PDFSigner Class

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The PDFSigner class signs PDF documents digitally.

Syntax

secureblackbox.PDFSigner

Remarks

PDFSigner can sign PDF documents in accordance with a selection of PDF and PAdES signature standards. PDFSigner signer = new PDFSigner(); // Set the PDF document that you want to sign signer.setInputFile("MyDocument.pdf"); // Set the path where you want the signed document to be saved signer.setOutputFile("Signed.pdf"); // The certificate which the document will be signed with signer.setSigningCertificate(new Certificate("Cert.pfx","password")); // The signature level signer.getNewSignature().setLevel(PDFSignature.paslBaselineT); signer.getNewSignature().setHashAlgorithm("SHA512"); // Hashing algorithm used for signing, default SHA256 signer.setTimestampServer("https://..."); // The address of the timestamping server signer.sign();

Standards and technologies supported

PDFSigner can create PDF signatures that match the following baseline standards:

  • Generic PDF signatures (ISO 32000)
  • PAdES: all profiles are supported (BES, EPES, T, LTV, B-B, B-T, and others) (ETSI EN 319 142-1 and others)
  • Signature and document timestamps using external TSAs.
  • All industry-standard cryptographic algorithms (RSA, ECDSA, SHA256-512, and many others).

Configuring the signature spec

Configuring PDFSigner to produce signatures of the right type is one of the most important questions you need to address. Normally the service or software you will be communicating your PDF documents to will provide you with the list of requirements that your signatures should match.

Typically, those will dictate the following key aspects of the signatures:

  • Level (BES, T, or LTV). This can be adjusted with the Level property (Note: when creating EPES signatures you need to provide the signature PolicyID and PolicyHash properties).
  • Timestamp requirement: provide the address of your online TSA service via the TimestampServer property.
  • When creating LTV signatures, tune up validation parameters via the RevocationCheck, OfflineMode, and IgnoreChainValidationErrors properties.
  • To create a document timestamp, sign your document first, and then sign the result again with Level set to pslDocumentTimestamp and TimestampServer pointing to the TSA URL.

Signing certificates

PDFSigner can use certificates residing on different media. Besides generic certificates stored in PFX or PEM files (A1), it can operate with non-exportable certificates residing on hardware media (A3) or in the cloud.

Non-exportable certificates can be accessed transparently via a Windows CSP or a PKCS#11 driver, if supplied by the certificate issuer. Proprietary interfaces can be plugged in with the external signing feature (see below).

You can use the CertificateManager and CertificateStorage classes to load the signing certificate. Assign the certificate to the SigningCertificate property, and optionally provide the remainder of its chain via the SigningChain property.

Note: If signing with a non-exportable key (such as residing on a hardware device or in the cloud), please make sure you keep the original CertificateStorage object open until the signing is completed. This is because the storage class provides a 'bridge' to the private key. If the storage is closed prematurely, this bridge is destroyed, and the private key can't be used.

You don't need to provide a signing certificate or chain when creating document timestamp signatures, since this type of signature is done with a TSA's certificate.

Widget adjustment

PDFSigner provides means to customize the look of the signature widget to be shown on the document page. Create your very own signatures in the form of your company's logo, a handwritten signature, or a wet seal.

Alternatively, you can choose not to associate any widget with your signature by setting Invisible to true.

Please check out this self-describing PDF document for good guidance on widget positioning, background styles, and text formatting.

Signing the document

Now that you have set up all signature, certificate, and widget properties, it is time to sign. You can provide the input document in one of the following forms: as a file (assign the path to the InputFile property), as a stream (assign to the InputStream property), or as a byte array (assign to InputBytes). Similarly, the output can be collected in one of the same forms, either by passing the destination path or stream via OutputFile and OutputStream respectively, or by reading the resulting document bytes from the OutputBytes property after the signing.

Having set up the input and output, call the class's Sign method. This will initiate the signing process. Depending on the settings, the signing may be as straightforward as calculating the document hash and signing it with the private key (e.g. in the PAdES-BES signing variant), or it may involve advanced chain validation routines (PAdES-LTV). During the latter, the class may contact a number of external revocation information sources (CRL and OCSP servers) to establish the validity of the signing certificate.

If a TSA server was provided via the TimestampServer property, the class will contact it too to timestamp the new signature.

During the signing, PDFSigner may fire events to let your code know of certain conditions. If the input document is encrypted but no decryption parameters were found in the Password and DecryptionCertificate properties, the class will fire the Encrypted event to tell your code that it needs decryption information to be able to continue with the signing. It may fire TLSCertValidate if one of the HTTP endpoints involved during the operation (which may be a CRL, OCSP, or TSA service) works over TLS and needs its certificate to be validated.

External signing and DCAuth

PDFSigner, like many other classes offered by the product, supports two methods of signing with external keys. These methods are fully independent of each other: you can choose the one that suits your usage scenario best.

Synchronous method: ExternalSign

This is a simpler method that basically lets you infiltrate into the heart of the signing routine by taking care of the hash signing operation. The class does the rest of the job (hash calculation, preparation of signature objects, CRL/OCSP retrieval).

To initiate this method, call SignExternal instead of Sign. When the hash is ready, it will be passed back to your code with the ExternalSign event. Your event handler needs to sign the hash with the private key and return the created signature back to the class - which will embed it into the document.

You don't need your signing certificate to contain an associated private key when using this method. The certificate itself (its public copy) may be needed though, as it is often included in the hash calculation.

This method is synchronous, meaning SignExternal provides you the results immediately upon its completion.

Asynchronous method: DCAuth

DCAuth is a SecureBlackbox know-how technology. This protocol was designed to allow sharing of private keys across environments, allowing the signer and the private key to reside on different systems. It works in the following way:

  • The signing party - such as PDFSigner - initiates the operation using a SignAsyncBegin call. This produces two outcomes: a pre-signed document (a document with a blank signature placeholder), and a request state (an object containing a hash that needs to be signed). At this point the PDFSigner instance can be released, and the process itself terminated (which may be useful when run as part of a web page).
  • The request state is passed to the private key holder party. The private key holder passes the request state to a DCAuth object, which parses the request state, extracts the hash, and signs it. The output of DCAuth processing is another object, a response state, which contains the signature. The private key holder then sends the response state back to the signing party.
  • The signing party re-creates the classes and passes the response state, together with the pre-signed version of the document, to the signer's SignAsyncEnd method. SignAsyncEnd extracts the signature from the response state and incorporates it into the pre-signed document.

This method is asynchronous in that sense that from the signing party's viewpoint, it splits the signing operation into the pre-signing and completion stages which can be performed independently from each other and in different execution contexts. This makes this method particularly helpful for use in web pages and other scenarios where the signing key is not available in real time.

Fine-grained chain validation setup

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

  • RevocationCheck lets you choose between and/or prioritize revocation origins. OCSP sources are often preferred to CRL because of their real-time capability and the smaller size of validation tokens they produce.
  • OfflineMode is a master switch that stops the class from looking for any validation tokens online. If this property is switched on, the class will only use the KnownCertificates, TrustedCertificates, KnownCRLs, and KnownOCSPs collections to look for the missing validation material.
  • IgnoreChainValidationErrors makes the class ignore any major validation issues it encounters (such us an untrusted chain or missing CRL). This option is handy for debugging and for creating signatures in the environments where the signing certificate is not trusted.
  • KnownCertificates, KnownCRLs, and KnownOCSPs let you provide your own validation material. This may be useful when working in OfflineMode, where the signer has no access to the validation sources, or where the validation material has already been collected.
  • TrustedCertificates lets you provide a list of trust anchors, either as a complement to the system's or as an alternative to it.
  • BlockedCertificates lets you provide a list of blocked/distrusted certificates. Any CA certificate contained in it will be deemed untrusted/invalid.

The following parameters are not directly related to chain validation, but may have an implicit effect on it.

  • Proxy, SocketSettings, and TLSSettings let you tune up the connectivity and TLS options in accordance with local preferences.
  • TLSClientChain lets you provide the client certificate and its chain for TLS client authentication.
  • Subscribe to TLSCertValidate to validate any TLS certificates of the services involved in chain validation.

The results of the chain validation procedure, upon its completion, are published in the following properties:

  • ChainValidationResult contains the primary result of the chain validation routine: valid, valid but untrusted, invalid, or undefined.
  • ChainValidationDetails provides the details of the factors that contributed to the chain validation result, such as an outdated certificate, a missing CRL, or a missing CA certificate.
  • ValidationLog contains the detailed chain validation log. The log can often be very helpful in nailing down various validation issues.

Property List


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

AttachedFilesProvides details of all attached files found in the PDF document.
AutoValidateSignaturesSpecifies whether PDFSigner 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.
CheckTrustedListsSpecifies whether the class should attempt to validate chain trust via a known Trusted List.
CRLsA collection of certificate revocation lists embedded into the signature by the signer.
DecryptionCertificateA decryption certificate.
DocumentInfoContains information about the document properties.
EmptyFieldIndexSpecifies the index of the empty signature field to sign.
ExternalCryptoProvides access to external signing and DC parameters.
FIPSModeReserved.
IgnoreChainValidationErrorsMakes the class tolerant to chain validation errors.
InputBytesUse this property to pass the input to class in byte array form.
InputFileThe PDF file to be signed or updated.
InputStreamA stream containing the PDF document to be signed or updated.
KnownCertificatesAdditional certificates for chain validation.
KnownCRLsAdditional CRLs for chain validation.
KnownOCSPsAdditional OCSP responses for chain validation.
NewSignatureProvides access to new signature properties.
OCSPsA collection of OCSP responses embedded into the signature.
OfflineModeSwitches the class to offline mode.
OutputBytesUse this property to read the output the class 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 and empty fields found in the PDF document.
SigningCertificateThe certificate to be used for signing.
SigningChainThe signing certificate chain.
SocketSettingsManages network connection settings.
TimestampsContains a collection of timestamps for the processed document.
TimestampServerThe address of the timestamping server.
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.
WidgetProvides access to signature widget properties.

Method List


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

AddWidgetCustomDataAdds a custom data to the signature widget.
AddWidgetTextAdds a text block to the signature widget.
AddWidgetTextExAdds a text block to the signature widget.
AttachBytesAdds an attachment to the PDF document.
AttachFileAdds an attachment to the PDF document.
AttachStreamAdds an attachment to the PDF document.
CloseCloses an opened document.
ConfigSets or retrieves a configuration setting.
DoActionPerforms an additional action.
ExtractAsyncDataExtracts user data from the DC signing service response.
GetAttachedBytesSaves a PDF attachment to a byte array.
GetAttachedFileSaves a PDF attachment to a file.
GetAttachedStreamSaves a PDF attachment to a stream.
OpenOpens a document for signing or updating.
ResetResets the class settings.
RevalidateRevalidates a signature in accordance with current settings.
SelectInfoSelect signature information for a specific entity.
SignSigns a PDF document.
SignAsyncBeginInitiates the asynchronous signing operation.
SignAsyncEndCompletes the asynchronous signing operation.
SignExternalSigns the document using an external signing facility.
UpdateUpdates a signature.

