certificate expires.

Syntax

pdfsigncontrol.BlockedCertExpirationDate(BlockedCertIndex)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertExtendedKeyUsage Property (PDFSign Control)

A comma-delimited list of extended key usage identifiers.

Syntax

pdfsigncontrol.BlockedCertExtendedKeyUsage(BlockedCertIndex)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertFingerprint Property (PDFSign Control)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

pdfsigncontrol.BlockedCertFingerprint(BlockedCertIndex)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertFingerprintSHA1 Property (PDFSign Control)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

pdfsigncontrol.BlockedCertFingerprintSHA1(BlockedCertIndex)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertFingerprintSHA256 Property (PDFSign Control)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

pdfsigncontrol.BlockedCertFingerprintSHA256(BlockedCertIndex)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertIssuer Property (PDFSign Control)

The issuer of the certificate.

Syntax

pdfsigncontrol.BlockedCertIssuer(BlockedCertIndex)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertPrivateKey Property (PDFSign Control)

The private key of the certificate (if available).

Syntax

pdfsigncontrol.BlockedCertPrivateKey(BlockedCertIndex)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The BlockedCertPrivateKey may be available but not exportable. In this case, BlockedCertPrivateKey returns an empty string.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertPrivateKeyAvailable Property (PDFSign Control)

Whether a PrivateKey is available for the selected certificate.

Syntax

pdfsigncontrol.BlockedCertPrivateKeyAvailable(BlockedCertIndex)

Default Value

False

Remarks

Whether a BlockedCertPrivateKey is available for the selected certificate. If BlockedCertPrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

Boolean

BlockedCertPrivateKeyContainer Property (PDFSign Control)

The name of the PrivateKey container for the certificate (if available).

Syntax

pdfsigncontrol.BlockedCertPrivateKeyContainer(BlockedCertIndex)

Default Value

""

Remarks

The name of the BlockedCertPrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertPublicKey Property (PDFSign Control)

The public key of the certificate.

Syntax

pdfsigncontrol.BlockedCertPublicKey(BlockedCertIndex)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertPublicKeyAlgorithm Property (PDFSign Control)

The textual description of the certificate's public key algorithm.

Syntax

pdfsigncontrol.BlockedCertPublicKeyAlgorithm(BlockedCertIndex)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertPublicKeyLength Property (PDFSign Control)

The length of the certificate's public key (in bits).

Syntax

pdfsigncontrol.BlockedCertPublicKeyLength(BlockedCertIndex)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

BlockedCertSerialNumber Property (PDFSign Control)

The serial number of the certificate encoded as a string.

Syntax

pdfsigncontrol.BlockedCertSerialNumber(BlockedCertIndex)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertSignatureAlgorithm Property (PDFSign Control)

The text description of the certificate's signature algorithm.

Syntax

pdfsigncontrol.BlockedCertSignatureAlgorithm(BlockedCertIndex)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertStore Property (PDFSign Control)

The name of the certificate store for the client certificate.

Syntax

pdfsigncontrol.BlockedCertStore(BlockedCertIndex)[=string]

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The BlockedCertStoreType property denotes the type of the certificate store specified by BlockedCertStore. If the store is password-protected, specify the password in BlockedCertStorePassword.

BlockedCertStore is used in conjunction with the BlockedCertSubject property to specify client certificates. If BlockedCertStore has a value, and BlockedCertSubject or BlockedCertEncoded is set, a search for a certificate is initiated. Please see the BlockedCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .BlockedCertStoreB.

This property is not available at design time.

Data Type

Binary String

BlockedCertStorePassword Property (PDFSign Control)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

pdfsigncontrol.BlockedCertStorePassword(BlockedCertIndex)[=string]

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is not available at design time.

Data Type

String

BlockedCertStoreType Property (PDFSign Control)

The type of certificate store for this certificate.

Syntax

pdfsigncontrol.BlockedCertStoreType(BlockedCertIndex)[=integer]

Possible Values

cstUser(0), 
cstMachine(1), 
cstPFXFile(2), 
cstPFXBlob(3), 
cstJKSFile(4), 
cstJKSBlob(5), 
cstPEMKeyFile(6), 
cstPEMKeyBlob(7), 
cstPublicKeyFile(8), 
cstPublicKeyBlob(9), 
cstSSHPublicKeyBlob(10), 
cstP7BFile(11), 
cstP7BBlob(12), 
cstSSHPublicKeyFile(13), 
cstPPKFile(14), 
cstPPKBlob(15), 
cstXMLFile(16), 
cstXMLBlob(17), 
cstJWKFile(18), 
cstJWKBlob(19), 
cstSecurityKey(20), 
cstBCFKSFile(21), 
cstBCFKSBlob(22), 
cstPKCS11(23), 
cstAuto(99)

Default Value

0

Remarks

The type of certificate store for this certificate.

The control supports both public and private keys in a variety of formats. When the cstAuto value is used, the control will automatically determine the type. This property can take one of the following values:

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is not available at design time.

Data Type

Integer

BlockedCertSubjectAltNames Property (PDFSign Control)

Comma-separated lists of alternative subject names for the certificate.

Syntax

pdfsigncontrol.BlockedCertSubjectAltNames(BlockedCertIndex)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertThumbprintMD5 Property (PDFSign Control)

The MD5 hash of the certificate.

Syntax

pdfsigncontrol.BlockedCertThumbprintMD5(BlockedCertIndex)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertThumbprintSHA1 Property (PDFSign Control)

The SHA-1 hash of the certificate.

Syntax

pdfsigncontrol.BlockedCertThumbprintSHA1(BlockedCertIndex)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertThumbprintSHA256 Property (PDFSign Control)

The SHA-256 hash of the certificate.

Syntax

pdfsigncontrol.BlockedCertThumbprintSHA256(BlockedCertIndex)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertUsage Property (PDFSign Control)

The text description of UsageFlags .

Syntax

pdfsigncontrol.BlockedCertUsage(BlockedCertIndex)

Default Value

""

Remarks

The text description of BlockedCertUsageFlags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertUsageFlags Property (PDFSign Control)

The flags that show intended use for the certificate.

Syntax

pdfsigncontrol.BlockedCertUsageFlags(BlockedCertIndex)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of BlockedCertUsageFlags is a combination of the following flags:

Please see the BlockedCertUsage property for a text representation of BlockedCertUsageFlags.

This functionality currently is not available when the provider is OpenSSL.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

BlockedCertVersion Property (PDFSign Control)

The certificate's version number.

Syntax

pdfsigncontrol.BlockedCertVersion(BlockedCertIndex)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

String

BlockedCertSubject Property (PDFSign Control)

The subject of the certificate used for client authentication.

Syntax

pdfsigncontrol.BlockedCertSubject(BlockedCertIndex)[=string]

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is not available at design time.

Data Type

String

BlockedCertEncoded Property (PDFSign Control)

The certificate (PEM/Base64 encoded).

Syntax

pdfsigncontrol.BlockedCertEncoded(BlockedCertIndex)[=string]

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The BlockedCertStore and BlockedCertSubject properties also may be used to specify a certificate.

When BlockedCertEncoded is set, a search is initiated in the current BlockedCertStore for the private key of the certificate. If the key is found, BlockedCertSubject is updated to reflect the full subject of the selected certificate; otherwise, BlockedCertSubject is set to an empty string.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .BlockedCertEncodedB.

This property is not available at design time.

Data Type

Binary String

DecryptionCertEffectiveDate Property (PDFSign Control)

The date on which this certificate becomes valid.

Syntax

pdfsigncontrol.DecryptionCertEffectiveDate

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertExpirationDate Property (PDFSign Control)

The date on which the certificate expires.

Syntax

pdfsigncontrol.DecryptionCertExpirationDate

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertExtendedKeyUsage Property (PDFSign Control)

A comma-delimited list of extended key usage identifiers.

Syntax

pdfsigncontrol.DecryptionCertExtendedKeyUsage

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only and not available at design time.

Data Type

String

DecryptionCertFingerprint Property (PDFSign Control)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

pdfsigncontrol.DecryptionCertFingerprint

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only and not available at design time.

Data Type

String

DecryptionCertFingerprintSHA1 Property (PDFSign Control)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

pdfsigncontrol.DecryptionCertFingerprintSHA1

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only and not available at design time.

Data Type

String

DecryptionCertFingerprintSHA256 Property (PDFSign Control)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

pdfsigncontrol.DecryptionCertFingerprintSHA256

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only and not available at design time.

Data Type

String

DecryptionCertIssuer Property (PDFSign Control)

The issuer of the certificate.

Syntax

pdfsigncontrol.DecryptionCertIssuer

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertPrivateKey Property (PDFSign Control)

The private key of the certificate (if available).

Syntax

pdfsigncontrol.DecryptionCertPrivateKey

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The DecryptionCertPrivateKey may be available but not exportable. In this case, DecryptionCertPrivateKey returns an empty string.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertPrivateKeyAvailable Property (PDFSign Control)

Whether a PrivateKey is available for the selected certificate.

Syntax

pdfsigncontrol.DecryptionCertPrivateKeyAvailable

Default Value

False

Remarks

Whether a DecryptionCertPrivateKey is available for the selected certificate. If DecryptionCertPrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only and not available at design time.

Data Type

Boolean

DecryptionCertPrivateKeyContainer Property (PDFSign Control)

The name of the PrivateKey container for the certificate (if available).

Syntax

pdfsigncontrol.DecryptionCertPrivateKeyContainer

Default Value

""

Remarks

The name of the DecryptionCertPrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertPublicKey Property (PDFSign Control)

The public key of the certificate.

Syntax

pdfsigncontrol.DecryptionCertPublicKey

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertPublicKeyAlgorithm Property (PDFSign Control)

The textual description of the certificate's public key algorithm.

Syntax

pdfsigncontrol.DecryptionCertPublicKeyAlgorithm

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertPublicKeyLength Property (PDFSign Control)

The length of the certificate's public key (in bits).

Syntax

pdfsigncontrol.DecryptionCertPublicKeyLength

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only and not available at design time.

Data Type

Integer

DecryptionCertSerialNumber Property (PDFSign Control)

The serial number of the certificate encoded as a string.

Syntax

pdfsigncontrol.DecryptionCertSerialNumber

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertSignatureAlgorithm Property (PDFSign Control)

The text description of the certificate's signature algorithm.

Syntax

pdfsigncontrol.DecryptionCertSignatureAlgorithm

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertStore Property (PDFSign Control)

The name of the certificate store for the client certificate.

Syntax

pdfsigncontrol.DecryptionCertStore[=string]

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The DecryptionCertStoreType property denotes the type of the certificate store specified by DecryptionCertStore. If the store is password-protected, specify the password in DecryptionCertStorePassword.

DecryptionCertStore is used in conjunction with the DecryptionCertSubject property to specify client certificates. If DecryptionCertStore has a value, and DecryptionCertSubject or DecryptionCertEncoded is set, a search for a certificate is initiated. Please see the DecryptionCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

To read or write binary data to the property, a Variant (Byte Array) version is provided in .DecryptionCertStoreB.

This property is not available at design time.

Data Type

Binary String

DecryptionCertStorePassword Property (PDFSign Control)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

pdfsigncontrol.DecryptionCertStorePassword[=string]

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

This property is not available at design time.

Data Type

String

DecryptionCertStoreType Property (PDFSign Control)

The type of certificate store for this certificate.

Syntax

pdfsigncontrol.DecryptionCertStoreType[=integer]

Possible Values

cstUser(0), 
cstMachine(1), 
cstPFXFile(2), 
cstPFXBlob(3), 
cstJKSFile(4), 
cstJKSBlob(5), 
cstPEMKeyFile(6), 
cstPEMKeyBlob(7), 
cstPublicKeyFile(8), 
cstPublicKeyBlob(9), 
cstSSHPublicKeyBlob(10), 
cstP7BFile(11), 
cstP7BBlob(12), 
cstSSHPublicKeyFile(13), 
cstPPKFile(14), 
cstPPKBlob(15), 
cstXMLFile(16), 
cstXMLBlob(17), 
cstJWKFile(18), 
cstJWKBlob(19), 
cstSecurityKey(20), 
cstBCFKSFile(21), 
cstBCFKSBlob(22), 
cstPKCS11(23), 
cstAuto(99)

Default Value

0

Remarks

The type of certificate store for this certificate.

The control supports both public and private keys in a variety of formats. When the cstAuto value is used, the control will automatically determine the type. This property can take one of the following values:

This property is not available at design time.

