Package eu.europa.esig.dss.pdf

Class AbstractPDFSignatureService

java.lang.Object

eu.europa.esig.dss.pdf.AbstractPDFSignatureService

All Implemented Interfaces:

PDFSignatureService

Direct Known Subclasses:

ITextPDFSignatureService, PdfBoxSignatureService

public abstract class AbstractPDFSignatureService
extends Object
implements PDFSignatureService

Field Summary

Fields

Modifier and Type	Field	Description
protected PDFServiceMode	serviceMode
protected SignatureDrawerFactory	signatureDrawerFactory

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractPDFSignatureService(PDFServiceMode serviceMode, SignatureDrawerFactory signatureDrawerFactory)	Constructor for the PDFSignatureService

Method Summary

Modifier and Type	Method	Description
protected Map<String,Long>	buildKnownObjects(List<DSSDictionaryCallback> callbacks)	This method builds a Map of known Objects (extracted from previous DSS Dictionaries).
protected DigestAlgorithm	getCurrentDigestAlgorithm(PAdESSignatureParameters parameters)
protected byte[]	getOriginalBytes(int[] byteRange, byte[] signedContent)
protected abstract List<PdfRevision>	getSignatures(CertificatePool validationCertPool, DSSDocument document)
protected byte[]	getSignatureValue(DSSDocument dssDocument, int[] byteRange)
protected byte[]	getSignedContent(DSSDocument dssDocument, int[] byteRange)
protected String	getTokenDigest(Token token)
protected String	getType()
protected boolean	isContentValueEqualsByteRangeExtraction(DSSDocument document, int[] byteRange, byte[] cms, List<String> signatureFieldNames)
protected boolean	isDocTimestamp(PdfSignatureDictionary pdfSigDict)	Checks if the given signature dictionary represents a DocTimeStamp
protected boolean	isDocumentTimestampLayer()
protected boolean	isSignature(PdfSignatureDictionary pdfSigDict)	Checks if the given signature dictionary represents a Signature
protected void	linkSignatures(List<PdfRevision> signatures)	This method links previous signatures to the new one.
protected void	validateByteRange(int[] byteRange)
void	validateSignatures(CertificatePool validationCertPool, DSSDocument document, SignatureValidationCallback callback)	Retrieves and triggers validation of the signatures from a PDF document

Methods inherited from class java.lang.Object

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

Methods inherited from interface eu.europa.esig.dss.pdf.PDFSignatureService

addDssDictionary, addNewSignatureField, digest, getAvailableSignatureFields, sign

Field Details

serviceMode

protected final PDFServiceMode serviceMode

signatureDrawerFactory

protected final SignatureDrawerFactory signatureDrawerFactory

Constructor Details

AbstractPDFSignatureService

protected AbstractPDFSignatureService(PDFServiceMode serviceMode, SignatureDrawerFactory signatureDrawerFactory)

Constructor for the PDFSignatureService

Parameters:

serviceMode - current instance is used to generate DocumentTypestamp or Signature signature layer

signatureDrawerFactory - the factory of SignatureDrawer

Method Details

isDocumentTimestampLayer

protected boolean isDocumentTimestampLayer()

getType

protected String getType()

getCurrentDigestAlgorithm

protected DigestAlgorithm getCurrentDigestAlgorithm(PAdESSignatureParameters parameters)

validateSignatures

public void validateSignatures(CertificatePool validationCertPool, DSSDocument document, SignatureValidationCallback callback)

Description copied from interface: PDFSignatureService

Retrieves and triggers validation of the signatures from a PDF document

Specified by:

validateSignatures in interface PDFSignatureService

Parameters:

validationCertPool - the certificate pool

document - the document to be validated

callback - callback for signature validation

getSignatures

protected abstract List<PdfRevision> getSignatures(CertificatePool validationCertPool, DSSDocument document)

linkSignatures

protected void linkSignatures(List<PdfRevision> signatures)

This method links previous signatures to the new one. This is useful to get revision number and to know if a TSP is over the DSS dictionary

getSignedContent

protected byte[] getSignedContent(DSSDocument dssDocument, int[] byteRange) throws IOException

Throws:

IOException

isContentValueEqualsByteRangeExtraction

protected boolean isContentValueEqualsByteRangeExtraction(DSSDocument document, int[] byteRange, byte[] cms, List<String> signatureFieldNames)

getSignatureValue

protected byte[] getSignatureValue(DSSDocument dssDocument, int[] byteRange) throws IOException

Throws:

IOException

getOriginalBytes

protected byte[] getOriginalBytes(int[] byteRange, byte[] signedContent)

validateByteRange

protected void validateByteRange(int[] byteRange)

isDocTimestamp

protected boolean isDocTimestamp(PdfSignatureDictionary pdfSigDict)

Checks if the given signature dictionary represents a DocTimeStamp

Parameters:

pdfSigDict - PdfSignatureDictionary to check

Returns:

TRUE if the signature dictionary represents a DocTimeStamp, FALSE otherwise

isSignature

protected boolean isSignature(PdfSignatureDictionary pdfSigDict)

Checks if the given signature dictionary represents a Signature

Parameters:

pdfSigDict - PdfSignatureDictionary to check

Returns:

TRUE if the signature dictionary represents a Signature, FALSE otherwise

buildKnownObjects

protected Map<String,Long> buildKnownObjects(List<DSSDictionaryCallback> callbacks)

This method builds a Map of known Objects (extracted from previous DSS Dictionaries). This map will be used to avoid duplicate the same objects between layers.

Parameters:

callbacks -

Returns:

getTokenDigest

protected String getTokenDigest(Token token)