PDFVerifier Component

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The PDFVerifier component verifies signatures over PDF documents.

Syntax

nsoftware.SecureBlackbox.Pdfverifier

Remarks

Use PDFVerifier to validate electronic signatures over PDF documents. Generic and PAdES signatures are supported.

PDFVerifier validates each signature from two perspectives: the integrity and validity of the signature itself (i.e. its correspondence to the document data it covers), and the validity and trustworthiness of the signing certificate chain. These two signature aspects are generally independent of each other: the signature may be valid but the chain may not be trusted, or the other way around, the chain may be trusted but the integrity of the signature may be violated. Under normal circumstances both the signature and the chain must be valid for the signature to be considered good.

To initiate the validation, assign the path to the signed PDF file to the InputFile property (alternatively, you can provide it in a memory buffer via the InputBytes property), and call the Verify method. For every signature located in the document, PDFVerifier will fire the SignatureFound event. This event lets you specify whether you want PDFVerifier to validate the signature, the chain, or both.

Note: it does not mean that any of the two is optional. This API lets you be flexible in how you validate documents in your code in accordance with the specifics of your application and its usage scenarios. For example, if your trust environment relies on certificate pinning, validating the chain by PDFVerifier internally may cause unnecessary burden on the system, in which case it may be reasonable to disable it in the event handler.

Once SignatureFound returns, PDFVerifier proceeds to the signature validation routine in accordance with the provided settings. Upon completion of the validation, the SignatureValidated event is fired, and the validation results are separately provided via the SignatureValidationResult and ChainValidationResult fields of the associated signature object. Other information about the signature can be accessed via the Signatures property.

The PDF format uses incremental updates to introduce changes to the document. This implies that a signature may cover not the whole document, but rather a certain revision of it. Strictly speaking, every signature in a PDF document, apart from perhaps the last one, covers just some part of the document. In most cases that part matches the revision of the document that existed before all the subsequent signatures had been added.

Because of these specifics of the PDF format, it is crucially important to understand which part of the document is covered by a specific signature. Use the CoverageEndsAt field to establish the scope of a signature. The revision of the document covered by that specific signature ranges from byte 0 to CoverageEndsAt. Alternatively, you can use the GetSignedVersion method to extract the signed revision to a file.

Useful settings and properties

The following properties of PDFVerifier may be handy when working with this component:

  • OfflineMode lets you validate the document without contacting online revocation sources. Paired with switched-off system trust settings, it can be used to establish the long-term validity of the document and the completeness of the validation material included in it.
  • RevocationCheck lets you adjust the revocation checking preferences.
  • ValidatedSigningTime returns the signing time as recorded in the embedded signature timestamp. This is in contrast to ClaimedSigningTime, which returns the signing time as specified by the signer.
  • ValidationLog is a great way to find out the details of chain validation failures. This property returns a comprehensive validation log that reports all the issues encountered during the validation.
  • If the document is encrypted (in addition to being signed), the Encrypted event will fire, asking you for the decryption certificate or password.

By default, PDFVerifier uses the system trust settings to establish certificate chain validity. You can configure it to use your own, custom validation environment by providing the necessary trust elements via KnownCertificates, TrustedCertificates, KnownCRLs, and other similar properties.

Property List


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

AllSignaturesValidThe cumulative validity of all signatures.
AttachedFilesProvides details of all attached files found in the PDF document.
AutoValidateSignaturesSpecifies whether PDFVerifier should validate any present signatures when the document is opened.
BlockedCertificatesThe certificates that must be rejected as trust anchors.
CertificatesA collection of certificates included in the electronic signature.
CRLsA collection of certificate revocation lists embedded into the signature by the signer.
DecryptionCertificateA decryption certificate.
DocumentInfoContains information about the document properties.
FIPSModeReserved.
IgnoreChainValidationErrorsMakes the component tolerant to chain validation errors.
InputBytesUse this property to pass the input to component in byte array form.
InputFileA path to the signed PDF file.
InputStreamA stream containing the PDF document to be verified.
KnownCertificatesAdditional certificates for chain validation.
KnownCRLsAdditional CRLs for chain validation.
KnownOCSPsAdditional OCSP responses for chain validation.
OCSPsA collection of OCSP responses embedded into the signature.
OfflineModeSwitches the component to offline mode.
OutputBytesUse this property to read the output the component object has produced.
OutputFileThe file to save the signed or updated document to.
OutputStreamThe stream to write the signed document to.
PagesA list of pages contained in the document.
PasswordThe decryption password.
ProfileSpecifies a pre-defined profile to apply when creating the signature.
ProxyThe proxy server settings.
RevocationCheckSpecifies the kind(s) of revocation check to perform for all chain certificates.
SignaturesProvides details of all signatures found in the PDF document.
SocketSettingsManages network connection settings.
TimestampsContains a collection of timestamps for the processed document.
TLSClientChainThe TLS client certificate chain.
TLSServerChainThe TLS server's certificate chain.
TLSSettingsManages TLS layer settings.
TrustedCertificatesA list of trusted certificates for chain validation.
ValidationMomentThe time point at which signature validity is to be established.

Method List


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

CloseCloses an opened document.
ConfigSets or retrieves a configuration setting.
DoActionPerforms an additional action.
GetAttachedBytesSaves a PDF attachment to a byte array.
GetAttachedFileSaves a PDF attachment to a file.
GetAttachedStreamSaves a PDF attachment to a stream.
GetSignedVersionReturns the part of the document that is covered by the signature.
OpenOpens a document for verifying or removing signatures.
RevalidateRevalidates a signature in accordance with current settings.
UnsignDeletes a signature from the document.
VerifyVerifies a signed PDF document.

Event List


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

ChainElementDownloadFires when there is a need to download a chain element from an online source.
ChainElementNeededFires when an element required to validate the chain was not located.
ChainValidatedReports the completion of a certificate chain validation.
ChainValidationProgressThis event is fired multiple times during chain validation to report various stages of the validation procedure.
DocumentLoadedThis event is fired when the document has been loaded into memory.
EncryptedNotifies the application that the document is encrypted and provides recipient certificate details if asymmetric encryption was used to encrypt the document.
ErrorInformation about errors during signing/validation.
NotificationThis event notifies the application about an underlying control flow event.
SignatureFoundSignifies the start of signature validation.
SignatureValidatedMarks the completion of the signature validation routine.
TimestampFoundSignifies the start of a timestamp validation routine.
TimestampValidatedReports the completion of the timestamp validation routine.
TLSCertNeededFires when a remote TLS party requests a client certificate.
TLSCertValidateThis event is fired upon receipt of the TLS server's certificate, allowing the user to control its acceptance.
TLSEstablishedFires when a TLS handshake with Host successfully completes.
TLSHandshakeFires when a new TLS handshake is initiated, before the handshake commences.
TLSShutdownReports the graceful closure of a TLS connection.

Config Settings


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

DislikeOpenEndedOCSPsTells the component to discourage OCSP responses without an explicit NextUpdate parameter.
EmptySignatureFieldAddRevInfo[Index]Specifies if revocation checking should be performed.
EmptySignatureFieldAlternateName[Index]Contains an alternate field name.
EmptySignatureFieldCountThe number of empty signature form fields.
EmptySignatureFieldFlags[Index]The field flags of the signature form field.
EmptySignatureFieldHeight[Index]The Height of the empty signature form field.
EmptySignatureFieldInvisible[Index]The visibility status of the field.
EmptySignatureFieldLegalAttestations[Index]Specifies the legal attestations that are associated with the signature.
EmptySignatureFieldMappingName[Index]The mapping name to be used when exporting form field data from the document.
EmptySignatureFieldName[Index]Textual field name.
EmptySignatureFieldOffsetX[Index]The field's offset from the left page border.
EmptySignatureFieldOffsetY[Index]The field's offset from the bottom page border.
EmptySignatureFieldPage[Index]The index of the form field's page in the document.
EmptySignatureFieldRequiredAllowedChanges[Index]Specifies the changes allowed by the signature.
EmptySignatureFieldRequiredConstraints[Index]Specifies the required Seed Value Dictionary (SVD) constraints.
EmptySignatureFieldRequiredDigestAlgorithms[Index]Specifies the required digest algorithms.
EmptySignatureFieldRequiredFilter[Index]Specifies the required filter.
EmptySignatureFieldRequiredLockAction[Index]Indicates which set of fields shall be locked.
EmptySignatureFieldRequiredLockFields[Index]Indicates the fields that shall be locked on signing.
EmptySignatureFieldRequiredReasons[Index]Specifies the required reasons.
EmptySignatureFieldRequiredSubfilters[Index]Specifies the required subfilters.
EmptySignatureFieldTimestampRequired[Index]Specifies if the signature should be timestamped.
EmptySignatureFieldTSPURL[Index]URL for a TSP server.
EmptySignatureFieldWidth[Index]The Width of the empty signature form field.
EncryptionHandlerNameSpecifies the custom security handler PDF-name.
ForceCompleteChainValidationWhether to check issuer (CA) certificates when the signing certificate is invalid.
ForceCompleteChainValidationForTrustedWhether to continue with the full validation up to the root CA certificate for mid-level trust anchors.
GracePeriodSpecifies a grace period to apply during revocation information checks.
HardenedKeyGenerationSpecifies if hardened Key generation should be used.
IgnoreChainLoopsWhether chain loops should be ignored.
IgnoreOCSPNoCheckExtensionWhether the OCSP NoCheck extension should be ignored.
IgnoreSystemTrustWhether trusted Windows Certificate Stores should be treated as trusted.
ImplicitlyTrustSelfSignedCertificatesWhether to trust self-signed certificates.
PageInfoCountThe number of pages.
PageInfoCropBoxEmpty[Index]Check if the page's crop box is empty or not.
PageInfoCropLLX[Index]Defines the X coordinate of the lower left corner of the crop box.
PageInfoCropLLY[Index]Defines the Y coordinate of the lower left corner of the crop box.
PageInfoCropURX[Index]Defines the X coordinate of the upper right corner of the crop box.
PageInfoCropURY[Index]Defines the Y coordinate of the upper right corner of the crop box.
PageInfoHeight[Index]The Height of the page.
PageInfoMediaLLX[Index]Defines the X coordinate of the lower left corner of the media box.
PageInfoMediaLLY[Index]Defines the Y coordinate of the lower left corner of the media box.
PageInfoMediaURX[Index]Defines the X coordinate of the upper right corner of the media box.
PageInfoMediaURY[Index]Defines the Y coordinate of the upper right corner of the media box.
PageInfoRotate[Index]The Rotate value of the page.
PageInfoUserUnit[Index]Defines the size of default user space units.
PageInfoWidth[Index]The Width of the page.
PromoteLongOCSPResponsesWhether long OCSP responses are requested.
PSSUsedWhether RSASSA-PSS mode was used.
RC4KeyBitsSpecifies the number of key bits used for the RC4 algorithm.
TolerateMinorChainIssuesWhether to tolerate minor chain issues.
UseMicrosoftCTLEnables or disables the automatic use of the Microsoft online certificate trust list.
UseSystemCertificatesEnables or disables the use of the system certificates.
UseValidationCacheEnables or disable the use of the product-wide certificate chain validation cache.
CheckKeyIntegrityBeforeUseEnables or disable private key integrity check before use.
CookieCachingSpecifies whether a cookie cache should be used for HTTP(S) transports.
CookiesGets or sets local cookies for the component.
DefDeriveKeyIterationsSpecifies the default key derivation algorithm iteration count.
EnableClientSideSSLFFDHEEnables or disables finite field DHE key exchange support in TLS clients.
GlobalCookiesGets or sets global cookies for all the HTTP transports.
HttpUserAgentSpecifies the user agent name to be used by all HTTP clients.
LogDestinationSpecifies the debug log destination.
LogDetailsSpecifies the debug log details to dump.
LogFileSpecifies the debug log filename.
LogFiltersSpecifies the debug log filters.
LogFlushModeSpecifies the log flush mode.
LogLevelSpecifies the debug log level.
LogMaxEventCountSpecifies the maximum number of events to cache before further action is taken.
LogRotationModeSpecifies the log rotation mode.
MaxASN1BufferLengthSpecifies the maximal allowed length for ASN.1 primitive tag data.
MaxASN1TreeDepthSpecifies the maximal depth for processed ASN.1 trees.
OCSPHashAlgorithmSpecifies the hash algorithm to be used to identify certificates in OCSP requests.
StaticDNSSpecifies whether static DNS rules should be used.
StaticIPAddress[domain]Gets or sets an IP address for the specified domain name.
StaticIPAddressesGets or sets all the static DNS rules.
TagAllows to store any custom data.
TLSSessionGroupSpecifies the group name of TLS sessions to be used for session resumption.
TLSSessionLifetimeSpecifies lifetime in seconds of the cached TLS session.
TLSSessionPurgeIntervalSpecifies how often the session cache should remove the expired TLS sessions.
UseOwnDNSResolverSpecifies whether the client components should use own DNS resolver.
UseSharedSystemStoragesSpecifies whether the validation engine should use a global per-process copy of the system certificate stores.
UseSystemOAEPAndPSSEnforces or disables the use of system-driven RSA OAEP and PSS computations.
UseSystemRandomEnables or disables the use of the OS PRNG.

AllSignaturesValid Property (PDFVerifier Component)

The cumulative validity of all signatures.

Syntax

public bool AllSignaturesValid { get; }
Public ReadOnly Property AllSignaturesValid As Boolean

Default Value

False

Remarks

Use this property to check if all the signatures found in the message or document are valid.

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

AttachedFiles Property (PDFVerifier Component)

Provides details of all attached files found in the PDF document.

Syntax

public MailAttachmentList AttachedFiles { get; }
Public ReadOnly Property AttachedFiles As MailAttachmentList

Remarks

Use this property to get the details of all the attached files identified in the document.

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

Please refer to the MailAttachment type for a complete list of fields.

AutoValidateSignatures Property (PDFVerifier Component)

Specifies whether PDFVerifier should validate any present signatures when the document is opened.

Syntax

public bool AutoValidateSignatures { get; set; }
Public Property AutoValidateSignatures As Boolean

Default Value

True

Remarks

This setting is switched on by default. You can choose to set this property to false in order to validate the signatures manually on a later stage using the Revalidate method.

BlockedCertificates Property (PDFVerifier Component)

The certificates that must be rejected as trust anchors.

Syntax

public CertificateList BlockedCertificates { get; }
Public Property BlockedCertificates As CertificateList

Remarks

Use this property to provide a list of compromised or blocked certificates. Any chain containing a blocked certificate will fail validation.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

Certificates Property (PDFVerifier Component)

A collection of certificates included in the electronic signature.

Syntax

public CertificateList Certificates { get; }
Public ReadOnly Property Certificates As CertificateList

Remarks

Use this property to access all certificates included into the signature(s) by its creator.

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

Please refer to the Certificate type for a complete list of fields.

CRLs Property (PDFVerifier Component)

A collection of certificate revocation lists embedded into the signature by the signer.

Syntax

public CRLList CRLs { get; }
Public ReadOnly Property CRLs As CRLList

Remarks

Use this property to access the CRLs embedded into the signature by the signer.

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

Please refer to the CRL type for a complete list of fields.

DecryptionCertificate Property (PDFVerifier Component)

A decryption certificate.

Syntax

public Certificate DecryptionCertificate { get; set; }
Public Property DecryptionCertificate As Certificate

Remarks

Use this property to provide the decryption certificate. The certificate should have a private key associated with it.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

DocumentInfo Property (PDFVerifier Component)

Contains information about the document properties.

Syntax

public PDFDocumentInfo DocumentInfo { get; }
Public ReadOnly Property DocumentInfo As PDFDocumentInfo

Remarks

Use this property to access general parameters of the document being processed. A good place to check this property is in the handler of the DocumentLoaded event.

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

Please refer to the PDFDocumentInfo type for a complete list of fields.

FIPSMode Property (PDFVerifier Component)

Reserved.

Syntax

public bool FIPSMode { get; set; }
Public Property FIPSMode As Boolean

Default Value

False

Remarks

This property is reserved for future use.

IgnoreChainValidationErrors Property (PDFVerifier Component)

Makes the component tolerant to chain validation errors.

Syntax

public bool IgnoreChainValidationErrors { get; set; }
Public Property IgnoreChainValidationErrors As Boolean

Default Value

False

Remarks

If this property is set to True, any errors emerging during certificate chain validation will be ignored. This setting may be handy if the purpose of validation is the creation of an LTV signature, and the validation is performed in an environment that doesn't trust the signer's certificate chain.

InputBytes Property (PDFVerifier Component)

Use this property to pass the input to component in byte array form.

Syntax

public byte[] InputBytes { get; set; }
Public Property InputBytes As Byte()

Remarks

Assign a byte array containing the data to be processed to this property.

This property is not available at design time.

InputFile Property (PDFVerifier Component)

A path to the signed PDF file.

Syntax

public string InputFile { get; set; }
Public Property InputFile As String

Default Value

""

Remarks

Assign the path to the PDF file to be verified to this property.

InputStream Property (PDFVerifier Component)

A stream containing the PDF document to be verified.

Syntax

public System.IO.Stream InputStream { get; set; }
Public Property InputStream As System.IO.Stream

Default Value

null

Remarks

Use this property to pass the stream containing the signed document to the component.

This property is not available at design time.

KnownCertificates Property (PDFVerifier Component)

Additional certificates for chain validation.

Syntax

public CertificateList KnownCertificates { get; }
Public Property KnownCertificates As CertificateList

Remarks

Use this property to supply a list of additional certificates that might be needed for chain validation. An example of a scenario where you might want to do that is when intermediary CA certificates are absent from the standard system locations (or when there are no standard system locations), and therefore should be supplied to the component manually.

The purpose of the certificates to be added to this collection is roughly equivalent to that of the Intermediate Certification Authorities system store in Windows.

Do not add trust anchors or root certificates to this collection: add them to TrustedCertificates instead.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

KnownCRLs Property (PDFVerifier Component)

Additional CRLs for chain validation.

Syntax

public CRLList KnownCRLs { get; }
Public Property KnownCRLs As CRLList

Remarks

Use this property to supply additional CRLs that might be needed for chain validation. This property may be helpful when a chain is validated in offline mode, and the associated CRLs are stored separately from the signed message or document.