Event List


The following is the full list of the events fired by the class 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.
ExternalDecryptHandles remote or external decryption.
ExternalSignHandles remote or external signing initiated by the SignExternal method or other source.
NotificationThis event notifies the application about an underlying control flow event.
PreRenderWidgetFires when a signature widget is ready to be written to the document.
SignatureFoundSignifies the start of signature validation.
SignatureValidatedMarks the completion of the signature validation routine.
TimestampFoundSignifies the start of a timestamp validation routine.
TimestampRequestFires when the class is ready to request a timestamp from an external TSA.
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 class with short descriptions. Click on the links for further details.

AddOutputIntentsSpecifies output intents to be added to the document.
AlternateNameTBD.
AssemblyOptionsSpecifies the assembly options.
AsyncDocumentIDSpecifies the document ID for SignAsyncEnd() call.
AutoCollectRevocationInfoWhether revocation info should be collected automatically.
AutoReshapeArabicSymbolsSpecifies whether to auto-reshape Arabic symbols.
AutoReverseRTLTextSpecifies whether to auto reverse RTL text.
AutoRotateSignatureSpecifies whether to auto-rotate the signature widget.
BackgroundImageBitsPerComponentSpecifies the number of bits per color class.
BackgroundImageColorSpaceSpecifies the background image color space.
BackgroundImageInterpolateSpecifies the background image interpolation flag.
BackgroundMaskImageBitsPerComponentTBD.
BackgroundMaskImageColorSpaceTBD.
BackgroundMaskImageInterpolateTBD.
BackgroundPositionTBD.
BuildApplicationNameSpecifies the application name used to create the signature.
BuildApplicationVersionSpecifies the application version used to create the signature.
BuildPropertiesSpecifies the build properties of the signature.
CachedCRLOverlapTimeSpecifies the time period before a cached CRL's NextUpdate when it is considered stale and must be refreshed.
CachedOCSPResponseOverlapTimeSpecifies the time period before a cached OCSP Response's NextUpdate when it is considered stale and must be refreshed.
ChainCurrentCACertReturns the current CA certificate.
ChainCurrentCertReturns the certificate that is currently being validated.
ChainCurrentCRLReturns the current CRL.
ChainCurrentCRLSizeReturns the size of the current CRL.
ChainCurrentOCSPReturns the current OCSP response.
ChainCurrentOCSPSignerReturns the signer of the current OCSP object.
ChainInterimDetailsReturns the current interim validation details.
ChainInterimResultReturns the current interim validation result.
CheckValidityPeriodForTrustedWhether to check validity period for trusted certificates.
CollectRevInfoForTimestampsWhether revocation info for timestamps should be collected automatically.
CommitmentsTBD.
ConfigPreferLegacyLevelsIndicates whether legacy signature levels should be preferred.
CustomSignedAttributesTBD.
CustomTextCountThe number of custom text blocks on the signature widget.
CustomTextFontResourceName[Index]The font resource name to use for the custom text block.
CustomTextFontSizeX[Index]The horizontal font size scale.
CustomTextFontSizeY[Index]The vertical font size scale.
CustomTextText[Index]A text to show on a custom signature widget text block.
CustomTextX[Index]The horizontal offset of the text block.
CustomTextY[Index]The vertical offset of the text block.
CustomTrustedListsSpecifies the custom TrustedLists.
CustomTSLsSpecifies the custom TrustedLists.
CustomUnsignedAttributesTBD.
DateFontSizeThe font size of the date/time text on the signature widget.
DeepValidationWhether a complete validation should be performed.
DislikeOpenEndedOCSPsTells the class to discourage OCSP responses without an explicit NextUpdate parameter.
DocumentVersionThe document version from the PDF document header.
DTSAccuracyTBD.
DTSSerialNumberTBD.
DTSTimeTBD.
DTSTSANameTBD.
EmptyFullFieldNameSpecifies the full name of the empty signature field to sign.
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.
EnableOldSignaturesEnables support for prehistoric adbe.x509.sha1 signatures.
EncryptionHandlerNameSpecifies the custom security handler PDF-name.
ExtensionIdentifierModeSpecifies the extension identifier mode.
ExtraSpaceAllows for the allocation of extra zero character space in the document behind the signature.
FontPathsSpecifies font search paths.
ForceCompleteChainValidationWhether to check the 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.
IgnoreChainValidationErrorsWhether to ignore any certificate chain validation issues.
IgnoreOCSPNoCheckExtensionWhether the OCSP NoCheck extension should be ignored.
IgnoreSystemTrustWhether trusted Windows Certificate Stores should be treated as trusted.
IgnoreTimestampChainValidityForLevelDetectionSpecify whether timestamp chain validity should be ignored during signature level detection.
IgnoreTimestampFailureWhether to ignore timestamping failures during signing.
ImplicitlyTrustSelfSignedCertificatesWhether to trust self-signed certificates.
IncludeKnownRevInfoToSignatureWhether to include custom revocation info into the signature.
IncludeKnownRevocationInfoToSignatureWhether to include custom revocation info into the signature.
IncludeRevocationInfoWhether to include custom revocation info into the signature.
IncludeRevocationInfoToAdbeAttributeWhether to save revocation info in PDF-compliant form.
LastSignatureWidgetSpecifies that it is the last signature widget to be added.
LockedTBD.
LockedContentsTBD.
MappingNameTBD.
MDPHashAlgorithmSpecifies the MDP hash algorithm.
NewCustomSignedAttributesTBD.
NewCustomUnsignedAttributesTBD.
PAdESOptionsSpecifies the PAdES options.
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.
PolicyDescriptionsignature policy description.
PolicyExplicitTextThe explicit text of the user notice.
PolicyUNNumbersThe noticeNumbers part of the NoticeReference CAdES attribute.
PolicyUNOrganizationThe organization part of the NoticeReference qualifier.
PredefinedSignatureSizeUser-defined size of the signature.
ProductionPlaceIdentifies the place of the signature production.
PromoteLongOCSPResponsesWhether long OCSP responses are requested.
PSSUsedWhether to use RSASSA-PSS algorithm.
RC4KeyBitsSpecifies the number of key bits used for the RC4 algorithm.
ReassembleModeSpecifies the document reassemble mode.
SchemeParamsThe algorithm scheme parameters to employ.
SectionTextFontSizeThe font size of general text on the signature widget.
SectionTitleFontSizeThe font size of the section title on the signature widget.
SignatureOptionsSpecifies the signature options.
SignatureSizeEstimationStrategyWhich mechanism to use to estimate the size of a PAdES signature.
SigPolicyDescriptionsignature policy description.
SigPolicyExplicitTextThe explicit text of the user notice.
SigPolicyHashThe EPES policy hash.
SigPolicyHashAlgorithmThe hash algorithm that was used to generate the EPES policy hash.
SigPolicyIDThe EPES policy ID.
SigPolicyNoticeNumbersThe noticeNumbers part of the NoticeReference CAdES attribute.
SigPolicyNoticeOrganizationThe organization part of the NoticeReference qualifier.
SigPolicyURIThe EPES policy URI.
TempPathPath for storing temporary files.
TextObjEncodingThe encoding to apply to string objects stored with the signature.
TimestampResponseA base16-encoded timestamp response received from a TSA.
TitleFontSizeThe font size of the main title on the signature widget.
TLSChainValidationDetailsContains the advanced details of the TLS server certificate validation.
TLSChainValidationResultContains the result of the TLS server certificate validation.
TLSClientAuthRequestedIndicates whether the TLS server requests client authentication.
TLSValidationLogContains the log of the TLS server certificate validation.
TolerateMinorChainIssuesWhether to tolerate minor chain issues.
TransparentColorTBD.
TransparentColorDeltaTBD.
TransparentColorXTBD.
TransparentColorYTBD.
TspAttemptCountSpecifies the number of timestamping request attempts.
TspHashAlgorithmSets a specific hash algorithm for use with the timestamping service.
TspReqPolicySets a request policy ID to include in the timestamping request.
UpdateKindAdjusts the scope of modifications that are made to the signature with the Update method.
UseDefaultTrustedListsEnables or disables the use of the default TrustedLists.
UseDefaultTSLsEnables or disables the use of the default TrustedLists.
UseLegacyVisualStyleSpecifies whether to use the legacy signature visual style.
UseMicrosoftCTLEnables or disables the automatic use of the Microsoft online certificate trust list.
UsePSSWhether to use RSASSA-PSS algorithm.
UseSystemCertificatesEnables or disables the use of the system certificates.
UseValidationCacheEnables or disable the use of the product-wide certificate chain validation cache.
UseValidatorSettingsForTLSValidationWhether to employ the primary chain validator setup for auxiliary TLS chain validations.
WidgetHeightSpecifies the height of the signature widget.
WidgetOffsetXSpecifies the signature widget offset from the left-hand page border.
WidgetOffsetYSpecifies the signature widget offset from the bottom page border.
WidgetWidthSpecifies the width of the signature widget.
XMPMetadataContentThe XMP metadata content.
ASN1UseGlobalTagCacheControls whether ASN.1 module should use a global object cache.
AssignSystemSmartCardPinsSpecifies whether CSP-level PINs should be assigned to CNG keys.
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 class.
DefDeriveKeyIterationsSpecifies the default key derivation algorithm iteration count.
DNSLocalSuffixThe suffix to assign for TLD names.
EnableClientSideSSLFFDHEEnables or disables finite field DHE key exchange support in TLS clients.
GlobalCookiesGets or sets global cookies for all the HTTP transports.
HardwareCryptoUsePolicyThe hardware crypto usage policy.
HttpUserAgentSpecifies the user agent name to be used by all HTTP clients.
HttpVersionThe HTTP version to use in any inner HTTP client classes created.
IgnoreExpiredMSCTLSigningCertWhether to tolerate the expired Windows Update signing certificate.
ListDelimiterThe delimiter character for multi-element lists.
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.
OldClientSideRSAFallbackSpecifies whether the SSH client should use a SHA1 fallback.
PKICacheSpecifies which PKI elements (certificates, CRLs, OCSP responses) should be cached.
PKICachePathSpecifies the file system path where cached PKI data is stored.
ProductVersionReturns the version of the SecureBlackbox library.
ServerSSLDHKeyLengthSets the size of the TLS DHE key exchange group.
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.
UseCRLObjectCachingSpecifies whether reuse of loaded CRL objects is enabled.
UseInternalRandomSwitches between SecureBlackbox-own and platform PRNGs.
UseLegacyAdESValidationEnables legacy AdES validation mode.
UseOCSPResponseObjectCachingSpecifies whether reuse of loaded OCSP response objects is enabled.
UseOwnDNSResolverSpecifies whether the client classes should use own DNS resolver.
UseSharedSystemStoragesSpecifies whether the validation engine should use a global per-process copy of the system certificate stores.
UseSystemNativeSizeCalculationAn internal CryptoAPI access tweak.
UseSystemOAEPAndPSSEnforces or disables the use of system-driven RSA OAEP and PSS computations.
UseSystemRandomEnables or disables the use of the OS PRNG.
XMLRDNDescriptorName[OID]Defines an OID mapping to descriptor names for the certificate's IssuerRDN or SubjectRDN.
XMLRDNDescriptorPriority[OID]Specifies the priority of descriptor names associated with a specific OID.
XMLRDNDescriptorReverseOrderSpecifies whether to reverse the order of descriptors in RDN.
XMLRDNDescriptorSeparatorSpecifies the separator used between descriptors in RDN.

