Package se.idsec.signservice.security.sign.pdf.impl

Class BasicPDFSignatureValidator

java.lang.Object

se.idsec.signservice.security.sign.pdf.impl.BasicPDFSignatureValidator

All Implemented Interfaces:

PDFSignatureValidator, SignatureValidator<byte[]>

public class BasicPDFSignatureValidator
extends Object
implements PDFSignatureValidator

Verifies the signature(s) on a PDF document.

This is a basic implementation that just verifies that the actual signatures validates correctly and reports what certificates that was supplied to provide the matching public key. No attempts are made to validate the certificates or any timestamps associated with the signature.

Author:

Martin Lindström (martin@idsec.se), Stefan Santesson (stefan@idsec.se)

Constructor Summary

Constructors

Constructor	Description
BasicPDFSignatureValidator()	Constructor.

Method Summary

Modifier and Type	Method	Description
CertificateValidator	getCertificateValidator()	This basic implementation will always return null.
List<X509Certificate>	getRequiredSignerCertificates()	The basic implementation will always return an empty list.
boolean	isSigned(byte[] document)
List<SignatureValidationResult>	validate(byte[] document)
protected PDFSignatureValidationResult	validatePdfSignature(byte[] document, org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature signature)	Validates the supplied signature.

Methods inherited from class java.lang.Object

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

Constructor Details

BasicPDFSignatureValidator

public BasicPDFSignatureValidator()

Constructor.

Method Details

validate

public List<SignatureValidationResult> validate(byte[] document)
                                         throws SignatureException

Specified by:

validate in interface SignatureValidator<byte[]>

Throws:

SignatureException

validatePdfSignature

protected PDFSignatureValidationResult validatePdfSignature(byte[] document,
 org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature signature)

Validates the supplied signature.

Parameters:

document - the PDF document holding the signature

signature - the signature

Returns:

a validation result

isSigned

public boolean isSigned(byte[] document)
                 throws IllegalArgumentException

Specified by:

isSigned in interface SignatureValidator<byte[]>

Throws:

IllegalArgumentException

getRequiredSignerCertificates

public List<X509Certificate> getRequiredSignerCertificates()

The basic implementation will always return an empty list.

Specified by:

getRequiredSignerCertificates in interface SignatureValidator<byte[]>

getCertificateValidator

public CertificateValidator getCertificateValidator()

This basic implementation will always return null.

Specified by:

getCertificateValidator in interface SignatureValidator<byte[]>