This property is not available at design time.

Please refer to the CRL type for a complete list of fields.

KnownOCSPs Property (PDFVerifier Component)

Additional OCSP responses for chain validation.

Syntax

public OCSPResponseList KnownOCSPs { get; }
Public Property KnownOCSPs As OCSPResponseList

Remarks

Use this property to supply additional OCSP responses that might be needed for chain validation. This property may be helpful when a chain is validated in offline mode, and the associated OCSP responses are stored separately from the signed message or document.

This property is not available at design time.

Please refer to the OCSPResponse type for a complete list of fields.

OCSPs Property (PDFVerifier Component)

A collection of OCSP responses embedded into the signature.

Syntax

public OCSPResponseList OCSPs { get; }
Public ReadOnly Property OCSPs As OCSPResponseList

Remarks

Use this property to access the OCSP responses embedded into the signature by its creator.

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

Please refer to the OCSPResponse type for a complete list of fields.

OfflineMode Property (PDFVerifier Component)

Switches the component to offline mode.

Syntax

public bool OfflineMode { get; set; }
Public Property OfflineMode As Boolean

Default Value

False

Remarks

When working in offline mode, the component restricts itself from using any online revocation information sources, such as CRL or OCSP responders.

Offline mode may be useful if there is a need to verify the completeness of the validation information included within the signature or provided via KnownCertificates, KnownCRLs, and other related properties.

OutputBytes Property (PDFVerifier Component)

Use this property to read the output the component object has produced.

Syntax

public byte[] OutputBytes { get; }
Public ReadOnly Property OutputBytes As Byte()

Remarks

Read the contents of this property after the operation has completed to read the produced output. This property will only be set if the OutputFile and OutputStream properties had not been assigned.

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

OutputFile Property (PDFVerifier Component)

The file to save the signed or updated document to.

Syntax

public string OutputFile { get; set; }
Public Property OutputFile As String

Default Value

""

Remarks

Use this property to provide a path where the resulting PDF document should be saved to.

OutputStream Property (PDFVerifier Component)

The stream to write the signed document to.

Syntax

public System.IO.Stream OutputStream { get; set; }
Public Property OutputStream As System.IO.Stream

Default Value

null

Remarks

Use this property to provide a stream where the resulting PDF document should be written to.

This property is not available at design time.

Pages Property (PDFVerifier Component)

A list of pages contained in the document.

Syntax

public PDFPageList Pages { get; }
Public ReadOnly Property Pages As PDFPageList

Remarks

Use this property to read document page information. This property is initialized when the DocumentLoaded event fires.

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

Please refer to the PDFPage type for a complete list of fields.

Password Property (PDFVerifier Component)

The decryption password.

Syntax

public string Password { get; set; }
Public Property Password As String

Default Value

""

Remarks

Use this property to provide the decryption password.

Profile Property (PDFVerifier Component)

Specifies a pre-defined profile to apply when creating the signature.

Syntax

public string Profile { get; set; }
Public Property Profile As String

Default Value

""

Remarks

Advanced signatures come in many variants, which are often defined by parties that needs to process them or by local standards. SecureBlackbox profiles are sets of pre-defined configurations which correspond to particular signature variants. By specifying a profile, you are pre-configuring the component to make it produce the signature that matches the configuration corresponding to that profile.

Proxy Property (PDFVerifier Component)

The proxy server settings.

Syntax

public ProxySettings Proxy { get; }
Public ReadOnly Property Proxy As ProxySettings

Remarks

Use this property to tune up the proxy server settings.

This property is read-only.

Please refer to the ProxySettings type for a complete list of fields.

RevocationCheck Property (PDFVerifier Component)

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

Syntax

public PdfverifierRevocationChecks RevocationCheck { get; set; }

enum PdfverifierRevocationChecks { crcNone, crcAuto, crcAllCRL, crcAllOCSP, crcAllCRLAndOCSP, crcAnyCRL, crcAnyOCSP, crcAnyCRLOrOCSP, crcAnyOCSPOrCRL }
Public Property RevocationCheck As PdfverifierRevocationChecks

Enum PdfverifierRevocationChecks crcNone crcAuto crcAllCRL crcAllOCSP crcAllCRLAndOCSP crcAnyCRL crcAnyOCSP crcAnyCRLOrOCSP crcAnyOCSPOrCRL End Enum

Default Value

1

Remarks

Revocation checking is necessary to ensure the integrity of the chain and obtain up-to-date certificate validity and trustworthiness information.

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

crcNone0No revocation checking.
crcAuto1Automatic mode selection. Currently this maps to crcAnyOCSPOrCRL, but it may change in the future.
crcAllCRL2All provided CRL endpoints will be checked, and all checks must succeed.
crcAllOCSP3All provided OCSP endpoints will be checked, and all checks must succeed.
crcAllCRLAndOCSP4All provided CRL and OCSP endpoints will be checked, and all checks must succeed.
crcAnyCRL5All provided CRL endpoints will be checked, and at least one check must succeed.
crcAnyOCSP6All provided OCSP endpoints will be checked, and at least one check must succeed.
crcAnyCRLOrOCSP7All provided CRL and OCSP endpoints will be checked, and at least one check must succeed. CRL endpoints are checked first.
crcAnyOCSPOrCRL8All provided CRL and OCSP endpoints will be checked, and at least one check must succeed. OCSP endpoints are checked first.

This setting controls the way the revocation checks are performed for every certificate in the chain. Typically certificates come with two types of revocation information sources: CRL (certificate revocation lists) and OCSP responders. 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 some delay between the time when a certificate was revoked and the time the subsequent CRL mentioning that is published. The benefits of CRL is 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 setting lets you adjust the validation course by including or excluding certain types of revocation sources from the validation process. The crcAnyOCSPOrCRL 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 "crcAll*" 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.

Signatures Property (PDFVerifier Component)

Provides details of all signatures found in the PDF document.

Syntax

public PDFSignatureList Signatures { get; }
Public ReadOnly Property Signatures As PDFSignatureList

Remarks

Upon completion of the validation process conducted by the Verify method, all the signature details are populated in this property.

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

Please refer to the PDFSignature type for a complete list of fields.

SocketSettings Property (PDFVerifier Component)

Manages network connection settings.

Syntax

public SocketSettings SocketSettings { get; }
Public ReadOnly Property SocketSettings As SocketSettings

Remarks

Use this property to tune up network connection parameters.

This property is read-only.

Please refer to the SocketSettings type for a complete list of fields.

Timestamps Property (PDFVerifier Component)

Contains a collection of timestamps for the processed document.

Syntax

public TimestampInfoList Timestamps { get; }
Public ReadOnly Property Timestamps As TimestampInfoList

Remarks

Use this property to access the timestamps included in the processed document.

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

Please refer to the TimestampInfo type for a complete list of fields.

TLSClientChain Property (PDFVerifier Component)

The TLS client certificate chain.

Syntax

public CertificateList TLSClientChain { get; }
Public Property TLSClientChain As CertificateList

Remarks

Assign a certificate chain to this property to enable TLS client authentication in the component. Note that the client's end-entity certificate should have a private key associated with it.

Use the CertificateStorage or CertificateManager components to import the certificate from a file, system store, or PKCS11 device.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

TLSServerChain Property (PDFVerifier Component)

The TLS server's certificate chain.

Syntax

public CertificateList TLSServerChain { get; }
Public ReadOnly Property TLSServerChain As CertificateList

Remarks

Use this property to access the certificate chain sent by the TLS server. This property is ready to read when the TLSCertValidate event is fired by the client component.

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

Please refer to the Certificate type for a complete list of fields.

TLSSettings Property (PDFVerifier Component)

Manages TLS layer settings.

Syntax

public TLSSettings TLSSettings { get; }
Public ReadOnly Property TLSSettings As TLSSettings

Remarks

Use this property to tune up the TLS layer parameters.

This property is read-only.

Please refer to the TLSSettings type for a complete list of fields.

TrustedCertificates Property (PDFVerifier Component)

A list of trusted certificates for chain validation.

Syntax

public CertificateList TrustedCertificates { get; }
Public Property TrustedCertificates As CertificateList

Remarks

Use this property to supply a list of trusted certificates that might be needed for chain validation. An example of a scenario where you might want to do that is when root CA certificates are absent from the standard system locations (or when there are no standard system locations), and therefore should be supplied to the component manually.

The purpose of this certificate collection is largely the same as that of the Windows Trusted Root Certification Authorities system store.

Use this property with extreme care as it directly affects chain verifiability; a wrong certificate added to the trusted list may result in bad chains being accepted, and forfeited signatures being recognized as genuine. Only add certificates that originate from the parties that you know and trust.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

ValidationMoment Property (PDFVerifier Component)

The time point at which signature validity is to be established.

Syntax

public string ValidationMoment { get; set; }
Public Property ValidationMoment As String

Default Value

""

Remarks

Use this property to specify the moment in time at which signature validity should be established. The time is in UTC. Leave the setting empty to stick to the default moment (either the signature creation time or the current time).

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.

Close Method (PDFVerifier Component)

Closes an opened document.

Syntax

public void Close(bool saveChanges);
Public Sub Close(ByVal SaveChanges As Boolean)

Remarks

Use this method to close a previously opened document. The SaveChanges parameter is only taken into account if the document was opened in edit mode.

Config Method (PDFVerifier Component)

Sets or retrieves a configuration setting.

Syntax

public string Config(string configurationString);
Public Function Config(ByVal ConfigurationString As String) As String

Remarks

Config is a generic method available in every component. It is used to set and retrieve configuration settings for the component.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, 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.

DoAction Method (PDFVerifier Component)

Performs an additional action.

Syntax

public string DoAction(string actionID, string actionParams);
Public Function DoAction(ByVal ActionID As String, ByVal ActionParams As String) As String

Remarks

DoAction is a generic method available in every component. It is used to perform an additional action introduced after the product major release. The list of actions is not fixed, and may be flexibly extended over time.

The unique identifier (case insensitive) of the action is provided in the ActionID parameter.

ActionParams contains the value of a single parameter, or a list of multiple parameters for the action in the form of PARAM1=VALUE1;PARAM2=VALUE2;....

GetAttachedBytes Method (PDFVerifier Component)

Saves a PDF attachment to a byte array.

Syntax

public byte[] GetAttachedBytes(int index);
Public Function GetAttachedBytes(ByVal Index As Integer) As Byte()

Remarks

Use this method to retrieve the contents of an attached file as a byte array.

GetAttachedFile Method (PDFVerifier Component)

Saves a PDF attachment to a file.

Syntax

public void GetAttachedFile(int index, string path);
Public Sub GetAttachedFile(ByVal Index As Integer, ByVal Path As String)

Remarks

Use this method to retrieve the contents of an attached file and save it to a file.

GetAttachedStream Method (PDFVerifier Component)

Saves a PDF attachment to a stream.

Syntax

public void GetAttachedStream(int index, System.IO.Stream stream);
Public Sub GetAttachedStream(ByVal Index As Integer, ByVal Stream As System.IO.Stream)

Remarks

Use this method to retrieve the contents of an attached file and save it to a stream.

GetSignedVersion Method (PDFVerifier Component)

Returns the part of the document that is covered by the signature.

Syntax

public void GetSignedVersion(int sigIndex);
Public Sub GetSignedVersion(ByVal SigIndex As Integer)

Remarks

Use this method to retrieve the revision of the document that is covered by the SigIndex signature.

PDF documents often use the incremental updates approach, with any changes being appended to the document without altering the existing revision. This may lead to situations where a signature only covers a part of the document (one of the past revisions), but not the subsequent changes. This method provides means to extract the revision that is actually certified by the signature.

It is recommended that you use this method when validating signatures to make sure the signature covers what you expect it to cover.

An alternative to this method is to check the CoverageEndsAt field of the signature object and match it to the document length.

Open Method (PDFVerifier Component)

Opens a document for verifying or removing signatures.

Syntax

public void Open(bool editMode);
Public Sub Open(ByVal EditMode As Boolean)

Remarks

Use this method to open a document for verifying or removing signatures, or for extracting signed content. When finished, call Close to complete the operation and release any allocated resources.

Set EditMode to true to open the document in edit mode (only useful if you intend to remove signatures).

Revalidate Method (PDFVerifier Component)

Revalidates a signature in accordance with current settings.

Syntax

public void Revalidate(int index);
Public Sub Revalidate(ByVal Index As Integer)

Remarks

Use this method to revalidate a signature in the opened PDF document.

Unsign Method (PDFVerifier Component)

Deletes a signature from the document.

Syntax

public void Unsign(int sigIndex, int unsignKind);
Public Sub Unsign(ByVal SigIndex As Integer, ByVal UnsignKind As Integer)

Remarks

Use this method to delete an existing signature from the document. Use the SigIndex parameter to specify the signature to be removed.

Unsigning is different from GetSignedVersion. The latter returns the revision of the document including the mentioned signature (thus removing anything added after that signature was created). Unsign removes the signature completely by carving it out of the document.

The following unsign kinds are currently supported:

uskDefault (0)The default option.
uskFull (1)Remove the signature fully. This is also the default option.
uskKeepField (2)Only remove the signature, but keep the form field it is in.
uskKeepAppearance (3)Remove the signature, but keep the form field and its widget.

Note: SigIndex set to -1 removes all signatures in the document.

Verify Method (PDFVerifier Component)

Verifies a signed PDF document.

Syntax

public void Verify();
Public Sub Verify()

Remarks

Use this method to validate all signatures in a PDF document.

This method walks through a signed document and reports every signature via the SignatureFound event. Subscribe to the event to be notified about the signatures and adjust validation settings on the fly.

Upon completion of this method, the signature details will be published in the Signatures property.

This method only validates the signatures, but does not check their coverage. It is a good idea to use mechanisms such as GetSignedVersion or CoverageEndsAt to ensure that the signature covers the expected document revision.

ChainElementDownload Event (PDFVerifier Component)

Fires when there is a need to download a chain element from an online source.

Syntax

public event OnChainElementDownloadHandler OnChainElementDownload;

public delegate void OnChainElementDownloadHandler(object sender, PdfverifierChainElementDownloadEventArgs e);

public class PdfverifierChainElementDownloadEventArgs : EventArgs {
  public int Kind { get; }
  public string CertRDN { get; }
  public string CACertRDN { get; }
  public string Location { get; }
  public int Action { get; set; }
}
Public Event OnChainElementDownload As OnChainElementDownloadHandler

Public Delegate Sub OnChainElementDownloadHandler(sender As Object, e As PdfverifierChainElementDownloadEventArgs)

Public Class PdfverifierChainElementDownloadEventArgs Inherits EventArgs
  Public ReadOnly Property Kind As Integer
  Public ReadOnly Property CertRDN As String
  Public ReadOnly Property CACertRDN As String
  Public ReadOnly Property Location As String
  Public Property Action As Integer
End Class

Remarks

Subscribe to this event to be notified about validation element retrievals. Use the Action parameter to suppress the download if required.

veaAuto0Handle the action automatically (the default behaviour)

veaContinue1Accept the request implied by the event (accept the certificate, allow the object retrieval)

veaReject2Reject the request implied by the event (reject the certificate, disallow the object retrieval)

veaAcceptNow3Accept the validated certificate immediately

veaAbortNow4Abort the validation, reject the certificate

ChainElementNeeded Event (PDFVerifier Component)

Fires when an element required to validate the chain was not located.

Syntax

public event OnChainElementNeededHandler OnChainElementNeeded;

public delegate void OnChainElementNeededHandler(object sender, PdfverifierChainElementNeededEventArgs e);

public class PdfverifierChainElementNeededEventArgs : EventArgs {
  public int Kind { get; }
  public string CertRDN { get; }
  public string CACertRDN { get; }
}
Public Event OnChainElementNeeded As OnChainElementNeededHandler

Public Delegate Sub OnChainElementNeededHandler(sender As Object, e As PdfverifierChainElementNeededEventArgs)

Public Class PdfverifierChainElementNeededEventArgs Inherits EventArgs
  Public ReadOnly Property Kind As Integer
  Public ReadOnly Property CertRDN As String
  Public ReadOnly Property CACertRDN As String
End Class

Remarks

Subscribe to this event to be notified about missing validation elements. Use the KnownCRLs, KnownCertificates, and KnownOCSPs properties in the event handler to provide the missing piece.

ChainValidated Event (PDFVerifier Component)

Reports the completion of a certificate chain validation.

Syntax

public event OnChainValidatedHandler OnChainValidated;

public delegate void OnChainValidatedHandler(object sender, PdfverifierChainValidatedEventArgs e);

public class PdfverifierChainValidatedEventArgs : EventArgs {
  public int Index { get; }
  public string SubjectRDN { get; }
  public int ValidationResult { get; }
  public int ValidationDetails { get; }
}
Public Event OnChainValidated As OnChainValidatedHandler

Public Delegate Sub OnChainValidatedHandler(sender As Object, e As PdfverifierChainValidatedEventArgs)

Public Class PdfverifierChainValidatedEventArgs Inherits EventArgs
  Public ReadOnly Property Index As Integer
  Public ReadOnly Property SubjectRDN As String
  Public ReadOnly Property ValidationResult As Integer
  Public ReadOnly Property ValidationDetails As Integer
End Class

Remarks

This event is fired when a certificate chain validation routine completes. SubjectRDN identifies the owner of the validated certificate.