AttachedFiles Property (PDFSigner Class)

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

Syntax

public MailAttachmentList getAttachedFiles();

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 (PDFSigner Class)

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

Syntax

public boolean isAutoValidateSignatures();
public void setAutoValidateSignatures(boolean autoValidateSignatures);

Default Value

False

Remarks

This setting is switched off by default to speed up document processing. Even if the document is loaded with this property set to false, you can validate the signatures manually on a later stage using the Revalidate method.

BlockedCertificates Property (PDFSigner Class)

The certificates that must be rejected as trust anchors.

Syntax

public CertificateList getBlockedCertificates();
public void setBlockedCertificates(CertificateList blockedCertificates);

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 (PDFSigner Class)

A collection of certificates included in the electronic signature.

Syntax

public CertificateList getCertificates();

Remarks

This property includes a collection of certificates of the currently selected info.

This collection is indexed from 0 to size -1.

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

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

CheckTrustedLists Property (PDFSigner Class)

Specifies whether the class should attempt to validate chain trust via a known Trusted List.

Syntax

public boolean isCheckTrustedLists();
public void setCheckTrustedLists(boolean checkTrustedLists);

Default Value

False

Remarks

Set this property to true to enable the component to validate chain trust against an internal list of known Trusted Lists (such as EUTL).

CRLs Property (PDFSigner Class)

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

Syntax

public CRLList getCRLs();

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 (PDFSigner Class)

A decryption certificate.

Syntax

public Certificate getDecryptionCertificate();
public void setDecryptionCertificate(Certificate decryptionCertificate);

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 (PDFSigner Class)

Contains information about the document properties.

Syntax

public PDFDocumentInfo getDocumentInfo();

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.

EmptyFieldIndex Property (PDFSigner Class)

Specifies the index of the empty signature field to sign.

Syntax

public int getEmptyFieldIndex();
public void setEmptyFieldIndex(int emptyFieldIndex);

Default Value

-1

Remarks

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

ExternalCrypto Property (PDFSigner Class)

Provides access to external signing and DC parameters.

Syntax

public ExternalCrypto getExternalCrypto();

Remarks

Use this property to tune-up remote cryptography settings. SecureBlackbox supports two independent types of external cryptography: synchronous (based on the ExternalSign event) and asynchronous (based on the DC protocol and the DCAuth signing component).

This property is read-only.

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

FIPSMode Property (PDFSigner Class)

Reserved.

Syntax

public boolean isFIPSMode();
public void setFIPSMode(boolean FIPSMode);

Default Value

False

Remarks

This property is reserved for future use.

IgnoreChainValidationErrors Property (PDFSigner Class)

Makes the class tolerant to chain validation errors.

Syntax

public boolean isIgnoreChainValidationErrors();
public void setIgnoreChainValidationErrors(boolean ignoreChainValidationErrors);

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 (PDFSigner Class)

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

Syntax

public byte[] getInputBytes();
public void setInputBytes(byte[] inputBytes);

Remarks

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

This property is not available at design time.

InputFile Property (PDFSigner Class)

The PDF file to be signed or updated.

Syntax

public String getInputFile();
public void setInputFile(String inputFile);

Default Value

""

Remarks

Use this property to provide a path to the PDF document to be signed or updated, or to the pre-signed copy expected by SignAsyncEnd.

InputStream Property (PDFSigner Class)

A stream containing the PDF document to be signed or updated.

Syntax

public java.io.InputStream getInputStream();
public void setInputStream(java.io.InputStream inputStream);

Default Value

null

Remarks

Use this property to provide the PDF document to be signed or updated, or the pre-signed copy expected by SignAsyncEnd.

This property is not available at design time.

KnownCertificates Property (PDFSigner Class)

Additional certificates for chain validation.

Syntax

public CertificateList getKnownCertificates();
public void setKnownCertificates(CertificateList knownCertificates);

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 class 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 (PDFSigner Class)

Additional CRLs for chain validation.

Syntax

public CRLList getKnownCRLs();
public void setKnownCRLs(CRLList knownCRLs);

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 (PDFSigner Class)

Additional OCSP responses for chain validation.

Syntax

public OCSPResponseList getKnownOCSPs();
public void setKnownOCSPs(OCSPResponseList knownOCSPs);

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.

NewSignature Property (PDFSigner Class)

Provides access to new signature properties.

Syntax

public PDFSignature getNewSignature();

Remarks

Use this property to tune-up signature properties. Use the Widget object to tune up visual parameters of the signature widget.

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

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

OCSPs Property (PDFSigner Class)

A collection of OCSP responses embedded into the signature.

Syntax

public OCSPResponseList getOCSPs();

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 (PDFSigner Class)

Switches the class to offline mode.

Syntax

public boolean isOfflineMode();
public void setOfflineMode(boolean offlineMode);

Default Value

False

Remarks

When working in offline mode, the class 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 (PDFSigner Class)

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

Syntax

public byte[] getOutputBytes();

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 (PDFSigner Class)

The file to save the signed or updated document to.

Syntax

public String getOutputFile();
public void setOutputFile(String outputFile);

Default Value

""

Remarks

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

OutputStream Property (PDFSigner Class)

The stream to write the signed document to.

Syntax

public java.io.OutputStream getOutputStream();
public void setOutputStream(java.io.OutputStream outputStream);

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 (PDFSigner Class)

A list of pages contained in the document.

Syntax

public PDFPageList getPages();

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 (PDFSigner Class)

The decryption password.

Syntax

public String getPassword();
public void setPassword(String password);

Default Value

""

Remarks

Use this property to provide the decryption password.

Profile Property (PDFSigner Class)

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

Syntax

public String getProfile();
public void setProfile(String profile);

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.

Supported profiles:

"BR.AD_RB_v1_0"Brazilian signature with Basic Reference (AD-RB) version 1.0
"BR.AD_RB_v1_1"Brazilian signature with Basic Reference (AD-RB) version 1.1
"BR.AD_RT_v1_0"Brazilian signature with Time Reference (AD-RT) version 1.0
"BR.AD_RT_v1_1"Brazilian signature with Time Reference (AD-RT) version 1.1
"BR.AD_RC_v1_1"Brazilian signature with Complete References (AD-RC) version 1.1
"BR.AD_RC_v1_2"Brazilian signature with Complete References (AD-RC) version 1.2
"BR.AD_RA_v1_1"Brazilian signature with References for Archiving (AD-RA) version 1.1
"BR.AD_RA_v1_2"Brazilian signature with References for Archiving (AD-RA) version 1.2

Proxy Property (PDFSigner Class)

The proxy server settings.

Syntax

public ProxySettings getProxy();

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 (PDFSigner Class)

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

Syntax

public int getRevocationCheck();
public void setRevocationCheck(int revocationCheck);

Enumerated values:
  public final static int crcNone = 0;
  public final static int crcAuto = 1;
  public final static int crcAllCRL = 2;
  public final static int crcAllOCSP = 3;
  public final static int crcAllCRLAndOCSP = 4;
  public final static int crcAnyCRL = 5;
  public final static int crcAnyOCSP = 6;
  public final static int crcAnyCRLOrOCSP = 7;
  public final static int crcAnyOCSPOrCRL = 8;

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 (PDFSigner Class)

Provides details of all signatures and empty fields found in the PDF document.

Syntax

public PDFSignatureList getSignatures();

Remarks

Use this property to get the details of all the signatures and empty signature fields identified in the document.

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

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

SigningCertificate Property (PDFSigner Class)

The certificate to be used for signing.

Syntax

public Certificate getSigningCertificate();
public void setSigningCertificate(Certificate signingCertificate);

Remarks

Use this property to specify the certificate that shall be used for signing the data. Note that this certificate should have a private key associated with it. Use SigningChain to supply the rest of the certificate chain for inclusion into the signature.

This property is not available at design time.

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

SigningChain Property (PDFSigner Class)

The signing certificate chain.

Syntax

public CertificateList getSigningChain();
public void setSigningChain(CertificateList signingChain);

Remarks

Use this property to provide the chain for the signing certificate. Use the SigningCertificate property, if it is available, to provide the signing certificate itself.

This property is not available at design time.

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

SocketSettings Property (PDFSigner Class)

Manages network connection settings.

Syntax

public SocketSettings getSocketSettings();

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 (PDFSigner Class)

Contains a collection of timestamps for the processed document.

Syntax

public TimestampInfoList getTimestamps();

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.

TimestampServer Property (PDFSigner Class)

The address of the timestamping server.

Syntax

public String getTimestampServer();
public void setTimestampServer(String timestampServer);

Default Value

""

Remarks

Use this property to provide the address of the Time Stamping Authority (TSA) server to be used for timestamping the signature.

SecureBlackbox supports RFC3161-compliant timestamping servers, available via HTTP or HTTPS.

If your timestamping service enforces credential-based user authentication (basic or digest), you can provide the credentials in the same URL:

http://user:password@timestamp.server.com/TsaService

For TSAs using certificate-based TLS authentication, provide the client certificate via the TLSClientChain property.

If this property is left empty, no timestamp will be added to the signature.

Starting from summer 2021 update (Vol. 2), the virtual timestamping service is supported, which allows you to intervene in the timestamping routine and provide your own handling for the TSA exchange. This may be handy if the service that you are requesting timestamps from uses a non-standard TSP protocol or requires special authentication option.

To employ the virtual service, assign an URI of the following format to this property:

virtual://localhost?hashonly=true&includecerts=true&reqpolicy=1.2.3.4.5&halg=SHA256&ignorenonce=true

Subscribe to Notification event to get notified about the virtualized timestamping event. The EventID of the timestamping event is TimestampRequest. Inside the event handler, read the base16-encoded request from the EventParam parameter and forward it to the timestamping authority. Upon receiving the response, pass it back to the component, encoded in base16, via the TimestampResponse config property:

component.Config("TimestampResponse=308208ab...");

Note that all the exchange with your custom TSA should take place within the same invocation of the Notification event.

The hashonly parameter of the virtual URI tells the component to only return the timestamp message imprint via the EventParam parameter. If set to false, EventParam will contain the complete RFC3161 timestamping request.

The includecerts parameter specifies that the requestCertificates parameter of the timestamping request should be set to true.

The reqpolicy parameter lets you specify the request policy, and the halg parameter specifies the hash algorithm to use for timestamping.

The ignorenonce parameter allows you to switch off client nonce verification to enable compatibility with TSA services that do not support nonce mirroring.

All the parameters are optional.

TLSClientChain Property (PDFSigner Class)

The TLS client certificate chain.