Data Type

Integer

DecryptionCertSubjectAltNames Property (PDFSign Control)

Comma-separated lists of alternative subject names for the certificate.

Syntax

pdfsigncontrol.DecryptionCertSubjectAltNames

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertThumbprintMD5 Property (PDFSign Control)

The MD5 hash of the certificate.

Syntax

pdfsigncontrol.DecryptionCertThumbprintMD5

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertThumbprintSHA1 Property (PDFSign Control)

The SHA-1 hash of the certificate.

Syntax

pdfsigncontrol.DecryptionCertThumbprintSHA1

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertThumbprintSHA256 Property (PDFSign Control)

The SHA-256 hash of the certificate.

Syntax

pdfsigncontrol.DecryptionCertThumbprintSHA256

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertUsage Property (PDFSign Control)

The text description of UsageFlags .

Syntax

pdfsigncontrol.DecryptionCertUsage

Default Value

""

Remarks

The text description of DecryptionCertUsageFlags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only and not available at design time.

Data Type

String

DecryptionCertUsageFlags Property (PDFSign Control)

The flags that show intended use for the certificate.

Syntax

pdfsigncontrol.DecryptionCertUsageFlags

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of DecryptionCertUsageFlags is a combination of the following flags:

Please see the DecryptionCertUsage property for a text representation of DecryptionCertUsageFlags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only and not available at design time.

Data Type

Integer

DecryptionCertVersion Property (PDFSign Control)

The certificate's version number.

Syntax

pdfsigncontrol.DecryptionCertVersion

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only and not available at design time.

Data Type

String

DecryptionCertSubject Property (PDFSign Control)

The subject of the certificate used for client authentication.

Syntax

pdfsigncontrol.DecryptionCertSubject[=string]

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

This property is not available at design time.

Data Type

String

DecryptionCertEncoded Property (PDFSign Control)

The certificate (PEM/Base64 encoded).

Syntax

pdfsigncontrol.DecryptionCertEncoded[=string]

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The DecryptionCertStore and DecryptionCertSubject properties also may be used to specify a certificate.

When DecryptionCertEncoded is set, a search is initiated in the current DecryptionCertStore for the private key of the certificate. If the key is found, DecryptionCertSubject is updated to reflect the full subject of the selected certificate; otherwise, DecryptionCertSubject is set to an empty string.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .DecryptionCertEncodedB.

This property is not available at design time.

Data Type

Binary String

DocumentCertCount Property (PDFSign Control)

The number of records in the DocumentCert arrays.

Syntax

pdfsigncontrol.DocumentCertCount

Default Value

0

Remarks

This property controls the size of the following arrays:

• DocumentCertEffectiveDate
• DocumentCertEncoded
• DocumentCertExpirationDate
• DocumentCertExtendedKeyUsage
• DocumentCertFingerprint
• DocumentCertFingerprintSHA1
• DocumentCertFingerprintSHA256
• DocumentCertIssuer
• DocumentCertPrivateKey
• DocumentCertPrivateKeyAvailable
• DocumentCertPrivateKeyContainer
• DocumentCertPublicKey
• DocumentCertPublicKeyAlgorithm
• DocumentCertPublicKeyLength
• DocumentCertSerialNumber
• DocumentCertSignatureAlgorithm
• DocumentCertStore
• DocumentCertStorePassword
• DocumentCertStoreType
• DocumentCertSubject
• DocumentCertSubjectAltNames
• DocumentCertThumbprintMD5
• DocumentCertThumbprintSHA1
• DocumentCertThumbprintSHA256
• DocumentCertUsage
• DocumentCertUsageFlags
• DocumentCertVersion

The array indices start at 0 and end at DocumentCertCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

DocumentCertEffectiveDate Property (PDFSign Control)

The date on which this certificate becomes valid.

Syntax

pdfsigncontrol.DocumentCertEffectiveDate(DocumentCertIndex)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertExpirationDate Property (PDFSign Control)

The date on which the certificate expires.

Syntax

pdfsigncontrol.DocumentCertExpirationDate(DocumentCertIndex)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertExtendedKeyUsage Property (PDFSign Control)

A comma-delimited list of extended key usage identifiers.

Syntax

pdfsigncontrol.DocumentCertExtendedKeyUsage(DocumentCertIndex)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertFingerprint Property (PDFSign Control)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

pdfsigncontrol.DocumentCertFingerprint(DocumentCertIndex)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertFingerprintSHA1 Property (PDFSign Control)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

pdfsigncontrol.DocumentCertFingerprintSHA1(DocumentCertIndex)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertFingerprintSHA256 Property (PDFSign Control)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

pdfsigncontrol.DocumentCertFingerprintSHA256(DocumentCertIndex)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertIssuer Property (PDFSign Control)

The issuer of the certificate.

Syntax

pdfsigncontrol.DocumentCertIssuer(DocumentCertIndex)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertPrivateKey Property (PDFSign Control)

The private key of the certificate (if available).

Syntax

pdfsigncontrol.DocumentCertPrivateKey(DocumentCertIndex)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The DocumentCertPrivateKey may be available but not exportable. In this case, DocumentCertPrivateKey returns an empty string.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertPrivateKeyAvailable Property (PDFSign Control)

Whether a PrivateKey is available for the selected certificate.

Syntax

pdfsigncontrol.DocumentCertPrivateKeyAvailable(DocumentCertIndex)

Default Value

False

Remarks

Whether a DocumentCertPrivateKey is available for the selected certificate. If DocumentCertPrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

Boolean

DocumentCertPrivateKeyContainer Property (PDFSign Control)

The name of the PrivateKey container for the certificate (if available).

Syntax

pdfsigncontrol.DocumentCertPrivateKeyContainer(DocumentCertIndex)

Default Value

""

Remarks

The name of the DocumentCertPrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertPublicKey Property (PDFSign Control)

The public key of the certificate.

Syntax

pdfsigncontrol.DocumentCertPublicKey(DocumentCertIndex)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertPublicKeyAlgorithm Property (PDFSign Control)

The textual description of the certificate's public key algorithm.

Syntax

pdfsigncontrol.DocumentCertPublicKeyAlgorithm(DocumentCertIndex)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertPublicKeyLength Property (PDFSign Control)

The length of the certificate's public key (in bits).

Syntax

pdfsigncontrol.DocumentCertPublicKeyLength(DocumentCertIndex)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

DocumentCertSerialNumber Property (PDFSign Control)

The serial number of the certificate encoded as a string.

Syntax

pdfsigncontrol.DocumentCertSerialNumber(DocumentCertIndex)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertSignatureAlgorithm Property (PDFSign Control)

The text description of the certificate's signature algorithm.

Syntax

pdfsigncontrol.DocumentCertSignatureAlgorithm(DocumentCertIndex)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertStore Property (PDFSign Control)

The name of the certificate store for the client certificate.

Syntax

pdfsigncontrol.DocumentCertStore(DocumentCertIndex)

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The DocumentCertStoreType property denotes the type of the certificate store specified by DocumentCertStore. If the store is password-protected, specify the password in DocumentCertStorePassword.

DocumentCertStore is used in conjunction with the DocumentCertSubject property to specify client certificates. If DocumentCertStore has a value, and DocumentCertSubject or DocumentCertEncoded is set, a search for a certificate is initiated. Please see the DocumentCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .DocumentCertStoreB.

This property is read-only and not available at design time.

Data Type

Binary String

DocumentCertStorePassword Property (PDFSign Control)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

pdfsigncontrol.DocumentCertStorePassword(DocumentCertIndex)

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertStoreType Property (PDFSign Control)

The type of certificate store for this certificate.

Syntax

pdfsigncontrol.DocumentCertStoreType(DocumentCertIndex)

Possible Values

cstUser(0), 
cstMachine(1), 
cstPFXFile(2), 
cstPFXBlob(3), 
cstJKSFile(4), 
cstJKSBlob(5), 
cstPEMKeyFile(6), 
cstPEMKeyBlob(7), 
cstPublicKeyFile(8), 
cstPublicKeyBlob(9), 
cstSSHPublicKeyBlob(10), 
cstP7BFile(11), 
cstP7BBlob(12), 
cstSSHPublicKeyFile(13), 
cstPPKFile(14), 
cstPPKBlob(15), 
cstXMLFile(16), 
cstXMLBlob(17), 
cstJWKFile(18), 
cstJWKBlob(19), 
cstSecurityKey(20), 
cstBCFKSFile(21), 
cstBCFKSBlob(22), 
cstPKCS11(23), 
cstAuto(99)

Default Value

0

Remarks

The type of certificate store for this certificate.

The control supports both public and private keys in a variety of formats. When the cstAuto value is used, the control will automatically determine the type. This property can take one of the following values:

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

DocumentCertSubjectAltNames Property (PDFSign Control)

Comma-separated lists of alternative subject names for the certificate.

Syntax

pdfsigncontrol.DocumentCertSubjectAltNames(DocumentCertIndex)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertThumbprintMD5 Property (PDFSign Control)

The MD5 hash of the certificate.

Syntax

pdfsigncontrol.DocumentCertThumbprintMD5(DocumentCertIndex)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertThumbprintSHA1 Property (PDFSign Control)

The SHA-1 hash of the certificate.

Syntax

pdfsigncontrol.DocumentCertThumbprintSHA1(DocumentCertIndex)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertThumbprintSHA256 Property (PDFSign Control)

The SHA-256 hash of the certificate.

Syntax

pdfsigncontrol.DocumentCertThumbprintSHA256(DocumentCertIndex)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertUsage Property (PDFSign Control)

The text description of UsageFlags .

Syntax

pdfsigncontrol.DocumentCertUsage(DocumentCertIndex)

Default Value

""

Remarks

The text description of DocumentCertUsageFlags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertUsageFlags Property (PDFSign Control)

The flags that show intended use for the certificate.

Syntax

pdfsigncontrol.DocumentCertUsageFlags(DocumentCertIndex)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of DocumentCertUsageFlags is a combination of the following flags:

Please see the DocumentCertUsage property for a text representation of DocumentCertUsageFlags.

This functionality currently is not available when the provider is OpenSSL.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

DocumentCertVersion Property (PDFSign Control)

The certificate's version number.

Syntax

pdfsigncontrol.DocumentCertVersion(DocumentCertIndex)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertSubject Property (PDFSign Control)

The subject of the certificate used for client authentication.

Syntax

pdfsigncontrol.DocumentCertSubject(DocumentCertIndex)

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

This property is read-only and not available at design time.

Data Type

String

DocumentCertEncoded Property (PDFSign Control)

The certificate (PEM/Base64 encoded).

Syntax

pdfsigncontrol.DocumentCertEncoded(DocumentCertIndex)

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The DocumentCertStore and DocumentCertSubject properties also may be used to specify a certificate.

When DocumentCertEncoded is set, a search is initiated in the current DocumentCertStore for the private key of the certificate. If the key is found, DocumentCertSubject is updated to reflect the full subject of the selected certificate; otherwise, DocumentCertSubject is set to an empty string.

The DocumentCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the DocumentCertCount property.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .DocumentCertEncodedB.

This property is read-only and not available at design time.

Data Type

Binary String

FirewallAutoDetect Property (PDFSign Control)

Whether to automatically detect and use firewall system settings, if available.

Syntax

pdfsigncontrol.FirewallAutoDetect[=boolean]

Default Value

False

Remarks

Whether to automatically detect and use firewall system settings, if available.

Data Type

Boolean

FirewallType Property (PDFSign Control)

The type of firewall to connect through.

Syntax

pdfsigncontrol.FirewallType[=integer]

Possible Values

fwNone(0), 
fwTunnel(1), 
fwSOCKS4(2), 
fwSOCKS5(3), 
fwSOCKS4A(10)

Default Value

0

Remarks

The type of firewall to connect through. The applicable values are as follows:

Data Type

Integer

FirewallHost Property (PDFSign Control)

The name or IP address of the firewall (optional).

Syntax

pdfsigncontrol.FirewallHost[=string]

Default Value

""

Remarks

The name or IP address of the firewall (optional). If a FirewallHost is given, the requested connections will be authenticated through the specified firewall when connecting.

If this property is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, the control fails with an error.

Data Type

String

FirewallPassword Property (PDFSign Control)

A password if authentication is to be used when connecting through the firewall.

Syntax

pdfsigncontrol.FirewallPassword[=string]

Default Value

""

Remarks

A password if authentication is to be used when connecting through the firewall. If FirewallHost is specified, the FirewallUser and FirewallPassword properties are used to connect and authenticate to the given firewall. If the authentication fails, the control fails with an error.

