Takes care of the cryptographic options and appearances that form a signature. More...

Classes
interface	ISignatureEvent
	An interface to retrieve the signature dictionary for modification. More...

Public Types
enum	CryptoStandard { CryptoStandard.CMS, CryptoStandard.CADES }
	Enum containing the Cryptographic Standards. More...

Public Member Functions
	PdfSigner (PdfReader reader, Stream outputStream, StampingProperties properties)
	Creates a PdfSigner instance. More...

	PdfSigner (PdfReader reader, Stream outputStream, String path, StampingProperties properties)
	Creates a PdfSigner instance. More...

virtual DateTime	GetSignDate ()
	Gets the signature date. More...

virtual void	SetSignDate (DateTime signDate)
	Sets the signature date. More...

virtual PdfSignatureAppearance	GetSignatureAppearance ()
	Provides access to a signature appearance object. More...

virtual int	GetCertificationLevel ()
	Returns the document's certification level. More...

virtual void	SetCertificationLevel (int certificationLevel)
	Sets the document's certification level. More...

virtual String	GetFieldName ()
	Gets the field name. More...

virtual PdfSignature	GetSignatureDictionary ()
	Returns the user made signature dictionary. More...

virtual PdfSigner.ISignatureEvent	GetSignatureEvent ()
	Getter for property signatureEvent. More...

virtual void	SetSignatureEvent (PdfSigner.ISignatureEvent signatureEvent)
	Sets the signature event to allow modification of the signature dictionary. More...

virtual String	GetNewSigFieldName ()
	Gets a new signature field name that doesn't clash with any existing name. More...

virtual void	SetFieldName (String fieldName)
	Sets the name indicating the field to be signed. More...

virtual PdfDocument	GetDocument ()
	Gets the PdfDocument associated with this instance. More...

virtual void	SetOriginalOutputStream (Stream originalOS)
	Setter for the OutputStream. More...

virtual PdfSigFieldLock	GetFieldLockDict ()
	Getter for the field lock dictionary. More...

virtual void	SetFieldLockDict (PdfSigFieldLock fieldLock)
	Setter for the field lock dictionary. More...

virtual void	SignDetached (IExternalSignature externalSignature, X509Certificate[] chain, ICollection< ICrlClient > crlList, IOcspClient ocspClient, ITSAClient tsaClient, int estimatedSize, PdfSigner.CryptoStandard sigtype)
	Signs the document using the detached mode, CMS or CAdES equivalent. More...

virtual void	SignDetached (IExternalSignature externalSignature, X509Certificate[] chain, ICollection< ICrlClient > crlList, IOcspClient ocspClient, ITSAClient tsaClient, int estimatedSize, PdfSigner.CryptoStandard sigtype, SignaturePolicyInfo signaturePolicy)
	Signs the document using the detached mode, CMS or CAdES equivalent. More...

virtual void	SignDetached (IExternalSignature externalSignature, X509Certificate[] chain, ICollection< ICrlClient > crlList, IOcspClient ocspClient, ITSAClient tsaClient, int estimatedSize, PdfSigner.CryptoStandard sigtype, SignaturePolicyIdentifier signaturePolicy)
	Signs the document using the detached mode, CMS or CAdES equivalent. More...

virtual void	SignExternalContainer (IExternalSignatureContainer externalSignatureContainer, int estimatedSize)
	Sign the document using an external container, usually a PKCS7. More...

virtual void	Timestamp (ITSAClient tsa, String signatureName)
	Signs a document with a PAdES-LTV Timestamp. More...

Static Public Member Functions
static void	SignDeferred (PdfDocument document, String fieldName, Stream outs, IExternalSignatureContainer externalSignatureContainer)
	Signs a PDF where space was already reserved. More...

Static Public Attributes
const int	NOT_CERTIFIED = 0
	Approval signature. More...

const int	CERTIFIED_NO_CHANGES_ALLOWED = 1
	Author signature, no changes allowed. More...

const int	CERTIFIED_FORM_FILLING = 2
	Author signature, form filling allowed. More...

const int	CERTIFIED_FORM_FILLING_AND_ANNOTATIONS = 3
	Author signature, form filling and annotations allowed. More...

