Package com.pdftools.sign

Class Signer

java.lang.Object

com.pdftools.internal.NativeBase

com.pdftools.internal.NativeObject

com.pdftools.sign.Signer

public class Signer
extends NativeObject

Process signatures and signature fields

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	Signer.Warning	Event for non-critical errors occurring during signature processing
static interface	Signer.WarningListener	Listener interface for the Signer.Warning event.

Constructor Summary

Constructors

Constructor	Description
Signer()

Method Summary

Modifier and Type	Method	Description
PreparedDocument	addPreparedSignature(Document document, SignatureConfiguration configuration, Stream stream)	Add a prepared signature
PreparedDocument	addPreparedSignature(Document document, SignatureConfiguration configuration, Stream stream, OutputOptions outputOptions)	Add a prepared signature
Document	addSignatureField(Document document, SignatureFieldOptions options, Stream stream)	Add an unsigned signature field
Document	addSignatureField(Document document, SignatureFieldOptions options, Stream stream, OutputOptions outputOptions)	Add an unsigned signature field
Document	addTimestamp(Document document, TimestampConfiguration configuration, Stream stream)	Add a document time-stamp
Document	addTimestamp(Document document, TimestampConfiguration configuration, Stream stream, OutputOptions outputOptions)	Add a document time-stamp
void	addWarningListener(Signer.WarningListener listener)	Add a listener for the Signer.Warning event.
Document	certify(Document document, SignatureConfiguration configuration, Stream stream)	Add a document certification signature
Document	certify(Document document, SignatureConfiguration configuration, Stream stream, MdpPermissionOptions permissions)	Add a document certification signature
Document	certify(Document document, SignatureConfiguration configuration, Stream stream, MdpPermissionOptions permissions, OutputOptions outputOptions)	Add a document certification signature
Document	process(Document document, Stream stream)	Process a document
Document	process(Document document, Stream stream, OutputOptions outputOptions)	Process a document
Document	process(Document document, Stream stream, OutputOptions outputOptions, Provider provider)	Process a document
void	removeWarningListener(Signer.WarningListener listener)	Remove registered listener for the Signer.Warning event.
Document	sign(Document document, SignatureConfiguration configuration, Stream stream)	Add a document signature
Document	sign(Document document, SignatureConfiguration configuration, Stream stream, OutputOptions outputOptions)	Add a document signature
Document	signPreparedSignature(Document document, SignatureConfiguration configuration, Stream stream)	Sign a prepared signature

Methods inherited from class com.pdftools.internal.NativeObject

equals, hashCode

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Signer

public Signer()

Method Details

addWarningListener

public void addWarningListener(Signer.WarningListener listener)

Add a listener for the Signer.Warning event.

Parameters:

listener - Listener for the Signer.Warning event. If a listener is added that is already registered, it is ignored.

removeWarningListener

public void removeWarningListener(Signer.WarningListener listener)

Remove registered listener for the Signer.Warning event.

Parameters:

listener - Listener for the Signer.Warning event that should be removed. If the listener is not registered, it is ignored.

sign

public Document sign(Document document,
 SignatureConfiguration configuration,
 Stream stream)
              throws IOException,
NotFoundException,
LicenseException,
UnsupportedFeatureException,
PermissionException,
HttpException,
RetryException

Add a document signature

Document signatures are sometimes also called approval signatures. This type of signature lets you verify the integrity of the signed part of the document and authenticate the signer’s identity.

The features and format of the signature are defined by the pdftools.crypto.providers.Provider and the configuration.

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to sign

configuration - The signature configuration

stream - The stream where the signed document is written

Returns:

The signed document

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed.

IllegalArgumentException - If the configuration is invalid, e.g. because it has been revoked.

NotFoundException - If the SignatureConfiguration.getFieldName() does not exist in document.

NotFoundException - If an image, a PDF or a font file for the visual appearance could not be found.

RetryException - If an unexpected error occurs that can be resolved by retrying the operation. For example, if a signature service returns an unexpectedly large signature.

RetryException - If a resource required by the cryptographic provider is temporarily unavailable.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL) or a time-stamp.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

PermissionException - If the cryptographic provider does not allow the signing operation.

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

sign

public Document sign(Document document,
 SignatureConfiguration configuration,
 Stream stream,
 OutputOptions outputOptions)
              throws IOException,
NotFoundException,
LicenseException,
UnsupportedFeatureException,
PermissionException,
HttpException,
RetryException

Add a document signature

Document signatures are sometimes also called approval signatures. This type of signature lets you verify the integrity of the signed part of the document and authenticate the signer’s identity.