Data Type

String

FirewallPort Property (PDFSign Control)

The Transmission Control Protocol (TCP) port for the firewall Host .

Syntax

pdfsigncontrol.FirewallPort[=integer]

Default Value

0

Remarks

The Transmission Control Protocol (TCP) port for the firewall FirewallHost. See the description of the FirewallHost property for details.

Note: This property is set automatically when FirewallType is set to a valid value. See the description of the FirewallType property for details.

Data Type

Integer

FirewallUser Property (PDFSign Control)

A username if authentication is to be used when connecting through a firewall.

Syntax

pdfsigncontrol.FirewallUser[=string]

Default Value

""

Remarks

A username if authentication is to be used when connecting through a firewall. If FirewallHost is specified, this property and the FirewallPassword property are used to connect and authenticate to the given Firewall. If the authentication fails, the control fails with an error.

Data Type

String

InputData Property (PDFSign Control)

A byte array containing the PDF document to process.

Syntax

pdfsigncontrol.InputData[=byte array]

Remarks

This property is used to assign a byte array containing the PDF document to be processed.

This property is not available at design time.

Data Type

Byte Array

InputFile Property (PDFSign Control)

The PDF file to process.

Syntax

pdfsigncontrol.InputFile[=string]

Default Value

""

Remarks

This property is used to provide a path to the PDF document to be processed.

Data Type

String

KnownCertCount Property (PDFSign Control)

The number of records in the KnownCert arrays.

Syntax

pdfsigncontrol.KnownCertCount[=integer]

Default Value

0

Remarks

This property controls the size of the following arrays:

• KnownCertEffectiveDate
• KnownCertEncoded
• KnownCertExpirationDate
• KnownCertExtendedKeyUsage
• KnownCertFingerprint
• KnownCertFingerprintSHA1
• KnownCertFingerprintSHA256
• KnownCertIssuer
• KnownCertPrivateKey
• KnownCertPrivateKeyAvailable
• KnownCertPrivateKeyContainer
• KnownCertPublicKey
• KnownCertPublicKeyAlgorithm
• KnownCertPublicKeyLength
• KnownCertSerialNumber
• KnownCertSignatureAlgorithm
• KnownCertStore
• KnownCertStorePassword
• KnownCertStoreType
• KnownCertSubject
• KnownCertSubjectAltNames
• KnownCertThumbprintMD5
• KnownCertThumbprintSHA1
• KnownCertThumbprintSHA256
• KnownCertUsage
• KnownCertUsageFlags
• KnownCertVersion

The array indices start at 0 and end at KnownCertCount - 1.

This property is not available at design time.

Data Type

Integer

KnownCertEffectiveDate Property (PDFSign Control)

The date on which this certificate becomes valid.

Syntax

pdfsigncontrol.KnownCertEffectiveDate(KnownCertIndex)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertExpirationDate Property (PDFSign Control)

The date on which the certificate expires.

Syntax

pdfsigncontrol.KnownCertExpirationDate(KnownCertIndex)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertExtendedKeyUsage Property (PDFSign Control)

A comma-delimited list of extended key usage identifiers.

Syntax

pdfsigncontrol.KnownCertExtendedKeyUsage(KnownCertIndex)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertFingerprint Property (PDFSign Control)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

pdfsigncontrol.KnownCertFingerprint(KnownCertIndex)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertFingerprintSHA1 Property (PDFSign Control)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

pdfsigncontrol.KnownCertFingerprintSHA1(KnownCertIndex)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertFingerprintSHA256 Property (PDFSign Control)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

pdfsigncontrol.KnownCertFingerprintSHA256(KnownCertIndex)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertIssuer Property (PDFSign Control)

The issuer of the certificate.

Syntax

pdfsigncontrol.KnownCertIssuer(KnownCertIndex)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertPrivateKey Property (PDFSign Control)

The private key of the certificate (if available).

Syntax

pdfsigncontrol.KnownCertPrivateKey(KnownCertIndex)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The KnownCertPrivateKey may be available but not exportable. In this case, KnownCertPrivateKey returns an empty string.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertPrivateKeyAvailable Property (PDFSign Control)

Whether a PrivateKey is available for the selected certificate.

Syntax

pdfsigncontrol.KnownCertPrivateKeyAvailable(KnownCertIndex)

Default Value

False

Remarks

Whether a KnownCertPrivateKey is available for the selected certificate. If KnownCertPrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

Boolean

KnownCertPrivateKeyContainer Property (PDFSign Control)

The name of the PrivateKey container for the certificate (if available).

Syntax

pdfsigncontrol.KnownCertPrivateKeyContainer(KnownCertIndex)

Default Value

""

Remarks

The name of the KnownCertPrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertPublicKey Property (PDFSign Control)

The public key of the certificate.

Syntax

pdfsigncontrol.KnownCertPublicKey(KnownCertIndex)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertPublicKeyAlgorithm Property (PDFSign Control)

The textual description of the certificate's public key algorithm.

Syntax

pdfsigncontrol.KnownCertPublicKeyAlgorithm(KnownCertIndex)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertPublicKeyLength Property (PDFSign Control)

The length of the certificate's public key (in bits).

Syntax

pdfsigncontrol.KnownCertPublicKeyLength(KnownCertIndex)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

KnownCertSerialNumber Property (PDFSign Control)

The serial number of the certificate encoded as a string.

Syntax

pdfsigncontrol.KnownCertSerialNumber(KnownCertIndex)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertSignatureAlgorithm Property (PDFSign Control)

The text description of the certificate's signature algorithm.

Syntax

pdfsigncontrol.KnownCertSignatureAlgorithm(KnownCertIndex)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertStore Property (PDFSign Control)

The name of the certificate store for the client certificate.

Syntax

pdfsigncontrol.KnownCertStore(KnownCertIndex)[=string]

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The KnownCertStoreType property denotes the type of the certificate store specified by KnownCertStore. If the store is password-protected, specify the password in KnownCertStorePassword.

KnownCertStore is used in conjunction with the KnownCertSubject property to specify client certificates. If KnownCertStore has a value, and KnownCertSubject or KnownCertEncoded is set, a search for a certificate is initiated. Please see the KnownCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .KnownCertStoreB.

This property is not available at design time.

Data Type

Binary String

KnownCertStorePassword Property (PDFSign Control)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

pdfsigncontrol.KnownCertStorePassword(KnownCertIndex)[=string]

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is not available at design time.

Data Type

String

KnownCertStoreType Property (PDFSign Control)

The type of certificate store for this certificate.

Syntax

pdfsigncontrol.KnownCertStoreType(KnownCertIndex)[=integer]

Possible Values

cstUser(0), 
cstMachine(1), 
cstPFXFile(2), 
cstPFXBlob(3), 
cstJKSFile(4), 
cstJKSBlob(5), 
cstPEMKeyFile(6), 
cstPEMKeyBlob(7), 
cstPublicKeyFile(8), 
cstPublicKeyBlob(9), 
cstSSHPublicKeyBlob(10), 
cstP7BFile(11), 
cstP7BBlob(12), 
cstSSHPublicKeyFile(13), 
cstPPKFile(14), 
cstPPKBlob(15), 
cstXMLFile(16), 
cstXMLBlob(17), 
cstJWKFile(18), 
cstJWKBlob(19), 
cstSecurityKey(20), 
cstBCFKSFile(21), 
cstBCFKSBlob(22), 
cstPKCS11(23), 
cstAuto(99)

Default Value

0

Remarks

The type of certificate store for this certificate.

The control supports both public and private keys in a variety of formats. When the cstAuto value is used, the control will automatically determine the type. This property can take one of the following values:

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is not available at design time.

Data Type

Integer

KnownCertSubjectAltNames Property (PDFSign Control)

Comma-separated lists of alternative subject names for the certificate.

Syntax

pdfsigncontrol.KnownCertSubjectAltNames(KnownCertIndex)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertThumbprintMD5 Property (PDFSign Control)

The MD5 hash of the certificate.

Syntax

pdfsigncontrol.KnownCertThumbprintMD5(KnownCertIndex)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertThumbprintSHA1 Property (PDFSign Control)

The SHA-1 hash of the certificate.

Syntax

pdfsigncontrol.KnownCertThumbprintSHA1(KnownCertIndex)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertThumbprintSHA256 Property (PDFSign Control)

The SHA-256 hash of the certificate.

Syntax

pdfsigncontrol.KnownCertThumbprintSHA256(KnownCertIndex)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertUsage Property (PDFSign Control)

The text description of UsageFlags .

Syntax

pdfsigncontrol.KnownCertUsage(KnownCertIndex)

Default Value

""

Remarks

The text description of KnownCertUsageFlags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertUsageFlags Property (PDFSign Control)

The flags that show intended use for the certificate.

Syntax

pdfsigncontrol.KnownCertUsageFlags(KnownCertIndex)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of KnownCertUsageFlags is a combination of the following flags:

Please see the KnownCertUsage property for a text representation of KnownCertUsageFlags.

This functionality currently is not available when the provider is OpenSSL.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

KnownCertVersion Property (PDFSign Control)

The certificate's version number.

Syntax

pdfsigncontrol.KnownCertVersion(KnownCertIndex)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

String

KnownCertSubject Property (PDFSign Control)

The subject of the certificate used for client authentication.

Syntax

pdfsigncontrol.KnownCertSubject(KnownCertIndex)[=string]

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is not available at design time.

Data Type

String

KnownCertEncoded Property (PDFSign Control)

The certificate (PEM/Base64 encoded).

Syntax

pdfsigncontrol.KnownCertEncoded(KnownCertIndex)[=string]

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The KnownCertStore and KnownCertSubject properties also may be used to specify a certificate.

When KnownCertEncoded is set, a search is initiated in the current KnownCertStore for the private key of the certificate. If the key is found, KnownCertSubject is updated to reflect the full subject of the selected certificate; otherwise, KnownCertSubject is set to an empty string.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .KnownCertEncodedB.

This property is not available at design time.

Data Type

Binary String

OfflineMode Property (PDFSign Control)

Whether the control is operating in offline mode.

Syntax

pdfsigncontrol.OfflineMode[=boolean]

Default Value

False

Remarks

This property indicates whether the control should operate in offline mode.

In offline mode, the control restricts itself from accessing online Trusted Lists and revocation information sources such as CRLs or OCSP responders. It may be useful to set this property to if there is a need to verify the completeness of the validation information included within the signature or provided via KnownCerts.

Data Type

Boolean

OutputData Property (PDFSign Control)

A byte array containing the PDF document after processing.

Syntax

pdfsigncontrol.OutputData

Remarks

This property is used to read the byte array containing the produced output after the operation has completed. It will only be set if an output file and output stream have not been assigned via OutputFile and SetOutputStream respectively.

This property is read-only and not available at design time.

Data Type

Byte Array

OutputFile Property (PDFSign Control)

The path to a local file where the output will be written.

Syntax

pdfsigncontrol.OutputFile[=string]

Default Value

""

Remarks

This property is used to provide a path where the resulting PDF document will be saved after the operation has completed.

Data Type

String

Overwrite Property (PDFSign Control)

Whether or not the control should overwrite files.

Syntax

pdfsigncontrol.Overwrite[=boolean]

Default Value

False

Remarks

This property indicates whether or not the control will overwrite OutputFile, OutputData, or the stream set in SetOutputStream. If set to , an error will be thrown whenever OutputFile, OutputData, or the stream set in SetOutputStream exists before an operation.

Data Type

Boolean

Password Property (PDFSign Control)

The password to decrypt the document with.

Syntax

pdfsigncontrol.Password[=string]

Default Value

""

Remarks

This property is used to provide the user password for decryption. Though it may be different from OwnerPassword, most implementations use the same value for both.

Data Type

String

ProxyAuthScheme Property (PDFSign Control)

The type of authorization to perform when connecting to the proxy.

Syntax

pdfsigncontrol.ProxyAuthScheme[=integer]

Possible Values

authBasic(0), 
authDigest(1), 
authProprietary(2), 
authNone(3), 
authNtlm(4), 
authNegotiate(5)

Default Value

0

Remarks

The type of authorization to perform when connecting to the proxy. This is used only when the ProxyUser and ProxyPassword properties are set.

ProxyAuthScheme should be set to authNone (3) when no authentication is expected.

By default, ProxyAuthScheme is authBasic (0), and if the ProxyUser and ProxyPassword properties are set, the control will attempt basic authentication.

If ProxyAuthScheme is set to authDigest (1), digest authentication will be attempted instead.

If ProxyAuthScheme is set to authProprietary (2), then the authorization token will not be generated by the control. Look at the configuration file for the control being used to find more information about manually setting this token.

