Example usage for com.lowagie.text.pdf PdfName ADBE

Introduction

In this page you can find the example usage for com.lowagie.text.pdf PdfName ADBE.

Prototype

PdfName ADBE

To view the source code for com.lowagie.text.pdf PdfName ADBE.

Click Source Link

Document

A name.

Usage

From source file:eu.europa.ec.markt.dss.signature.pades.PAdESProfileLTV.java

License:Open Source License

@Override
public Document extendSignatures(Document document, Document originalData, SignatureParameters parameters)
        throws IOException {

    try {/*from  www .  j a  v  a 2s. c o m*/
        final PdfReader reader = new PdfReader(document.openStream());
        final ByteArrayOutputStream output = new ByteArrayOutputStream();
        final PdfStamper stamper = new PdfStamper(reader, output, '\0', true);

        LTVSignatureValidationCallback callback = new LTVSignatureValidationCallback(stamper);
        pdfSignatureService.validateSignatures(document.openStream(), callback);

        PdfIndirectReference certsRef = stamper.getWriter().getPdfIndirectReference();
        stamper.getWriter().addToBody(callback.getCertsArray(), certsRef, false);

        PdfDictionary dssDictionary = new PdfDictionary(new PdfName("DSS"));
        PdfDictionary vriDictionary = new PdfDictionary(new PdfName("VRI"));

        PdfDictionary sigVriDictionary = new PdfDictionary();

        integrateCRL(callback, stamper, dssDictionary, sigVriDictionary, sigVriDictionary);

        integrateOCSP(callback, stamper, dssDictionary, sigVriDictionary, sigVriDictionary);

        // Add the signature's VRI dictionary, hashing the signature block from the callback method
        MessageDigest _md = MessageDigest.getInstance(DigestAlgorithm.SHA1.getName());
        String hexHash = Hex.encodeHexString(_md.digest(callback.getSignatureBlock())).toUpperCase();

        PdfIndirectReference sigVriRef = stamper.getWriter().getPdfIndirectReference();
        stamper.getWriter().addToBody(sigVriDictionary, sigVriRef, false);
        vriDictionary.put(new PdfName(hexHash), sigVriRef);
        PdfIndirectReference vriRef = stamper.getWriter().getPdfIndirectReference();
        stamper.getWriter().addToBody(vriDictionary, vriRef, false);

        // Add final objects to DSS dictionary
        dssDictionary.put(new PdfName("VRI"), vriRef);
        dssDictionary.put(new PdfName("Certs"), certsRef);

        PdfIndirectReference dssRef = stamper.getWriter().getPdfIndirectReference();
        stamper.getWriter().addToBody(dssDictionary, dssRef, false);
        reader.getCatalog().put(new PdfName("DSS"), dssRef);

        // /Extensions<</ADBE<</BaseVersion/1.7/ExtensionLevel 5>>>>
        PdfDeveloperExtension etsiExtension = new PdfDeveloperExtension(PdfName.ADBE, new PdfName("1.7"), 5);
        stamper.getWriter().addDeveloperExtension(etsiExtension);
        stamper.getWriter().addToBody(reader.getCatalog(), reader.getCatalog().getIndRef(), false);

        stamper.close();
        output.close();

        Document extendedDocument = new InMemoryDocument(output.toByteArray());

        ByteArrayOutputStream ltvDoc = new ByteArrayOutputStream();

        ITextPDFDocTimeSampService service = new ITextPDFDocTimeSampService();
        byte[] digest = service.digest(extendedDocument.openStream(), parameters);
        TimeStampResponse tsToken = tspSource.getTimeStampResponse(parameters.getDigestAlgorithm(), digest);
        service.sign(extendedDocument.openStream(), tsToken.getTimeStampToken().getEncoded(), ltvDoc,
                parameters);

        return new InMemoryDocument(ltvDoc.toByteArray());

    } catch (DocumentException ex) {
        throw new RuntimeException(ex);
    } catch (SignatureException e) {
        throw new RuntimeException(e);
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    }

}

---