Syntax

public CertificateList getTLSClientChain();
public void setTLSClientChain(CertificateList TLSClientChain);

Remarks

Assign a certificate chain to this property to enable TLS client authentication in the class. 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 (PDFSigner Class)

The TLS server's certificate chain.

Syntax

public CertificateList getTLSServerChain();

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 (PDFSigner Class)

Manages TLS layer settings.

Syntax

public TLSSettings getTLSSettings();

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 (PDFSigner Class)

A list of trusted certificates for chain validation.

Syntax

public CertificateList getTrustedCertificates();
public void setTrustedCertificates(CertificateList trustedCertificates);

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 (PDFSigner Class)

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

Syntax

public String getValidationMoment();
public void setValidationMoment(String validationMoment);

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.

Widget Property (PDFSigner Class)

Provides access to signature widget properties.

Syntax

public PDFWidget getWidget();

Remarks

Use this property to adjust the signature widget appearance parameters, such as background or texts.

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

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

AddWidgetCustomData Method (PDFSigner Class)

Adds a custom data to the signature widget.

Syntax

public int addWidgetCustomData(String customData);

Remarks

Use this method to quickly add a custom data block that contains PDF graphics operators to your signature widget.

The method returns the index of the new custom text in the CustomText collection (accessed via Config).

AddWidgetText Method (PDFSigner Class)

Adds a text block to the signature widget.

Syntax

public int addWidgetText(String text, int X, int Y, String fontSize);

Remarks

Use this method to quickly add a custom text block to your signature widget.

The method returns the index of the new custom text in the CustomText collection (accessed via Config).

AddWidgetTextEx Method (PDFSigner Class)

Adds a text block to the signature widget.

Syntax

public int addWidgetTextEx(String text, String settings);

Remarks

Use this method to add a custom text block to your signature widget.

Text represents the text string to add. Settings contains a list of parameters in the form of PARAM1=VALUE1;PARAM2=VALUE2;... or in JSON format.

The following parameters are supported:

"X"The text offset from the left-hand signature widget border.
"Y"The text offset from the bottom signature widget border.
"FontSize"The font size of the text (single value, or two values separated with a space character that represent horizontal and vertical font sizes).
"FontSizeX"The horizontal font size of the text.
"FontSizeY"The vertical font size of the text.
"FontName"The font name or TrueType filename. It supports the same values as the Widget.FontName property.

The method returns the index of the new custom text in the CustomText collection (accessed via Config).

AttachBytes Method (PDFSigner Class)

Adds an attachment to the PDF document.

Syntax

public void attachBytes(byte[] data, String objName, String fileName, String description, String subType, String CDate, String MDate);

Remarks

Use this method to add an attachment (embedded file) to a PDF document.

AttachFile Method (PDFSigner Class)

Adds an attachment to the PDF document.

Syntax

public void attachFile(String path, String objName, String fileName, String description, String subType, String CDate, String MDate);

Remarks

Use this method to add an attachment (embedded file) to a PDF document.

AttachStream Method (PDFSigner Class)

Adds an attachment to the PDF document.

Syntax

public void attachStream(java.io.InputStream stream, String objName, String fileName, String description, String subType, String CDate, String MDate);

Remarks

Use this method to add an attachment (embedded file) to a PDF document.

Close Method (PDFSigner Class)

Closes an opened document.

Syntax

public void close(boolean saveChanges);

Remarks

Use this method to close a previously opened document. Set SaveChanges to true to apply any changes made.

Config Method (PDFSigner Class)

Sets or retrieves a configuration setting.

Syntax

public String config(String configurationString);

Remarks

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

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, 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 (PDFSigner Class)

Performs an additional action.

Syntax

public String doAction(String actionID, String actionParams);

Remarks

DoAction is a generic method available in every class. 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;....

Common ActionIDs:

ActionParametersReturned valueDescription
ResetTrustedListCachenonenoneClears the cached list of trusted lists.
ResetCertificateCachenonenoneClears the cached certificates.
ResetCRLCachenonenoneClears the cached CRLs.
ResetOCSPResponseCachenonenoneClears the cached OCSP responses.

The PDFSigner class ActionIDs:

ActionDescription
"AddImage"Adds an image to the foreground layer.
"GetTextWidth"Calculates the width of the given text for a specific font.
"GetSystemFontNames"Gets the list of system font names.
"IsAllGlyphsAvailable"Checks if all glyphs from the given text are available for a specific font.

Use "AddImage" action to add an image to the foreground layer. The following parameters are supported:

"ImageData"The image data in hex or base64 encoding. To use base64 encoding prepend an encoded data with "base64:" prefix.
"ImageWidth"The width of the image in pixels.
"ImageHeight"The height of the image in pixels.
"ImageType"The type of the image contained in ImageData parameter. Supported values: "jpeg", "jpeg2000", "custom".
"ImageBitsPerComponent"The number of bits per color space component for the image.
"ImageColorSpace"The image color space. Supported values: "RGB", "CMYK" and "Gray".
"ImageInterpolate"Specifies whether an image interpolation shall be performed by a conforming reader.
"X"The image offset from the left-hand signature widget border.
"Y"The image offset from the bottom signature widget border.
"Width"The width of the image in points.
"Height"The height of the image in points.

Parameters ImageData, ImageWidth, ImageHeight, ImageType, X, Y, Width and Height are required.

Sample code to add a JPEG image of size 100px x 100px and place it in position (10, 10) with an image size (30, 30): Signer.DoAction("AddImage", "ImageData=" + Utils.HexEncode(BinaryImageData) + "; ImageWidth=100; ImageHeight=100; ImageType=jpeg; X=10; Y=10; Width=30; Height=30");

Use "GetTextWidth" action to calculate the width of the given text for a specific font. The following parameters are supported:

"Text"Represent the text string for which you want to determine the width.
"FontName"The font name or TrueType filename. It supports the same values as Widget.FontName property.
"FontSize"The horizontal font size of the text. If omitted, the width of the text returned in units, and the width for a specific font size could be calculated by the formula: (Width / 1000) * FontSize

Sample code: Signer.DoAction("GetTextWidth", "Text=Lorem Ipsum; FontSize=10; FontName=Arial Bold Italic");

Use "GetSystemFontNames" action to get a CRLF-separated list of system TrueType font names that the component supports.

Use "IsAllGlyphsAvailable" action to check if all glyphs that correspond to the given text are available for a specific font. The following parameters are required:

"Text"Represent the text string that you want to check.
"FontName"The font name or TrueType filename. It supports the same values as Widget.FontName property.

For standard Type 1 fonts this action always returns a "true" value.

ExtractAsyncData Method (PDFSigner Class)

Extracts user data from the DC signing service response.

Syntax

public String extractAsyncData(String asyncReply);

Remarks

Call this method before finalizing the asynchronous signing process to extract the data passed to the ExternalCrypto.Data property on the pre-signing stage.

The Data parameter can be used to pass some state or document identifier along with the signing request from the pre-signing to the completion async stage.

GetAttachedBytes Method (PDFSigner Class)

Saves a PDF attachment to a byte array.

Syntax

public byte[] getAttachedBytes(int index);

Remarks

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

GetAttachedFile Method (PDFSigner Class)

Saves a PDF attachment to a file.

Syntax

public void getAttachedFile(int index, String path);

Remarks

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

GetAttachedStream Method (PDFSigner Class)

Saves a PDF attachment to a stream.

Syntax

public void getAttachedStream(int index, java.io.OutputStream stream);

Remarks

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

Open Method (PDFSigner Class)

Opens a document for signing or updating.

Syntax

public void open();

Remarks

Use this method to open a document for signing or updating. When finished, call Close to complete or discard the operation.

Reset Method (PDFSigner Class)

Resets the class settings.

Syntax

public void reset();

Remarks

Reset is a generic method available in every class.

Revalidate Method (PDFSigner Class)

Revalidates a signature in accordance with current settings.

Syntax

public void revalidate(String sigLabel);

Remarks

Use this method to re-validate a signature in the opened PDF document.

SelectInfo Method (PDFSigner Class)

Select signature information for a specific entity.

Syntax

public void selectInfo(String entityLabel, int infoType, boolean clearSelection);

Remarks

Use this method to select (or filter) signature-related information for a specific signature element.

Provide the unique label of the entity that you are interested in via the EntityLabel parameter. Use one of the following filters, or their combination, to specify what information you are interested in:

sitEntity1Select the current entity

sitParentEntity2Select the parent entity of the current entity

sitTimestamps4Select all timestamps covering the current entity

sitSignatures8Select all signatures covering the current entity

sitSigningChain16Select the signing chain of the current entity

sitEmbeddedCertificates256Select all certificates embedded in the current entity

sitEmbeddedCRLs512Select all CRLs embedded in the current entity

sitEmbeddedOCSPs1024Select all OCSP responses embedded in the current entity

sitEmbeddedRevInfo1792Select the whole pack of embedded revocation information (certificates, CRLs and OCSPs)

sitUsedCertificates4096Select all the certificates used to validate this entity's chain

sitUsedCRLs8192Select all the CRLs used to validate this entity's chain

sitUsedOCSPs16384Select all the OCSP responses used to validate this entity's chain

sitUsedRevInfo28672Select the whole pack of revocation information used to validate this entity's chain (certificates, CRLs, OCSP responses)

sitAttributes65536Select this entity's CMS attributes

sitReferences131072Select this entity's XML references

sitSignedParts262144Select this entity's signed parts

Following the call, the relevant pieces of information will be copied to the respective component properties (Certificates, CRLs, OCSPs). Note that you can accumulate information in the properties by making repeated calls to SelectInfo and keeping ClearSelection set to false.

This method is useful if you would like to read/display detailed information about a particular signature or timestamp.

Sign Method (PDFSigner Class)

Signs a PDF document.

Syntax

public void sign();

Remarks

Call this method to sign the document referenced by the InputFile (or InputStream) property. The document will be signed with SigningCertificate as configured in NewSignature, and saved in OutputFile (OutputStream).

Use TrustedCertificates, KnownCertificates, RevocationCheck, OfflineMode and other properties of the class to adjust chain validation parameters. After the signing, the chain validation log will be available in the ValidationLog property.

SignAsyncBegin Method (PDFSigner Class)

Initiates the asynchronous signing operation.

Syntax

public String signAsyncBegin();

Remarks

When using the DC framework, call this method to initiate the asynchronous signing process. Upon completion, a pre-signed copy of the document will be saved in OutputFile (or OutputStream). Keep the pre-signed copy somewhere local, and pass the returned string ('the request state') to the DC processor for handling.

Upon receiving the response state from the DC processor, assign the path to the pre-signed copy to InputFile (or InputStream), and call SignAsyncEnd to finalize the signing.

Note that depending on the signing method and DC configuration used, you may still need to provide the public part of the signing certificate via the SigningCertificate property.

Use the ExternalCrypto.AsyncDocumentID property to supply a unique document ID to include in the request. This is helpful when creating batches of multiple async requests, as it allows you to pass the whole response batch to SignAsyncEnd and expect it to recover the correct response from the batch automatically.