If ProxyAuthScheme is set to authNtlm (4), NTLM authentication will be used.

For security reasons, setting this property will clear the values of ProxyUser and ProxyPassword.

Data Type

Integer

ProxyAutoDetect Property (PDFSign Control)

Whether to automatically detect and use proxy system settings, if available.

Syntax

pdfsigncontrol.ProxyAutoDetect[=boolean]

Default Value

False

Remarks

Whether to automatically detect and use proxy system settings, if available. The default value is .

Data Type

Boolean

ProxyPassword Property (PDFSign Control)

A password if authentication is to be used for the proxy.

Syntax

pdfsigncontrol.ProxyPassword[=string]

Default Value

""

Remarks

A password if authentication is to be used for the proxy.

If ProxyAuthScheme is set to Basic Authentication, the ProxyUser and ProxyPassword properties are Base64 encoded and the proxy authentication token will be generated in the form Basic [encoded-user-password].

If ProxyAuthScheme is set to Digest Authentication, the ProxyUser and ProxyPassword properties are used to respond to the Digest Authentication challenge from the server.

If ProxyAuthScheme is set to NTLM Authentication, the ProxyUser and ProxyPassword properties are used to authenticate through NTLM negotiation.

Data Type

String

ProxyPort Property (PDFSign Control)

The Transmission Control Protocol (TCP) port for the proxy Server (default 80).

Syntax

pdfsigncontrol.ProxyPort[=integer]

Default Value

80

Remarks

The Transmission Control Protocol (TCP) port for the proxy ProxyServer (default 80). See the description of the ProxyServer property for details.

Data Type

Integer

ProxyServer Property (PDFSign Control)

If a proxy Server is given, then the HTTP request is sent to the proxy instead of the server otherwise specified.

Syntax

pdfsigncontrol.ProxyServer[=string]

Default Value

""

Remarks

If a proxy ProxyServer is given, then the HTTP request is sent to the proxy instead of the server otherwise specified.

If the ProxyServer property is set to a domain name, a DNS request is initiated. Upon successful termination of the request, the ProxyServer property is set to the corresponding address. If the search is not successful, an error is returned.

Data Type

String

ProxySSL Property (PDFSign Control)

When to use a Secure Sockets Layer (SSL) for the connection to the proxy.

Syntax

pdfsigncontrol.ProxySSL[=integer]

Possible Values

psAutomatic(0), 
psAlways(1), 
psNever(2), 
psTunnel(3)

Default Value

0

Remarks

When to use a Secure Sockets Layer (SSL) for the connection to the proxy. The applicable values are as follows:

Data Type

Integer

ProxyUser Property (PDFSign Control)

A username if authentication is to be used for the proxy.

Syntax

pdfsigncontrol.ProxyUser[=string]

Default Value

""

Remarks

A username if authentication is to be used for the proxy.

If ProxyAuthScheme is set to Basic Authentication, the ProxyUser and ProxyPassword properties are Base64 encoded and the proxy authentication token will be generated in the form Basic [encoded-user-password].

If ProxyAuthScheme is set to Digest Authentication, the ProxyUser and ProxyPassword properties are used to respond to the Digest Authentication challenge from the server.

If ProxyAuthScheme is set to NTLM Authentication, the ProxyUser and ProxyPassword properties are used to authenticate through NTLM negotiation.

Data Type

String

RevocationCheck Property (PDFSign Control)

The kind(s) of revocation check to perform for all chain certificates.

Syntax

pdfsigncontrol.RevocationCheck[=integer]

Possible Values

rcAllCRL(0), 
rcAllOCSP(1), 
rcAllCRLAndOCSP(2), 
rcAnyCRL(3), 
rcAnyOCSP(4), 
rcAnyCRLOrOCSP(5), 
rcAnyOCSPOrCRL(6)

Default Value

6

Remarks

This property is used to specify the revocation sources and preferences the control will use during chain validation. Revocation checking is necessary to ensure the integrity of the chain and to obtain up-to-date certificate validity and trust information.

Certificate Revocation Lists (CRLs) and Online Certificate Status Protocol (OCSP) responses serve the same purpose of ensuring that the certificate has not been revoked by the Certificate Authority (CA) at the time of use. Depending on the circumstances and security policy requirements, either one or both of the revocation information source types may be used.

Possible values are:

This property controls the way revocation checks are performed for every certificate in the chain. Typically, certificates come with two types of revocation information sources: CRLs (Certificate Revocation Lists) and OCSP responses. CRLs are static objects periodically published by the CA at some online location. OCSP responders are active online services maintained by the CA that can provide up-to-date information on certificate statuses in near real time.

There are some conceptual differences between the two. CRLs are normally larger in size. Their use involves some latency because there is normally a delay between the time at which a certificate was revoked and the time at which the subsequent CRL mentioning that revocation is published. The benefits of CRLs are that the same object can provide statuses for all certificates issued by a particular CA, and that the whole technology is much simpler than OCSP (and thus is supported by more CAs).

This property allows the validation course to be adjusted by including or excluding certain types of revocation sources from the validation process. The rcAnyOCSPOrCRL setting (give preference to the faster OCSP route and only demand one source to succeed) is a good choice for most typical validation environments. The rcAll* modes are much stricter, and may be used in scenarios where bulletproof validity information is essential.

Note: If no CRL or OCSP endpoints are provided by the CA, the revocation check will be considered successful. This is because the CA chose not to supply revocation information for its certificates, meaning they are considered irrevocable.

Note: Within each of the above settings, if any retrieved CRL or OCSP response indicates that the certificate has been revoked, the revocation check fails.

Data Type

Integer

SignatureAuthorName Property (PDFSign Control)

The human-readable name of the signer.

Syntax

pdfsigncontrol.SignatureAuthorName[=string]

Default Value

""

Remarks

This property is used to specify the human-readable name of the signer.

Note: This property only applies when creating a new signature.

Data Type

String

SignatureClaimedSigningTime Property (PDFSign Control)

The signature's creation time.

Syntax

pdfsigncontrol.SignatureClaimedSigningTime[=string]

Default Value

""

Remarks

This property is used to specify the signature creation time from the signer's computer. The time should be provided in UTC in yyyyMMddHHmmssZ format.

Note: This property only applies when creating a new signature.

Data Type

String

SignatureField Property (PDFSign Control)

The index of the empty signature field to sign.

Syntax

pdfsigncontrol.SignatureField[=integer]

Default Value

-1

Remarks

This property is used to specify the empty signature field that should be signed. If the default value of -1 is assigned to this property, a new signature field will be created.

Example: pdfsign.InputFile = "input.pdf"; pdfsign.OutputFile = "emptyfield.pdf"; pdfsign.SignatureType = PDFSignSignatureTypes.stEmptyField; pdfsign.Sign(); // Later pdfsign.Reset(); pdfsign.InputFile = "emptyfield.pdf"; pdfsign.OutputFile = "signed.pdf"; pdfsign.SigningCert = new Certificate(CertStoreTypes.cstPFXFile, "cert.pfx", "password", "*"); pdfsign.SignatureField = 0; // Configure signature properties as desired pdfsign.Sign();

Data Type

Integer

SignatureHashAlgorithm Property (PDFSign Control)

The hash algorithm to be used for signing.

Syntax

pdfsigncontrol.SignatureHashAlgorithm[=string]

Default Value

"SHA256"

Remarks

This property is used to specify the hash algorithm to be used for signing.

Possible values are:

• SHA1
• SHA224
• SHA256
• SHA384
• SHA512
• MD5

Note: This property only applies when creating a new signature.

Data Type

String

SignatureProfile Property (PDFSign Control)

The PAdES profile to apply when creating the signature.

Syntax

pdfsigncontrol.SignatureProfile[=integer]

Possible Values

pfNone(0), 
pfBaselineB(1), 
pfBaselineT(2), 
pfBaselineLT(3), 
pfBaselineLTA(4)

Default Value

0

Remarks

This property is used to specify a pre-defined PAdES profile to apply when creating the signature, as defined by ETSI.

Advanced signatures come in many variants, and they are often defined by parties that need to process them or by local standards. Profiles are sets of pre-defined configurations that correspond to particular signature variants. Specifying a profile pre-configures the control to make it produce the signature that matches the configuration corresponding to that profile.

Possible values are:

To apply a custom profile that is not defined by ETSI, set the CustomProfile configuration setting.

Note: This property only applies when creating a new signature.

Data Type

Integer

SignatureReason Property (PDFSign Control)

The reason for signing.

Syntax

pdfsigncontrol.SignatureReason[=string]

Default Value

""

Remarks

This property is used to specify the reason for signing.

Note: This property only applies when creating a new signature.

Data Type

String

PDFSignatureCount Property (PDFSign Control)

The number of records in the PDFSignature arrays.

Syntax

pdfsigncontrol.PDFSignatureCount

Default Value

0

Remarks

This property controls the size of the following arrays:

• PDFSignatureAuthorName
• PDFSignatureChainValidationDetails
• PDFSignatureChainValidationResult
• PDFSignatureClaimedSigningTime
• PDFSignatureCoverageEndsAt
• PDFSignatureHashAlgorithm
• PDFSignatureProfile
• PDFSignatureReason
• PDFSignatureSignerCertIndex
• PDFSignatureTimestampCertIndex
• PDFSignatureTimestamped
• PDFSignatureType
• PDFSignatureValidatedSigningTime
• PDFSignatureValidationResult
• PDFSignatureWidgetHeight
• PDFSignatureWidgetOffsetX
• PDFSignatureWidgetOffsetY
• PDFSignatureWidgetPages
• PDFSignatureWidgetWidth

The array indices start at 0 and end at PDFSignatureCount - 1.

This property is read-only and not available at design time.

Data Type

Integer

PDFSignatureAuthorName Property (PDFSign Control)

The human-readable name of the signer.

Syntax

pdfsigncontrol.PDFSignatureAuthorName(PDFSignatureIndex)

Default Value

""

Remarks

The human-readable name of the signer.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

PDFSignatureChainValidationDetails Property (PDFSign Control)

The details of the certificate chain validation outcome.

Syntax

pdfsigncontrol.PDFSignatureChainValidationDetails(PDFSignatureIndex)

Default Value

0

Remarks

The details of the certificate chain validation outcome. They may often suggest the reasons that contributed to the overall validation result in PDFSignatureChainValidationResult.

The value of this property is a bitmask of the following flags:

Subscribe to the Log event to access the detailed validation log. This property is also available as a parameter of the SignatureProcessed event.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

Integer

PDFSignatureChainValidationResult Property (PDFSign Control)

The outcome of the certificate chain validation routine.

Syntax

pdfsigncontrol.PDFSignatureChainValidationResult(PDFSignatureIndex)

Possible Values

cvrUnknown(0), 
cvrValid(1), 
cvrValidButUntrusted(2), 
cvrInvalid(3), 
cvrCantBeEstablished(4)

Default Value

0

Remarks

The outcome of the certificate chain validation routine.

Possible values are:

Subscribe to the Log event to access the detailed validation log. This property is also available as a parameter of the SignatureProcessed event.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

Integer

PDFSignatureClaimedSigningTime Property (PDFSign Control)

The signature's creation time in UTC.

Syntax

pdfsigncontrol.PDFSignatureClaimedSigningTime(PDFSignatureIndex)

Default Value

""

Remarks

The signature's creation time in UTC.

Use this property to get the signature creation time from the signer's computer. Note that the claimed time, unlike PDFSignatureValidatedSigningTime, does not originate from a trusted TSA and may be forfeited or wrong.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

PDFSignatureCoverageEndsAt Property (PDFSign Control)

The offset in the PDF file where the signature coverage ends.

Syntax

pdfsigncontrol.PDFSignatureCoverageEndsAt(PDFSignatureIndex)

Default Value

0

Remarks

The offset in the PDF file where the signature coverage ends.

PDF generators often use incremental updates to make changes in documents. This may result in the signature only covering a part of the document (one of the past revisions), but not the subsequent changes.

Use this property to identify the offset where the signature coverage ends. One option is to compare it to the length of the whole document to ensure that the signature covers the entire document. Alternatively, use the GetSignedVersion method to extract the exact revision that was signed.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

Integer

PDFSignatureHashAlgorithm Property (PDFSign Control)

The hash algorithm that was used for signing.

Syntax

pdfsigncontrol.PDFSignatureHashAlgorithm(PDFSignatureIndex)

Default Value

"SHA256"

Remarks

The hash algorithm that was used for signing.