ValidationResult set to 0 (zero) indicates successful chain validation.

cvtValid0The chain is valid

cvtValidButUntrusted1The chain is valid, but the root certificate is not trusted

cvtInvalid2The chain is not valid (some of certificates are revoked, expired, or contain an invalid signature)

cvtCantBeEstablished3The validity of the chain cannot be established because of missing or unavailable validation information (certificates, CRLs, or OCSP responses)

Any other value reports a failure, and ValidationDetails provides more details on its reasons.
cvrBadData0x0001One or more certificates in the validation path are malformed

cvrRevoked0x0002One or more certificates are revoked

cvrNotYetValid0x0004One or more certificates are not yet valid

cvrExpired0x0008One or more certificates are expired

cvrInvalidSignature0x0010A certificate contains a non-valid digital signature

cvrUnknownCA0x0020A CA certificate for one or more certificates has not been found (chain incomplete)

cvrCAUnauthorized0x0040One of the CA certificates are not authorized to act as CA

cvrCRLNotVerified0x0080One or more CRLs could not be verified

cvrOCSPNotVerified0x0100One or more OCSP responses could not be verified

cvrIdentityMismatch0x0200The identity protected by the certificate (a TLS endpoint or an e-mail addressee) does not match what is recorded in the certificate

cvrNoKeyUsage0x0400A mandatory key usage is not enabled in one of the chain certificates

cvrBlocked0x0800One or more certificates are blocked

cvrFailure0x1000General validation failure

cvrChainLoop0x2000Chain loop: one of the CA certificates recursively signs itself

cvrWeakAlgorithm0x4000A weak algorithm is used in one of certificates or revocation elements

cvrUserEnforced0x8000The chain was considered invalid following intervention from a user code

ChainValidationProgress Event (PDFVerifier Component)

This event is fired multiple times during chain validation to report various stages of the validation procedure.

Syntax

public event OnChainValidationProgressHandler OnChainValidationProgress;

public delegate void OnChainValidationProgressHandler(object sender, PdfverifierChainValidationProgressEventArgs e);

public class PdfverifierChainValidationProgressEventArgs : EventArgs {
  public string EventKind { get; }
  public string CertRDN { get; }
  public string CACertRDN { get; }
  public int Action { get; set; }
}
Public Event OnChainValidationProgress As OnChainValidationProgressHandler

Public Delegate Sub OnChainValidationProgressHandler(sender As Object, e As PdfverifierChainValidationProgressEventArgs)

Public Class PdfverifierChainValidationProgressEventArgs Inherits EventArgs
  Public ReadOnly Property EventKind As String
  Public ReadOnly Property CertRDN As String
  Public ReadOnly Property CACertRDN As String
  Public Property Action As Integer
End Class

Remarks

Subscribe to this event to be notified about chain validation progress. Use the Action parameter to alter the validation flow.

The EventKind parameter reports the nature of the event being reported. The CertRDN and CACertRDN parameters report the distinguished names of the certificates that are relevant for the event invocation (one or both can be empty, depending on EventKind). Use the Action parameter to adjust the validation flow.

veaAuto0Handle the action automatically (the default behaviour)

veaContinue1Accept the request implied by the event (accept the certificate, allow the object retrieval)

veaReject2Reject the request implied by the event (reject the certificate, disallow the object retrieval)

veaAcceptNow3Accept the validated certificate immediately

veaAbortNow4Abort the validation, reject the certificate

DocumentLoaded Event (PDFVerifier Component)

This event is fired when the document has been loaded into memory.

Syntax

public event OnDocumentLoadedHandler OnDocumentLoaded;

public delegate void OnDocumentLoadedHandler(object sender, PdfverifierDocumentLoadedEventArgs e);

public class PdfverifierDocumentLoadedEventArgs : EventArgs {
  public bool Cancel { get; set; }
}
Public Event OnDocumentLoaded As OnDocumentLoadedHandler

Public Delegate Sub OnDocumentLoadedHandler(sender As Object, e As PdfverifierDocumentLoadedEventArgs)

Public Class PdfverifierDocumentLoadedEventArgs Inherits EventArgs
  Public Property Cancel As Boolean
End Class

Remarks

The handler for this event is a good place to check the document structure, which may be useful when preparing the signature. For example, you can use the Pages information to find the optimal position for the signature widget.

Set Cancel to true to terminate document processing on this stage.

Encrypted Event (PDFVerifier Component)

Notifies the application that the document is encrypted and provides recipient certificate details if asymmetric encryption was used to encrypt the document.

Syntax

public event OnEncryptedHandler OnEncrypted;

public delegate void OnEncryptedHandler(object sender, PdfverifierEncryptedEventArgs e);

public class PdfverifierEncryptedEventArgs : EventArgs {
  public bool CertUsed { get; }
  public string IssuerRDN { get; }
  public byte[] SerialNumber { get; }
  public byte[] SubjectKeyID { get; }
  public bool NeedCredential { get; }
  public bool SkipThis { get; set; }
}
Public Event OnEncrypted As OnEncryptedHandler

Public Delegate Sub OnEncryptedHandler(sender As Object, e As PdfverifierEncryptedEventArgs)

Public Class PdfverifierEncryptedEventArgs Inherits EventArgs
  Public ReadOnly Property CertUsed As Boolean
  Public ReadOnly Property IssuerRDN As String
  Public ReadOnly Property SerialNumber As Byte()
  Public ReadOnly Property SubjectKeyID As Byte()
  Public ReadOnly Property NeedCredential As Boolean
  Public Property SkipThis As Boolean
End Class

Remarks

The component fires this event when processing encrypted documents to report the fact of encryption and pass certificate parameters to the user.

This event fires repeatedly for each encryption mechanism used in the document until the user provides the correct credential via the DecryptionCertificate or Password property (depending on the encryption method used), or sets SkipThis to true.

The CertUsed parameter specifies the encryption method used. If set to true, it indicates that the document uses asymmetric (certificate-based) encryption. In that case, the IssuerRDN, SerialNumber, and SubjectKeyID parameters provide the details of the encryption certificate. Note that the document can be encrypted with more than one certificate (or have "more than one recipient"), in which case each certificate will invoke its own Encrypted event loop.

CertUsed set to false indicates that the document uses password encryption. In this case, provide the password via the Password property.

The NeedCredential parameter specifies whether the correct credential is already available to the component or still needs to be set. One example where NeedCredential would be set to false is where it had been provided by the application prior to processing the document (e.g. by setting the Password property to a known pre-defined value). If NeedCredential is set to true, you must provide the valid credential for the decryption process to succeed.

Error Event (PDFVerifier Component)

Information about errors during signing/validation.

Syntax

public event OnErrorHandler OnError;

public delegate void OnErrorHandler(object sender, PdfverifierErrorEventArgs e);

public class PdfverifierErrorEventArgs : EventArgs {
  public int ErrorCode { get; }
  public string Description { get; }
}
Public Event OnError As OnErrorHandler

Public Delegate Sub OnErrorHandler(sender As Object, e As PdfverifierErrorEventArgs)

Public Class PdfverifierErrorEventArgs Inherits EventArgs
  Public ReadOnly Property ErrorCode As Integer
  Public ReadOnly Property Description As String
End Class

Remarks

The event is fired in case of exceptional conditions during PDF processing.

ErrorCode contains an error code and Description contains a textual description of the error.

Notification Event (PDFVerifier Component)

This event notifies the application about an underlying control flow event.

Syntax

public event OnNotificationHandler OnNotification;

public delegate void OnNotificationHandler(object sender, PdfverifierNotificationEventArgs e);

public class PdfverifierNotificationEventArgs : EventArgs {
  public string EventID { get; }
  public string EventParam { get; }
}
Public Event OnNotification As OnNotificationHandler

Public Delegate Sub OnNotificationHandler(sender As Object, e As PdfverifierNotificationEventArgs)

Public Class PdfverifierNotificationEventArgs Inherits EventArgs
  Public ReadOnly Property EventID As String
  Public ReadOnly Property EventParam As String
End Class

Remarks

The component fires this event to let the application know about some event, occurrence, or milestone in the component. For example, it may fire to report completion of the document processing. The list of events being reported is not fixed, and may be flexibly extended over time.

The unique identifier of the event is provided in the EventID parameter. EventParam contains any parameters accompanying the occurrence. Depending on the type of the component, the exact action it is performing, or the document being processed, one or both may be omitted.

SignatureFound Event (PDFVerifier Component)

Signifies the start of signature validation.

Syntax

public event OnSignatureFoundHandler OnSignatureFound;

public delegate void OnSignatureFoundHandler(object sender, PdfverifierSignatureFoundEventArgs e);

public class PdfverifierSignatureFoundEventArgs : EventArgs {
  public int Index { get; }
  public string IssuerRDN { get; }
  public byte[] SerialNumber { get; }
  public byte[] SubjectKeyID { get; }
  public bool CertFound { get; }
  public bool ValidateSignature { get; set; }
  public bool ValidateChain { get; set; }
}
Public Event OnSignatureFound As OnSignatureFoundHandler

Public Delegate Sub OnSignatureFoundHandler(sender As Object, e As PdfverifierSignatureFoundEventArgs)

Public Class PdfverifierSignatureFoundEventArgs Inherits EventArgs
  Public ReadOnly Property Index As Integer
  Public ReadOnly Property IssuerRDN As String
  Public ReadOnly Property SerialNumber As Byte()
  Public ReadOnly Property SubjectKeyID As Byte()
  Public ReadOnly Property CertFound As Boolean
  Public Property ValidateSignature As Boolean
  Public Property ValidateChain As Boolean
End Class

Remarks

This event tells the application that signature validation is about to start, and provides the details about the signer's certificate via its IssuerRDN, SerialNumber, and SubjectKeyID parameters. It fires for every signature located in the verified document or message.

The CertFound parameter is set to True if the component has found the needed certificate in one of the known locations, and to False otherwise, in which case you must provide it manually via the KnownCertificates property.

Signature validation consists of two independent stages: cryptographic signature validation and chain validation. Separate validation results are reported for each, with the SignatureValidationResult and ChainValidationResult properties respectively.

Use the ValidateSignature and ValidateChain parameters to tell the verifier which stages to include in the validation.

SignatureValidated Event (PDFVerifier Component)

Marks the completion of the signature validation routine.

Syntax

public event OnSignatureValidatedHandler OnSignatureValidated;

public delegate void OnSignatureValidatedHandler(object sender, PdfverifierSignatureValidatedEventArgs e);

public class PdfverifierSignatureValidatedEventArgs : EventArgs {
  public int Index { get; }
  public string IssuerRDN { get; }
  public byte[] SerialNumber { get; }
  public byte[] SubjectKeyID { get; }
  public int ValidationResult { get; }
}
Public Event OnSignatureValidated As OnSignatureValidatedHandler

Public Delegate Sub OnSignatureValidatedHandler(sender As Object, e As PdfverifierSignatureValidatedEventArgs)

Public Class PdfverifierSignatureValidatedEventArgs Inherits EventArgs
  Public ReadOnly Property Index As Integer
  Public ReadOnly Property IssuerRDN As String
  Public ReadOnly Property SerialNumber As Byte()
  Public ReadOnly Property SubjectKeyID As Byte()
  Public ReadOnly Property ValidationResult As Integer
End Class

Remarks

This event is fired upon the completion of the signature validation routine, and reports the respective validation result.

Use the IssuerRDN, SerialNumber, and/or SubjectKeyID parameters to identify the signing certificate.

ValidationResult is set to 0 if the validation has been successful, or to a non-zero value in case of a validation failure.

svtValid0The signature is valid

svtUnknown1Signature validity is unknown

svtCorrupted2The signature is corrupted

svtSignerNotFound3Failed to acquire the signing certificate. The signature cannot be validated.

svtFailure4General failure

TimestampFound Event (PDFVerifier Component)

Signifies the start of a timestamp validation routine.

Syntax

public event OnTimestampFoundHandler OnTimestampFound;

public delegate void OnTimestampFoundHandler(object sender, PdfverifierTimestampFoundEventArgs e);

public class PdfverifierTimestampFoundEventArgs : EventArgs {
  public int Index { get; }
  public string IssuerRDN { get; }
  public byte[] SerialNumber { get; }
  public byte[] SubjectKeyID { get; }
  public bool CertFound { get; }
  public bool ValidateTimestamp { get; set; }
  public bool ValidateChain { get; set; }
}
Public Event OnTimestampFound As OnTimestampFoundHandler

Public Delegate Sub OnTimestampFoundHandler(sender As Object, e As PdfverifierTimestampFoundEventArgs)

Public Class PdfverifierTimestampFoundEventArgs Inherits EventArgs
  Public ReadOnly Property Index As Integer
  Public ReadOnly Property IssuerRDN As String
  Public ReadOnly Property SerialNumber As Byte()
  Public ReadOnly Property SubjectKeyID As Byte()
  Public ReadOnly Property CertFound As Boolean
  Public Property ValidateTimestamp As Boolean
  Public Property ValidateChain As Boolean
End Class

Remarks

This event fires for every timestamp identified during signature processing, and reports the details about the signer's certificate via its IssuerRDN, SerialNumber, and SubjectKeyID parameters.

The CertFound parameter is set to True if the component has found the needed certificate in one of the known locations, and to False otherwise, in which case you must provide it manually via the KnownCertificates property.

Just like with signature validation, timestamp validation consists of two independent stages: cryptographic signature validation and chain validation. Separate validation results are reported for each, with the ValidationResult and ChainValidationResult properties respectively.

Use the ValidateSignature and ValidateChain parameters to tell the verifier which stages to include in the validation.

TimestampValidated Event (PDFVerifier Component)

Reports the completion of the timestamp validation routine.

Syntax

public event OnTimestampValidatedHandler OnTimestampValidated;

public delegate void OnTimestampValidatedHandler(object sender, PdfverifierTimestampValidatedEventArgs e);

public class PdfverifierTimestampValidatedEventArgs : EventArgs {
  public int Index { get; }
  public string IssuerRDN { get; }
  public byte[] SerialNumber { get; }
  public byte[] SubjectKeyID { get; }
  public string Time { get; }
  public int ValidationResult { get; }
  public int ChainValidationResult { get; }
  public int ChainValidationDetails { get; }
}
Public Event OnTimestampValidated As OnTimestampValidatedHandler

Public Delegate Sub OnTimestampValidatedHandler(sender As Object, e As PdfverifierTimestampValidatedEventArgs)

Public Class PdfverifierTimestampValidatedEventArgs Inherits EventArgs
  Public ReadOnly Property Index As Integer
  Public ReadOnly Property IssuerRDN As String
  Public ReadOnly Property SerialNumber As Byte()
  Public ReadOnly Property SubjectKeyID As Byte()
  Public ReadOnly Property Time As String
  Public ReadOnly Property ValidationResult As Integer
  Public ReadOnly Property ChainValidationResult As Integer
  Public ReadOnly Property ChainValidationDetails As Integer
End Class

Remarks

This event is fired upon the completion of the timestamp validation routine, and reports the respective validation result.

ValidationResult is set to 0 if the validation has been successful, or to a non-zero value in case of a failure.

svtValid0The signature is valid

svtUnknown1Signature validity is unknown

svtCorrupted2The signature is corrupted

svtSignerNotFound3Failed to acquire the signing certificate. The signature cannot be validated.

svtFailure4General failure

TLSCertNeeded Event (PDFVerifier Component)

Fires when a remote TLS party requests a client certificate.

Syntax

public event OnTLSCertNeededHandler OnTLSCertNeeded;

public delegate void OnTLSCertNeededHandler(object sender, PdfverifierTLSCertNeededEventArgs e);

public class PdfverifierTLSCertNeededEventArgs : EventArgs {
  public string Host { get; }
  public string CANames { get; }
}
Public Event OnTLSCertNeeded As OnTLSCertNeededHandler

Public Delegate Sub OnTLSCertNeededHandler(sender As Object, e As PdfverifierTLSCertNeededEventArgs)

Public Class PdfverifierTLSCertNeededEventArgs Inherits EventArgs
  Public ReadOnly Property Host As String
  Public ReadOnly Property CANames As String
End Class

Remarks

This event fires to notify the implementation that a remote TLS server has requested a client certificate. The Host parameter identifies the host that makes a request, and the CANames parameter (optional, according to the TLS spec) advises on the accepted issuing CAs.

Use the TLSClientChain property in response to this event to provide the requested certificate. Please make sure the client certificate includes the associated private key. Note that you may set the certificates before the connection without waiting for this event to fire.

This event is preceded by the TLSHandshake event for the given host and, if the certificate was accepted, succeeded by the TLSEstablished event.

TLSCertValidate Event (PDFVerifier Component)

This event is fired upon receipt of the TLS server's certificate, allowing the user to control its acceptance.

Syntax

public event OnTLSCertValidateHandler OnTLSCertValidate;

public delegate void OnTLSCertValidateHandler(object sender, PdfverifierTLSCertValidateEventArgs e);

public class PdfverifierTLSCertValidateEventArgs : EventArgs {
  public string ServerHost { get; }
  public string ServerIP { get; }
  public bool Accept { get; set; }
}
Public Event OnTLSCertValidate As OnTLSCertValidateHandler

Public Delegate Sub OnTLSCertValidateHandler(sender As Object, e As PdfverifierTLSCertValidateEventArgs)

Public Class PdfverifierTLSCertValidateEventArgs Inherits EventArgs
  Public ReadOnly Property ServerHost As String
  Public ReadOnly Property ServerIP As String
  Public Property Accept As Boolean
End Class

Remarks

This event is fired during a TLS handshake. Use the TLSServerChain property to access the certificate chain. In general, components may contact a number of TLS endpoints during their work, depending on their configuration.

Accept is assigned in accordance with the outcome of the internal validation check performed by the component, and can be adjusted if needed.

TLSEstablished Event (PDFVerifier Component)

Fires when a TLS handshake with Host successfully completes.

Syntax

public event OnTLSEstablishedHandler OnTLSEstablished;

public delegate void OnTLSEstablishedHandler(object sender, PdfverifierTLSEstablishedEventArgs e);

public class PdfverifierTLSEstablishedEventArgs : EventArgs {
  public string Host { get; }
  public string Version { get; }
  public string Ciphersuite { get; }
  public byte[] ConnectionId { get; }
  public bool Abort { get; set; }
}
Public Event OnTLSEstablished As OnTLSEstablishedHandler

Public Delegate Sub OnTLSEstablishedHandler(sender As Object, e As PdfverifierTLSEstablishedEventArgs)

Public Class PdfverifierTLSEstablishedEventArgs Inherits EventArgs
  Public ReadOnly Property Host As String
  Public ReadOnly Property Version As String
  Public ReadOnly Property Ciphersuite As String
  Public ReadOnly Property ConnectionId As Byte()
  Public Property Abort As Boolean
End Class

Remarks

The component uses this event to notify the application about a successful completion of a TLS handshake.

The Version, Ciphersuite, and ConnectionId parameters indicate the security parameters of the new connection. Use the Abort parameter if you need to terminate the connection at this stage.