AsyncState is a message of the distributed cryptography (DC) protocol. The DC protocol is based on the exchange of async states between a DC client (an application that wants to sign a PDF, XML, or Office document) and a DC server (an application that controls access to the private key). An async state can carry one or more signing requests, comprised of document hashes, or one or more signatures produced over those hashes.

In a typical scenario you get a client-side async state from the SignAsyncBegin method. This state contains document hashes to be signed on the DC server side. You then send the async state to the DC server (often represented by the DCAuth class), which processes it and produces a matching signature state. The async state produced by the server is then passed to the SignAsyncEnd method.

There are some conditions that should be met when signing PDF documents asynchronously. The advanced PDF signature levels, specifically BES, EPES, and LTV, require that the 'signingCertificate' attribute is included in the signature. This can only be satisfied if either ExternalCrypto is configured to use the asmdPKCS7 method, or the public copy of the signing certificate is provided on the pre-signing stage.

Please note that you will still be able to sign a document with the asmdPKCS1 method and no public copy of the certificate provided (resulting in the omission of the 'signingCertificate' attribute from the signature); however, most modern PDF processors will reject such signatures as invalid or non-compliant.

SignAsyncEnd Method (PDFSigner Class)

Completes the asynchronous signing operation.

Syntax

public void signAsyncEnd(String asyncReply);

Remarks

When using the DC framework, call this method upon receiving the response state from the DC processor to complete the asynchronous signing process.

Before calling this method, assign the path to the pre-signed copy of the document obtained from the prior SignAsyncBegin call to InputFile (or InputStream). The method will embed the signature into the pre-signed document, and save the complete signed document to OutputFile (or OutputStream).

Note that depending on the signing method and DC configuration used, you may still need to provide the public part of the signing certificate via the SigningCertificate property.

Use the ExternalCrypto.AsyncDocumentID parameter to pass a specific document ID if using batched AsyncReply. If used, it should match the value provided on the pre-signing (SignAsyncBegin) stage.

AsyncState is a message of the distributed cryptography (DC) protocol. The DC protocol is based on the exchange of async states between a DC client (an application that wants to sign a PDF, XML, or Office document) and a DC server (an application that controls access to the private key). An async state can carry one or more signing requests, comprised of document hashes, or one or more signatures produced over those hashes.

In a typical scenario you get a client-side async state from the SignAsyncBegin method. This state contains document hashes to be signed on the DC server side. You then send the async state to the DC server (often represented by the DCAuth class), which processes it and produces a matching signature state. The async state produced by the server is then passed to the SignAsyncEnd method.

SignExternal Method (PDFSigner Class)

Signs the document using an external signing facility.

Syntax

public void signExternal();

Remarks

Use this method to create a PDF signature using an external signing facility for the cryptographic computations. SignExternal delegates the low-level signing operation to an external, remote, or custom signing engine. This method is useful if the signature has to be made by a device accessible through a custom or non-standard signing interface.

When all preparations are done and the hash is computed, the class fires the ExternalSign event which allows the hash value to be passed for signing.

Update Method (PDFSigner Class)

Updates a signature.

Syntax

public void update(String sigLabel);

Remarks

PDF signatures may be updated from time to time by embedding newer/missing revocation information. The update approach is typically used to extend the validity of an LTV signature. Set SigLabel to the label of the signature field to update.

Updating is typically accompanied with a document timestamping operation. Set TimestampServer to have the class obtain and embed a document timestamp for you.

Before calling this method, provide the signed document via the InputFile (or InputStream) property. The updated document will be saved to OutputFile (or OutputStream).

ChainElementDownload Event (PDFSigner Class)

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

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void chainElementDownload(PDFSignerChainElementDownloadEvent e) {}
  ...
}

public class PDFSignerChainElementDownloadEvent {
  public int kind;
  public String certRDN;
  public String CACertRDN;
  public String location;
  public int action; //read-write
}

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

cekUnknown0Unknown or unsupported element type

cekCertificate1An X.509 certificate

cekCRL2A CRL

cekOCSP3An OCSP response

ChainElementNeeded Event (PDFSigner Class)

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

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void chainElementNeeded(PDFSignerChainElementNeededEvent e) {}
  ...
}

public class PDFSignerChainElementNeededEvent {
  public int kind;
  public String certRDN;
  public String CACertRDN;
}

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.

cekUnknown0Unknown or unsupported element type

cekCertificate1An X.509 certificate

cekCRL2A CRL

cekOCSP3An OCSP response

ChainValidated Event (PDFSigner Class)

Reports the completion of a certificate chain validation.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void chainValidated(PDFSignerChainValidatedEvent e) {}
  ...
}

public class PDFSignerChainValidatedEvent {
  public int index;
  public String entityLabel;
  public String subjectRDN;
  public int validationResult;
  public int validationDetails;
  public boolean cancel; //read-write
}

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 (PDFSigner Class)

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

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void chainValidationProgress(PDFSignerChainValidationProgressEvent e) {}
  ...
}

public class PDFSignerChainValidationProgressEvent {
  public String eventKind;
  public String certRDN;
  public String CACertRDN;
  public int action; //read-write
}

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 (PDFSigner Class)

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

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void documentLoaded(PDFSignerDocumentLoadedEvent e) {}
  ...
}

public class PDFSignerDocumentLoadedEvent {
  public boolean cancel; //read-write
}

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 (PDFSigner Class)

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

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void encrypted(PDFSignerEncryptedEvent e) {}
  ...
}

public class PDFSignerEncryptedEvent {
  public boolean certUsed;
  public String issuerRDN;
  public byte[] serialNumber;
  public byte[] subjectKeyID;
  public boolean needCredential;
  public boolean skipThis; //read-write
}

Remarks

The class 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 class 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 (PDFSigner Class)

Information about errors during signing/validation.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void error(PDFSignerErrorEvent e) {}
  ...
}

public class PDFSignerErrorEvent {
  public int errorCode;
  public String description;
}

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.

ExternalDecrypt Event (PDFSigner Class)

Handles remote or external decryption.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void externalDecrypt(PDFSignerExternalDecryptEvent e) {}
  ...
}

public class PDFSignerExternalDecryptEvent {
  public String operationId;
  public String algorithm;
  public String pars;
  public String encryptedData;
  public String data; //read-write
}

Remarks

Assign a handler to this event if you need to delegate a low-level decryption operation to an external, remote, or custom decryption engine. The handler receives an encrypted value in the EncryptedData parameter, and is expected to decrypt it and place the decrypted value into the Data parameter.

OperationId provides a comment about the operation and its origin. It depends on the exact class being used, and may be empty. Algorithm specifies the encryption algorithm being used, and Pars contains algorithm-dependent parameters.

The class uses base16 (hex) encoding for the EncryptedData, Data, and Pars parameters. If your decryption engine uses a different input and output encoding, you may need to decode and/or encode the data before and/or after the decryption.

Sample data encoded in base16: a0dee2a0382afbb09120ffa7ccd8a152 - lower case base16 A0DEE2A0382AFBB09120FFA7CCD8A152 - upper case base16

ExternalSign Event (PDFSigner Class)

Handles remote or external signing initiated by the SignExternal method or other source.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void externalSign(PDFSignerExternalSignEvent e) {}
  ...
}

public class PDFSignerExternalSignEvent {
  public String operationId;
  public String hashAlgorithm;
  public String pars;
  public String data;
  public String signedData; //read-write
}

Remarks

Assign a handler to this event if you need to delegate a low-level signing operation to an external, remote, or custom signing engine. Depending on the settings, the handler will receive a hashed or unhashed value to be signed.

The event handler must pass the value of Data to the signer, obtain the signature, and pass it back to the class via the SignedData parameter.

OperationId provides a comment about the operation and its origin. It depends on the exact class being used, and may be empty. HashAlgorithm specifies the hash algorithm being used for the operation, and Pars contains algorithm-dependent parameters.

The class uses base16 (hex) encoding for the Data, SignedData, and Pars parameters. If your signing engine uses a different input and output encoding, you may need to decode and/or encode the data before and/or after the signing.

A sample MD5 hash encoded in base16: a0dee2a0382afbb09120ffa7ccd8a152 - lower case base16 A0DEE2A0382AFBB09120FFA7CCD8A152 - upper case base16

A sample event handler that uses the .NET RSACryptoServiceProvider class may look like the following: signer.OnExternalSign += (s, e) => { var cert = new X509Certificate2("cert.pfx", "", X509KeyStorageFlags.Exportable); var key = (RSACryptoServiceProvider)cert.PrivateKey; var dataToSign = e.Data.FromBase16String(); var signedData = key.SignHash(dataToSign, "2.16.840.1.101.3.4.2.1"); e.SignedData = signedData.ToBase16String(); };

Notification Event (PDFSigner Class)

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

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void notification(PDFSignerNotificationEvent e) {}
  ...
}

public class PDFSignerNotificationEvent {
  public String eventID;
  public String eventParam;
}

Remarks

The class fires this event to let the application know about some event, occurrence, or milestone in the class. 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 class, the exact action it is performing, or the document being processed, one or both may be omitted.

This class can fire this event with the following EventID values:

DocumentLoadedReports the completion of PDF document processing by the component. Use the event handler to access document-related information, such as page number and document file details. The EventParam value passed with this EventID is empty.
BeforeTimestampThis event is fired before a timestamp is requested from the timestamping authority. Use the event handler to modify TSA and HTTP settings.
TimestampErrorThis event is only fired if the class failed to obtain a timestamp from the timestamping authority. The EventParam parameter contains extended error info.
TimestampRequestA timestamp is requested from the custom timestamping authority. This event is only fired if TimestampServer was set to a virtual:// URI. The EventParam parameter contains the TSP request (or the plain hash, depending on the value provided to TimestampServer), in base16, that needs to be sent to the TSA.

Use the event handler to send the request to the TSA. Upon receiving the response, assign it, in base16, to the TimestampResponse configuration property.

BeforeDocumentTimestampThis event is fired before adding document timestamp. Use the event handler to modify signature settings.
SignatureWidgetPrepareAnother copy of the signature widget needs to be configured. Use the event handler to configure individual widgets when creating multi-widget signatures. The Notification event with this event ID will be fired repeatedly until the LastSignatureWidget configuration setting is set to true.

The EventParam value passed with this EventID is empty.

SignaturesLoadedNotifies the application that the component has finished loading signatures.

PreRenderWidget Event (PDFSigner Class)

Fires when a signature widget is ready to be written to the document.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void preRenderWidget(PDFSignerPreRenderWidgetEvent e) {}
  ...
}

public class PDFSignerPreRenderWidgetEvent {
  public boolean addAnother; //read-write
  public boolean resetAnother; //read-write
}

Remarks

The class fires this event when it is ready to insert a new instance of the signature widget to the document. This event is fired repeatedly until the event handler sets the AddAnother parameter to false, allowing your application to create as many copies of the signature widget as required.

You can use this event handler to adjust the look of each widget copy. Set the ResetAnother parameter to true to automatically clean up all the existing widget settings after the current widget is saved. Setting ResetAnother to true will let you start every new widget from scratch. Keeping it set to false would result in every new widget looking the same as the previous one.