Possible values are:

• SHA1
• SHA224
• SHA256
• SHA384
• SHA512
• MD5

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

PDFSignatureProfile Property (PDFSign Control)

The pre-defined PAdES profile that was applied when creating the signature, as defined by ETSI.

Syntax

pdfsigncontrol.PDFSignatureProfile(PDFSignatureIndex)

Possible Values

pfNone(0), 
pfBaselineB(1), 
pfBaselineT(2), 
pfBaselineLT(3), 
pfBaselineLTA(4)

Default Value

0

Remarks

The pre-defined PAdES profile that was applied when creating the signature, as defined by ETSI.

Advanced signatures come in many variants, and they are often defined by parties that need to process them or by local standards. Profiles are sets of pre-defined configurations that correspond to particular signature variants.

Possible values are:

Note that when verifying a signature, the LTV modifier may be affected by the validation settings. These include OfflineMode (set it to to obtain the clean LTV capability) and CacheRevocationInfo (set it to to prevent earlier validations from affecting the current validation).

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

Integer

PDFSignatureReason Property (PDFSign Control)

The reason for signing.

Syntax

pdfsigncontrol.PDFSignatureReason(PDFSignatureIndex)

Default Value

""

Remarks

The reason for signing.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

PDFSignatureType Property (PDFSign Control)

The type of the signature that was created.

Syntax

pdfsigncontrol.PDFSignatureType(PDFSignatureIndex)

Possible Values

stLegacy(0), 
stAdvanced(1), 
stDTS(2), 
stEmptyField(3)

Default Value

0

Remarks

The type of the signature that was created.

Possible values are:

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

Integer

PDFSignatureSignerCertIndex Property (PDFSign Control)

The index of the signer certificate in the DocumentCerts properties.

Syntax

pdfsigncontrol.PDFSignatureSignerCertIndex(PDFSignatureIndex)

Default Value

-1

Remarks

The index of the signer certificate in the DocumentCerts properties.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

Integer

PDFSignatureTimestampCertIndex Property (PDFSign Control)

The index of the timestamping certificate in the DocumentCerts properties (if applicable).

Syntax

pdfsigncontrol.PDFSignatureTimestampCertIndex(PDFSignatureIndex)

Default Value

-1

Remarks

The index of the timestamping certificate in the DocumentCerts properties (if applicable).

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

Integer

PDFSignatureTimestamped Property (PDFSign Control)

Whether the signature contains an embedded timestamp.

Syntax

pdfsigncontrol.PDFSignatureTimestamped(PDFSignatureIndex)

Default Value

False

Remarks

Whether the signature contains an embedded timestamp.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

Boolean

PDFSignatureValidatedSigningTime Property (PDFSign Control)

The certified signing time in UTC.

Syntax

pdfsigncontrol.PDFSignatureValidatedSigningTime(PDFSignatureIndex)

Default Value

""

Remarks

The certified signing time in UTC.

Use this property to obtain the signing time as certified by a timestamp from a trusted timestamping authority. This property is only nonempty if there is a valid timestamp included in the signature.

Note that the validated time, unlike PDFSignatureClaimedSigningTime, is the trusted signing time.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

PDFSignatureValidationResult Property (PDFSign Control)

The outcome of the cryptographic signature validation.

Syntax

pdfsigncontrol.PDFSignatureValidationResult(PDFSignatureIndex)

Possible Values

svrUnknown(0), 
svrValid(1), 
svrCorrupted(2), 
svrSignerNotFound(3), 
svrFailure(4)

Default Value

0

Remarks

The outcome of the cryptographic signature validation.

Possible values are:

This property is also available as the SignatureValidationResult parameter of the SignatureProcessed event.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

Integer

PDFSignatureWidgetHeight Property (PDFSign Control)

The height of the signature widget in points.

Syntax

pdfsigncontrol.PDFSignatureWidgetHeight(PDFSignatureIndex)

Default Value

"70"

Remarks

The height of the signature widget in points. Both integer and decimal values are supported.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

PDFSignatureWidgetOffsetX Property (PDFSign Control)

The signature widget offset from the left-hand page border in points.

Syntax

pdfsigncontrol.PDFSignatureWidgetOffsetX(PDFSignatureIndex)

Default Value

"0"

Remarks

The signature widget offset from the left-hand page border in points. Both integer and decimal values are supported.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

PDFSignatureWidgetOffsetY Property (PDFSign Control)

The signature widget offset from the bottom page border in points.

Syntax

pdfsigncontrol.PDFSignatureWidgetOffsetY(PDFSignatureIndex)

Default Value

"0"

Remarks

The signature widget offset from the bottom page border in points. Both integer and decimal values are supported.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

PDFSignatureWidgetPages Property (PDFSign Control)

The pages that the signature and its widget are placed on.

Syntax

pdfsigncontrol.PDFSignatureWidgetPages(PDFSignatureIndex)

Default Value

""

Remarks

The pages that the signature and its widget are placed on.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

PDFSignatureWidgetWidth Property (PDFSign Control)

The width of the signature widget in points.

Syntax

pdfsigncontrol.PDFSignatureWidgetWidth(PDFSignatureIndex)

Default Value

"70"

Remarks

The width of the signature widget in points. Both integer and decimal values are supported.

The PDFSignatureIndex parameter specifies the index of the item in the array. The size of the array is controlled by the PDFSignatureCount property.

This property is read-only and not available at design time.

Data Type

String

SignatureType Property (PDFSign Control)

The type of signature to create.

Syntax

pdfsigncontrol.SignatureType[=integer]

Possible Values

stLegacy(0), 
stAdvanced(1), 
stDTS(2), 
stEmptyField(3)

Default Value

0

Remarks

This property is used to specify the type of the signature.

Possible values are:

Note: This property only applies when creating a new signature.

Data Type

Integer

SignatureWidgetHeight Property (PDFSign Control)

The height of the signature widget.

Syntax

pdfsigncontrol.SignatureWidgetHeight[=string]

Default Value

"70"

Remarks

This property is used to specify the height of the signature widget in points. Both integer and decimal values are supported.

Note: This property only applies when creating a new signature.

Data Type

String

SignatureWidgetOffsetX Property (PDFSign Control)

The signature widget offset from the left-hand page border.

Syntax

pdfsigncontrol.SignatureWidgetOffsetX[=string]

Default Value

"0"

Remarks

This property is used to specify the signature widget offset from the left-hand page border in points. Both integer and decimal values are supported.

Note: This property only applies when creating a new signature.

Data Type

String

SignatureWidgetOffsetY Property (PDFSign Control)

The signature widget offset from the bottom page border.

Syntax

pdfsigncontrol.SignatureWidgetOffsetY[=string]

Default Value

"0"

Remarks

This property is used to specify the signature widget offset from the bottom page border in points. Both integer and decimal values are supported.

Note: This property only applies when creating a new signature.

Data Type

String

SignatureWidgetPages Property (PDFSign Control)

The pages to place the signature and its widget on.

Syntax

pdfsigncontrol.SignatureWidgetPages[=string]

Default Value

""

Remarks

This property is used to specify the pages on which the signature and its widget will be placed.

A variety of syntaxes are supported:

• A single page number: 3
• A comma-separated list of page numbers: 1,2,5,7
• The asterisk character (*) indicates that the widget should be placed on all pages in the document.
• The first and last placeholders specify that the signature should be placed on the respective page, independently of its number.

Note: This property only applies when creating a new signature.

Data Type

String

SignatureWidgetWidth Property (PDFSign Control)

The width of the signature widget.

Syntax

pdfsigncontrol.SignatureWidgetWidth[=string]

Default Value

"70"

Remarks

This property is used to specify the width of the signature widget in points. Both integer and decimal values are supported.

Note: This property only applies when creating a new signature.

Data Type

String

SigningCertEffectiveDate Property (PDFSign Control)

The date on which this certificate becomes valid.

Syntax

pdfsigncontrol.SigningCertEffectiveDate

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only and not available at design time.

Data Type

String

SigningCertExpirationDate Property (PDFSign Control)

The date on which the certificate expires.

Syntax

pdfsigncontrol.SigningCertExpirationDate

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only and not available at design time.

Data Type

String

SigningCertExtendedKeyUsage Property (PDFSign Control)

A comma-delimited list of extended key usage identifiers.

Syntax

pdfsigncontrol.SigningCertExtendedKeyUsage

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only and not available at design time.

Data Type

String

SigningCertFingerprint Property (PDFSign Control)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

pdfsigncontrol.SigningCertFingerprint

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only and not available at design time.

Data Type

String

SigningCertFingerprintSHA1 Property (PDFSign Control)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

pdfsigncontrol.SigningCertFingerprintSHA1

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only and not available at design time.

Data Type

String

SigningCertFingerprintSHA256 Property (PDFSign Control)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

pdfsigncontrol.SigningCertFingerprintSHA256

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only and not available at design time.

Data Type

String

SigningCertIssuer Property (PDFSign Control)

The issuer of the certificate.

Syntax

pdfsigncontrol.SigningCertIssuer

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only and not available at design time.

Data Type

String

SigningCertPrivateKey Property (PDFSign Control)

The private key of the certificate (if available).

Syntax

pdfsigncontrol.SigningCertPrivateKey

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The SigningCertPrivateKey may be available but not exportable. In this case, SigningCertPrivateKey returns an empty string.

This property is read-only and not available at design time.

Data Type

String

SigningCertPrivateKeyAvailable Property (PDFSign Control)

Whether a PrivateKey is available for the selected certificate.

Syntax

pdfsigncontrol.SigningCertPrivateKeyAvailable

Default Value

False

Remarks

Whether a SigningCertPrivateKey is available for the selected certificate. If SigningCertPrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only and not available at design time.

Data Type

Boolean

SigningCertPrivateKeyContainer Property (PDFSign Control)

The name of the PrivateKey container for the certificate (if available).

Syntax

pdfsigncontrol.SigningCertPrivateKeyContainer

Default Value

""

Remarks

The name of the SigningCertPrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only and not available at design time.

Data Type

String

SigningCertPublicKey Property (PDFSign Control)

The public key of the certificate.

Syntax

pdfsigncontrol.SigningCertPublicKey

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only and not available at design time.

Data Type

String

SigningCertPublicKeyAlgorithm Property (PDFSign Control)

The textual description of the certificate's public key algorithm.

Syntax

pdfsigncontrol.SigningCertPublicKeyAlgorithm

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only and not available at design time.

Data Type

String

SigningCertPublicKeyLength Property (PDFSign Control)

The length of the certificate's public key (in bits).

Syntax

pdfsigncontrol.SigningCertPublicKeyLength

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only and not available at design time.

Data Type

Integer

SigningCertSerialNumber Property (PDFSign Control)

The serial number of the certificate encoded as a string.

Syntax

pdfsigncontrol.SigningCertSerialNumber

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only and not available at design time.

Data Type

String

SigningCertSignatureAlgorithm Property (PDFSign Control)

The text description of the certificate's signature algorithm.

Syntax

pdfsigncontrol.SigningCertSignatureAlgorithm

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only and not available at design time.

Data Type

String

SigningCertStore Property (PDFSign Control)

The name of the certificate store for the client certificate.

Syntax

pdfsigncontrol.SigningCertStore[=string]

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The SigningCertStoreType property denotes the type of the certificate store specified by SigningCertStore. If the store is password-protected, specify the password in SigningCertStorePassword.

SigningCertStore is used in conjunction with the SigningCertSubject property to specify client certificates. If SigningCertStore has a value, and SigningCertSubject or SigningCertEncoded is set, a search for a certificate is initiated. Please see the SigningCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

To read or write binary data to the property, a Variant (Byte Array) version is provided in .SigningCertStoreB.

This property is not available at design time.

Data Type

Binary String

SigningCertStorePassword Property (PDFSign Control)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

pdfsigncontrol.SigningCertStorePassword[=string]

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

This property is not available at design time.

Data Type

String

SigningCertStoreType Property (PDFSign Control)

The type of certificate store for this certificate.

Syntax

pdfsigncontrol.SigningCertStoreType[=integer]

Possible Values

cstUser(0), 
cstMachine(1), 
cstPFXFile(2), 
cstPFXBlob(3), 
cstJKSFile(4), 
cstJKSBlob(5), 
cstPEMKeyFile(6), 
cstPEMKeyBlob(7), 
cstPublicKeyFile(8), 
cstPublicKeyBlob(9), 
cstSSHPublicKeyBlob(10), 
cstP7BFile(11), 
cstP7BBlob(12), 
cstSSHPublicKeyFile(13), 
cstPPKFile(14), 
cstPPKBlob(15), 
cstXMLFile(16), 
cstXMLBlob(17), 
cstJWKFile(18), 
cstJWKBlob(19), 
cstSecurityKey(20), 
cstBCFKSFile(21), 
cstBCFKSBlob(22), 
cstPKCS11(23), 
cstAuto(99)

Default Value

0

Remarks

The type of certificate store for this certificate.