TLSHandshake Event (PDFVerifier Component)

Fires when a new TLS handshake is initiated, before the handshake commences.

Syntax

public event OnTLSHandshakeHandler OnTLSHandshake;

public delegate void OnTLSHandshakeHandler(object sender, PdfverifierTLSHandshakeEventArgs e);

public class PdfverifierTLSHandshakeEventArgs : EventArgs {
  public string Host { get; }
  public bool Abort { get; set; }
}
Public Event OnTLSHandshake As OnTLSHandshakeHandler

Public Delegate Sub OnTLSHandshakeHandler(sender As Object, e As PdfverifierTLSHandshakeEventArgs)

Public Class PdfverifierTLSHandshakeEventArgs Inherits EventArgs
  Public ReadOnly Property Host As String
  Public Property Abort As Boolean
End Class

Remarks

The component uses this event to notify the application about the start of a new TLS handshake to Host. If the handshake is successful, this event will be followed by the TLSEstablished event. If the server chooses to request a client certificate, the TLSCertNeeded event will also be fired.

TLSShutdown Event (PDFVerifier Component)

Reports the graceful closure of a TLS connection.

Syntax

public event OnTLSShutdownHandler OnTLSShutdown;

public delegate void OnTLSShutdownHandler(object sender, PdfverifierTLSShutdownEventArgs e);

public class PdfverifierTLSShutdownEventArgs : EventArgs {
  public string Host { get; }
}
Public Event OnTLSShutdown As OnTLSShutdownHandler

Public Delegate Sub OnTLSShutdownHandler(sender As Object, e As PdfverifierTLSShutdownEventArgs)

Public Class PdfverifierTLSShutdownEventArgs Inherits EventArgs
  Public ReadOnly Property Host As String
End Class

Remarks

This event notifies the application about the closure of an earlier established TLS connection. Note that only graceful connection closures are reported.

Certificate Type

Provides details of an individual X.509 certificate.

Remarks

This type provides access to X.509 certificate details.

Fields

Bytes
byte[] (read-only)

Default Value: ""

Returns the raw certificate data in DER format.

CA
bool

Default Value: False

Indicates whether the certificate has a CA capability (a setting in the BasicConstraints extension).

CAKeyID
byte[] (read-only)

Default Value: ""

A unique identifier (fingerprint) of the CA certificate's private key.

Authority Key Identifier is a (non-critical) X.509 certificate extension which allows the identification of certificates produced by the same issuer, but with different public keys.

CRLDistributionPoints
string

Default Value: ""

Locations of the CRL (Certificate Revocation List) distribution points used to check this certificate's validity.

Curve
string

Default Value: ""

Specifies the elliptic curve of the EC public key.

SB_EC_SECP112R1SECP112R1
SB_EC_SECP112R2SECP112R2
SB_EC_SECP128R1SECP128R1
SB_EC_SECP128R2SECP128R2
SB_EC_SECP160K1SECP160K1
SB_EC_SECP160R1SECP160R1
SB_EC_SECP160R2SECP160R2
SB_EC_SECP192K1SECP192K1
SB_EC_SECP192R1SECP192R1
SB_EC_SECP224K1SECP224K1
SB_EC_SECP224R1SECP224R1
SB_EC_SECP256K1SECP256K1
SB_EC_SECP256R1SECP256R1
SB_EC_SECP384R1SECP384R1
SB_EC_SECP521R1SECP521R1
SB_EC_SECT113R1SECT113R1
SB_EC_SECT113R2SECT113R2
SB_EC_SECT131R1SECT131R1
SB_EC_SECT131R2SECT131R2
SB_EC_SECT163K1SECT163K1
SB_EC_SECT163R1SECT163R1
SB_EC_SECT163R2SECT163R2
SB_EC_SECT193R1SECT193R1
SB_EC_SECT193R2SECT193R2
SB_EC_SECT233K1SECT233K1
SB_EC_SECT233R1SECT233R1
SB_EC_SECT239K1SECT239K1
SB_EC_SECT283K1SECT283K1
SB_EC_SECT283R1SECT283R1
SB_EC_SECT409K1SECT409K1
SB_EC_SECT409R1SECT409R1
SB_EC_SECT571K1SECT571K1
SB_EC_SECT571R1SECT571R1
SB_EC_PRIME192V1PRIME192V1
SB_EC_PRIME192V2PRIME192V2
SB_EC_PRIME192V3PRIME192V3
SB_EC_PRIME239V1PRIME239V1
SB_EC_PRIME239V2PRIME239V2
SB_EC_PRIME239V3PRIME239V3
SB_EC_PRIME256V1PRIME256V1
SB_EC_C2PNB163V1C2PNB163V1
SB_EC_C2PNB163V2C2PNB163V2
SB_EC_C2PNB163V3C2PNB163V3
SB_EC_C2PNB176W1C2PNB176W1
SB_EC_C2TNB191V1C2TNB191V1
SB_EC_C2TNB191V2C2TNB191V2
SB_EC_C2TNB191V3C2TNB191V3
SB_EC_C2ONB191V4C2ONB191V4
SB_EC_C2ONB191V5C2ONB191V5
SB_EC_C2PNB208W1C2PNB208W1
SB_EC_C2TNB239V1C2TNB239V1
SB_EC_C2TNB239V2C2TNB239V2
SB_EC_C2TNB239V3C2TNB239V3
SB_EC_C2ONB239V4C2ONB239V4
SB_EC_C2ONB239V5C2ONB239V5
SB_EC_C2PNB272W1C2PNB272W1
SB_EC_C2PNB304W1C2PNB304W1
SB_EC_C2TNB359V1C2TNB359V1
SB_EC_C2PNB368W1C2PNB368W1
SB_EC_C2TNB431R1C2TNB431R1
SB_EC_NISTP192NISTP192
SB_EC_NISTP224NISTP224
SB_EC_NISTP256NISTP256
SB_EC_NISTP384NISTP384
SB_EC_NISTP521NISTP521
SB_EC_NISTB163NISTB163
SB_EC_NISTB233NISTB233
SB_EC_NISTB283NISTB283
SB_EC_NISTB409NISTB409
SB_EC_NISTB571NISTB571
SB_EC_NISTK163NISTK163
SB_EC_NISTK233NISTK233
SB_EC_NISTK283NISTK283
SB_EC_NISTK409NISTK409
SB_EC_NISTK571NISTK571
SB_EC_GOSTCPTESTGOSTCPTEST
SB_EC_GOSTCPAGOSTCPA
SB_EC_GOSTCPBGOSTCPB
SB_EC_GOSTCPCGOSTCPC
SB_EC_GOSTCPXCHAGOSTCPXCHA
SB_EC_GOSTCPXCHBGOSTCPXCHB
SB_EC_BRAINPOOLP160R1BRAINPOOLP160R1
SB_EC_BRAINPOOLP160T1BRAINPOOLP160T1
SB_EC_BRAINPOOLP192R1BRAINPOOLP192R1
SB_EC_BRAINPOOLP192T1BRAINPOOLP192T1
SB_EC_BRAINPOOLP224R1BRAINPOOLP224R1
SB_EC_BRAINPOOLP224T1BRAINPOOLP224T1
SB_EC_BRAINPOOLP256R1BRAINPOOLP256R1
SB_EC_BRAINPOOLP256T1BRAINPOOLP256T1
SB_EC_BRAINPOOLP320R1BRAINPOOLP320R1
SB_EC_BRAINPOOLP320T1BRAINPOOLP320T1
SB_EC_BRAINPOOLP384R1BRAINPOOLP384R1
SB_EC_BRAINPOOLP384T1BRAINPOOLP384T1
SB_EC_BRAINPOOLP512R1BRAINPOOLP512R1
SB_EC_BRAINPOOLP512T1BRAINPOOLP512T1
SB_EC_CURVE25519CURVE25519
SB_EC_CURVE448CURVE448

Fingerprint
byte[] (read-only)

Default Value: ""

Contains the fingerprint (a hash imprint) of this certificate.

FriendlyName
string (read-only)

Default Value: ""

Contains an associated alias (friendly name) of the certificate.

HashAlgorithm
string

Default Value: ""

Specifies the hash algorithm to be used in the operations on the certificate (such as key signing)

SB_HASH_ALGORITHM_SHA1SHA1
SB_HASH_ALGORITHM_SHA224SHA224
SB_HASH_ALGORITHM_SHA256SHA256
SB_HASH_ALGORITHM_SHA384SHA384
SB_HASH_ALGORITHM_SHA512SHA512
SB_HASH_ALGORITHM_MD2MD2
SB_HASH_ALGORITHM_MD4MD4
SB_HASH_ALGORITHM_MD5MD5
SB_HASH_ALGORITHM_RIPEMD160RIPEMD160
SB_HASH_ALGORITHM_CRC32CRC32
SB_HASH_ALGORITHM_SSL3SSL3
SB_HASH_ALGORITHM_GOST_R3411_1994GOST1994
SB_HASH_ALGORITHM_WHIRLPOOLWHIRLPOOL
SB_HASH_ALGORITHM_POLY1305POLY1305
SB_HASH_ALGORITHM_SHA3_224SHA3_224
SB_HASH_ALGORITHM_SHA3_256SHA3_256
SB_HASH_ALGORITHM_SHA3_384SHA3_384
SB_HASH_ALGORITHM_SHA3_512SHA3_512
SB_HASH_ALGORITHM_BLAKE2S_128BLAKE2S_128
SB_HASH_ALGORITHM_BLAKE2S_160BLAKE2S_160
SB_HASH_ALGORITHM_BLAKE2S_224BLAKE2S_224
SB_HASH_ALGORITHM_BLAKE2S_256BLAKE2S_256
SB_HASH_ALGORITHM_BLAKE2B_160BLAKE2B_160
SB_HASH_ALGORITHM_BLAKE2B_256BLAKE2B_256
SB_HASH_ALGORITHM_BLAKE2B_384BLAKE2B_384
SB_HASH_ALGORITHM_BLAKE2B_512BLAKE2B_512
SB_HASH_ALGORITHM_SHAKE_128SHAKE_128
SB_HASH_ALGORITHM_SHAKE_256SHAKE_256
SB_HASH_ALGORITHM_SHAKE_128_LENSHAKE_128_LEN
SB_HASH_ALGORITHM_SHAKE_256_LENSHAKE_256_LEN

Issuer
string (read-only)

Default Value: ""

The common name of the certificate issuer (CA), typically a company name.

IssuerRDN
string

Default Value: ""

A collection of information, in the form of [OID, Value] pairs, uniquely identifying the certificate issuer.

KeyAlgorithm
string

Default Value: "0"

Specifies the public key algorithm of this certificate.

SB_CERT_ALGORITHM_ID_RSA_ENCRYPTIONrsaEncryption
SB_CERT_ALGORITHM_MD2_RSA_ENCRYPTIONmd2withRSAEncryption
SB_CERT_ALGORITHM_MD5_RSA_ENCRYPTIONmd5withRSAEncryption
SB_CERT_ALGORITHM_SHA1_RSA_ENCRYPTIONsha1withRSAEncryption
SB_CERT_ALGORITHM_ID_DSAid-dsa
SB_CERT_ALGORITHM_ID_DSA_SHA1id-dsa-with-sha1
SB_CERT_ALGORITHM_DH_PUBLICdhpublicnumber
SB_CERT_ALGORITHM_SHA224_RSA_ENCRYPTIONsha224WithRSAEncryption
SB_CERT_ALGORITHM_SHA256_RSA_ENCRYPTIONsha256WithRSAEncryption
SB_CERT_ALGORITHM_SHA384_RSA_ENCRYPTIONsha384WithRSAEncryption
SB_CERT_ALGORITHM_SHA512_RSA_ENCRYPTIONsha512WithRSAEncryption
SB_CERT_ALGORITHM_ID_RSAPSSid-RSASSA-PSS
SB_CERT_ALGORITHM_ID_RSAOAEPid-RSAES-OAEP
SB_CERT_ALGORITHM_RSASIGNATURE_RIPEMD160ripemd160withRSA
SB_CERT_ALGORITHM_ID_ELGAMALelGamal
SB_CERT_ALGORITHM_SHA1_ECDSAecdsa-with-SHA1
SB_CERT_ALGORITHM_RECOMMENDED_ECDSAecdsa-recommended
SB_CERT_ALGORITHM_SHA224_ECDSAecdsa-with-SHA224
SB_CERT_ALGORITHM_SHA256_ECDSAecdsa-with-SHA256
SB_CERT_ALGORITHM_SHA384_ECDSAecdsa-with-SHA384
SB_CERT_ALGORITHM_SHA512_ECDSAecdsa-with-SHA512
SB_CERT_ALGORITHM_ECid-ecPublicKey
SB_CERT_ALGORITHM_SPECIFIED_ECDSAecdsa-specified
SB_CERT_ALGORITHM_GOST_R3410_1994id-GostR3410-94
SB_CERT_ALGORITHM_GOST_R3410_2001id-GostR3410-2001
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_1994id-GostR3411-94-with-GostR3410-94
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_2001id-GostR3411-94-with-GostR3410-2001
SB_CERT_ALGORITHM_SHA1_ECDSA_PLAINecdsa-plain-SHA1
SB_CERT_ALGORITHM_SHA224_ECDSA_PLAINecdsa-plain-SHA224
SB_CERT_ALGORITHM_SHA256_ECDSA_PLAINecdsa-plain-SHA256
SB_CERT_ALGORITHM_SHA384_ECDSA_PLAINecdsa-plain-SHA384
SB_CERT_ALGORITHM_SHA512_ECDSA_PLAINecdsa-plain-SHA512
SB_CERT_ALGORITHM_RIPEMD160_ECDSA_PLAINecdsa-plain-RIPEMD160
SB_CERT_ALGORITHM_WHIRLPOOL_RSA_ENCRYPTIONwhirlpoolWithRSAEncryption
SB_CERT_ALGORITHM_ID_DSA_SHA224id-dsa-with-sha224
SB_CERT_ALGORITHM_ID_DSA_SHA256id-dsa-with-sha256
SB_CERT_ALGORITHM_SHA3_224_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-224
SB_CERT_ALGORITHM_SHA3_256_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-256
SB_CERT_ALGORITHM_SHA3_384_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-384
SB_CERT_ALGORITHM_SHA3_512_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-sha3-512
SB_CERT_ALGORITHM_SHA3_224_ECDSAid-ecdsa-with-sha3-224
SB_CERT_ALGORITHM_SHA3_256_ECDSAid-ecdsa-with-sha3-256
SB_CERT_ALGORITHM_SHA3_384_ECDSAid-ecdsa-with-sha3-384
SB_CERT_ALGORITHM_SHA3_512_ECDSAid-ecdsa-with-sha3-512
SB_CERT_ALGORITHM_SHA3_224_ECDSA_PLAINid-ecdsa-plain-with-sha3-224
SB_CERT_ALGORITHM_SHA3_256_ECDSA_PLAINid-ecdsa-plain-with-sha3-256
SB_CERT_ALGORITHM_SHA3_384_ECDSA_PLAINid-ecdsa-plain-with-sha3-384
SB_CERT_ALGORITHM_SHA3_512_ECDSA_PLAINid-ecdsa-plain-with-sha3-512
SB_CERT_ALGORITHM_ID_DSA_SHA3_224id-dsa-with-sha3-224
SB_CERT_ALGORITHM_ID_DSA_SHA3_256id-dsa-with-sha3-256
SB_CERT_ALGORITHM_BLAKE2S_128_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s128
SB_CERT_ALGORITHM_BLAKE2S_160_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s160
SB_CERT_ALGORITHM_BLAKE2S_224_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s224
SB_CERT_ALGORITHM_BLAKE2S_256_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2s256
SB_CERT_ALGORITHM_BLAKE2B_160_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b160
SB_CERT_ALGORITHM_BLAKE2B_256_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b256
SB_CERT_ALGORITHM_BLAKE2B_384_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b384
SB_CERT_ALGORITHM_BLAKE2B_512_RSA_ENCRYPTIONid-rsassa-pkcs1-v1_5-with-blake2b512
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSAid-ecdsa-with-blake2s128
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSAid-ecdsa-with-blake2s160
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSAid-ecdsa-with-blake2s224
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSAid-ecdsa-with-blake2s256
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSAid-ecdsa-with-blake2b160
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSAid-ecdsa-with-blake2b256
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSAid-ecdsa-with-blake2b384
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSAid-ecdsa-with-blake2b512
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSA_PLAINid-ecdsa-plain-with-blake2s128
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSA_PLAINid-ecdsa-plain-with-blake2s160
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSA_PLAINid-ecdsa-plain-with-blake2s224
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSA_PLAINid-ecdsa-plain-with-blake2s256
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSA_PLAINid-ecdsa-plain-with-blake2b160
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSA_PLAINid-ecdsa-plain-with-blake2b256
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSA_PLAINid-ecdsa-plain-with-blake2b384
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSA_PLAINid-ecdsa-plain-with-blake2b512
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_224id-dsa-with-blake2s224
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_256id-dsa-with-blake2s256
SB_CERT_ALGORITHM_EDDSA_ED25519id-Ed25519
SB_CERT_ALGORITHM_EDDSA_ED448id-Ed448
SB_CERT_ALGORITHM_EDDSA_ED25519_PHid-Ed25519ph
SB_CERT_ALGORITHM_EDDSA_ED448_PHid-Ed448ph
SB_CERT_ALGORITHM_EDDSAid-EdDSA
SB_CERT_ALGORITHM_EDDSA_SIGNATUREid-EdDSA-sig

KeyBits
int (read-only)

Default Value: 0

Returns the length of the public key.

KeyFingerprint
byte[] (read-only)

Default Value: ""

Returns a fingerprint of the public key contained in the certificate.

KeyUsage
int

Default Value: 0

Indicates the purposes of the key contained in the certificate, in the form of an OR'ed flag set.