Detailed Description

Takes care of the cryptographic options and appearances that form a signature.

Member Enumeration Documentation

◆ CryptoStandard

enum iText.Signatures.PdfSigner.CryptoStandard

strong

Enum containing the Cryptographic Standards.

Enum containing the Cryptographic Standards. Possible values are "CMS" and "CADES".

Enumerator
CMS	Cryptographic Message Syntax.
CADES	CMS Advanced Electronic Signatures.

Constructor & Destructor Documentation

◆ PdfSigner() [1/2]

iText.Signatures.PdfSigner.PdfSigner	(	PdfReader	reader,
		Stream	outputStream,
		StampingProperties	properties
	)

inline

Creates a PdfSigner instance.

Creates a PdfSigner instance. Uses a System.IO.MemoryStream instead of a temporary file.

Parameters

reader	PdfReader that reads the PDF file
outputStream	OutputStream to write the signed PDF file
properties

iText.Kernel.Pdf.StampingProperties for the signing document. Note that encryption will be preserved regardless of what is set in properties.

◆ PdfSigner() [2/2]

iText.Signatures.PdfSigner.PdfSigner	(	PdfReader	reader,
		Stream	outputStream,
		String	path,
		StampingProperties	properties
	)

inline

Creates a PdfSigner instance.

Creates a PdfSigner instance. Uses a System.IO.MemoryStream instead of a temporary file.

Parameters

reader	PdfReader that reads the PDF file
outputStream	OutputStream to write the signed PDF file
path	File to which the output is temporarily written
properties

iText.Kernel.Pdf.StampingProperties for the signing document. Note that encryption will be preserved regardless of what is set in properties.

Member Function Documentation

◆ GetCertificationLevel()

virtual int iText.Signatures.PdfSigner.GetCertificationLevel ( )

inlinevirtual

Returns the document's certification level.

Returns the document's certification level. For possible values see SetCertificationLevel(int).

Returns: The certified status.

◆ GetDocument()

virtual PdfDocument iText.Signatures.PdfSigner.GetDocument ( )

inlinevirtual

Gets the PdfDocument associated with this instance.

Returns: the PdfDocument associated with this instance

◆ GetFieldLockDict()

virtual PdfSigFieldLock iText.Signatures.PdfSigner.GetFieldLockDict ( )

inlinevirtual

Getter for the field lock dictionary.

Returns: Field lock dictionary.

◆ GetFieldName()

virtual String iText.Signatures.PdfSigner.GetFieldName ( )

inlinevirtual

Gets the field name.

Returns: the field name

◆ GetNewSigFieldName()

virtual String iText.Signatures.PdfSigner.GetNewSigFieldName ( )

inlinevirtual

Gets a new signature field name that doesn't clash with any existing name.

Returns: A new signature field name.

◆ GetSignatureAppearance()

virtual PdfSignatureAppearance iText.Signatures.PdfSigner.GetSignatureAppearance ( )

inlinevirtual

Provides access to a signature appearance object.

Provides access to a signature appearance object. Use it to customize the appearance of the signature.

Be aware:

If you create new signature field (either use SetFieldName(System.String) with the name that doesn't exist in the document or don't specify it at all) then the signature is invisible by default.
If you sign already existing field, then the signature appearance object is modified to have all the properties (page num., rect etc.) consistent with the state of the field (if you customized the appearance object before the SetFieldName(System.String) call you'll have to do it again)

Returns

PdfSignatureAppearance object.

◆ GetSignatureDictionary()

virtual PdfSignature iText.Signatures.PdfSigner.GetSignatureDictionary ( )

inlinevirtual

Returns the user made signature dictionary.

Returns the user made signature dictionary. This is the dictionary at the /V key of the signature field.

Returns: The user made signature dictionary.

◆ GetSignatureEvent()

virtual PdfSigner.ISignatureEvent iText.Signatures.PdfSigner.GetSignatureEvent ( )

inlinevirtual

Getter for property signatureEvent.

Returns: Value of property signatureEvent.

◆ GetSignDate()

virtual DateTime iText.Signatures.PdfSigner.GetSignDate ( )

inlinevirtual

Gets the signature date.

