ExternalBlankSignatureContainer

java.lang.Object

com.itextpdf.text.pdf.security.ExternalBlankSignatureContainer

All Implemented Interfaces:: ExternalSignatureContainer

public class ExternalBlankSignatureContainer extends Object implements ExternalSignatureContainer

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

Field Summary

Fields

Modifier and Type

Field

Description

private PdfDictionary

sigDic
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(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

Field Details
- sigDic
  
  private PdfDictionary sigDic
Constructor Details
- ExternalBlankSignatureContainer
  
  public ExternalBlankSignatureContainer(PdfDictionary sigDic)
- ExternalBlankSignatureContainer
  
  public ExternalBlankSignatureContainer(PdfName filter, PdfName subFilter)
Method Details
- sign
  
  public byte[] sign(InputStream data) throws 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:
  
  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