This value is a bit mask of the following values:

ckuUnknown0x00000Unknown key usage

ckuDigitalSignature0x00001Digital signature

ckuNonRepudiation0x00002Non-repudiation

ckuKeyEncipherment0x00004Key encipherment

ckuDataEncipherment0x00008Data encipherment

ckuKeyAgreement0x00010Key agreement

ckuKeyCertSign0x00020Certificate signing

ckuCRLSign0x00040Revocation signing

ckuEncipherOnly0x00080Encipher only

ckuDecipherOnly0x00100Decipher only

ckuServerAuthentication0x00200Server authentication

ckuClientAuthentication0x00400Client authentication

ckuCodeSigning0x00800Code signing

ckuEmailProtection0x01000Email protection

ckuTimeStamping0x02000Timestamping

ckuOCSPSigning0x04000OCSP signing

ckuSmartCardLogon0x08000Smartcard logon

ckuKeyPurposeClientAuth0x10000Kerberos - client authentication

ckuKeyPurposeKDC0x20000Kerberos - KDC

KeyValid
bool (read-only)

Default Value: False

Returns True if the certificate's key is cryptographically valid, and False otherwise.

OCSPLocations
string

Default Value: ""

Locations of OCSP (Online Certificate Status Protocol) services that can be used to check this certificate's validity, as recorded by the CA.

OCSPNoCheck
bool

Default Value: False

Accessor to the value of the certificate's ocsp-no-check extension.

Origin
int (read-only)

Default Value: 0

Returns the origin of this certificate.

PolicyIDs
string

Default Value: ""

Contains identifiers (OIDs) of the applicable certificate policies.

The Certificate Policies extension identifies a sequence of policies under which the certificate has been issued, and which regulate its usage.

PrivateKeyBytes
byte[] (read-only)

Default Value: ""

Contains the certificate's private key. It is normal for this property to be empty if the private key is non-exportable.

PrivateKeyExists
bool (read-only)

Default Value: False

Indicates whether the certificate has an associated private key.

PrivateKeyExtractable
bool (read-only)

Default Value: False

Indicates whether the private key is extractable.

PublicKeyBytes
byte[] (read-only)

Default Value: ""

Contains the certificate's public key in DER format.

QualifiedStatements
QualifiedStatementsTypes

Default Value: 0

Returns the qualified status of the certificate.

SelfSigned
bool (read-only)

Default Value: False

Indicates whether the certificate is self-signed (root) or signed by an external CA.

SerialNumber
byte[]

Default Value: ""

Returns the certificate's serial number.

SigAlgorithm
string (read-only)

Default Value: ""

Indicates the algorithm that was used by the CA to sign this certificate.

Subject
string (read-only)

Default Value: ""

The common name of the certificate holder, typically an individual's name, a URL, an e-mail address, or a company name.

SubjectAlternativeName
string

Default Value: ""

Returns or sets the value of the Subject Alternative Name extension of the certificate.

SubjectKeyID
byte[]

Default Value: ""

Contains a unique identifier (fingerprint) of the certificate's private key.

Subject Key Identifier is a (non-critical) X.509 certificate extension which allows the identification of certificates containing a particular public key. In SecureBlackbox, the unique identifier is represented with a SHA1 hash of the bit string of the subject public key.

SubjectRDN
string

Default Value: ""

A collection of information, in the form of [OID, Value] pairs, uniquely identifying the certificate holder (subject).

ValidFrom
string

Default Value: ""

The time point at which the certificate becomes valid, in UTC.

ValidTo
string

Default Value: ""

The time point at which the certificate expires, in UTC.

Constructors

public Certificate(byte[] bytes, int startIndex, int count, string password);
Public Certificate(ByVal Bytes As Byte(), ByVal StartIndex As Integer, ByVal Count As Integer, ByVal Password As String)

Loads the X.509 certificate from a memory buffer. Bytes is a buffer containing the raw certificate data. StartIndex and Count specify the starting position and number of bytes to be read from the buffer, respectively. Password is a password encrypting the certificate.

public Certificate(byte[] certBytes, int certStartIndex, int certCount, byte[] keyBytes, int keyStartIndex, int keyCount, string password);
Public Certificate(ByVal CertBytes As Byte(), ByVal CertStartIndex As Integer, ByVal CertCount As Integer, ByVal KeyBytes As Byte(), ByVal KeyStartIndex As Integer, ByVal KeyCount As Integer, ByVal Password As String)

Loads the X.509 certificate from a memory buffer. CertBytes is a buffer containing the raw certificate data. CertStartIndex and CertCount specify the number of bytes to be read from the buffer, respectively. KeyBytes is a buffer containing the private key data. KeyStartIndex and KeyCount specify the starting position and number of bytes to be read from the buffer, respectively. Password is a password encrypting the certificate.

public Certificate(byte[] bytes, int startIndex, int count);
Public Certificate(ByVal Bytes As Byte(), ByVal StartIndex As Integer, ByVal Count As Integer)

Loads the X.509 certificate from a memory buffer. Bytes is a buffer containing the raw certificate data. StartIndex and Count specify the starting position and number of bytes to be read from the buffer, respectively.

public Certificate(string path, string password);
Public Certificate(ByVal Path As String, ByVal Password As String)

Loads the X.509 certificate from a file. Path specifies the full path to the file containing the certificate data. Password is a password encrypting the certificate.

public Certificate(string certPath, string keyPath, string password);
Public Certificate(ByVal CertPath As String, ByVal KeyPath As String, ByVal Password As String)

Loads the X.509 certificate from a file. CertPath specifies the full path to the file containing the certificate data. KeyPath specifies the full path to the file containing the private key. Password is a password encrypting the certificate.

public Certificate(string path);
Public Certificate(ByVal Path As String)

Loads the X.509 certificate from a file. Path specifies the full path to the file containing the certificate data.

Public Certificate(ByVal Stream As System.IO.Stream)

Loads the X.509 certificate from a stream. Stream is a stream containing the certificate data.

public Certificate(System.IO.Stream stream, string password);
Public Certificate(ByVal Stream As System.IO.Stream, ByVal Password As String)

Loads the X.509 certificate from a stream. Stream is a stream containing the certificate data. Password is a password encrypting the certificate.

public Certificate(System.IO.Stream certStream, System.IO.Stream keyStream, string password);
Public Certificate(ByVal CertStream As System.IO.Stream, ByVal KeyStream As System.IO.Stream, ByVal Password As String)

Loads the X.509 certificate from a stream. CertStream is a stream containing the certificate data. KeyStream is a stream containing the private key. Password is a password encrypting the certificate.

public Certificate();
Public Certificate()

Creates a new object with default field values.

CRL Type

Represents a Certificate Revocation List.

Remarks

CRLs store information about revoked certificates, i.e., certificates that have been identified as invalid by their issuing certificate authority (CA) for any number of reasons.

Each CRL object lists certificates from a single CA and identifies them by their serial numbers. A CA may or may not publish a CRL, may publish several CRLs, or may publish the same CRL in multiple locations.

Unlike OCSP responses, CRLs only list certificates that have been revoked. They do not list certificates that are still valid.

Fields

Bytes
byte[] (read-only)

Default Value: ""

Returns the raw CRL data in DER format.

CAKeyID
byte[]

Default Value: ""

A unique identifier (fingerprint) of the CA certificate's private key, if present in the CRL.

EntryCount
int (read-only)

Default Value: 0

Returns the number of certificate status entries in the CRL.

Issuer
string (read-only)

Default Value: ""

The common name of the CRL issuer (CA), typically a company name.

IssuerRDN
string (read-only)

Default Value: ""

A collection of information, in the form of [OID, Value] pairs, uniquely identifying the CRL issuer.

Location
string (read-only)

Default Value: ""

The URL that the CRL was downloaded from.

NextUpdate
string (read-only)

Default Value: ""

The planned time and date of the next version of this CRL to be published.

SigAlgorithm
string (read-only)

Default Value: "0"

The public key algorithm that was used by the CA to sign this CRL.

TBS
byte[] (read-only)

Default Value: ""

The to-be-signed part of the CRL (the CRL without the signature part).

ThisUpdate
string (read-only)

Default Value: ""

The date and time at which this version of the CRL was published.

Constructors

public CRL(byte[] bytes, int startIndex, int count);
Public CRL(ByVal Bytes As Byte(), ByVal StartIndex As Integer, ByVal Count As Integer)

Creates a CRL object from a memory buffer. Bytes is a buffer containing raw (DER) CRL data, StartIndex and Count specify the starting position and the length of the CRL data in the buffer, respectively.

public CRL(string location);
Public CRL(ByVal Location As String)

Creates a CRL object by downloading it from a remote location.

public CRL(System.IO.Stream stream);
Public CRL(ByVal Stream As System.IO.Stream)

Creates a CRL object from data contained in a stream.

public CRL();
Public CRL()

Creates an empty CRL object.

MailAttachment Type

Represents an attachment to an e-mail message.

Remarks

This object is a container for message attachments.

Fields

ContentSubtype
string

Default Value: ""

Contains the content subtype of the attachment.

ContentType
string

Default Value: ""

Contains the content type of the attachment.

CreationDate
string

Default Value: ""

The creation date.

Data
byte[]

Default Value: ""

The content of the attachment.

Description
string

Default Value: ""

Textual description of the attachment.

This property maps to the Content-Description e-mail header field. Although the field is optional, the ability to associate descriptive information with a given body is often desirable. One example is specifying the title of an image using this property.

Filename
string

Default Value: ""

Specifies the name of the attachment file.

ID
string

Default Value: ""

Contains the attachment's unique identifier.

ModificationDate
string

Default Value: ""

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

ReadDate
string

Default Value: ""

Specifies the file's last read date.

Size
long

Default Value: 0

The attachment's size in bytes.

Constructors

public MailAttachment(string contentType);
Public MailAttachment(ByVal ContentType As String)

Creates an empty mail attachment object.

OCSPResponse Type

Represents a single OCSP response originating from an OCSP responder.

Remarks

OCSP is a protocol that allows verification of certificate status in real-time, and is an alternative to Certificate Revocation Lists (CRLs).

An OCSP response is a snapshot of the certificate status at a given time.

Fields

Bytes
byte[] (read-only)

Default Value: ""

A buffer containing the raw OCSP response data.

EntryCount
int (read-only)

Default Value: 0

The number of SingleResponse elements contained in this OCSP response. Each SingleResponse element corresponds to a certificate status.

Issuer
string (read-only)

Default Value: ""

Indicates the issuer of this response (a CA or its authorized representative).

IssuerRDN
string (read-only)

Default Value: ""

Indicates the RDN of the issuer of this response (a CA or its authorized representative).

Location
string (read-only)

Default Value: ""

The location of the OCSP responder.

ProducedAt
string (read-only)

Default Value: ""

Specifies the time when the response was produced, in UTC.

Constructors

public OCSPResponse(byte[] bytes, int startIndex, int count);
Public OCSPResponse(ByVal Bytes As Byte(), ByVal StartIndex As Integer, ByVal Count As Integer)

Initializes the response from a memory buffer. Bytes is a buffer containing raw OCSP response data, StartIndex and Count specify the starting position and the number of bytes to be read from this buffer.

public OCSPResponse(string location);
Public OCSPResponse(ByVal Location As String)

Downloads an OCSP response from a remote location.

Public OCSPResponse(ByVal Stream As System.IO.Stream)

Initializes the response with the data from a stream.

public OCSPResponse();
Public OCSPResponse()

Creates an empty OCSP response object.

PDFDocumentInfo Type

Contains document security information.

Remarks

This type provides an overview of the document security parameters, including the encryption method (if used) and signature count. This information is available early into the signing/validation process and lets you prepare for the subsequent signature validation.

Fields

EncryptionAlgorithm
string (read-only)

Default Value: ""

The symmetric algorithm used to encrypt the document.

This property contains the encryption algorithm that was used to encrypt the PDF document.

Supported values:

SB_SYMMETRIC_ALGORITHM_RC4RC4
SB_SYMMETRIC_ALGORITHM_AES128AES128
SB_SYMMETRIC_ALGORITHM_AES256AES256

EncryptionType
PDFEncryptionTypes (read-only)

Default Value: 1

The document encryption type.

This property indicates the kind of encryption that was used to encrypt the PDF document.

Supported values:

petPassword1The document is encrypted with a password.
petCertificate2The document is encrypted with a certificate (or many certificates).

MetadataEncrypted
bool (read-only)

Default Value: True

Indicates if the document metadata is encrypted.

Use this property to check if the document metadata is encrypted.

Metadata contains additional information about the document such as its name and author.

Permissions
int (read-only)

Default Value: 0

Contains the document permissions associated with the encryption.

Use this property to check the permissions protected by this encryption. The PDF specification expects applications to comply with these permissions when handling encrypted documents. Contains a bit mask of the following flags:

pepAnnotations0x0001Annotating is allowed

pepAssemble0x0002Assembling a new document on the basis of the processed one is allowed

pepExtract0x0004Extraction/copying of the pictures and text from the document is allowed

pepExtractAcc0x0008Content extraction is allowed for accessibility purposes only

pepFillInForms0x0010Filling forms in is allowed

pepHighQualityPrint0x0020High quality printing is allowed

pepLowQualityPrint0x0040Low quality printing is allowed

pepModify0x0080Modifications are allowed

Constructors

public PDFDocumentInfo();
Public PDFDocumentInfo()

Initializes an instance of PDFDocumentInfo class.

PDFPage Type

This component is a container for PDF page details.

Remarks

Use this object to read general information about a document page, such as its dimensions and content positioning details.

Fields

CropLLX
int (read-only)

Default Value: 0

Specifies the lower-left X coordinate of the page crop area.

Specifies the lower-left X coordinate of the page crop area rectangle.

CropLLY
int (read-only)

Default Value: 0

Specifies the lower-left Y coordinate of the page crop area.

Specifies the lower-left Y coordinate of the page crop area rectangle.

CropURX
int (read-only)

Default Value: 0

Specifies the upper-right X coordinate of the page crop area.

Specifies the upper-right X coordinate of the page crop area rectangle.

CropURY
int (read-only)

Default Value: 0

Specifies the upper-right Y coordinate of the page crop area.

Specifies the upper-right Y coordinate of the page crop area rectangle.

Height
int (read-only)

Default Value: 0

Specifies the height of the page.

Returns the height of the page.

MediaLLX
int (read-only)

Default Value: 0

Specifies the lower-left X coordinate of the page media area.

Specifies the lower-left X coordinate of the page media area rectangle.

MediaLLY
int (read-only)

Default Value: 0

Specifies the lower-left Y coordinate of the page media area.

Specifies the lower-left Y coordinate of the page media area rectangle.

MediaURX
int (read-only)

Default Value: 0

Specifies the upper-right X coordinate of the page media area.

Specifies the upper-right X coordinate of the page media area rectangle.

MediaURY
int (read-only)

Default Value: 0

Specifies the upper-right Y coordinate of the page media area.

Specifies the upper-right Y coordinate of the page media area rectangle.

Rotate
int (read-only)

Default Value: 0

Specifies the rotation angle of the page in degrees. Values of 0, 90, 180, and 270 are allowed.

Width
int (read-only)

Default Value: 0

Specifies the width of the page.

Returns the width of the page.

Constructors

public PDFPage();
Public PDFPage()

Creates a new PDF page object.

PDFSignature Type

This component is a container for PDF signature details.

Remarks

Use it to tune up signature properties and widget appearance when creating a signature, or to read the signature information when processing it.

Fields

AllowedChanges
PDFSignatureAllowedChanges

Default Value: 0

The changes to the document allowed by the signature.

This field is only applicable to MDP/certification signatures and has no effect for any other kinds of signatures (regular or document timestamps).

psacNone0No changes are allowed by the signature
psacFillInForms1Only form fill-in is allowed
psacComment2Commenting is allowed
psacAll3Form fill-in and commenting are allowed

AuthorName
string

Default Value: ""

A human-readable signer name. This is a PDF document property.

CertificateIndex
int (read-only)

Default Value: -1

Returns the index of the signing certificate in the Certificates collection

Use this property to look up the signing certificate in the Certificates collection.

Certification
bool

Default Value: False

Specifies whether this is a Certification (MDP) signature.

Certification signatures are a feature used by earlier Acrobat versions. They have little use these days.

ChainValidationDetails
int (read-only)

Default Value: 0

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

Returns a bit mask of the following options:

cvrBadData0x0001One or more certificates in the validation path are malformed

cvrRevoked0x0002One or more certificates are revoked

cvrNotYetValid0x0004One or more certificates are not yet valid

cvrExpired0x0008One or more certificates are expired

cvrInvalidSignature0x0010A certificate contains a non-valid digital signature

cvrUnknownCA0x0020A CA certificate for one or more certificates has not been found (chain incomplete)

cvrCAUnauthorized0x0040One of the CA certificates are not authorized to act as CA

cvrCRLNotVerified0x0080One or more CRLs could not be verified

cvrOCSPNotVerified0x0100One or more OCSP responses could not be verified

cvrIdentityMismatch0x0200The identity protected by the certificate (a TLS endpoint or an e-mail addressee) does not match what is recorded in the certificate

cvrNoKeyUsage0x0400A mandatory key usage is not enabled in one of the chain certificates

cvrBlocked0x0800One or more certificates are blocked

cvrFailure0x1000General validation failure

cvrChainLoop0x2000Chain loop: one of the CA certificates recursively signs itself

cvrWeakAlgorithm0x4000A weak algorithm is used in one of certificates or revocation elements

cvrUserEnforced0x8000The chain was considered invalid following intervention from a user code

ChainValidationResult
ChainValidities (read-only)

Default Value: 0

The outcome of a certificate chain validation routine.

Available options:

cvtValid0The chain is valid

cvtValidButUntrusted1The chain is valid, but the root certificate is not trusted

cvtInvalid2The chain is not valid (some of certificates are revoked, expired, or contain an invalid signature)

cvtCantBeEstablished3The validity of the chain cannot be established because of missing or unavailable validation information (certificates, CRLs, or OCSP responses)

Use the ValidationLog property to access the detailed validation log.

ClaimedSigningTime
string

Default Value: ""

Returns or sets the signature's creation time.

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

The time is provided in UTC.

ContactInfo
string

Default Value: ""

Contains the signer's contact information. This is a PDF document property.

CoverageEndsAt
int (read-only)

Default Value: 0

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

PDF generators often use incremental updates to make changes in the 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. Alternatively, use the GetSignedVersion method of the PDFVerifier component to extract the exact revision that was signed.

CustomData
byte[]

Default Value: ""

Uninterpreted custom data to save with the signature.