The control supports both public and private keys in a variety of formats. When the cstAuto value is used, the control will automatically determine the type. This property can take one of the following values:

This property is not available at design time.

Data Type

Integer

SigningCertSubjectAltNames Property (PDFSign Control)

Comma-separated lists of alternative subject names for the certificate.

Syntax

pdfsigncontrol.SigningCertSubjectAltNames

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only and not available at design time.

Data Type

String

SigningCertThumbprintMD5 Property (PDFSign Control)

The MD5 hash of the certificate.

Syntax

pdfsigncontrol.SigningCertThumbprintMD5

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only and not available at design time.

Data Type

String

SigningCertThumbprintSHA1 Property (PDFSign Control)

The SHA-1 hash of the certificate.

Syntax

pdfsigncontrol.SigningCertThumbprintSHA1

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only and not available at design time.

Data Type

String

SigningCertThumbprintSHA256 Property (PDFSign Control)

The SHA-256 hash of the certificate.

Syntax

pdfsigncontrol.SigningCertThumbprintSHA256

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only and not available at design time.

Data Type

String

SigningCertUsage Property (PDFSign Control)

The text description of UsageFlags .

Syntax

pdfsigncontrol.SigningCertUsage

Default Value

""

Remarks

The text description of SigningCertUsageFlags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only and not available at design time.

Data Type

String

SigningCertUsageFlags Property (PDFSign Control)

The flags that show intended use for the certificate.

Syntax

pdfsigncontrol.SigningCertUsageFlags

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of SigningCertUsageFlags is a combination of the following flags:

Please see the SigningCertUsage property for a text representation of SigningCertUsageFlags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only and not available at design time.

Data Type

Integer

SigningCertVersion Property (PDFSign Control)

The certificate's version number.

Syntax

pdfsigncontrol.SigningCertVersion

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only and not available at design time.

Data Type

String

SigningCertSubject Property (PDFSign Control)

The subject of the certificate used for client authentication.

Syntax

pdfsigncontrol.SigningCertSubject[=string]

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

This property is not available at design time.

Data Type

String

SigningCertEncoded Property (PDFSign Control)

The certificate (PEM/Base64 encoded).

Syntax

pdfsigncontrol.SigningCertEncoded[=string]

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SigningCertStore and SigningCertSubject properties also may be used to specify a certificate.

When SigningCertEncoded is set, a search is initiated in the current SigningCertStore for the private key of the certificate. If the key is found, SigningCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SigningCertSubject is set to an empty string.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .SigningCertEncodedB.

This property is not available at design time.

Data Type

Binary String

TimestampServer Property (PDFSign Control)

The address of the timestamping server.

Syntax

pdfsigncontrol.TimestampServer[=string]

Default Value

""

Remarks

This property is used to specify the address of the TSA (Timestamping Authority) server to use for timestamping the signature (normal signing) or the document (LTV update).

If the timestamping service enforces credential-based user authentication (basic or digest), the credentials can be provided in the same URL. For example: pdfsign.TimestampServer = "http://user:password@timestamp.server.com/TsaService"; If the TSA requires TLS client authentication, provide the client certificate via the TSATLSClientCertStoreType, TSATLSClientCertStore, TSATLSClientCertSubject, and TSATLSClientCertStorePassword configuration settings.

Data Type

String

TrustedCertCount Property (PDFSign Control)

The number of records in the TrustedCert arrays.

Syntax

pdfsigncontrol.TrustedCertCount[=integer]

Default Value

0

Remarks

This property controls the size of the following arrays:

• TrustedCertEffectiveDate
• TrustedCertEncoded
• TrustedCertExpirationDate
• TrustedCertExtendedKeyUsage
• TrustedCertFingerprint
• TrustedCertFingerprintSHA1
• TrustedCertFingerprintSHA256
• TrustedCertIssuer
• TrustedCertPrivateKey
• TrustedCertPrivateKeyAvailable
• TrustedCertPrivateKeyContainer
• TrustedCertPublicKey
• TrustedCertPublicKeyAlgorithm
• TrustedCertPublicKeyLength
• TrustedCertSerialNumber
• TrustedCertSignatureAlgorithm
• TrustedCertStore
• TrustedCertStorePassword
• TrustedCertStoreType
• TrustedCertSubject
• TrustedCertSubjectAltNames
• TrustedCertThumbprintMD5
• TrustedCertThumbprintSHA1
• TrustedCertThumbprintSHA256
• TrustedCertUsage
• TrustedCertUsageFlags
• TrustedCertVersion

The array indices start at 0 and end at TrustedCertCount - 1.

This property is not available at design time.

Data Type

Integer

TrustedCertEffectiveDate Property (PDFSign Control)

The date on which this certificate becomes valid.

Syntax

pdfsigncontrol.TrustedCertEffectiveDate(TrustedCertIndex)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertExpirationDate Property (PDFSign Control)

The date on which the certificate expires.

Syntax

pdfsigncontrol.TrustedCertExpirationDate(TrustedCertIndex)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertExtendedKeyUsage Property (PDFSign Control)

A comma-delimited list of extended key usage identifiers.

Syntax

pdfsigncontrol.TrustedCertExtendedKeyUsage(TrustedCertIndex)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertFingerprint Property (PDFSign Control)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

pdfsigncontrol.TrustedCertFingerprint(TrustedCertIndex)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertFingerprintSHA1 Property (PDFSign Control)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

pdfsigncontrol.TrustedCertFingerprintSHA1(TrustedCertIndex)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertFingerprintSHA256 Property (PDFSign Control)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

pdfsigncontrol.TrustedCertFingerprintSHA256(TrustedCertIndex)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertIssuer Property (PDFSign Control)

The issuer of the certificate.

Syntax

pdfsigncontrol.TrustedCertIssuer(TrustedCertIndex)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertPrivateKey Property (PDFSign Control)

The private key of the certificate (if available).

Syntax

pdfsigncontrol.TrustedCertPrivateKey(TrustedCertIndex)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The TrustedCertPrivateKey may be available but not exportable. In this case, TrustedCertPrivateKey returns an empty string.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertPrivateKeyAvailable Property (PDFSign Control)

Whether a PrivateKey is available for the selected certificate.

Syntax

pdfsigncontrol.TrustedCertPrivateKeyAvailable(TrustedCertIndex)

Default Value

False

Remarks

Whether a TrustedCertPrivateKey is available for the selected certificate. If TrustedCertPrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

Boolean

TrustedCertPrivateKeyContainer Property (PDFSign Control)

The name of the PrivateKey container for the certificate (if available).

Syntax

pdfsigncontrol.TrustedCertPrivateKeyContainer(TrustedCertIndex)

Default Value

""

Remarks

The name of the TrustedCertPrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertPublicKey Property (PDFSign Control)

The public key of the certificate.

Syntax

pdfsigncontrol.TrustedCertPublicKey(TrustedCertIndex)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertPublicKeyAlgorithm Property (PDFSign Control)

The textual description of the certificate's public key algorithm.

Syntax

pdfsigncontrol.TrustedCertPublicKeyAlgorithm(TrustedCertIndex)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertPublicKeyLength Property (PDFSign Control)

The length of the certificate's public key (in bits).

Syntax

pdfsigncontrol.TrustedCertPublicKeyLength(TrustedCertIndex)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

TrustedCertSerialNumber Property (PDFSign Control)

The serial number of the certificate encoded as a string.

Syntax

pdfsigncontrol.TrustedCertSerialNumber(TrustedCertIndex)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertSignatureAlgorithm Property (PDFSign Control)

The text description of the certificate's signature algorithm.

Syntax

pdfsigncontrol.TrustedCertSignatureAlgorithm(TrustedCertIndex)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertStore Property (PDFSign Control)

The name of the certificate store for the client certificate.

Syntax

pdfsigncontrol.TrustedCertStore(TrustedCertIndex)[=string]

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The TrustedCertStoreType property denotes the type of the certificate store specified by TrustedCertStore. If the store is password-protected, specify the password in TrustedCertStorePassword.

TrustedCertStore is used in conjunction with the TrustedCertSubject property to specify client certificates. If TrustedCertStore has a value, and TrustedCertSubject or TrustedCertEncoded is set, a search for a certificate is initiated. Please see the TrustedCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .TrustedCertStoreB.

This property is not available at design time.

Data Type

Binary String

TrustedCertStorePassword Property (PDFSign Control)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

pdfsigncontrol.TrustedCertStorePassword(TrustedCertIndex)[=string]

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is not available at design time.

Data Type

String

TrustedCertStoreType Property (PDFSign Control)

The type of certificate store for this certificate.

Syntax

pdfsigncontrol.TrustedCertStoreType(TrustedCertIndex)[=integer]

Possible Values

cstUser(0), 
cstMachine(1), 
cstPFXFile(2), 
cstPFXBlob(3), 
cstJKSFile(4), 
cstJKSBlob(5), 
cstPEMKeyFile(6), 
cstPEMKeyBlob(7), 
cstPublicKeyFile(8), 
cstPublicKeyBlob(9), 
cstSSHPublicKeyBlob(10), 
cstP7BFile(11), 
cstP7BBlob(12), 
cstSSHPublicKeyFile(13), 
cstPPKFile(14), 
cstPPKBlob(15), 
cstXMLFile(16), 
cstXMLBlob(17), 
cstJWKFile(18), 
cstJWKBlob(19), 
cstSecurityKey(20), 
cstBCFKSFile(21), 
cstBCFKSBlob(22), 
cstPKCS11(23), 
cstAuto(99)

Default Value

0

Remarks

The type of certificate store for this certificate.

The control supports both public and private keys in a variety of formats. When the cstAuto value is used, the control will automatically determine the type. This property can take one of the following values:

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is not available at design time.

Data Type

Integer

TrustedCertSubjectAltNames Property (PDFSign Control)

Comma-separated lists of alternative subject names for the certificate.

Syntax

pdfsigncontrol.TrustedCertSubjectAltNames(TrustedCertIndex)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertThumbprintMD5 Property (PDFSign Control)

The MD5 hash of the certificate.

Syntax

pdfsigncontrol.TrustedCertThumbprintMD5(TrustedCertIndex)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertThumbprintSHA1 Property (PDFSign Control)

The SHA-1 hash of the certificate.

Syntax

pdfsigncontrol.TrustedCertThumbprintSHA1(TrustedCertIndex)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertThumbprintSHA256 Property (PDFSign Control)

The SHA-256 hash of the certificate.

Syntax

pdfsigncontrol.TrustedCertThumbprintSHA256(TrustedCertIndex)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertUsage Property (PDFSign Control)

The text description of UsageFlags .

Syntax

pdfsigncontrol.TrustedCertUsage(TrustedCertIndex)

Default Value

""

Remarks

The text description of TrustedCertUsageFlags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertUsageFlags Property (PDFSign Control)

The flags that show intended use for the certificate.

Syntax

pdfsigncontrol.TrustedCertUsageFlags(TrustedCertIndex)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of TrustedCertUsageFlags is a combination of the following flags:

Please see the TrustedCertUsage property for a text representation of TrustedCertUsageFlags.

This functionality currently is not available when the provider is OpenSSL.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

TrustedCertVersion Property (PDFSign Control)

The certificate's version number.

Syntax

pdfsigncontrol.TrustedCertVersion(TrustedCertIndex)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

String

TrustedCertSubject Property (PDFSign Control)

The subject of the certificate used for client authentication.

Syntax

pdfsigncontrol.TrustedCertSubject(TrustedCertIndex)[=string]

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is not available at design time.

Data Type

String

TrustedCertEncoded Property (PDFSign Control)

The certificate (PEM/Base64 encoded).

Syntax

pdfsigncontrol.TrustedCertEncoded(TrustedCertIndex)[=string]

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The TrustedCertStore and TrustedCertSubject properties also may be used to specify a certificate.

When TrustedCertEncoded is set, a search is initiated in the current TrustedCertStore for the private key of the certificate. If the key is found, TrustedCertSubject is updated to reflect the full subject of the selected certificate; otherwise, TrustedCertSubject is set to an empty string.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

To read or write binary data to the property, a Variant (Byte Array) version is provided in .TrustedCertEncodedB.

This property is not available at design time.

Data Type

Binary String

TrustedLists Property (PDFSign Control)

A list of known Trusted Lists for chain validation.