The features and format of the signature are defined by the pdftools.crypto.providers.Provider and the configuration.

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to sign

configuration - The signature configuration

stream - The stream where the signed document is written

outputOptions - Document-level output options not directly related to the signature

Returns:

The signed document

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed.

IllegalArgumentException - If the configuration is invalid, e.g. because it has been revoked.

NotFoundException - If the SignatureConfiguration.getFieldName() does not exist in document.

NotFoundException - If an image, a PDF or a font file for the visual appearance could not be found.

RetryException - If an unexpected error occurs that can be resolved by retrying the operation. For example, if a signature service returns an unexpectedly large signature.

RetryException - If a resource required by the cryptographic provider is temporarily unavailable.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL) or a time-stamp.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

PermissionException - If the cryptographic provider does not allow the signing operation.

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

certify

public Document certify(Document document,
 SignatureConfiguration configuration,
 Stream stream)
                 throws IOException,
NotFoundException,
LicenseException,
UnsupportedFeatureException,
PermissionException,
HttpException,
RetryException

Add a document certification signature

This type of signature lets you detect rejected changes specified by the author. These signatures are also called Modification Detection and Prevention (MDP) signatures. The allowed permissions are defined by permissions.

The features and format of the signature are defined by the pdftools.crypto.providers.Provider and the configuration.

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to certify

configuration - The signature configuration

stream - The stream where the certified document is written

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed.

NotFoundException - If the SignatureConfiguration.getFieldName() does not exist in document.

RetryException - If an unexpected error occurs that can be resolved by retrying the operation. For example, if a signature service returns an unexpectedly large signature.

RetryException - If a resource required by the cryptographic provider is temporarily unavailable.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL) or a time-stamp.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

PermissionException - If the cryptographic provider does not allow the signing operation.

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

certify

public Document certify(Document document,
 SignatureConfiguration configuration,
 Stream stream,
 MdpPermissionOptions permissions)
                 throws IOException,
NotFoundException,
LicenseException,
UnsupportedFeatureException,
PermissionException,
HttpException,
RetryException

Add a document certification signature

This type of signature lets you detect rejected changes specified by the author. These signatures are also called Modification Detection and Prevention (MDP) signatures. The allowed permissions are defined by permissions.

The features and format of the signature are defined by the pdftools.crypto.providers.Provider and the configuration.

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to certify

configuration - The signature configuration

stream - The stream where the certified document is written

permissions - The permissions allowed. The default is pdftools.pdf.MdpPermissions.NO_CHANGES.

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed.

NotFoundException - If the SignatureConfiguration.getFieldName() does not exist in document.

RetryException - If an unexpected error occurs that can be resolved by retrying the operation. For example, if a signature service returns an unexpectedly large signature.

RetryException - If a resource required by the cryptographic provider is temporarily unavailable.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL) or a time-stamp.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

PermissionException - If the cryptographic provider does not allow the signing operation.

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

certify

public Document certify(Document document,
 SignatureConfiguration configuration,
 Stream stream,
 MdpPermissionOptions permissions,
 OutputOptions outputOptions)
                 throws IOException,
NotFoundException,
LicenseException,
UnsupportedFeatureException,
PermissionException,
HttpException,
RetryException

Add a document certification signature

This type of signature lets you detect rejected changes specified by the author. These signatures are also called Modification Detection and Prevention (MDP) signatures. The allowed permissions are defined by permissions.

The features and format of the signature are defined by the pdftools.crypto.providers.Provider and the configuration.

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to certify

configuration - The signature configuration

stream - The stream where the certified document is written

permissions - The permissions allowed. The default is pdftools.pdf.MdpPermissions.NO_CHANGES.

outputOptions - Document-level output options not directly related to the document certification

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed.

NotFoundException - If the SignatureConfiguration.getFieldName() does not exist in document.

RetryException - If an unexpected error occurs that can be resolved by retrying the operation. For example, if a signature service returns an unexpectedly large signature.

RetryException - If a resource required by the cryptographic provider is temporarily unavailable.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL) or a time-stamp.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

PermissionException - If the cryptographic provider does not allow the signing operation.

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

addTimestamp

public Document addTimestamp(Document document,
 TimestampConfiguration configuration,
 Stream stream)
                      throws IOException,
NotFoundException,
LicenseException,
UnsupportedFeatureException,
PermissionException,
HttpException,
RetryException

Add a document time-stamp

This type of signature provides evidence that the document existed at a specific time and protects the document’s integrity.

The features and format of the signature are defined by the pdftools.crypto.providers.Provider and the configuration.