EmptyField
bool

Default Value: False

Indicates whether or not the signature created/read is an empty field (a signature placeholder).

FilterName
string

Default Value: ""

The signature filter name.

FullSignatureName
string (read-only)

Default Value: ""

Specifies the full name of the signature field.

This is an internal identifier of a signature (such as Signature1) and is not meant to be human-readable.

HashAlgorithm
string

Default Value: "SHA256"

Specifies the hash algorithm to be used for signing.

SB_HASH_ALGORITHM_SHA1SHA1
SB_HASH_ALGORITHM_SHA224SHA224
SB_HASH_ALGORITHM_SHA256SHA256
SB_HASH_ALGORITHM_SHA384SHA384
SB_HASH_ALGORITHM_SHA512SHA512
SB_HASH_ALGORITHM_MD2MD2
SB_HASH_ALGORITHM_MD4MD4
SB_HASH_ALGORITHM_MD5MD5
SB_HASH_ALGORITHM_RIPEMD160RIPEMD160
SB_HASH_ALGORITHM_CRC32CRC32
SB_HASH_ALGORITHM_SSL3SSL3
SB_HASH_ALGORITHM_GOST_R3411_1994GOST1994
SB_HASH_ALGORITHM_WHIRLPOOLWHIRLPOOL
SB_HASH_ALGORITHM_POLY1305POLY1305
SB_HASH_ALGORITHM_SHA3_224SHA3_224
SB_HASH_ALGORITHM_SHA3_256SHA3_256
SB_HASH_ALGORITHM_SHA3_384SHA3_384
SB_HASH_ALGORITHM_SHA3_512SHA3_512
SB_HASH_ALGORITHM_BLAKE2S_128BLAKE2S_128
SB_HASH_ALGORITHM_BLAKE2S_160BLAKE2S_160
SB_HASH_ALGORITHM_BLAKE2S_224BLAKE2S_224
SB_HASH_ALGORITHM_BLAKE2S_256BLAKE2S_256
SB_HASH_ALGORITHM_BLAKE2B_160BLAKE2B_160
SB_HASH_ALGORITHM_BLAKE2B_256BLAKE2B_256
SB_HASH_ALGORITHM_BLAKE2B_384BLAKE2B_384
SB_HASH_ALGORITHM_BLAKE2B_512BLAKE2B_512
SB_HASH_ALGORITHM_SHAKE_128SHAKE_128
SB_HASH_ALGORITHM_SHAKE_256SHAKE_256
SB_HASH_ALGORITHM_SHAKE_128_LENSHAKE_128_LEN
SB_HASH_ALGORITHM_SHAKE_256_LENSHAKE_256_LEN

Height
int

Default Value: 0

Specifies the height of the signature widget.

Note that the dimensions of the widget are provided in document-specific points, not pixels.

Level
PDFSignatureLevels

Default Value: 0

Specifies the signature kind and level.

pslLegacy0Legacy Adobe signature (adbe.pkcs7.detached or adbe.pkcs7.sha1)
pslBES1PAdES-BES signature (ETSI.CAdES.detached)
pslEPES2PAdES-EPES signature (ETSI.CAdES.detached + embedded policy)
pslLTV3PAdES-LTV signature (ETSI.CAdES.detached + revocation info)
pslDocumentTimestamp4Document timestamp (ETSI.RFC3161)
Note that when validating a signature, the LTV modifier may be affected by the validation settings. These include OfflineMode (set it to true to obtain the clean LTV capability) and certificate caching (switch it off to stop earlier validations from affecting the current validation).

Location
string

Default Value: ""

Specifies the host name or the physical location of the signing entity. This is a PDF property.

OffsetX
int

Default Value: 0

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

OffsetY
int

Default Value: 0

Specifies the signature widget offset from the bottom page border.

Page
int (read-only)

Default Value: -1

Indicates the index of the page on which the signature is placed. The value "-1" indicates an invisible signature.

PolicyHash
string

Default Value: ""

The signature policy hash value for EPES signatures.

PolicyHashAlgorithm
string

Default Value: ""

The algorithm that was used to calculate the signature policy hash.

PolicyID
string

Default Value: ""

The policy ID to be included into the signature.

Reason
string

Default Value: ""

Specifies the reason for signing. This is a PDF document property.

SignatureBytes
byte[] (read-only)

Default Value: ""

Returns the binary representation of the underlying PKCS7 signature blob.

SignatureName
string

Default Value: ""

Specifies the unique signature identifier to use.

This is an internal identifier of a signature (such as Signature1) and is not meant to be human-readable.

SignatureValidationResult
SignatureValidities (read-only)

Default Value: 0

The outcome of the cryptographic signature validation.

The following signature validity values are supported:

svtValid0The signature is valid

svtUnknown1Signature validity is unknown

svtCorrupted2The signature is corrupted

svtSignerNotFound3Failed to acquire the signing certificate. The signature cannot be validated.

svtFailure4General failure

SubjectRDN
string (read-only)

Default Value: ""

Contains the RDN of the owner of the signing certificate.

RDN is a number of OID=Value pairs declared in the certificate that provide the owner's details.

Timestamped
bool (read-only)

Default Value: False

Use this property to establish whether the signature contains an embedded timestamp.

ValidatedSigningTime
string (read-only)

Default Value: ""

Contains the certified signing time.

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

ClaimedSigningTime returns a non-trusted signing time from the signer's computer.

Both times are in UTC.

ValidationLog
string (read-only)

Default Value: ""

Contains the signing certificate's chain validation log. This information may be very useful in investigating chain validation failures.

Width
int

Default Value: 0

Specifies the width of the signature widget.

Note that the dimensions of the widget are provided in document-specific points, not pixels.

Constructors

public PDFSignature();
Public PDFSignature()

Creates a new PDF signature object.

ProxySettings Type

A container for proxy server settings.

Remarks

This type exposes a collection of properties for tuning up the proxy server configuration.

Fields

Address
string

Default Value: ""

The IP address of the proxy server.

Authentication
ProxyAuthTypes

Default Value: 0

The authentication type used by the proxy server.

patNoAuthentication0
patBasic1
patDigest2
patNTLM3

Password
string

Default Value: ""

The password to authenticate to the proxy server.

Port
int

Default Value: 0

The port on the proxy server to connect to.

ProxyType
ProxyTypes

Default Value: 0

The type of the proxy server.

The WebTunnel proxy is also known as HTTPS proxy. Unlike HTTP proxy, HTTPS proxy (WebTunnel) provides end-to-end security.

cptNone0
cptSocks41
cptSocks52
cptWebTunnel3
cptHTTP4

RequestHeaders
string

Default Value: ""

Contains HTTP request headers for WebTunnel and HTTP proxy.

ResponseBody
string

Default Value: ""

Contains the HTTP or HTTPS (WebTunnel) proxy response body.

ResponseHeaders
string

Default Value: ""

Contains response headers received from an HTTP or HTTPS (WebTunnel) proxy server.

UseIPv6
bool

Default Value: False

Specifies whether IPv6 should be used when connecting through the proxy.

UseProxy
bool

Default Value: False

Enables or disables proxy-driven connection.

Username
string

Default Value: ""

Specifies the username credential for proxy authentication.

Constructors

public ProxySettings();
Public ProxySettings()

Creates a new ProxySettings object.

SocketSettings Type

A container for the socket settings.

Remarks

This type is a container for socket-layer parameters.

Fields

DNSMode
DNSResolveModes

Default Value: 0

Selects the DNS resolver to use: the component's (secure) built-in one, or the one provided by the system.

dmAuto0
dmPlatform1
dmOwn2
dmOwnSecure3

DNSPort
int

Default Value: 0

Specifies the port number to be used for sending queries to the DNS server.

DNSQueryTimeout
int

Default Value: 0

The timeout (in milliseconds) for each DNS query. The value of 0 indicates an infinite timeout.

DNSServers
string

Default Value: ""

The addresses of DNS servers to use for address resolution, separated by commas or semicolons.

DNSTotalTimeout
int

Default Value: 0

The timeout (in milliseconds) for the whole resolution process. The value of 0 indicates an infinite timeout.

IncomingSpeedLimit
int

Default Value: 0

The maximum number of bytes to read from the socket, per second.

LocalAddress
string

Default Value: ""

The local network interface to bind the socket to.

LocalPort
int

Default Value: 0

The local port number to bind the socket to.

OutgoingSpeedLimit
int

Default Value: 0

The maximum number of bytes to write to the socket, per second.

Timeout
int

Default Value: 60000

The maximum period of waiting, in milliseconds, after which the socket operation is considered unsuccessful.

If Timeout is set to 0, a socket operation will expire after the system-default timeout (2 hrs 8 min for TCP stack).

UseIPv6
bool

Default Value: False

Enables or disables IP protocol version 6.

Constructors

public SocketSettings();
Public SocketSettings()

Creates a new SocketSettings object.

TimestampInfo Type

A container for timestamp information.

Remarks

The TimestampInfo object contains details of a third-party timestamp and the outcome of its validation.

Fields

Accuracy
long (read-only)

Default Value: 0

This field indicates the accuracy of the included time mark, in microseconds.

Bytes
byte[] (read-only)

Default Value: ""

Returns the raw timestamp data in DER format.

CertificateIndex
int (read-only)

Default Value: -1

Returns the index of the TSA certificate in the Certificates collection.

Use this property to look up the TSA certificate in the Certificates collection.

ChainValidationDetails
int (read-only)

Default Value: 0

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

Returns a bit mask of the following options:

cvrBadData0x0001One or more certificates in the validation path are malformed

cvrRevoked0x0002One or more certificates are revoked

cvrNotYetValid0x0004One or more certificates are not yet valid

cvrExpired0x0008One or more certificates are expired

cvrInvalidSignature0x0010A certificate contains a non-valid digital signature

cvrUnknownCA0x0020A CA certificate for one or more certificates has not been found (chain incomplete)

cvrCAUnauthorized0x0040One of the CA certificates are not authorized to act as CA

cvrCRLNotVerified0x0080One or more CRLs could not be verified

cvrOCSPNotVerified0x0100One or more OCSP responses could not be verified

cvrIdentityMismatch0x0200The identity protected by the certificate (a TLS endpoint or an e-mail addressee) does not match what is recorded in the certificate

cvrNoKeyUsage0x0400A mandatory key usage is not enabled in one of the chain certificates

cvrBlocked0x0800One or more certificates are blocked

cvrFailure0x1000General validation failure

cvrChainLoop0x2000Chain loop: one of the CA certificates recursively signs itself

cvrWeakAlgorithm0x4000A weak algorithm is used in one of certificates or revocation elements

cvrUserEnforced0x8000The chain was considered invalid following intervention from a user code

ChainValidationResult
ChainValidities (read-only)

Default Value: 0

The outcome of a certificate chain validation routine.

Available options:

cvtValid0The chain is valid

cvtValidButUntrusted1The chain is valid, but the root certificate is not trusted

cvtInvalid2The chain is not valid (some of certificates are revoked, expired, or contain an invalid signature)

cvtCantBeEstablished3The validity of the chain cannot be established because of missing or unavailable validation information (certificates, CRLs, or OCSP responses)

Use the ValidationLog property to access the detailed validation log.

HashAlgorithm
string (read-only)

Default Value: ""

Returns the timestamp's hash algorithm.

SB_HASH_ALGORITHM_SHA1SHA1
SB_HASH_ALGORITHM_SHA224SHA224
SB_HASH_ALGORITHM_SHA256SHA256
SB_HASH_ALGORITHM_SHA384SHA384
SB_HASH_ALGORITHM_SHA512SHA512
SB_HASH_ALGORITHM_MD2MD2
SB_HASH_ALGORITHM_MD4MD4
SB_HASH_ALGORITHM_MD5MD5
SB_HASH_ALGORITHM_RIPEMD160RIPEMD160
SB_HASH_ALGORITHM_CRC32CRC32
SB_HASH_ALGORITHM_SSL3SSL3
SB_HASH_ALGORITHM_GOST_R3411_1994GOST1994
SB_HASH_ALGORITHM_WHIRLPOOLWHIRLPOOL
SB_HASH_ALGORITHM_POLY1305POLY1305
SB_HASH_ALGORITHM_SHA3_224SHA3_224
SB_HASH_ALGORITHM_SHA3_256SHA3_256
SB_HASH_ALGORITHM_SHA3_384SHA3_384
SB_HASH_ALGORITHM_SHA3_512SHA3_512
SB_HASH_ALGORITHM_BLAKE2S_128BLAKE2S_128
SB_HASH_ALGORITHM_BLAKE2S_160BLAKE2S_160
SB_HASH_ALGORITHM_BLAKE2S_224BLAKE2S_224
SB_HASH_ALGORITHM_BLAKE2S_256BLAKE2S_256
SB_HASH_ALGORITHM_BLAKE2B_160BLAKE2B_160
SB_HASH_ALGORITHM_BLAKE2B_256BLAKE2B_256
SB_HASH_ALGORITHM_BLAKE2B_384BLAKE2B_384
SB_HASH_ALGORITHM_BLAKE2B_512BLAKE2B_512
SB_HASH_ALGORITHM_SHAKE_128SHAKE_128
SB_HASH_ALGORITHM_SHAKE_256SHAKE_256
SB_HASH_ALGORITHM_SHAKE_128_LENSHAKE_128_LEN
SB_HASH_ALGORITHM_SHAKE_256_LENSHAKE_256_LEN

SerialNumber
byte[] (read-only)

Default Value: ""

Returns the timestamp's serial number.

SignatureIndex
int (read-only)

Default Value: -1

Returns the index of the owner signature, if applicable.

Use this property to establish the index of the associated signature object in the signature collection.

Time
string (read-only)

Default Value: ""

The time point incorporated into the timestamp.

TimestampType
int (read-only)

Default Value: 0

Returns the type of the timestamp.

Available options:

tstUnknown0
tstLegacy1Supported by: Authenticode components

tstTrusted2Supported by: Authenticode components

tstGeneric3Supported by: CAdES components

tstESC4Supported by: CAdES components

tstContent5Supported by: CAdES components

tstCertsAndCRLs6Supported by: CAdES components

tstArchive7Archive timestamp. Supported by: ASiC, CAdES, JAdES, Office, SOAP, XAdES components

tstArchive28Archive v2 timestamp. Supported by: ASiC, CAdES components

tstArchive39Archive v3 timestamp. Supported by: ASiC, CAdES components

tstIndividualDataObjects10Individual data objects timetamp. Supported by: ASiC, Office, SOAP, XAdES components

tstAllDataObjects11All data objects timestamp. Supported by: ASiC, Office, SOAP, XAdES components

tstSignature12Signature timestamp. Supported by: ASiC, JAdES, Office, SOAP, XAdES components

tstRefsOnly13RefsOnly timestamp. Supported by: ASiC, JAdES, Office, SOAP, XAdES components

tstSigAndRefs14SigAndRefs timestamp. Supported by: ASiC, JAdES, Office, SOAP, XAdES components

tstSignedData15SignedData timestamp. Supported by: JAdES components

tstArchive14116Archive timestamp v1.4.1. Supported by: ASiC, Office, SOAP, XAdES components

Not all of the above timestamp types can be supported by a specific signature technology used (CAdES, PDF, XAdES).

TSAName
string (read-only)

Default Value: ""

This value uniquely identifies the Timestamp Authority (TSA).

This property provides information about the entity that manages the TSA.

ValidationLog
string (read-only)

Default Value: ""

Contains the TSA certificate chain validation log. This information is extremely useful if the timestamp validation fails.

ValidationResult
SignatureValidities (read-only)

Default Value: 0

Contains the timestamp validation outcome.

Use this property to check the result of the most recent timestamp validation.

svtValid0The signature is valid

svtUnknown1Signature validity is unknown

svtCorrupted2The signature is corrupted

svtSignerNotFound3Failed to acquire the signing certificate. The signature cannot be validated.

svtFailure4General failure

Constructors

public TimestampInfo();
Public TimestampInfo()

Creates a new TimestampInfo object with default field values.

TLSSettings Type

A container for TLS connection settings.

Remarks

The TLS (Transport Layer Security) protocol provides security for information exchanged over insecure connections such as TCP/IP.

Fields

AutoValidateCertificates
bool

Default Value: True

Specifies whether server-side TLS certificates should be validated automatically using internal validation rules.

BaseConfiguration
SecureTransportPredefinedConfigurations

Default Value: 0

Selects the base configuration for the TLS settings. Several profiles are offered and tuned up for different purposes, such as high security or higher compatibility.

stpcDefault0
stpcCompatible1
stpcComprehensiveInsecure2
stpcHighlySecure3

Ciphersuites
string

Default Value: ""

A list of ciphersuites separated with commas or semicolons. Each ciphersuite in the list may be prefixed with a minus sign (-) to indicate that the ciphersuite should be disabled rather than enabled. Besides the specific ciphersuite modifiers, this property supports the all (and -all) aliases, allowing all ciphersuites to be blanketly enabled or disabled at once.