Returns: Calendar set to the signature date

◆ SetCertificationLevel()

virtual void iText.Signatures.PdfSigner.SetCertificationLevel ( int certificationLevel )

inlinevirtual

Sets the document's certification level.

Parameters

certificationLevel

a new certification level for a document. Possible values are:

◆ SetFieldLockDict()

virtual void iText.Signatures.PdfSigner.SetFieldLockDict ( PdfSigFieldLock fieldLock )

inlinevirtual

Setter for the field lock dictionary.

Be aware: if a signature is created on an existing signature field, then its /Lock dictionary takes the precedence (if it exists).

Parameters

fieldLock Field lock dictionary

◆ SetFieldName()

virtual void iText.Signatures.PdfSigner.SetFieldName ( String fieldName )

inlinevirtual

Sets the name indicating the field to be signed.

Sets the name indicating the field to be signed. The field can already be presented in the document but shall not be signed. If the field is not presented in the document, it will be created.

Parameters

fieldName The name indicating the field to be signed.

◆ SetOriginalOutputStream()

virtual void iText.Signatures.PdfSigner.SetOriginalOutputStream ( Stream originalOS )

inlinevirtual

Setter for the OutputStream.

Parameters

originalOS OutputStream for the bytes of the document

◆ SetSignatureEvent()

virtual void iText.Signatures.PdfSigner.SetSignatureEvent ( PdfSigner.ISignatureEvent signatureEvent )

inlinevirtual

Sets the signature event to allow modification of the signature dictionary.

Parameters

signatureEvent the signature event

◆ SetSignDate()

virtual void iText.Signatures.PdfSigner.SetSignDate ( DateTime signDate )

inlinevirtual

Sets the signature date.

Parameters

signDate the signature date

◆ SignDeferred()

static void iText.Signatures.PdfSigner.SignDeferred	(	PdfDocument	document,
		String	fieldName,
		Stream	outs,
		IExternalSignatureContainer	externalSignatureContainer
	)

inlinestatic

Signs a PDF where space was already reserved.

Parameters

document	the original PDF
fieldName	the field to sign. It must be the last field
outs	the output PDF
externalSignatureContainer	the signature container doing the actual signing. Only the method ExternalSignatureContainer.sign is used

◆ SignDetached() [1/3]

virtual void iText.Signatures.PdfSigner.SignDetached	(	IExternalSignature	externalSignature,
		X509Certificate[]	chain,
		ICollection< ICrlClient >	crlList,
		IOcspClient	ocspClient,
		ITSAClient	tsaClient,
		int	estimatedSize,
		PdfSigner.CryptoStandard	sigtype
	)

inlinevirtual

Signs the document using the detached mode, CMS or CAdES equivalent.

Signs the document using the detached mode, CMS or CAdES equivalent.

NOTE: This method closes the underlying pdf document. This means, that current instance of PdfSigner cannot be used after this method call.

Parameters

externalSignature	the interface providing the actual signing
chain	the certificate chain
crlList	the CRL list
ocspClient	the OCSP client
tsaClient	the Timestamp client
estimatedSize	the reserved size for the signature. It will be estimated if 0
sigtype	Either Signature.CMS or Signature.CADES

◆ SignDetached() [2/3]

virtual void iText.Signatures.PdfSigner.SignDetached	(	IExternalSignature	externalSignature,
		X509Certificate[]	chain,
		ICollection< ICrlClient >	crlList,
		IOcspClient	ocspClient,
		ITSAClient	tsaClient,
		int	estimatedSize,
		PdfSigner.CryptoStandard	sigtype,
		SignaturePolicyIdentifier	signaturePolicy
	)

inlinevirtual

Signs the document using the detached mode, CMS or CAdES equivalent.

Signs the document using the detached mode, CMS or CAdES equivalent.

NOTE: This method closes the underlying pdf document. This means, that current instance of PdfSigner cannot be used after this method call.