Syntax

pdfsigncontrol.TrustedLists[=string]

Default Value

"%EUTL%"

Remarks

This property is used to supply a semicolon-separated list of URLs or paths of known Trusted Lists to the control for chain validation.

A Trusted List is an XML document that contains a government-issued list of CAs that have passed regulated compliance checks. When validating the chain, the control will consult the Trusted List to establish certificate trust, ensuring that the CA is legitimate and entitled to issue certificates of the kind being checked.

The default value is the special %EUTL% macro, which, if applicable, instructs the control to check the root certificate against up-to-date versions of the primary EU Trusted Lists from the EU LOTL. Custom values can be appended: component.TrustedLists = "%EUTL%;http://my.company/tsl;c:\tsls\mytsl.xml"; Note: The control will cache all Trusted Lists it downloads and uses during chain validation. This cache is shared between control instances within the same process. If this property contains a URL that is also present in the cache, the control will retrieve the cached data and reuse them in the current validation. If the data are invalid, the control will download a fresh Trusted List and add it to the cache.

Data Type

String

TrustSources Property (PDFSign Control)

The trust sources to use during chain validation.

Syntax

pdfsigncontrol.TrustSources[=integer]

Possible Values

tsManual(0), 
tsLocal(1), 
tsTrustedLists(2), 
tsLocalAndTrustedLists(3)

Default Value

3

Remarks

This property is used to specify the sources the control will use to establish certificate trust during chain validation.

Establishing trust for a particular certificate, when either signing or verifying, involves building a chain up to a valid trust anchor. This trust anchor is a root certificate that typically resides on the local system. If the certificate does not eventually chain up to a valid trust anchor, the chain is considered untrusted and therefore invalid.

Possible values are:

Data Type

Integer

ValidationFlags Property (PDFSign Control)

Additional chain validation settings.

Syntax

pdfsigncontrol.ValidationFlags[=integer]

Default Value

0

Remarks

This property is used to specify additional settings that affect the overall flow of the chain validation.

Its value should be provided as a bitmask of the following flags:

Data Type

Integer

ValidationPolicy Property (PDFSign Control)

The level at which to perform chain validation.

Syntax

pdfsigncontrol.ValidationPolicy[=integer]

Possible Values

vpNone(0), 
vpFull(1), 
vpFullNoTrust(2), 
vpFullNoRevocation(3), 
vpBestEffort(4)

Default Value

1

Remarks

This property is used to specify the overall validation policy the control will follow.

Possible values are:

Validation Policy Heuristics

The choice of validation policy will depend on the scenario for which the chain is validated.

Creating a new signature:

• For a basic signature with or without a timestamp, chain validation is not required, so it is recommended to use vpNone. This policy may also be used in test environments or on offline systems.
• For an LTV signature, use vpFull or vpFullNoTrust depending on whether trust checks are necessary in the current environment. If the signature is being created in an environment that does not match the prospective validation environment, consider vpFullNoTrust to validate the chain properly and fully without expecting good trust.

Updating or extending an existing signature:

• When updating a basic signature to LTV, similarly use vpFull or vpFullNoTrust as above.
• When extending an LTV signature, similarly use vpFull or vpFullNoTrust as above.

Validating an existing signature:

• For basic signature validation, use vpFullNoRevocation if trust checks, but not revocation checks, are necessary in the current environment. This policy may also be used on offline systems if the trust anchor is already available to the control.
• For archival validation, use vpFull to validate the chain properly and fully. This policy expects the trust anchor and all the revocation material to be available.

Data Type

Integer

ValidationTime Property (PDFSign Control)

The time point at which the signature should be validated.

Syntax

pdfsigncontrol.ValidationTime[=string]

Default Value

""

Remarks

This property is used to specify the moment in time at which the signature validity should be established. The time should be provided in UTC in yyyyMMddHHmmssZ format.

Leave this property empty to stick to the default time point. The control will then prioritize:

• The signature creation time if the signature contains a signature timestamp (), or
• The local time included in the signature by the signer ().

Note: The validity of the same signature may differ depending on the time point chosen due to temporal changes in chain validities, revocation statuses, and timestamp times.

Data Type

String

AddAttachment Method (PDFSign Control)

Adds an attachment to a PDF document.

Syntax

pdfsigncontrol.AddAttachment FileName, Description

Remarks

This method is used to add an attachment (embedded file) to the document specified in InputFile, InputData, or SetInputStream and to the Attachments properties.

The document containing the newly added attachment will be saved to OutputFile, OutputData, or the stream set in SetOutputStream.

The FileName and Description parameters specify the filename and description of the attachment respectively.

Example: pdfsign.InputFile = "input.pdf"; pdfsign.OutputFile = "input_with_attachment.pdf"; pdfsign.Open(); pdfsign.AddAttachment("foo.txt", "desc"); // Alternatively, create a PDFAttachment object and add it to Attachments manually: PDFAttachment attachment = new PDFAttachment(); attachment.FileName = "foo.txt"; // or attachment.DataB = new byte[] { ... }; // or attachment.InputStream = new FileStream(...); attachment.Description = "desc"; pdfsign.Attachments.Add(attachment); // Or using one of the constructors: pdfsign.Attachments.Add(new PDFAttachment("foo.txt", "desc")); pdfsign.Close(); The full list of attachments is contained in the Attachments property.

Note: If the document is not already opened, this method will open it, perform the operation, then close it.

AddTimestamp Method (PDFSign Control)

Adds a document timestamp to a PDF document.

Syntax

pdfsigncontrol.AddTimestamp 

Remarks

This method is used to obtain a document timestamp and embed it into the document specified in InputFile, InputData, or SetInputStream. The document containing the newly added document timestamp will be saved to OutputFile, OutputData, or the stream set in SetOutputStream.

A document timestamp is a fully independent signature that is added to the PDF document after the initial signature. Unlike the main signature, the document timestamp is made by a TSA, and its purpose is to preserve the document's long-term validity. Typically, adding a document timestamp is done close to the expiration date of the certificate that produced the last timestamp (which is either embedded in the main signature, or is a previous document timestamp). An LTV document therefore contains a chain of document timestamps updated periodically to keep its long-term status.

Example: pdfsign.InputFile = "signed.pdf"; pdfsign.OutputFile = "signed_with_dts.pdf"; pdfsign.TimestampServer = "http://time.certum.pl"; pdfsign.AddTimestamp(); Note: If the document is not already opened, this method will open it, perform the operation, then close it.

Close Method (PDFSign Control)

Closes an opened PDF document.

Syntax

pdfsigncontrol.Close 

Remarks

This method is used to close the previously opened document specified in InputFile, InputData, or SetInputStream. It should always be preceded by a call to the Open method.

Example: component.InputFile = "input.pdf"; component.Open(); // Some operation component.Close();

If any changes are made to the document, they will be saved automatically to OutputFile, OutputData, or the stream set in SetOutputStream when this method is called. To configure this saving behavior, set the SaveChanges configuration setting.

Config Method (PDFSign Control)

Sets or retrieves a configuration setting.

Syntax

pdfsigncontrol.Config ConfigurationString

Remarks

Config is a generic method available in every control. It is used to set and retrieve configuration settings for the control.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the control, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

Encrypted Method (PDFSign Control)

Checks whether a PDF document is encrypted.

Syntax

pdfsigncontrol.Encrypted 

Remarks

This method is used to determine whether or not the document specified in InputFile, InputData, or SetInputStream is encrypted. It will return if the document is pseudo-encrypted with an empty password.

Example: component.InputFile = "input.pdf"; if (component.Encrypted()) { // Set Password or DecryptionCert } component.Open(); // Some operation component.Close(); Note: If the document is not already opened, this method will open it, perform the operation, then close it.

GetPageProperty Method (PDFSign Control)

Retrieves the value of a page property.

Syntax

pdfsigncontrol.GetPageProperty Page, PageProperty

Remarks

This method is used to read general information about the pages of the document specified in InputFile, InputData, or SetInputStream, such as their dimensions and content positioning details.

The Page parameter specifies the page to read information about (with a valid range from 1 to PageCount), and the PageProperty parameter specifies the page property to read. The latter can take one of the following values:

Note: Each page property is only populated once the document has been loaded, which is reported by the DocumentInfo event.

Example: int pageCount = 0; component.OnDocumentInfo += (s, e) => { pageCount = e.PageCount; }; component.InputFile = "input.pdf"; component.Open(); for (int i = 1; i <= pageCount; i++) component.GetPageProperty(i, "Height"); component.Close(); The page properties can be used to adjust the position of the signature widget based on the page dimensions. For example: int x = int.Parse(pdfsign.GetPageProperty(1, "Width")) - 100; int y = int.Parse(pdfsign.GetPageProperty(1, "Height")) - 100; pdfsign.SetWidgetProperty("OffsetX", x.ToString()); pdfsign.SetWidgetProperty("OffsetY", y.ToString()); Note: If the document is not already opened, this method will open it, perform the operation, then close it.

GetWidgetProperty Method (PDFSign Control)

Retrieves the value of a signature widget property.

Syntax

pdfsigncontrol.GetWidgetProperty SignatureIndex, WidgetProperty

Remarks

This method is used to retrieve the value of a signature widget property. Together with SetWidgetProperty, this method provides an extensible way of managing the widget settings that are not available through the primary properties of the control. The list of settings below may be extended in the future.

The SignatureIndex parameter is the index of the signature of interest in the Signatures properties, and the WidgetProperty parameter specifies the widget property to read. The latter can take one of the following values:

Example: pdfsign.InputFile = "signed.pdf"; pdfsign.Open(); bool invisible = bool.Parse(pdfsign.GetWidgetProperty(0, "Invisible")); pdfsign.Close(); Note: Each widget property is only populated after the document has been signed and the signature widget has been generated.

Note: If the document is not already opened, this method will open it, perform the operation, then close it.

Interrupt Method (PDFSign Control)

Interrupts the current action.

Syntax

pdfsigncontrol.Interrupt 

Remarks

This method interrupts the current action. It can be used, for example, within the ChainCert event to abort the chain validation procedure.

If there is no action in progress, this method simply returns, doing nothing.

Open Method (PDFSign Control)

Opens a PDF document for processing.

Syntax

pdfsigncontrol.Open 

Remarks

This method is used to open the document specified in InputFile, InputData, or SetInputStream before performing some operation on it, such as signing or updating. When finished, call Close to complete or discard the operation.

It is recommended to use this method (alongside Close) when performing multiple operations on the document at once.

Note: This method will populate the Attachments, DocumentCerts, and Signatures collections with any corresponding objects found in the document.

Automatic Decryption Functionality

If this method is called on an encrypted document, the Password or RecipientInfo event will fire (depending on the encryption type) as a notification that the document must be decrypted before processing can continue.

Once the correct decryption material is supplied, the control will then attempt to decrypt the document automatically within this method. When this occurs, the decrypted content is kept in memory so that the document's encrypted status is preserved when it is saved later. Use the Decrypt method to save a decrypted copy of the document instead.

RemoveAttachment Method (PDFSign Control)

Removes an attachment from a PDF document.

Syntax

pdfsigncontrol.RemoveAttachment Index

Remarks

This method is used to remove an attachment from the document specified in InputFile, InputData, or SetInputStream and from the Attachments properties.

The document without the attachment will be saved to OutputFile, OutputData, or the stream set in SetOutputStream.

The Index parameter is the index of the attachment in the Attachments properties to be removed.

Example: pdfsign.InputFile = "input_with_attachment.pdf"; pdfsign.OutputFile = "attachment_removed.pdf"; pdfsign.Open(); pdfsign.RemoveAttachment(0); // Alternatively, remove an attachment from Attachments manually: PDFAttachment attachment = pdfsign.Attachments[0]; pdfsign.Attachments.Remove(attachment); pdfsign.Close(); Note: If the document is not already opened, this method will open it, perform the operation, then close it.

Reset Method (PDFSign Control)

Resets the control.

Syntax

pdfsigncontrol.Reset 

Remarks

This method is used to reset the control's properties and configuration settings to their default values.

SaveAttachment Method (PDFSign Control)

Saves a PDF attachment to a file.

Syntax

pdfsigncontrol.SaveAttachment Index, FileName

Remarks

This method is used to retrieve the contents of an attachment from the document specified in InputFile, InputData, or SetInputStream and save it to the file specified by FileName. It does not modify the existence of the Attachments properties's contents.

The Index parameter is the index of the attachment in the Attachments properties to be saved.

The FileName parameter specifies the filename that the attachment will be saved to.