SignatureFound Event (PDFSigner Class)

Signifies the start of signature validation.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void signatureFound(PDFSignerSignatureFoundEvent e) {}
  ...
}

public class PDFSignerSignatureFoundEvent {
  public int index;
  public String entityLabel;
  public String issuerRDN;
  public byte[] serialNumber;
  public byte[] subjectKeyID;
  public boolean certFound;
  public boolean validateSignature; //read-write
  public boolean validateChain; //read-write
}

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 class 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 (PDFSigner Class)

Marks the completion of the signature validation routine.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void signatureValidated(PDFSignerSignatureValidatedEvent e) {}
  ...
}

public class PDFSignerSignatureValidatedEvent {
  public int index;
  public String entityLabel;
  public String issuerRDN;
  public byte[] serialNumber;
  public byte[] subjectKeyID;
  public int validationResult;
  public boolean cancel; //read-write
}

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

svtReferenceCorrupted5Reference corrupted (XML-based signatures only)

TimestampFound Event (PDFSigner Class)

Signifies the start of a timestamp validation routine.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void timestampFound(PDFSignerTimestampFoundEvent e) {}
  ...
}

public class PDFSignerTimestampFoundEvent {
  public int index;
  public String entityLabel;
  public String issuerRDN;
  public byte[] serialNumber;
  public byte[] subjectKeyID;
  public boolean certFound;
  public boolean validateTimestamp; //read-write
  public boolean validateChain; //read-write
}

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 class 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.

TimestampRequest Event (PDFSigner Class)

Fires when the class is ready to request a timestamp from an external TSA.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void timestampRequest(PDFSignerTimestampRequestEvent e) {}
  ...
}

public class PDFSignerTimestampRequestEvent {
  public String TSA;
  public String timestampRequest;
  public String timestampResponse; //read-write
  public boolean suppressDefault; //read-write
}

Remarks

Subscribe to this event to intercept timestamp requests. You can use it to override timestamping requests and perform them in your code.

The TSA parameter indicates the timestamping service being used. It matches the value passed to the TimestampServer property. Set the SuppressDefault parameter to true if you would like to stop the built-in TSA request from going ahead. The built-in TSA request is also not performed if the returned TimestampResponse parameter is not empty.

TimestampValidated Event (PDFSigner Class)

Reports the completion of the timestamp validation routine.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void timestampValidated(PDFSignerTimestampValidatedEvent e) {}
  ...
}

public class PDFSignerTimestampValidatedEvent {
  public int index;
  public String entityLabel;
  public String issuerRDN;
  public byte[] serialNumber;
  public byte[] subjectKeyID;
  public String time;
  public int validationResult;
  public int chainValidationResult;
  public int chainValidationDetails;
  public boolean cancel; //read-write
}

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

svtReferenceCorrupted5Reference corrupted (XML-based signatures only)

TLSCertNeeded Event (PDFSigner Class)

Fires when a remote TLS party requests a client certificate.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void TLSCertNeeded(PDFSignerTLSCertNeededEvent e) {}
  ...
}

public class PDFSignerTLSCertNeededEvent {
  public String host;
  public String CANames;
}

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 (PDFSigner Class)

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

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void TLSCertValidate(PDFSignerTLSCertValidateEvent e) {}
  ...
}

public class PDFSignerTLSCertValidateEvent {
  public String serverHost;
  public String serverIP;
  public boolean accept; //read-write
}

Remarks

This event is fired during a TLS handshake. Use the TLSServerChain property to access the certificate chain. In general, classes 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 class, and can be adjusted if needed.

TLSEstablished Event (PDFSigner Class)

Fires when a TLS handshake with Host successfully completes.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void TLSEstablished(PDFSignerTLSEstablishedEvent e) {}
  ...
}

public class PDFSignerTLSEstablishedEvent {
  public String host;
  public String version;
  public String ciphersuite;
  public byte[] connectionId;
  public boolean abort; //read-write
}

Remarks

The class 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 (PDFSigner Class)

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

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void TLSHandshake(PDFSignerTLSHandshakeEvent e) {}
  ...
}

public class PDFSignerTLSHandshakeEvent {
  public String host;
  public boolean abort; //read-write
}

Remarks

The class 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 (PDFSigner Class)

Reports the graceful closure of a TLS connection.

Syntax

public class DefaultPDFSignerEventListener implements PDFSignerEventListener {
  ...
  public void TLSShutdown(PDFSignerTLSShutdownEvent e) {}
  ...
}

public class PDFSignerTLSShutdownEvent {
  public String host;
}

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

Encapsulates an individual X.509 certificate.

Remarks

This type keeps and provides access to X.509 certificate details.

The following fields are available:

Fields

Bytes
byte[] (read-only)

Default Value: ""

Returns the raw certificate data in DER format.

CA
boolean

Default Value: False

Indicates whether the certificate has a CA capability. For the certificate to be considered a CA, it must have its Basic Constraints extension set with the CA indicator enabled.

Set this field when generating a new certificate to have its Basic Constraints extension generated automatically.

CAKeyID
byte[] (read-only)

Default Value: ""

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

Authority Key Identifier is a certificate extension which allows identification of certificates belonging to the same issuer, but with different public keys. It is a de-facto standard to include this extension in all certificates to facilitate chain building.

This setting cannot be set when generating a certificate as it always derives from another certificate property. CertificateManager generates this setting automatically if enough information is available to it: for self-signed certificates, this value is copied from the SubjectKeyID setting, and for lower-level certificates, from the parent certificate's subject key ID extension.

CertType
int (read-only)

Default Value: 0

Returns the type of the entity contained in the Certificate object.

A Certificate object can contain two types of cryptographic objects: a ready-to-use X.509 certificate, or a certificate request ("an unsigned certificate"). Certificate requests can be upgraded to full certificates by signing them with a CA certificate.

Use the CertificateManager class to load or create new certificate and certificate requests objects.

CRLDistributionPoints
String

Default Value: ""

Contains a list of locations of CRL distribution points used to check this certificate's validity. The list is taken from the respective certificate extension.

Use this field when generating a certificate to provide a list of CRL endpoints that should be made part of the new certificate.

The endpoints are provided as a list of CRLF-separated URLs. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the location separator.

Curve
String

Default Value: ""

Specifies the elliptic curve associated with the certificate's public key. This setting only applies to certificates containing EC keys.

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
String (read-only)

Default Value: ""

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

While there is no formal standard defining what a fingerprint is, a SHA1 hash of the certificate's DER-encoded body is typically used.

FriendlyName
String (read-only)

Default Value: ""

Contains an associated alias (friendly name) of the certificate. The friendly name is not a property of a certificate: it is maintained by the certificate media rather than being included in its DER representation. Windows certificate stores are one example of media that does support friendly names.

HashAlgorithm
String

Default Value: ""

Provides means to set the hash algorithm to be used in the subsequent operation on the certificate (such as generation or key signing). It is not a property of a certificate; use SigAlgorithm to find out the hash algorithm that is part of the certificate signature.

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. This is part of a larger set of credentials available via IssuerRDN.

IssuerRDN
String

Default Value: ""

A list of Property=Value pairs that uniquely identify the certificate issuer.

Example: /C=US/O=Nationwide CA/CN=Web Certification Authority

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

Use the KeyBits, Curve, and PublicKeyBytes fields to get more details about the key the certificate contains.

KeyBits
int (read-only)

Default Value: 0

Returns the length of the public key in bits.

This value indicates the length of the principal cryptographic parameter of the key, such as the length of the RSA modulus or ECDSA field. The key data returned by the PublicKeyBytes or PrivateKeyBytes field would typically contain auxiliary values, and therefore be longer.

KeyFingerprint
String (read-only)

Default Value: ""

Returns a SHA1 fingerprint of the public key contained in the certificate.

Note that the key fingerprint is different from the certificate fingerprint accessible via the Fingerprint field. The key fingeprint uniquely identifies the public key, and so can be the same for multiple certificates containing the same key.

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

Set this field before generating the certificate to propagate the key usage flags to the new certificate.

KeyValid
boolean (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 services that can be used to check this certificate's validity in real time, as recorded by the CA.

Set this field before calling the certificate manager's Generate method to propagate it to the new certificate.

The OCSP locations are provided as a list of CRLF-separated URLs. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the location separator.

OCSPNoCheck
boolean

Default Value: False

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

Origin
int (read-only)

Default Value: 0

Returns the location that the certificate was taken or loaded from.

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.

Set this field when generating a certificate to propagate the policies information to the new certificate.

The policies are provided as a list of CRLF-separated entries. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the policy element separator.

PrivateKeyBytes
byte[] (read-only)

Default Value: ""

Returns the certificate's private key in DER-encoded format. It is normal for this field to be empty if the private key is non-exportable, which, for example, is typical for certificates originating from hardware security devices.

PrivateKeyExists
boolean (read-only)

Default Value: False

Indicates whether the certificate has a usable private key associated with it. If it is set to True, the certificate can be used for private key operations, such as signing or decryption.

This field is independent from PrivateKeyBytes, and can be set to True even if the former is empty. This would imply that the private key is non-exportable, but still can be used for cryptographic operations.

PrivateKeyExtractable
boolean (read-only)

Default Value: False

Indicates whether the private key is extractable (exportable).

PublicKeyBytes
byte[] (read-only)

Default Value: ""

Contains the certificate's public key in DER format.

This typically would contain an ASN.1-encoded public key value. The exact format depends on the type of the public key contained in the certificate.

Qualified
boolean (read-only)

Default Value: False

Indicates whether the certificate is qualified.

This property is set to True if the certificate is confirmed by a Trusted List to be qualified.

QualifiedStatements
int

Default Value: 0

Returns a simplified qualified status of the certificate.

Qualifiers
String (read-only)

Default Value: ""

A list of qualifiers.

Contains a comma-separated list of qualifier aliases for the certificate, for example QCP-n-qscd,QCWithSSCD.

SelfSigned
boolean (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.

The serial number is a binary string that uniquely identifies a certificate among others issued by the same CA. According to the X.509 standard, the (issuer, serial number) pair should be globally unique to facilitate chain building.

SigAlgorithm
String (read-only)

Default Value: ""

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

A signature algorithm typically combines hash and public key algorithms together, such as sha256WithRSAEncryption or ecdsa-with-SHA256.

Source
int (read-only)

Default Value: 0

Returns the source (location or disposition) of a cryptographic primitive entity, such as a certificate, CRL, or OCSP response.

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. This is part of a larger set of credentials available via SubjectRDN.

SubjectAlternativeName
String

Default Value: ""

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

Subject alternative names are used to provide additional names that are impractical to store in the main SubjectRDN field. For example, it is often used to store all the domain names that a TLS certificate is authorized to protect.

The alternative names are provided as a list of CRLF-separated entries. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the element separator.

SubjectKeyID
byte[]

Default Value: ""

Contains a unique identifier of the certificate's cryptographic key.

Subject Key Identifier is a certificate extension which allows a specific public key to be associated with a certificate holder. Typically, subject key identifiers of CA certificates are recorded as respective CA key identifiers in the subordinate certificates that they issue, which facilitates chain building.