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to add a time-stamp to

configuration - The time-stamp configuration

stream - The stream where the output document is written

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed.

NotFoundException - If the SignatureConfiguration.getFieldName() does not exist in document.

RetryException - If an unexpected error occurs that can be resolved by retrying the operation. For example, if a signature service returns an unexpectedly large signature.

RetryException - If a resource required by the cryptographic provider is temporarily unavailable.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL) or a time-stamp.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

PermissionException - If the cryptographic provider does not allow the signing operation.

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

addTimestamp

public Document addTimestamp(Document document,
 TimestampConfiguration configuration,
 Stream stream,
 OutputOptions outputOptions)
                      throws IOException,
NotFoundException,
LicenseException,
UnsupportedFeatureException,
PermissionException,
HttpException,
RetryException

Add a document time-stamp

This type of signature provides evidence that the document existed at a specific time and protects the document’s integrity.

The features and format of the signature are defined by the pdftools.crypto.providers.Provider and the configuration.

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to add a time-stamp to

configuration - The time-stamp configuration

stream - The stream where the output document is written

outputOptions - Document-level output options not directly related to the document time-stamp

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed.

NotFoundException - If the SignatureConfiguration.getFieldName() does not exist in document.

RetryException - If an unexpected error occurs that can be resolved by retrying the operation. For example, if a signature service returns an unexpectedly large signature.

RetryException - If a resource required by the cryptographic provider is temporarily unavailable.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL) or a time-stamp.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

PermissionException - If the cryptographic provider does not allow the signing operation.

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

addSignatureField

public Document addSignatureField(Document document,
 SignatureFieldOptions options,
 Stream stream)
                           throws IOException,
LicenseException,
UnsupportedFeatureException,
ExistsException

Add an unsigned signature field

Add an unsigned signature field that can later be signed (see pdftools.pdf.UnsignedSignatureField).

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to add the signature field to

options - The options for the unsigned signature field

stream - The stream where the output document is written

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

ExistsException - The SignatureFieldOptions.getFieldName() exists already in the input document.

IllegalArgumentException - if document is null

IllegalArgumentException - if options is null

IllegalArgumentException - if stream is null

addSignatureField

public Document addSignatureField(Document document,
 SignatureFieldOptions options,
 Stream stream,
 OutputOptions outputOptions)
                           throws IOException,
LicenseException,
UnsupportedFeatureException,
ExistsException

Add an unsigned signature field

Add an unsigned signature field that can later be signed (see pdftools.pdf.UnsignedSignatureField).

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to add the signature field to

options - The options for the unsigned signature field

stream - The stream where the output document is written

outputOptions - Document-level output options not directly related to the signature field

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

ExistsException - The SignatureFieldOptions.getFieldName() exists already in the input document.

IllegalArgumentException - if document is null

IllegalArgumentException - if options is null

IllegalArgumentException - if stream is null

addPreparedSignature

public PreparedDocument addPreparedSignature(Document document,
 SignatureConfiguration configuration,
 Stream stream)
                                      throws IOException,
NotFoundException,
LicenseException,
UnsupportedFeatureException,
HttpException

Add a prepared signature

Adding a prepared signature is only required in very particular or specialized use cases. This method is the same as sign(com.pdftools.pdf.Document, com.pdftools.sign.SignatureConfiguration, com.pdftools.sys.Stream), but without actually creating the cryptographic signature. The cryptographic signature can be inserted later using signPreparedSignature(com.pdftools.pdf.Document, com.pdftools.sign.SignatureConfiguration, com.pdftools.sys.Stream).

While the configuration can be created by any pdftools.crypto.providers.Provider, it is typically created by pdftools.crypto.providers.builtin.Provider.createPreparedSignature.

Parameters:

document - The input document to add the prepared signature

configuration - The signature configuration

stream - The stream where the output document is written

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed

NotFoundException - If the SignatureConfiguration.getFieldName() does not exist in document.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL).

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

addPreparedSignature

public PreparedDocument addPreparedSignature(Document document,
 SignatureConfiguration configuration,
 Stream stream,
 OutputOptions outputOptions)
                                      throws IOException,
NotFoundException,
LicenseException,
UnsupportedFeatureException,
HttpException

Add a prepared signature

Adding a prepared signature is only required in very particular or specialized use cases. This method is the same as sign(com.pdftools.pdf.Document, com.pdftools.sign.SignatureConfiguration, com.pdftools.sys.Stream), but without actually creating the cryptographic signature. The cryptographic signature can be inserted later using signPreparedSignature(com.pdftools.pdf.Document, com.pdftools.sign.SignatureConfiguration, com.pdftools.sys.Stream).