Parameters

externalSignature	the interface providing the actual signing
chain	the certificate chain
crlList	the CRL list
ocspClient	the OCSP client
tsaClient	the Timestamp client
estimatedSize	the reserved size for the signature. It will be estimated if 0
sigtype	Either Signature.CMS or Signature.CADES
signaturePolicy	the signature policy (for EPES signatures)

◆ SignDetached() [3/3]

virtual void iText.Signatures.PdfSigner.SignDetached	(	IExternalSignature	externalSignature,
		X509Certificate[]	chain,
		ICollection< ICrlClient >	crlList,
		IOcspClient	ocspClient,
		ITSAClient	tsaClient,
		int	estimatedSize,
		PdfSigner.CryptoStandard	sigtype,
		SignaturePolicyInfo	signaturePolicy
	)

inlinevirtual

Signs the document using the detached mode, CMS or CAdES equivalent.

Signs the document using the detached mode, CMS or CAdES equivalent.

NOTE: This method closes the underlying pdf document. This means, that current instance of PdfSigner cannot be used after this method call.

Parameters

externalSignature	the interface providing the actual signing
chain	the certificate chain
crlList	the CRL list
ocspClient	the OCSP client
tsaClient	the Timestamp client
estimatedSize	the reserved size for the signature. It will be estimated if 0
sigtype	Either Signature.CMS or Signature.CADES
signaturePolicy	the signature policy (for EPES signatures)

◆ SignExternalContainer()

virtual void iText.Signatures.PdfSigner.SignExternalContainer	(	IExternalSignatureContainer	externalSignatureContainer,
		int	estimatedSize
	)

inlinevirtual

Sign the document using an external container, usually a PKCS7.

Sign the document using an external container, usually a PKCS7. The signature is fully composed externally, iText will just put the container inside the document.

NOTE: This method closes the underlying pdf document. This means, that current instance of PdfSigner cannot be used after this method call.

Parameters

externalSignatureContainer	the interface providing the actual signing
estimatedSize	the reserved size for the signature

◆ Timestamp()

virtual void iText.Signatures.PdfSigner.Timestamp	(	ITSAClient	tsa,
		String	signatureName
	)

inlinevirtual

Signs a document with a PAdES-LTV Timestamp.

Signs a document with a PAdES-LTV Timestamp. The document is closed at the end.

NOTE: This method closes the underlying pdf document. This means, that current instance of PdfSigner cannot be used after this method call.

Parameters

tsa	the timestamp generator
signatureName	the signature name or null to have a name generated automatically

Member Data Documentation

◆ CERTIFIED_FORM_FILLING

const int iText.Signatures.PdfSigner.CERTIFIED_FORM_FILLING = 2

static

Author signature, form filling allowed.

◆ CERTIFIED_FORM_FILLING_AND_ANNOTATIONS

const int iText.Signatures.PdfSigner.CERTIFIED_FORM_FILLING_AND_ANNOTATIONS = 3

static

Author signature, form filling and annotations allowed.

◆ CERTIFIED_NO_CHANGES_ALLOWED

const int iText.Signatures.PdfSigner.CERTIFIED_NO_CHANGES_ALLOWED = 1

static

Author signature, no changes allowed.

◆ NOT_CERTIFIED

const int iText.Signatures.PdfSigner.NOT_CERTIFIED = 0

static

Approval signature.

Classes

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Detailed Description

Member Enumeration Documentation

◆ CryptoStandard

Constructor & Destructor Documentation

◆ PdfSigner() [1/2]

◆ PdfSigner() [2/2]

Member Function Documentation

◆ GetCertificationLevel()

◆ GetDocument()

◆ GetFieldLockDict()

◆ GetFieldName()

◆ GetNewSigFieldName()

◆ GetSignatureAppearance()

◆ GetSignatureDictionary()

◆ GetSignatureEvent()

◆ GetSignDate()

◆ SetCertificationLevel()

◆ SetFieldLockDict()

◆ SetFieldName()

◆ SetOriginalOutputStream()

◆ SetSignatureEvent()

◆ SetSignDate()

◆ SignDeferred()

◆ SignDetached() [1/3]

◆ SignDetached() [2/3]

◆ SignDetached() [3/3]

◆ SignExternalContainer()

◆ Timestamp()

Member Data Documentation

◆ CERTIFIED_FORM_FILLING

◆ CERTIFIED_FORM_FILLING_AND_ANNOTATIONS

◆ CERTIFIED_NO_CHANGES_ALLOWED

◆ NOT_CERTIFIED