Package com.itextpdf.text.pdf.security

Class ExternalBlankSignatureContainer

java.lang.Object

com.itextpdf.text.pdf.security.ExternalBlankSignatureContainer

All Implemented Interfaces:

ExternalSignatureContainer

public class ExternalBlankSignatureContainer
extends java.lang.Object
implements ExternalSignatureContainer

Produces a blank (or empty) signature. Useful for deferred signing with MakeSignature.signExternalContainer().

Author:

Paulo Soares

Constructor Summary

Constructors

Constructor	Description
ExternalBlankSignatureContainer(PdfDictionary sigDic)
ExternalBlankSignatureContainer(PdfName filter, PdfName subFilter)

Method Summary

Modifier and Type	Method	Description
void	modifySigningDictionary(PdfDictionary signDic)	Modifies the signature dictionary to suit the container.
byte[]	sign(java.io.InputStream data)	Produces the container with the signature.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExternalBlankSignatureContainer

public ExternalBlankSignatureContainer(PdfDictionary sigDic)

ExternalBlankSignatureContainer

public ExternalBlankSignatureContainer(PdfName filter,
                                       PdfName subFilter)

Method Detail

sign

public byte[] sign(java.io.InputStream data)
            throws java.security.GeneralSecurityException

Description copied from interface: ExternalSignatureContainer

Produces the container with the signature.

Specified by:

sign in interface ExternalSignatureContainer

Parameters:

data - the data to sign

Returns:

a container with the signature and other objects, like CRL and OCSP. The container will generally be a PKCS7 one.

Throws:

java.security.GeneralSecurityException

modifySigningDictionary

public void modifySigningDictionary(PdfDictionary signDic)

Description copied from interface: ExternalSignatureContainer

Modifies the signature dictionary to suit the container. At least the keys PdfName.FILTER and PdfName.SUBFILTER will have to be set.

Specified by:

modifySigningDictionary in interface ExternalSignatureContainer

Parameters:

signDic - the signature dictionary