The SubjectKeyID and CAKeyID fields of self-signed certificates typically contain identical values, as in that specific case, the issuer and the subject are the same entity.

SubjectRDN
String

Default Value: ""

A list of Property=Value pairs that uniquely identify the certificate holder (subject).

Depending on the purpose of the certificate and the policies of the CA that issued it, the values included in the subject record may differ drastically and contain business or personal names, web URLs, email addresses, and other data.

Example: /C=US/O=Oranges and Apples, Inc./OU=Accounts Receivable/1.2.3.4.5=Value with unknown OID/CN=Margaret Watkins.

Valid
boolean (read-only)

Default Value: False

Indicates whether or not the signature over the certificate or the request is valid and matches the public key contained in the CA certificate/request.

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( bytes,  startIndex,  count,  password);

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( certBytes,  certStartIndex,  certCount,  keyBytes,  keyStartIndex,  keyCount,  password);

Loads the X.509 certificate from a memory buffer.

CertBytes is a buffer containing the raw certificate data. CertStartIndex and CertCount specify the starting position and 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( bytes,  startIndex,  count);

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( path,  password);

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( certPath,  keyPath,  password);

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( path);

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

public Certificate( stream);

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

public Certificate( stream,  password);

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( certStream,  keyStream,  password);

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();

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.

The following fields are available:

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

Default Value: ""

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

SigAlgorithm
String

Default Value: "0"

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

Source
int (read-only)

Default Value: 0

Returns the source (location or disposition) of a cryptographic primitive entity, such as a certificate, CRL, or OCSP response.

TBS
byte[] (read-only)

Default Value: ""

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

ThisUpdate
String

Default Value: ""

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

Constructors

public CRL( bytes,  startIndex,  count);

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( location);

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

public CRL( stream);

Creates a CRL object from data contained in a stream.

public CRL();

Creates an empty CRL object.

ExternalCrypto Type

Specifies the parameters of external cryptographic calls.

Remarks

External cryptocalls are used in a Distributed Cryptography (DC) subsystem, which allows the delegation of security operations to the remote agent. For instance, it can be used to compute the signature value on the server, while retaining the client's private key locally.

The following fields are available:

Fields

AsyncDocumentID
String

Default Value: ""

Specifies an optional document ID for SignAsyncBegin() and SignAsyncEnd() calls.

Use this property when working with multi-signature DCAuth requests and responses to uniquely identify documents signed within a larger batch. On the completion stage, this value helps the signing component identify the correct signature in the returned batch of responses.

If using batched requests, make sure to set this property to the same value on both the pre-signing (SignAsyncBegin) and completion (SignAsyncEnd) stages.

CustomParams
String

Default Value: ""

Custom parameters to be passed to the signing service (uninterpreted).

Data
String

Default Value: ""

Additional data to be included in the async state and mirrored back by the requestor.

ExternalHashCalculation
boolean

Default Value: False

Specifies whether the message hash is to be calculated at the external endpoint. Please note that this mode is not supported by the DCAuth class.

If set to true, the class will pass a few kilobytes of to-be-signed data from the document to the OnExternalSign event. This only applies when SignExternal() is called.

HashAlgorithm
String

Default Value: "SHA256"

Specifies the request's signature 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

KeyID
String

Default Value: ""

The ID of the pre-shared key used for DC request authentication.

Asynchronous DCAuth-driven communication requires that parties authenticate each other with a secret pre-shared cryptographic key. This provides an extra protection layer for the protocol and diminishes the risk of the private key becoming abused by foreign parties. Use this property to provide the pre-shared key identifier, and use KeySecret to pass the key itself.

The same KeyID/KeySecret pair should be used on the DCAuth side for the signing requests to be accepted.

Note: The KeyID/KeySecret scheme is very similar to the AuthKey scheme used in various Cloud service providers to authenticate users.

Example: signer.ExternalCrypto.KeyID = "MainSigningKey"; signer.ExternalCrypto.KeySecret = "abcdef0123456789";

KeySecret
String

Default Value: ""

The pre-shared key used for DC request authentication. This key must be set and match the key used by the DCAuth counterpart for the scheme to work.

Read more about configuring authentication in the KeyID topic.

Method
int

Default Value: 0

Specifies the asynchronous signing method. This is typically defined by the DC server capabilities and setup.

Available options:

asmdPKCS10
asmdPKCS71

Mode
int

Default Value: 0

Specifies the external cryptography mode.

Available options:

ecmDefaultThe default value (0)
ecmDisabledDo not use DC or external signing (1)
ecmGenericGeneric external signing with the OnExternalSign event (2)
ecmDCAuthDCAuth signing (3)
ecmDCAuthJSONDCAuth signing in JSON format (4)

PublicKeyAlgorithm
String

Default Value: ""

Provide the public key algorithm here if the certificate is not available on the pre-signing stage.

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

Constructors

public ExternalCrypto();

Creates a new ExternalCrypto object with default field values.

MailAttachment Type

Represents an attachment to an e-mail message.

Remarks

This object is a container for message attachments.

The following fields are available:

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( contentType);

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.

The following fields are available:

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

Default Value: ""

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

SigAlgorithm
String

Default Value: "0"

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

Source
int (read-only)

Default Value: 0

Returns the source (location or disposition) of a cryptographic primitive entity, such as a certificate, CRL, or OCSP response.

Constructors

public OCSPResponse( bytes,  startIndex,  count);

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( location);

Downloads an OCSP response from a remote location.

public OCSPResponse( stream);

Initializes the response with the data from a stream.

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.

The following fields are available:

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
int (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
boolean (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();

Initializes an instance of PDFDocumentInfo class.

PDFPage Type

This class 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.

The following fields are available:

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();

Creates a new PDF page object.

PDFSignature Type

This class 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.

The following fields are available:

Fields

AllowedChanges
int

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.

Certification
boolean

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
int (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.

CompatibilityErrors
int (read-only)

Default Value: 0

Returns compatibility errors encountered during validation.

Use this property to get specific compatibility errors encountered during validation. Unlike chain validation details, compatibility errors indicate violations by the signature of the assumed signature level/profile. For example, BES signatures are required to contain the signing time attribute. A prospective BES signature without such attribute will invoke a compatibility error.

ContactInfo
String

Default Value: ""

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

ContainsLongTermInfo
boolean (read-only)

Default Value: False

Returns true if the signature was found to contain long-term validation details (certificates, CRLs, and OCSP response).

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 class to extract the exact revision that was signed.

CustomData
byte[]

Default Value: ""

Uninterpreted custom data to save with the signature.

EmptyField
boolean

Default Value: False

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

EntityLabel
String (read-only)

Default Value: ""

Use this property to get the signature entity label.

This property returns a string label that uniquely identifies the signature. The label can be used to establish the signature target in the SignatureFound event or to select the signing chain via the SelectInfo method.

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.

IssuerRDN
String (read-only)

Default Value: ""

The Relative Distinguished Name of the signing certificate's issuer.

A collection of information, in the form of [OID, Value] pairs, about the company that issued the signing certificate.

Level
int

Default Value: 2

Specifies the PAdES signature level.

PAdES standard defines a number of different 'levels' of signatures which can be used for different purposes.

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).

The supported levels are:

paslUnknown0Unknown signature level

paslGeneric1Generic signature: Legacy Adobe signature (adbe.pkcs7.detached), corresponds to pstLegacy signature type

paslBaselineB2Baseline B (B-B, basic)

paslBaselineT3Baseline T (B-T, timestamped)

paslBaselineLT4Baseline LT (B-LT, long-term)

paslBaselineLTA5Baseline LTA (B-LTA, long-term with archived timestamp)

paslBES6BES (Basic Electronic Signature)

paslEPES7EPES (Electronic Signature with an Explicit Policy)

paslLTV8LTV (Electronic Signature with with revocation info)

When evaluating the level of a PAdES signature, SecureBlackbox uses the following criteria and conditions:

  • If the signing chain is found to be invalid or incomplete, the level will be reported as Baseline-B, BES, or EPES, depending on the attributes included in the signature (such as policy details).
  • If the signing chain is found to be valid, the signature includes a timestamp, and the timestamp chain is valid (or the IgnoreTimestampChainValidityForLevelDetection config property is set to true), the level will be reported as Baseline-T.
  • If the Baseline-T conditions above are met, and all the validation material is included in the DSS, the level will be reported as Baseline-LT.
  • If the Baseline-LT conditions above are met, and the signature is protected by a later document timestamp, the level will be reported as Baseline-LTA.
  • If the signing chain is found to be valid, the signature includes a timestamp, and the timestamp chain is valid (or the IgnoreTimestampChainValidityForLevelDetection config property is set to true), and all the validation material is included in the DSS or signature, and the signature does not meet the Baseline-LT and Baseline-LTA criteria, the level will be reported as LTV. In other words, the LTV level is a relaxed version of Baseline-LT, that allows the validation material to be included in the signature itself and not DSS.

Note: The LTV-enabled property reported by Adobe Reader can be misleading, as it does not represent a valid PAdES level. Instead, it is a rather indicative claim that advises that the signature does include some form of an external timestamp (a signature timestamp or a document timestamp) and some piece of validation material, and the signing chain ends up with a local trust anchor. As such, it can be a much weaker property than the Baseline-LT, Baseline-LTA, and LTV levels reported by SecureBlackbox.

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.

PolicyURI
String

Default Value: ""

The signature policy URI that was included in the signature.

Use this property to set or retrieve the URI of the signature policy from EPES signatures.

Reason
String

Default Value: ""

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

SerialNumber
byte[] (read-only)

Default Value: ""

The serial number of the signing certificate.

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.

SignatureType
int

Default Value: 2

The type of the PDF signature: Legacy, PAdES, document timestamp, or unknown.

The supported values are:

pstUnknown0Unknown signature type

pstLegacy1Legacy Adobe signature (adbe.pkcs7.detached or adbe.pkcs7.sha1)

pstPAdES2PAdES signature (ETSI.CAdES.detached), use Level field for detailed info

pstDocumentTimestamp3Document timestamp (ETSI.RFC3161)

SignatureValidationResult
int (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

svtReferenceCorrupted5Reference corrupted (XML-based signatures only)

SubjectKeyID
byte[] (read-only)

Default Value: ""

Contains the subject key identifier of the signing certificate.

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 by a SHA-1 hash of the bit string of the subject public key.

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
boolean (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();

Creates a new PDF signature object.

PDFWidget Type

This class is a container for the signature widget parameters.

Remarks

Use it to adjust the look of the signature widget when creating a signature.

The following fields are available:

Fields

AlgorithmCaption
String

Default Value: "#auto"

The caption of the signature widget field with information about the signature algorithm.

AlgorithmInfo
String

Default Value: "#auto"

Information about the algorithm to be shown on the signature widget.

This property contains information about the algorithm to be displayed in the signature widget. Keep this property set to #auto to make the component generate the algorithm text automatically, in the form of "Algorithm/Key size", e.g. "RSA/1024 bits".