Note: the list of ciphersuites provided to this property alters the baseline list of ciphersuites as defined by BaseConfiguration. Remember to start your ciphersuite string with -all; if you need to only enable a specific fixed set of ciphersuites. The list of supported ciphersuites is provided below:

  • NULL_NULL_NULL
  • RSA_NULL_MD5
  • RSA_NULL_SHA
  • RSA_RC4_MD5
  • RSA_RC4_SHA
  • RSA_RC2_MD5
  • RSA_IDEA_MD5
  • RSA_IDEA_SHA
  • RSA_DES_MD5
  • RSA_DES_SHA
  • RSA_3DES_MD5
  • RSA_3DES_SHA
  • RSA_AES128_SHA
  • RSA_AES256_SHA
  • DH_DSS_DES_SHA
  • DH_DSS_3DES_SHA
  • DH_DSS_AES128_SHA
  • DH_DSS_AES256_SHA
  • DH_RSA_DES_SHA
  • DH_RSA_3DES_SHA
  • DH_RSA_AES128_SHA
  • DH_RSA_AES256_SHA
  • DHE_DSS_DES_SHA
  • DHE_DSS_3DES_SHA
  • DHE_DSS_AES128_SHA
  • DHE_DSS_AES256_SHA
  • DHE_RSA_DES_SHA
  • DHE_RSA_3DES_SHA
  • DHE_RSA_AES128_SHA
  • DHE_RSA_AES256_SHA
  • DH_ANON_RC4_MD5
  • DH_ANON_DES_SHA
  • DH_ANON_3DES_SHA
  • DH_ANON_AES128_SHA
  • DH_ANON_AES256_SHA
  • RSA_RC2_MD5_EXPORT
  • RSA_RC4_MD5_EXPORT
  • RSA_DES_SHA_EXPORT
  • DH_DSS_DES_SHA_EXPORT
  • DH_RSA_DES_SHA_EXPORT
  • DHE_DSS_DES_SHA_EXPORT
  • DHE_RSA_DES_SHA_EXPORT
  • DH_ANON_RC4_MD5_EXPORT
  • DH_ANON_DES_SHA_EXPORT
  • RSA_CAMELLIA128_SHA
  • DH_DSS_CAMELLIA128_SHA
  • DH_RSA_CAMELLIA128_SHA
  • DHE_DSS_CAMELLIA128_SHA
  • DHE_RSA_CAMELLIA128_SHA
  • DH_ANON_CAMELLIA128_SHA
  • RSA_CAMELLIA256_SHA
  • DH_DSS_CAMELLIA256_SHA
  • DH_RSA_CAMELLIA256_SHA
  • DHE_DSS_CAMELLIA256_SHA
  • DHE_RSA_CAMELLIA256_SHA
  • DH_ANON_CAMELLIA256_SHA
  • PSK_RC4_SHA
  • PSK_3DES_SHA
  • PSK_AES128_SHA
  • PSK_AES256_SHA
  • DHE_PSK_RC4_SHA
  • DHE_PSK_3DES_SHA
  • DHE_PSK_AES128_SHA
  • DHE_PSK_AES256_SHA
  • RSA_PSK_RC4_SHA
  • RSA_PSK_3DES_SHA
  • RSA_PSK_AES128_SHA
  • RSA_PSK_AES256_SHA
  • RSA_SEED_SHA
  • DH_DSS_SEED_SHA
  • DH_RSA_SEED_SHA
  • DHE_DSS_SEED_SHA
  • DHE_RSA_SEED_SHA
  • DH_ANON_SEED_SHA
  • SRP_SHA_3DES_SHA
  • SRP_SHA_RSA_3DES_SHA
  • SRP_SHA_DSS_3DES_SHA
  • SRP_SHA_AES128_SHA
  • SRP_SHA_RSA_AES128_SHA
  • SRP_SHA_DSS_AES128_SHA
  • SRP_SHA_AES256_SHA
  • SRP_SHA_RSA_AES256_SHA
  • SRP_SHA_DSS_AES256_SHA
  • ECDH_ECDSA_NULL_SHA
  • ECDH_ECDSA_RC4_SHA
  • ECDH_ECDSA_3DES_SHA
  • ECDH_ECDSA_AES128_SHA
  • ECDH_ECDSA_AES256_SHA
  • ECDHE_ECDSA_NULL_SHA
  • ECDHE_ECDSA_RC4_SHA
  • ECDHE_ECDSA_3DES_SHA
  • ECDHE_ECDSA_AES128_SHA
  • ECDHE_ECDSA_AES256_SHA
  • ECDH_RSA_NULL_SHA
  • ECDH_RSA_RC4_SHA
  • ECDH_RSA_3DES_SHA
  • ECDH_RSA_AES128_SHA
  • ECDH_RSA_AES256_SHA
  • ECDHE_RSA_NULL_SHA
  • ECDHE_RSA_RC4_SHA
  • ECDHE_RSA_3DES_SHA
  • ECDHE_RSA_AES128_SHA
  • ECDHE_RSA_AES256_SHA
  • ECDH_ANON_NULL_SHA
  • ECDH_ANON_RC4_SHA
  • ECDH_ANON_3DES_SHA
  • ECDH_ANON_AES128_SHA
  • ECDH_ANON_AES256_SHA
  • RSA_NULL_SHA256
  • RSA_AES128_SHA256
  • RSA_AES256_SHA256
  • DH_DSS_AES128_SHA256
  • DH_RSA_AES128_SHA256
  • DHE_DSS_AES128_SHA256
  • DHE_RSA_AES128_SHA256
  • DH_DSS_AES256_SHA256
  • DH_RSA_AES256_SHA256
  • DHE_DSS_AES256_SHA256
  • DHE_RSA_AES256_SHA256
  • DH_ANON_AES128_SHA256
  • DH_ANON_AES256_SHA256
  • RSA_AES128_GCM_SHA256
  • RSA_AES256_GCM_SHA384
  • DHE_RSA_AES128_GCM_SHA256
  • DHE_RSA_AES256_GCM_SHA384
  • DH_RSA_AES128_GCM_SHA256
  • DH_RSA_AES256_GCM_SHA384
  • DHE_DSS_AES128_GCM_SHA256
  • DHE_DSS_AES256_GCM_SHA384
  • DH_DSS_AES128_GCM_SHA256
  • DH_DSS_AES256_GCM_SHA384
  • DH_ANON_AES128_GCM_SHA256
  • DH_ANON_AES256_GCM_SHA384
  • ECDHE_ECDSA_AES128_SHA256
  • ECDHE_ECDSA_AES256_SHA384
  • ECDH_ECDSA_AES128_SHA256
  • ECDH_ECDSA_AES256_SHA384
  • ECDHE_RSA_AES128_SHA256
  • ECDHE_RSA_AES256_SHA384
  • ECDH_RSA_AES128_SHA256
  • ECDH_RSA_AES256_SHA384
  • ECDHE_ECDSA_AES128_GCM_SHA256
  • ECDHE_ECDSA_AES256_GCM_SHA384
  • ECDH_ECDSA_AES128_GCM_SHA256
  • ECDH_ECDSA_AES256_GCM_SHA384
  • ECDHE_RSA_AES128_GCM_SHA256
  • ECDHE_RSA_AES256_GCM_SHA384
  • ECDH_RSA_AES128_GCM_SHA256
  • ECDH_RSA_AES256_GCM_SHA384
  • PSK_AES128_GCM_SHA256
  • PSK_AES256_GCM_SHA384
  • DHE_PSK_AES128_GCM_SHA256
  • DHE_PSK_AES256_GCM_SHA384
  • RSA_PSK_AES128_GCM_SHA256
  • RSA_PSK_AES256_GCM_SHA384
  • PSK_AES128_SHA256
  • PSK_AES256_SHA384
  • PSK_NULL_SHA256
  • PSK_NULL_SHA384
  • DHE_PSK_AES128_SHA256
  • DHE_PSK_AES256_SHA384
  • DHE_PSK_NULL_SHA256
  • DHE_PSK_NULL_SHA384
  • RSA_PSK_AES128_SHA256
  • RSA_PSK_AES256_SHA384
  • RSA_PSK_NULL_SHA256
  • RSA_PSK_NULL_SHA384
  • RSA_CAMELLIA128_SHA256
  • DH_DSS_CAMELLIA128_SHA256
  • DH_RSA_CAMELLIA128_SHA256
  • DHE_DSS_CAMELLIA128_SHA256
  • DHE_RSA_CAMELLIA128_SHA256
  • DH_ANON_CAMELLIA128_SHA256
  • RSA_CAMELLIA256_SHA256
  • DH_DSS_CAMELLIA256_SHA256
  • DH_RSA_CAMELLIA256_SHA256
  • DHE_DSS_CAMELLIA256_SHA256
  • DHE_RSA_CAMELLIA256_SHA256
  • DH_ANON_CAMELLIA256_SHA256
  • ECDHE_ECDSA_CAMELLIA128_SHA256
  • ECDHE_ECDSA_CAMELLIA256_SHA384
  • ECDH_ECDSA_CAMELLIA128_SHA256
  • ECDH_ECDSA_CAMELLIA256_SHA384
  • ECDHE_RSA_CAMELLIA128_SHA256
  • ECDHE_RSA_CAMELLIA256_SHA384
  • ECDH_RSA_CAMELLIA128_SHA256
  • ECDH_RSA_CAMELLIA256_SHA384
  • RSA_CAMELLIA128_GCM_SHA256
  • RSA_CAMELLIA256_GCM_SHA384
  • DHE_RSA_CAMELLIA128_GCM_SHA256
  • DHE_RSA_CAMELLIA256_GCM_SHA384
  • DH_RSA_CAMELLIA128_GCM_SHA256
  • DH_RSA_CAMELLIA256_GCM_SHA384
  • DHE_DSS_CAMELLIA128_GCM_SHA256
  • DHE_DSS_CAMELLIA256_GCM_SHA384
  • DH_DSS_CAMELLIA128_GCM_SHA256
  • DH_DSS_CAMELLIA256_GCM_SHA384
  • DH_anon_CAMELLIA128_GCM_SHA256
  • DH_anon_CAMELLIA256_GCM_SHA384
  • ECDHE_ECDSA_CAMELLIA128_GCM_SHA256
  • ECDHE_ECDSA_CAMELLIA256_GCM_SHA384
  • ECDH_ECDSA_CAMELLIA128_GCM_SHA256
  • ECDH_ECDSA_CAMELLIA256_GCM_SHA384
  • ECDHE_RSA_CAMELLIA128_GCM_SHA256
  • ECDHE_RSA_CAMELLIA256_GCM_SHA384
  • ECDH_RSA_CAMELLIA128_GCM_SHA256
  • ECDH_RSA_CAMELLIA256_GCM_SHA384
  • PSK_CAMELLIA128_GCM_SHA256
  • PSK_CAMELLIA256_GCM_SHA384
  • DHE_PSK_CAMELLIA128_GCM_SHA256
  • DHE_PSK_CAMELLIA256_GCM_SHA384
  • RSA_PSK_CAMELLIA128_GCM_SHA256
  • RSA_PSK_CAMELLIA256_GCM_SHA384
  • PSK_CAMELLIA128_SHA256
  • PSK_CAMELLIA256_SHA384
  • DHE_PSK_CAMELLIA128_SHA256
  • DHE_PSK_CAMELLIA256_SHA384
  • RSA_PSK_CAMELLIA128_SHA256
  • RSA_PSK_CAMELLIA256_SHA384
  • ECDHE_PSK_CAMELLIA128_SHA256
  • ECDHE_PSK_CAMELLIA256_SHA384
  • ECDHE_PSK_RC4_SHA
  • ECDHE_PSK_3DES_SHA
  • ECDHE_PSK_AES128_SHA
  • ECDHE_PSK_AES256_SHA
  • ECDHE_PSK_AES128_SHA256
  • ECDHE_PSK_AES256_SHA384
  • ECDHE_PSK_NULL_SHA
  • ECDHE_PSK_NULL_SHA256
  • ECDHE_PSK_NULL_SHA384
  • ECDHE_RSA_CHACHA20_POLY1305_SHA256
  • ECDHE_ECDSA_CHACHA20_POLY1305_SHA256
  • DHE_RSA_CHACHA20_POLY1305_SHA256
  • PSK_CHACHA20_POLY1305_SHA256
  • ECDHE_PSK_CHACHA20_POLY1305_SHA256
  • DHE_PSK_CHACHA20_POLY1305_SHA256
  • RSA_PSK_CHACHA20_POLY1305_SHA256
  • AES128_GCM_SHA256
  • AES256_GCM_SHA384
  • CHACHA20_POLY1305_SHA256
  • AES128_CCM_SHA256
  • AES128_CCM8_SHA256

ECCurves
string

Default Value: ""

Defines the elliptic curves to enable.

Extensions
string

Default Value: ""

Provides access to TLS extensions.

ForceResumeIfDestinationChanges
bool

Default Value: False

Whether to force TLS session resumption when the destination address changes.

PreSharedIdentity
string

Default Value: ""

Defines the identity used when the PSK (Pre-Shared Key) key-exchange mechanism is negotiated.

PreSharedKey
string

Default Value: ""

Contains the pre-shared key for the PSK (Pre-Shared Key) key-exchange mechanism, encoded with base16.

PreSharedKeyCiphersuite
string

Default Value: ""

Defines the ciphersuite used for PSK (Pre-Shared Key) negotiation.

RenegotiationAttackPreventionMode
RenegotiationAttackPreventionModes

Default Value: 0

Selects the renegotiation attack prevention mechanism.

The following options are available:

crapmCompatible0TLS 1.0 and 1.1 compatibility mode (renegotiation indication extension is disabled).
crapmStrict1Renegotiation attack prevention is enabled and enforced.
crapmAuto2Automatically choose whether to enable or disable renegotiation attack prevention.

RevocationCheck
RevocationCheckKinds

Default Value: 1

Specifies the kind(s) of revocation check to perform.

Revocation checking is necessary to ensure the integrity of the chain and obtain up-to-date certificate validity and trustworthiness information.

crcNone0No revocation checking.
crcAuto1Automatic mode selection. Currently this maps to crcAnyOCSPOrCRL, but it may change in the future.
crcAllCRL2All provided CRL endpoints will be checked, and all checks must succeed.
crcAllOCSP3All provided OCSP endpoints will be checked, and all checks must succeed.
crcAllCRLAndOCSP4All provided CRL and OCSP endpoints will be checked, and all checks must succeed.
crcAnyCRL5All provided CRL endpoints will be checked, and at least one check must succeed.
crcAnyOCSP6All provided OCSP endpoints will be checked, and at least one check must succeed.
crcAnyCRLOrOCSP7All provided CRL and OCSP endpoints will be checked, and at least one check must succeed. CRL endpoints are checked first.
crcAnyOCSPOrCRL8All provided CRL and OCSP endpoints will be checked, and at least one check must succeed. OCSP endpoints are checked first.

This setting controls the way the revocation checks are performed for every certificate in the chain. Typically certificates come with two types of revocation information sources: CRL (certificate revocation lists) and OCSP responders. 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 some delay between the time when a certificate was revoked and the time the subsequent CRL mentioning that is published. The benefits of CRL is 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 setting lets you adjust the validation course by including or excluding certain types of revocation sources from the validation process. The crcAnyOCSPOrCRL 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 "crcAll*" 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.

SSLOptions
int

Default Value: 16

Various SSL (TLS) protocol options, set of

cssloExpectShutdownMessage0x001Wait for the close-notify message when shutting down the connection

cssloOpenSSLDTLSWorkaround0x002(DEPRECATED) Use a DTLS version workaround when talking to very old OpenSSL versions

cssloDisableKexLengthAlignment0x004Do not align the client-side PMS by the RSA modulus size. It is unlikely that you will ever need to adjust it.

cssloForceUseOfClientCertHashAlg0x008Enforce the use of the client certificate hash algorithm. It is unlikely that you will ever need to adjust it.

cssloAutoAddServerNameExtension0x010Automatically add the server name extension when known

cssloAcceptTrustedSRPPrimesOnly0x020Accept trusted SRP primes only

cssloDisableSignatureAlgorithmsExtension0x040Disable (do not send) the signature algorithms extension. It is unlikely that you will ever need to adjust it.

cssloIntolerateHigherProtocolVersions0x080(server option) Do not allow fallback from TLS versions higher than currently enabled

cssloStickToPrefCertHashAlg0x100Stick to preferred certificate hash algorithms

cssloNoImplicitTLS12Fallback0x200Disable implicit TLS 1.3 to 1.2 fallbacks

cssloUseHandshakeBatches0x400Send the handshake message as large batches rather than individually

TLSMode
SSLModes

Default Value: 0

Specifies the TLS mode to use.

smDefault0
smNoTLS1Do not use TLS
smExplicitTLS2Connect to the server without any encryption and then request an SSL session.
smImplicitTLS3Connect to the specified port, and establish the SSL session at once.
smMixedTLS4Connect to the specified port, and establish the SSL session at once, but allow plain data.

UseExtendedMasterSecret
bool

Default Value: False

Enables the Extended Master Secret Extension, as defined in RFC 7627.

UseSessionResumption
bool

Default Value: False

Enables or disables the TLS session resumption capability.

Versions
int

Default Value: 16

The SSL/TLS versions to enable by default.

csbSSL20x01SSL 2

csbSSL30x02SSL 3

csbTLS10x04TLS 1.0

csbTLS110x08TLS 1.1

csbTLS120x10TLS 1.2

csbTLS130x20TLS 1.3

Constructors

public TLSSettings();
Public TLSSettings()

Creates a new TLSSettings object.

Config Settings (PDFVerifier Component)

The component 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 component, access to these internal properties is provided through the Config method.

PDFVerifier Config Settings

DislikeOpenEndedOCSPs:   Tells the component to discourage OCSP responses without an explicit NextUpdate parameter.

When this property is set to True, the validation engine treats OCSP response without a NextUpdate field as 'substandard' and tries to obtain some further revocation material for the certificate in question (a different OCSP or a CRL, even if the component is configured to prefer the OCSP route). This is to work around Adobe Reader's intolerance to such OCSPs when classifying signed documents as LTV (as of August 2022).

EmptySignatureFieldAddRevInfo[Index]:   Specifies if revocation checking should be performed.

This property contains True if the viewing application should check the signing certificate revocation info and include the revocation information within the signature value.

EmptySignatureFieldAlternateName[Index]:   Contains an alternate field name.

This property contains an alternate field name to be used in place of the actual field name wherever the field must be identified in the user interface.

EmptySignatureFieldCount:   The number of empty signature form fields.

Returns the number of empty signature form fields available.

EmptySignatureFieldFlags[Index]:   The field flags of the signature form field.

This property contains the empty signature form field flags ("Ff" entry in the signature field dictionary).

EmptySignatureFieldHeight[Index]:   The Height of the empty signature form field.

This property contains the height of the empty signature form field.

EmptySignatureFieldInvisible[Index]:   The visibility status of the field.

This property contains True if the empty signature form field is visible.

EmptySignatureFieldLegalAttestations[Index]:   Specifies the legal attestations that are associated with the signature.

This property contains the legal attestations that are associated with the signature.

EmptySignatureFieldMappingName[Index]:   The mapping name to be used when exporting form field data from the document.

This property contains the name to be used when exporting form field data from the document.

EmptySignatureFieldName[Index]:   Textual field name.

This property contains the empty signature field name.

EmptySignatureFieldOffsetX[Index]:   The field's offset from the left page border.

This property contains the horizontal offset of the empty signature form field.