While the configuration can be created by any pdftools.crypto.providers.Provider, it is typically created by pdftools.crypto.providers.builtin.Provider.createPreparedSignature.

Parameters:

document - The input document to add the prepared signature

configuration - The signature configuration

stream - The stream where the output document is written

outputOptions - Document-level output options not directly related to preparing the signature

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed

NotFoundException - If the SignatureConfiguration.getFieldName() does not exist in document.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL).

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

signPreparedSignature

public Document signPreparedSignature(Document document,
 SignatureConfiguration configuration,
 Stream stream)
                               throws IOException,
LicenseException,
UnsupportedFeatureException,
PermissionException,
HttpException,
RetryException

Sign a prepared signature

Sign a document that contains a prepared signature created using addPreparedSignature(com.pdftools.pdf.Document, com.pdftools.sign.SignatureConfiguration, com.pdftools.sys.Stream). Note that the configuration must be compatible to the configuration used when preparing the signature.

Parameters:

document - The input document to sign

configuration - The signature configuration

stream - The stream where the signed document is written

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

IllegalArgumentException - If the document does not contain a prepared signature created by addPreparedSignature(com.pdftools.pdf.Document, com.pdftools.sign.SignatureConfiguration, com.pdftools.sys.Stream)

IllegalArgumentException - If the configuration is invalid, e.g. because the creating provider has been closed.

RetryException - If an unexpected error occurs that can be resolved by retrying the operation. For example, if a signature service returns an unexpectedly large signature.

RetryException - If a resource required by the cryptographic provider is temporarily unavailable.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL) or a time-stamp.

UnsupportedFeatureException - If the cryptographic provider does not support the requested signing algorithm.

PermissionException - If the cryptographic provider does not allow the signing operation.

IllegalArgumentException - if document is null

IllegalArgumentException - if configuration is null

IllegalArgumentException - if stream is null

process

public Document process(Document document,
 Stream stream)
                 throws IOException,
LicenseException,
UnsupportedFeatureException,
HttpException

Process a document

Apply document-level processing options without any signature operation. For example:

• To encrypt or decrypt PDF documents that may be signed (see the samples "Encrypt" and "Decrypt").
• To remove signatures and unsigned signature fields (see OutputOptions.getRemoveSignatures()).
• To add validation information to existing signatures (see OutputOptions.getAddValidationInformation()).

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to process

stream - The stream where the output document is written

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL).

IllegalArgumentException - if document is null

IllegalArgumentException - if stream is null

process

public Document process(Document document,
 Stream stream,
 OutputOptions outputOptions)
                 throws IOException,
LicenseException,
UnsupportedFeatureException,
HttpException

Process a document

Apply document-level processing options without any signature operation. For example:

• To encrypt or decrypt PDF documents that may be signed (see the samples "Encrypt" and "Decrypt").
• To remove signatures and unsigned signature fields (see OutputOptions.getRemoveSignatures()).
• To add validation information to existing signatures (see OutputOptions.getAddValidationInformation()).

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to process

stream - The stream where the output document is written

outputOptions - The document-level processing options

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL).

IllegalArgumentException - if document is null

IllegalArgumentException - if stream is null

process

public Document process(Document document,
 Stream stream,
 OutputOptions outputOptions,
 Provider provider)
                 throws IOException,
LicenseException,
UnsupportedFeatureException,
HttpException

Process a document

Apply document-level processing options without any signature operation. For example:

• To encrypt or decrypt PDF documents that may be signed (see the samples "Encrypt" and "Decrypt").
• To remove signatures and unsigned signature fields (see OutputOptions.getRemoveSignatures()).
• To add validation information to existing signatures (see OutputOptions.getAddValidationInformation()).

Non-critical processing errors raise a Signer.WarningListener. It is recommended to review the WarningCategory and handle them if necessary for the application.

Parameters:

document - The input document to process

stream - The stream where the output document is written

outputOptions - The document-level processing options

provider - The cryptographic provider to use to add validation information to existing signatures of input document (see OutputOptions.getAddValidationInformation()). Can be null if no validation information is added or to use the default provider.

Returns:

Throws:

LicenseException - The license check has failed.

IOException - Writing to the stream failed.

UnsupportedFeatureException - The input PDF contains unrendered XFA form fields. See pdftools.pdf.Document.getXfa for more information on how to detect and handle XFA documents.

HttpException - If a network error occurs, e.g. downloading revocation information (OCSP, CRL).

IllegalArgumentException - if document is null

IllegalArgumentException - if stream is null