BackgroundData
byte[]

Default Value: ""

Contains/takes the data of the signature widget background bitmap.

Assign the widget background data (in the form of JPEG or JPEG2000 bytes) to this property.

BackgroundHeight
String

Default Value: "0"

Use this field to manually adjust the size of the stretched background picture in the vertical direction.

BackgroundImageHeight
int

Default Value: 0

The height of the background image in pixels.

It is important that this property matches the exact size of the image when a custom background is used. The width and height of the background image have no direct relation to the dimensions of the signature widget on the document page, and are only used to indicate the parameters of the image to the PDF processor. Big images will ultimately be squeezed to fit in the widget, and smaller ones stretched.

BackgroundImageType
int

Default Value: 0

The type of the image contained in BackgroundData. The JPEG and JPEG2000 formats are currently supported.

pwitJPEG20000JPEG 2000 format (supports transparency)
pwitJPEG1standard JPEG format (does not support transparency)
pwitCustom2Custom background format

BackgroundImageWidth
int

Default Value: 0

The width of the background image in pixels.

It is important that this property matches the exact size of the image when a custom background is used. The width and height of the background image have no direct relation to the dimensions of the signature widget on the document page, and are only used to indicate the parameters of the image to the PDF processor. Big images will ultimately be squeezed to fit in the widget, and smaller ones stretched.

BackgroundMask
byte[]

Default Value: ""

Contains the background image mask.

Masks provide a means for marking transparent areas on your signature widgets. Specifically, a transparency mask tells PDF viewing apps which pixels of the signature widget should be kept visible and which should be rendered transparent instead.

In most cases, you will need a unique mask that is tailored for your signature widget image. This is something that you will need to create yourself based on your preferences and the actual image design.

A mask is effectively a matrix of bits, with each bit corresponding to a pixel on your background bitmap. A bit is set to 1 if the corresponding pixel needs to be made transparent, or to 0 if it needs to be opaque.

To create the mask that can be passed to BackgroundMask, please follow the below procedure:

Go through your signature widget bitmap row by row, processing each row of pixels from left to right. For each row,

1. Start with an empty bit string.

2. For every pixel in a row, add a '1' bit if you want it to be transparent, or a '0' bit if you want it to be opaque.

3. Upon reaching the end of the row, append '0' bits to your bit string until the number of bits in it is a multiple of 8. This is because each row of pixels needs to be represented with a whole number of bytes.

4. Convert the bit string to a byte array by grouping every 8 bits into a byte.

Do the same for every row of pixels, and then concatenate the received byte arrays together. Pass the created byte array to BackgroundMask.

A small example. Imagine your image is 19 pixels wide and 3 pixels tall. Imagine you want to make it 'semi-transparent' by using a 'mesh' pattern. The mask will therefore look like this:

10101010 10101010 10100000 // first row

01010101 01010101 01000000 // second row

10101010 10101010 10100000 // third row

Note that the last 5 bits of each row are padding '0' bits and are ignored: you only need them to make each row contain a whole number of bytes. When converted to a byte string, this would look like

0xAA 0xAA 0xA0

0x55 0x55 0x40

0xAA 0xAA 0xA0

, or, if written as a byte array, (0xAA, 0xAA, 0xA0, 0x55, 0x55, 0x40, 0xAA, 0xAA, 0xA0): this is what you need to pass to BackgroundMask.

BackgroundPosition
String

Default Value: ""

The position of the widget background.

Specifies the position of the background image.

The value may be:

The keyword value "center", which centers the image.

A pair of coordinates ("10 5.5"), in which one value defines X and the other defines Y starting from the bottom-left corner.

BackgroundStyle
int

Default Value: 0

The style of the signature widget background.

pwbsDefault uses the default image, pwbsNoBackground doesn't use a background image at all, and pwbsCustom expects the application to provide a custom background image.

pwbsDefault0The default widget background
pwbsNoBackground1No (empty) background
pwbsCustom2Custom background (picture or vector)

BackgroundWidth
String

Default Value: "0"

Use this field to manually adjust the horizontal size of the stretched background picture.

CompressWidgetData
boolean

Default Value: False

Whether the signature widget data should be compressed before saving.

CustomAppearance
byte[]

Default Value: ""

Contains a custom widget description in raw PDF graphic operators format.

Use this property to provide a PDF stream describing the widget appearance.

CustomBackgroundContentStream
String

Default Value: ""

Specifies a custom background content stream for the pwbsCustom BackgroundStyle.

CustomVisualStatusMatrix
String

Default Value: ""

Defines the custom visual status matrix.

Use of this property makes sense only if a visual status icon is displayed over the signature (ShowVisualStatus). Prior to Acrobat 6, a signature's visual appearance was modified with a status icon, e.g., "valid" or "invalid". The visual status matrix is used to position the icon in the signature widget. If CustomVisualStatusMatrix is empty, the value of '0.25 0 0 0.25 0 0' is used.

DateFormat
String

Default Value: ""

The format string used to display the signing date and time in the signature widget.

Leave this property empty (default value) to use the default formatting.

Use the "L" value to convert UTC time to local time using the default formatting, or use the "L:" prefix with a custom date time formatting string.

FontName
String

Default Value: ""

Specifies the font name for the signature text.

Use this property to specify a Type 1 or TrueType font name for the signature text.

The PDF format supports 14 standard Type 1 fonts, specifically: "Times-Roman", "Helvetica", "Courier", "Symbol", "Times-Bold", "Helvetica-Bold", "Courier-Bold", "ZapfDingbats", "Times-Italic", "Helvetica-Oblique", "Courier-Oblique", "Times-BoldItalic", "Helvetica-BoldOblique", "Courier-BoldOblique".

For TrueType font names, the component supports a full font name (e.g. "Times New Roman", "Arial Bold Italic"), its filename (e.g. "times.ttf", "arialbi.ttf"), or a full file name.

If a TrueType font is used, then a font subset is embedded into the PDF document.

The list of system TrueType font names that the component supports could be obtained using the DoAction method with the "GetSystemFontNames" action ID.

Use the FontPaths configuration setting (accessed via Config) to specify font search paths in case the TrueType font filename is provided.

Header
String

Default Value: "#auto"

Specifies the header text to put on the signature widget. Keep this property set to #auto to make the component generate the header automatically.

HideDefaultText
boolean

Default Value: False

Switches off the generation of any headers for the signature widget.

IgnoreExistingAppearance
boolean

Default Value: False

Tells the component to discard any existing widget parameters when signing empty signature fields.

IgnoreExistingAppearance only makes sense for signatures created by signing existing empty signature fields with pre-defined widget descriptions.

InvertMask
boolean

Default Value: False

Specifies whether BackgroundMask should be inverted.

Set this property to flip all the bits in the mask, by making opaque all the bits declared by the mask as transparent, and making transparent all the bits declared as opaque.

Invisible
boolean

Default Value: False

Controls whether the signature widget is visible on the page.

PagesToPlaceOn
String

Default Value: ""

The page numbers on which the signature is shown. This field supports a variety of syntaxes:

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

PositionAnchor
int

Default Value: 0

The anchor to bind the position of the widget to.

Supported values are:

ppaDefault0The signature's OffsetX and OffsetY properties specify the position of the bottom left widget corner starting from the page's physical bottom left corner (doesn't take into account page rotation).
ppaBottomLeft1The signature's OffsetX and OffsetY properties specify the position of the bottom left widget corner starting from the page's bottom left corner according to the viewer's perspective (take into account page rotation).
ppaBottomRight2The signature's OffsetX and OffsetY properties specify the position of the bottom right widget corner starting from the page's bottom right corner according to the viewer's perspective (take into account page rotation).
ppaTopLeft3The signature's OffsetX and OffsetY properties specify the position of the top left widget corner starting from the page's top left corner according to the viewer's perspective (take into account page rotation).
ppaTopRight4The signature's OffsetX and OffsetY properties specify the position of the top right widget corner starting from the page's top right corner according to the viewer's perspective (take into account page rotation).
ppaCenter5The signature's OffsetX and OffsetY properties specify the position of the widget center starting from the page's center according to the viewer's perspective.

RenderOptions
int

Default Value: 8

This setting is a container for a selection of rendering options. OR or NOT an option to include or exclude it from the bit mask.

wroUnknown0x00000Unknown, unsupported, or uninitialized set of options

wroNoRotate0x00001Enabling this option prevents the signature widget from being rotated when the containing document is rotated in a viewing app.

wroNoView0x00002Enabling this option prevents the widget from being displayed when the document is viewed in an app (the widget will still be printed, if configured).

wroNoZoom0x00004Keeps the widget at the same size when the document is zoomed in or out.

wroPrint0x00008Makes the widget printable.

wroReadOnly0x00010Controls the ReadOnly flag of the widget object.

wroToggleNoView0x00020If set, the signature widget will only be displayed when the viewer hovers a mouse pointer over it.

Rotate
int

Default Value: 0

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

ShowDate
boolean

Default Value: True

Whether to display the signing date and time details on the widget.

ShowVisualStatus
boolean

Default Value: False

Specifies whether to show the signature's status icon.

It is a good idea to avoid using the visual status icon, as described below:

According to the Digital Signature Appearances Adobe Acrobat SDK (May 2015), "Prior to Acrobat 6.0, signature appearances were manipulated at run-time in order to display the validity of the signature. The validity was shown as a graphic icon and with an additional, optional text message. The manipulated portions of the signature appearance were contained in layers n1, n3 and n4. Beginning with version 6, Acrobat does not maintain support for signature appearances that can be manipulated, though legacy signatures with these appearances may continue to display correctly. Use of layers n1, n3, and n4 is not recommended."

SignerCaption
String

Default Value: "#auto"

Specifies the caption for the signer section on the signature widget.

The default value, which is used if the property is set to #auto, is "Signer: ".

SignerInfo
String

Default Value: "#auto"

Provides custom signer information to put on the signature widget.

The standard signature widget allows for several short strings separated by CRLF. Keep this property set to #auto to make the component generate the signer text automatically.

Constructors

public PDFWidget();

Creates a new PDF widget object.

ProxySettings Type

A container for proxy server settings.

Remarks

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

The following fields are available:

Fields

Address
String

Default Value: ""

The IP address of the proxy server.

Authentication
int

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
int

Default Value: 0

The type of the proxy server.

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
boolean

Default Value: False

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

Username
String

Default Value: ""

Specifies the username credential for proxy authentication.

Constructors

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.

The following fields are available:

Fields

DNSMode
int

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
boolean

Default Value: False

Enables or disables IP protocol version 6.

Constructors

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.

The following fields are available:

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
int (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.

ContainsLongTermInfo
boolean (read-only)

Default Value: False

Returns true if the signature was found to contain long-term validation details (certificates, CRLs, and OCSP response).

EntityLabel
String (read-only)

Default Value: ""

Use this property to get the timestamp entity label.

This property returns a string label that uniquely identifies the timestamp. The label can be used to establish the signature target in the SignatureFound event or to select the signing chain via the SelectInfo method.

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_WHIRLPOOL