EmptySignatureFieldOffsetY[Index]:   The field's offset from the bottom page border.

This property contains the vertical offset of the empty signature form field.

EmptySignatureFieldPage[Index]:   The index of the form field's page in the document.

This property contains the index of the empty signature form field's page in the document.

EmptySignatureFieldRequiredAllowedChanges[Index]:   Specifies the changes allowed by the signature.

This property contains the changes that are allowed to the document when the signature field is signed.

EmptySignatureFieldRequiredConstraints[Index]:   Specifies the required Seed Value Dictionary (SVD) constraints.

This property contains the required SVD constraints. If a certain bit in RequiredConstraints is switched on, the corresponding data item is constrained.

EmptySignatureFieldRequiredDigestAlgorithms[Index]:   Specifies the required digest algorithms.

This property contains the list of the digest algorithms used for signature generation.

EmptySignatureFieldRequiredFilter[Index]:   Specifies the required filter.

This property contains the required filter (name of the preferred signature handler) to use for signature generation.

EmptySignatureFieldRequiredLockAction[Index]:   Indicates which set of fields shall be locked.

This property contains a set of form fields that shall be locked when the current signature field is signed.

EmptySignatureFieldRequiredLockFields[Index]:   Indicates the fields that shall be locked on signing.

This property contains the list of form field names that shall be locked when the current signature field is signed. Whether this list shall be included or excluded is defined by the EmptySignatureFieldRequiredLockAction[Index] property.

EmptySignatureFieldRequiredReasons[Index]:   Specifies the required reasons.

This property contains the required reasons used for signature generation.

EmptySignatureFieldRequiredSubfilters[Index]:   Specifies the required subfilters.

This property contains the list of subfilters required by the signature. A subfilter represents the encoding to use when signing the PDF form.

EmptySignatureFieldTimestampRequired[Index]:   Specifies if the signature should be timestamped.

This property contains True if the signature should be timestamped.

EmptySignatureFieldTSPURL[Index]:   URL for a TSP server.

This property contains the TSP server URL.

EmptySignatureFieldWidth[Index]:   The Width of the empty signature form field.

This property contains the width of the empty signature form field.

EncryptionHandlerName:   Specifies the custom security handler PDF-name.

Specifies the custom security handler PDF-name for the encryption handler.

ForceCompleteChainValidation:   Whether to check issuer (CA) certificates when the signing certificate is invalid.

Specifies whether to check issuer (CA) certificates when the signing certificate is invalid.

ForceCompleteChainValidationForTrusted:   Whether to continue with the full validation up to the root CA certificate for mid-level trust anchors.

Set this property to True to enable full chain validation for explicitly trusted intermediary or end-entity certificates. This may be useful when creating signatures to enforce completeness of the collected revocation information. It often makes sense to set this property to false when validating signatures to reduce validation time and avoid issues with badly configured environments.

GracePeriod:   Specifies a grace period to apply during revocation information checks.

Use this property to specify a grace period (in seconds). The grace period applies to certain subprotocols, such as OCSP, and caters to the inaccuracy and/or missynchronization of clocks on different participating systems. Any time deviations within the grace period will be tolerated.

HardenedKeyGeneration:   Specifies if hardened Key generation should be used.

Specifies if hardened Key generation should be used when the AES-256 encryption algorithm and password encryption are used.

IgnoreChainLoops:   Whether chain loops should be ignored.

Set this property to True to make the validation engine ignore chain loops. This may be an option when you need to process chains from buggy CAs that happen to include subchains that sign themselves.

IgnoreOCSPNoCheckExtension:   Whether the OCSP NoCheck extension should be ignored.

Set this property to True to make the validation engine ignore the OCSP no-check extension. You would normally need to set this property when validating severely non-compliant chains that misuse the extension, causing chain loops or other validation issues.

IgnoreSystemTrust:   Whether trusted Windows Certificate Stores should be treated as trusted.

Specifies whether, during chain validation, the component should respect the trust to CA certificates as configured in the operating system. In Windows this effectively defines whether the component should trust the certificates residing in the Trusted Root Certification Authorities store.

If IgnoreSystemTrust is True, certificates residing in the trusted root store are treated as if they are known, rather than trusted. Only certificates provided via other means (such as the TrustedCertificates property) are considered trusted.

ImplicitlyTrustSelfSignedCertificates:   Whether to trust self-signed certificates.

Set this property to True to implicitly trust all self-signed certificates. Use it with care as trusting just about every self-signed certificate is unwise. One exceptional reason where this property may be handy is where a chain is validated in an environment that is not supposed to trust it (for example, a signing, rather than verifying environment, or a QA server). Trusting all self-signing certificates (which are normally trusted) allows emulating the verifying environment without actually changing its security settings.

PageInfoCount:   The number of pages.

Returns the number of pages available.

PageInfoCropBoxEmpty[Index]:   Check if the page's crop box is empty or not.

This property contains True if the crop box is empty, and False otherwise. The crop box defines the region to which the contents of the page shall be clipped (cropped) when displayed or printed.

PageInfoCropLLX[Index]:   Defines the X coordinate of the lower left corner of the crop box.

This property contains the X coordinate of the lower left corner of the crop box of the page. The crop box defines the region to which the contents of the page shall be clipped (cropped) when displayed or printed.

PageInfoCropLLY[Index]:   Defines the Y coordinate of the lower left corner of the crop box.

This property contains the Y coordinate of the lower left corner of the crop box of the page. The crop box defines the region to which the contents of the page shall be clipped (cropped) when displayed or printed.

PageInfoCropURX[Index]:   Defines the X coordinate of the upper right corner of the crop box.

This property contains the X coordinate of the upper right corner of the crop box of the page. The crop box defines the region to which the contents of the page shall be clipped (cropped) when displayed or printed.

PageInfoCropURY[Index]:   Defines the Y coordinate of the upper right corner of the crop box.

This property contains the Y coordinate of the upper right corner of the crop box of the page. The crop box defines the region to which the contents of the page shall be clipped (cropped) when displayed or printed.

PageInfoHeight[Index]:   The Height of the page.

This property contains the page height value.

PageInfoMediaLLX[Index]:   Defines the X coordinate of the lower left corner of the media box.

This property contains the X coordinate of the lower left corner of the media box of the page. The media box defines the boundaries of the physical medium on which the page is to be printed.

PageInfoMediaLLY[Index]:   Defines the Y coordinate of the lower left corner of the media box.

This property contains the Y coordinate of the lower left corner of the media box of the page. The media box defines the boundaries of the physical medium on which the page is to be printed.

PageInfoMediaURX[Index]:   Defines the X coordinate of the upper right corner of the media box.

This property contains the X coordinate of the upper right corner of the media box of the page. The media box defines the boundaries of the physical medium on which the page is to be printed.

PageInfoMediaURY[Index]:   Defines the Y coordinate of the upper right corner of the media box.

This property contains the Y coordinate of the upper right corner of the media box of the page. The media box defines the boundaries of the physical medium on which the page is to be printed.

PageInfoRotate[Index]:   The Rotate value of the page.

This property contains the page rotation angle.

PageInfoUserUnit[Index]:   Defines the size of default user space units.

This property contains a positive number that shall give the size of default user space units, in multiples of 1/72 inch. The default value is 1.0 (user space unit is 1/72 inch).

PageInfoWidth[Index]:   The Width of the page.

This property contains the page width value.

PromoteLongOCSPResponses:   Whether long OCSP responses are requested.

Set this property to True to force the component to publish the 'long' form of OCSP responses. Otherwise, only BasicOCSPResponse blobs are promoted.

PSSUsed:   Whether RSASSA-PSS mode was used.

Although the RSASSA-PSS algorithm provides better security than a classic RSA scheme (PKCS#1-1.5), please take into account that RSASSA-PSS is a relatively new algorithm which may not be understood by older implementations.

RC4KeyBits:   Specifies the number of key bits used for the RC4 algorithm.

Specifies the number of key bits used for the RC4 encryption algorithm.

TolerateMinorChainIssues:   Whether to tolerate minor chain issues.

This parameter controls whether the chain validator should tolerate minor technical issues when validating the chain. Those are:

  • CA, revocation source, TLS key usage requirements are not mandated
  • Violation of OCSP issuer requirements are ignored
  • The AuthorityKeyID extension in CRL- and certificate-issuing CAs are ignored (helps with incorrectly renewed certificates)
  • Basic constraints and name constraints of CA certificates are ignored
  • Some weaker algorithms are tolerated
UseMicrosoftCTL:   Enables or disables the automatic use of the Microsoft online certificate trust list.

Enable this property to make the chain validation module automatically look up missing CA certificates in the public Windows Update repository.

UseSystemCertificates:   Enables or disables the use of the system certificates.

Use this property to tell the chain validation module to automatically look up missing CA certificates in the system certificates. In many cases it is beneficial to switch this property on, as the operating system certificate configuration provides a representative trust framework.

UseValidationCache:   Enables or disable the use of the product-wide certificate chain validation cache.

Use this property to enable or disable the use of the global chain validation cache. If enabled, the component will consult the product-wide validation cache when validating the signing chains. Also, the outcomes of any new chain validations performed by the component, both interim and final, will be saved in the cache and available for re-use by any future validations. Disable this property to ignore the cache and always perform the validation from a fresh start.

Base Config Settings

CheckKeyIntegrityBeforeUse:   Enables or disable private key integrity check before use.

This global property enables or disables private key material check before each signing operation. This slows down performance a bit, but prevents a selection of attacks on RSA keys where keys with unknown origins are used.

You can switch this property off to improve performance if your project only uses known, good private keys.

CookieCaching:   Specifies whether a cookie cache should be used for HTTP(S) transports.

Set this property to enable or disable cookies caching for the component.

Supported values are:

offNo caching (default)
localLocal caching
globalGlobal caching

Cookies:   Gets or sets local cookies for the component.

Use this property to get cookies from the internal cookie storage of the component and/or restore them back between application sessions.

DefDeriveKeyIterations:   Specifies the default key derivation algorithm iteration count.

This global property sets the default number of iterations for all supported key derivation algorithms. Note that you can provide the required number of iterations by using properties of the relevant key generation component; this global setting is used in scenarios where specific iteration count is not or cannot be provided.

EnableClientSideSSLFFDHE:   Enables or disables finite field DHE key exchange support in TLS clients.

This global property enables or disables support for finite field DHE key exchange methods in TLS clients. FF DHE is a slower algorithm if compared to EC DHE; enabling it may result in slower connections.

This setting only applies to sessions negotiated with TLS version 1.3.

GlobalCookies:   Gets or sets global cookies for all the HTTP transports.

Use this property to get cookies from the GLOBAL cookie storage or restore them back between application sessions. These cookies will be used by all the components that have its CookieCaching property set to "global".

HttpUserAgent:   Specifies the user agent name to be used by all HTTP clients.

This global setting defines the User-Agent field of the HTTP request provides information about the software that initiates the request. This value will be used by all the HTTP clients including the ones used internally in other components.

LogDestination:   Specifies the debug log destination.

Contains a comma-separated list of values that specifies where debug log should be dumped.

Supported values are:

fileFile
consoleConsole
systemlogSystem Log (supported for Android only)
debuggerDebugger (supported for VCL for Windows and .Net)

LogDetails:   Specifies the debug log details to dump.

Contains a comma-separated list of values that specifies which debug log details to dump.

Supported values are:

timeCurrent time
levelLevel
packagePackage name
moduleModule name
classClass name
methodMethod name
threadidThread Id
contenttypeContent type
contentContent
allAll details

LogFile:   Specifies the debug log filename.

Use this property to provide a path to the log file.

LogFilters:   Specifies the debug log filters.

Contains a comma-separated list of value pairs ("name:value") that describe filters.

Supported filter names are:

exclude-packageExclude a package specified in the value
exclude-moduleExclude a module specified in the value
exclude-classExclude a class specified in the value
exclude-methodExclude a method specified in the value
include-packageInclude a package specified in the value
include-moduleInclude a module specified in the value
include-classInclude a class specified in the value
include-methodInclude a method specified in the value

LogFlushMode:   Specifies the log flush mode.

Use this property to set the log flush mode. The following values are defined:

noneNo flush (caching only)
immediateImmediate flush (real-time logging)
maxcountFlush cached entries upon reaching LogMaxEventCount entries in the cache.

LogLevel:   Specifies the debug log level.

Use this property to provide the desired debug log level.

Supported values are:

noneNone (by default)
fatalSevere errors that cause premature termination.
errorOther runtime errors or unexpected conditions.
warningUse of deprecated APIs, poor use of API, 'almost' errors, other runtime situations that are undesirable or unexpected, but not necessarily "wrong".
infoInteresting runtime events (startup/shutdown).
debugDetailed information on flow of through the system.
traceMore detailed information.

LogMaxEventCount:   Specifies the maximum number of events to cache before further action is taken.

Use this property to specify the log event number threshold. This threshold may have different effects, depending on the rotation setting and/or the flush mode.

The default value of this setting is 100.

LogRotationMode:   Specifies the log rotation mode.

Use this property to set the log rotation mode. The following values are defined:

noneNo rotation
deleteolderDelete older entries from the cache upon reaching LogMaxEventCount
keepolderKeep older entries in the cache upon reaching LogMaxEventCount (newer entries are discarded)

MaxASN1BufferLength:   Specifies the maximal allowed length for ASN.1 primitive tag data.

This global property limits the maximal allowed length for ASN.1 tag data for non-content-carrying structures, such as certificates, CRLs, or timestamps. It does not affect structures that can carry content, such as CMS/CAdES messages. This is a security property aiming at preventing DoS attacks.

MaxASN1TreeDepth:   Specifies the maximal depth for processed ASN.1 trees.

This global property limits the maximal depth of ASN.1 trees that the component can handle without throwing an error. This is a security property aiming at preventing DoS attacks.

OCSPHashAlgorithm:   Specifies the hash algorithm to be used to identify certificates in OCSP requests.

This global setting defines the hash algorithm to use in OCSP requests during chain validation. Some OCSP responders can only use older algorithms, in which case setting this property to SHA1 may be helpful.

StaticDNS:   Specifies whether static DNS rules should be used.

Set this property to enable or disable static DNS rules for the component. Works only if UseOwnDNSResolver is set to true.

Supported values are:

noneNo static DNS rules (default)
localLocal static DNS rules
globalGlobal static DNS rules

StaticIPAddress[domain]:   Gets or sets an IP address for the specified domain name.

Use this property to get or set an IP address for the specified domain name in the internal (of the component) or global DNS rules storage depending on the StaticDNS value. The type of the IP address (IPv4 or IPv6) is determined automatically. If both addresses are available, they are devided by the | (pipe) character.

StaticIPAddresses:   Gets or sets all the static DNS rules.

Use this property to get static DNS rules from the current rules storage or restore them back between application sessions. If StaticDNS of the component is set to "local", the property returns/restores the rules from/to the internal storage of the component. If StaticDNS of the component is set to "global", the property returns/restores the rules from/to the GLOBAL storage. The rules list is returned and accepted in JSON format.

Tag:   Allows to store any custom data.

Use this config property to store any custom data.

TLSSessionGroup:   Specifies the group name of TLS sessions to be used for session resumption.

Use this property to limit the search of chached TLS sessions to the specified group. Sessions from other groups will be ignored. By default, all sessions are cached with an empty group name and available to all the components.

TLSSessionLifetime:   Specifies lifetime in seconds of the cached TLS session.

Use this property to specify how much time the TLS session should be kept in the session cache. After this time, the session expires and will be automatically removed from the cache. Default value is 300 seconds (5 minutes).

TLSSessionPurgeInterval:   Specifies how often the session cache should remove the expired TLS sessions.

Use this property to specify the time interval of purging the expired TLS sessions from the session cache. Default value is 60 seconds (1 minute).

UseOwnDNSResolver:   Specifies whether the client components should use own DNS resolver.

Set this global property to false to force all the client components to use the DNS resolver provided by the target OS instead of using own one.

UseSharedSystemStorages:   Specifies whether the validation engine should use a global per-process copy of the system certificate stores.

Set this global property to false to make each validation run use its own copy of system certificate stores.

UseSystemOAEPAndPSS:   Enforces or disables the use of system-driven RSA OAEP and PSS computations.

This global setting defines who is responsible for performing RSA-OAEP and RSA-PSS computations where the private key is stored in a Windows system store and is exportable. If set to true, SBB will delegate the computations to Windows via a CryptoAPI call. Otherwise, it will export the key material and perform the computations using its own OAEP/PSS implementation.

This setting only applies to certificates originating from a Windows system store.

UseSystemRandom:   Enables or disables the use of the OS PRNG.

Use this global property to enable or disable the use of operating system-driven pseudorandom number generation.

Trappable Errors (PDFVerifier Component)

PDFVerifier Errors

1048577   Invalid parameter value (SB_ERROR_INVALID_PARAMETER)
1048578   Component is configured incorrectly (SB_ERROR_INVALID_SETUP)
1048579   Operation cannot be executed in the current state (SB_ERROR_INVALID_STATE)
1048580   Attempt to set an invalid value to a property (SB_ERROR_INVALID_VALUE)
1048581   Certificate does not have its private key loaded (SB_ERROR_NO_PRIVATE_KEY)
1048581   Cancelled by the user (SB_ERROR_CANCELLED_BY_USER) 
26214401   Input file does not exist (SB_ERROR_PDF_INPUTFILE_NOT_EXISTS)
26214402   Document is encrypted (SB_ERROR_PDF_ENCRYPTED)
26214403   Document not encrypted (SB_ERROR_PDF_NOT_ENCRYPTED)
26214404   Unknown certificate type (SB_ERROR_PDF_UNKNOWN_ENCRYPTION_TYPE)
26214405   Invalid password (SB_ERROR_PDF_INVALID_PASSWORD)
26214406   Decryption failed (SB_ERROR_PDF_DECRYPTION_FAILED)
26214407   Document is signed (SB_ERROR_PDF_SIGNED)
26214408   Document is not signed (SB_ERROR_PDF_NOT_SIGNED)
26214409   Inappropriate signature (SB_ERROR_PDF_INAPPROPRIATE_SIGNATURE)
26214410   Not supported (SB_ERROR_PDF_NOT_SUPPORTED)