Example: component.InputFile = "input_with_attachment.pdf"; component.Open(); component.SaveAttachment(0, "a.dat"); component.Close(); Example (saving to a stream): component.InputFile = "input_with_attachment.pdf"; component.Attachments[0].OutputStream = myStream; component.SaveAttachment(0, null); // null means use the OutputStream property if it's set Note: If the document is not already opened, this method will open it, perform the operation, then close it.

SetWidgetProperty Method (PDFSign Control)

Sets the value of a signature widget property.

Syntax

pdfsigncontrol.SetWidgetProperty WidgetProperty, Value

Remarks

This method is used to adjust the look of the signature widget when creating a signature. Together with GetWidgetProperty, this method provides an extensible way of managing the widget settings that are not available through the primary properties of the control. The list of settings below may be extended in the future.

The WidgetProperty and Value parameters specify the widget property and value to set respectively. The former can take one of the following values:

Example: pdfsign.SetWidgetProperty("Width", "100"); pdfsign.SetWidgetProperty("Height", "100"); pdfsign.SetWidgetProperty("ShowDate", "false"); pdfsign.SetWidgetProperty("SignerInfo", "Hello\r\nworld!"); pdfsign.SetWidgetProperty("TitleFontSize", "11"); pdfsign.Sign();

Sign Method (PDFSign Control)

Signs a PDF document.

Syntax

pdfsigncontrol.Sign 

Remarks

This method is used to sign the document specified in InputFile, InputData, or SetInputStream. The document will be signed with SigningCert and saved in OutputFile, OutputData, or the stream set in SetOutputStream.

Use the following properties to adjust new signature settings:

• SignatureAuthorName
• SignatureClaimedSigningTime
• SignatureHashAlgorithm
• SignatureProfile
• SignatureReason
• SignatureType
• SignatureWidgetHeight
• SignatureWidgetOffsetX
• SignatureWidgetOffsetY
• SignatureWidgetPages
• SignatureWidgetWidth

Use the following properties to adjust chain validation parameters:

• BlockedCerts
• KnownCerts
• OfflineMode
• RevocationCheck
• TrustedCerts
• TrustedLists
• TrustSources
• ValidationFlags
• ValidationPolicy
• ValidationTime

During signing, the chain validation log will be available via the Log event if applicable.

Note: If the document is not already opened, this method will open it, perform the operation, then close it.

Signed Method (PDFSign Control)

Checks whether a PDF document is signed.

Syntax

pdfsigncontrol.Signed 

Remarks

This method is used to determine whether or not the document specified in InputFile, InputData, or SetInputStream is signed. It will return if the document contains only empty signature fields.

Example: pdfverify.InputFile = "input.pdf"; if (pdfverify.Signed()) { // Configure validation-related properties as desired pdfverify.Verify(); } Note: If the document is not already opened, this method will open it, perform the operation, then close it.

Update Method (PDFSign Control)

Updates the most recent signature.

Syntax

pdfsigncontrol.Update 

Remarks

This method is used to update the most recent signature by embedding newer or missing revocation information into the signed document specified in InputFile, InputData, or SetInputStream. The updated document will be saved to OutputFile, OutputData, or the stream set in SetOutputStream.

Updating a signature starts with its cryptographic validation. Before any new validation material is inserted, the signature's integrity must be validated. If the signature is found to be correct, the control will proceed with chain validation and the retrieval of any missing chain elements. If the signature is cryptographically wrong, the control will throw an exception.

The update approach is typically used to extend the validity of an LTV signature. For LTA signatures, updating is typically accompanied with a document timestamping operation. Set TimestampServer to have the control obtain and embed a document timestamp automatically.

Further validation material and document timestamps may be added to a document over time to maintain its authenticity and integrity.

Use the following properties to adjust chain validation parameters:

• BlockedCerts
• KnownCerts
• OfflineMode
• RevocationCheck
• TrustedCerts
• TrustedLists
• TrustSources
• ValidationFlags
• ValidationPolicy
• ValidationTime

Note: To choose a different signature to update, set the UpdateIndex configuration setting.

Note: If the document is not already opened, this method will open it, perform the operation, then close it.

ChainCert Event (PDFSign Control)

Fired when the control encounters a chain certificate.

Syntax

Sub pdfsigncontrol_ChainCert(CertEncoded As String, CertSubject As String, CertIssuer As String, ValidationTime As String, ValidationResult As Integer, ValidationDetails As Integer)

Remarks

This event is fired once for each certificate encountered during chain validation to report that it is about to be processed. The control will try to retrieve all required chain certificates automatically.

The CertEncoded parameter specifies the PEM (Base64-encoded) public certificate.

The CertSubject and CertIssuer parameters specify the distinguished names of the certificate owner and issuer respectively.

The ValidationTime parameter specifies the time point (in UTC) at which the certificate validity was established.

The ValidationResult parameter reports the outcome of the individual certificate validation and can be one of the following values:

In the case of a failure, the ValidationDetails parameter provides more details on its reasons. Its value is a bitmask of the following flags:

Overridable Chain Validation

While the control will follow the validation rules defined by the X.509 standard to the best of its ability, minor technical issues may arise when validating the chain. The ValidationResult and ValidationDetails parameters can be overridden to relax such requirements on a per-certificate basis.

For example, set ValidationResult to cvrValid and ValidationDetails to 0 in order to:

• Ignore CA or TLS key usage requirements
• Ignore the AuthorityKeyId extension in certificate-issuing CAs (helps with incorrectly renewed certificates)
• Ignore the Basic Constraints or Name Constraints extensions of CA certificates
• Tolerate some weaker algorithms
• Implicitly trust self-signed certificates
• Skip validity period checks for trusted certificates (helps with older devices that have expired root certificates)
• Ignore chain loops (helps with buggy CAs that include subchains that sign themselves)

Based on the adjusted validity of the certificate that is currently being processed, the control will continue or abort the chain validation procedure accordingly as if it had arrived at the chosen validation result itself.

Note: The user code is ultimately responsible for certificate validity decisions made via these two parameters. If their values are modified within this event, the resulting chain validation procedure may deviate from the standard.

DocumentInfo Event (PDFSign Control)

Fired when the document has been loaded into memory.

Syntax

Sub pdfsigncontrol_DocumentInfo(PageCount As Integer, SignatureCount As Integer)

Remarks

This event is fired once per document processing routine to report that the document has been processed and loaded into memory.

The handler for this event is a good place to check the document structure and access document-related information such as page number and document file details. These may be useful when preparing the signature. For example, the GetPageProperty method can be used to find the optimal position for the signature widget.

The PageCount parameter reports the number of pages in the document.

The SignatureCount parameter reports the number of signatures in the document.

This event is fired when the Open method is called, but only after Password or RecipientInfo is fired (if applicable) and the document has been decrypted.

Error Event (PDFSign Control)

Fired when information is available about errors during data delivery.

Syntax

Sub pdfsigncontrol_Error(ErrorCode As Integer, Description As String)

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the control fails with an error.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

Log Event (PDFSign Control)

Fired once for each log message.

Syntax

Sub pdfsigncontrol_Log(LogLevel As Integer, Message As String, LogType As String)

Remarks

This event is fired once for each log message generated by the control. The verbosity is controlled by the LogLevel configuration setting.

The LogLevel parameter indicates the detail level of the message. Possible values are:

The Message parameter is the log message.

The LogType parameter identifies the type of log entry. Possible values are:

• CertValidator
• Font
• HTTP
• PDFInvalidSignature
• PDFRevocationInfo
• Timestamp
• TSL

Password Event (PDFSign Control)

Fired when the control detects that the PDF document is encrypted with a password.

Syntax

Sub pdfsigncontrol_Password(Available As Boolean, Cancel As Boolean)

Remarks

This event is fired during document processing to report that the document is encrypted with a password. It may be used to supply the correct decryption password to the Password property.

The Available parameter indicates whether the decryption password is already available to the control or still needs to be set. If this parameter is set to , the correct password must be provided for the decryption attempt to succeed.

The Cancel parameter determines whether the control will stop firing this event to request a password.

RecipientInfo Event (PDFSign Control)

Fired for each recipient certificate of the encrypted PDF document.

Syntax

Sub pdfsigncontrol_RecipientInfo(Issuer As String, SerialNumber As String, SubjectKeyIdentifier As String, Available As Boolean, Cancel As Boolean)

Remarks

This event is fired during document processing for each recipient certificate that the document has been encrypted for (if applicable). It may be used to identify the certificate(s) to load and supply to the DecryptionCert property.

The Issuer parameter specifies the subject of the issuer certificate.

The SerialNumber parameter specifies the serial number of the encryption certificate.

The SubjectKeyIdentifier parameter specifies the X.509 subjectKeyIdentifier extension value of the encryption certificate, encoded as a hex string.

The Available parameter indicates whether the decryption certificate is already available to the control or still needs to be set. If this parameter is set to , the correct certificate must be provided for the decryption attempt to succeed.

The Cancel parameter determines whether the control will stop firing this event to request a certificate.

Note: The document may be encrypted with more than one certificate (or have "more than one recipient"), in which case each certificate will cause its own invocation of this event.

SignatureInfo Event (PDFSign Control)

Fired when the control finds a signature in the document.

Syntax

Sub pdfsigncontrol_SignatureInfo(SignatureIndex As Integer, ValidateSignature As Boolean, ValidateChain As Boolean)

Remarks

This event is fired once for each signature found in the document to report that the signature specified by SignatureIndex is about to be validated.

The SignatureIndex parameter is the index of the signature in the Signatures properties.

Signature validation consists of two independent stages: cryptographic signature validation and chain validation. The ValidateSignature and ValidateChain parameters determine whether each stage should be included in the validation. They can be overridden to modify the validation policy on a per-signature basis, allowing signatures to be verified individually instead of all at once (via Verify). To skip validation entirely, set both parameters to .

Use the following properties to adjust chain validation parameters:

• BlockedCerts
• KnownCerts
• OfflineMode
• RevocationCheck
• TrustedCerts
• TrustedLists
• TrustSources
• ValidationFlags
• ValidationPolicy
• ValidationTime

SignatureProcessed Event (PDFSign Control)

Fired after a signature has been processed.

Syntax

Sub pdfsigncontrol_SignatureProcessed(SignatureIndex As Integer, SignatureValidationResult As Integer, ChainValidationResult As Integer, ChainValidationDetails As Integer)

Remarks

This event is fired once for each signature found in the document to report that the signature specified by SignatureIndex has completed validation. It is fired after SignatureInfo if that event's ValidateSignature parameter is set to .

The SignatureIndex parameter is the index of the signature in the Signatures properties.

Signature validation consists of two independent stages: cryptographic signature validation and chain validation. Separate validation results are reported for each in the SignatureValidationResult and ChainValidationResult parameters.

The former reports the validity of the signature and can be one of the following values:

The latter reports the validity of the chain and can be one of the following values:

In the case of a failure, the ChainValidationDetails parameter provides more details on its reasons. Its value is a bitmask of the following flags:

Note: SignatureValidationResult, ChainValidationResult, and ChainValidationDetails are also available as properties in the PDFSignature type.

SSLServerAuthentication Event (PDFSign Control)

Fired after the server presents its certificate to the client.

Syntax

Sub pdfsigncontrol_SSLServerAuthentication(CertEncoded As String, CertSubject As String, CertIssuer As String, Status As String, Accept As Boolean)

Remarks

This event is fired during timestamping or chain validation after the server presents its SSL/TLS certificate to the control. It only applies if the TSA, CRL, OCSP, or Trusted List endpoint operates over HTTPS.

During this event, the client can decide whether or not to continue with the connection process. The Accept parameter is a recommendation on whether to continue or close the connection. This is just a suggestion: application software must use its own logic to determine whether or not to continue.

When the Accept parameter is , the Status parameter shows why the verification failed (otherwise, Status contains the string OK). If it is decided to continue, you can override and accept the certificate by setting the Accept parameter to .

SSLStatus Event (PDFSign Control)

Fired when secure connection progress messages are available.

Syntax

Sub pdfsigncontrol_SSLStatus(Message As String)

Remarks

This event is fired during timestamping or chain validation for informational and logging purposes only. This event tracks the progress of the SSL/TLS connection. It only applies if the TSA, CRL, OCSP, or Trusted List endpoint operates over HTTPS.

Config Settings (PDFSign Control)

The control accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the control, access to these internal properties is provided through the Config method.

PDFSign Config Settings

Base Config Settings

Trappable Errors (PDFSign Control)

PDFSign Errors

PDF Errors

Parsing Errors

The control may also return one of the following error codes, which are inherited from other controls.

HTTP Errors

The control may also return one of the following error codes, which are inherited from other controls.

TCPClient Errors

SSL Errors

TCP/IP Errors