Example usage for org.bouncycastle.cms SignerInfoGenerator generate

Introduction

In this page you can find the example usage for org.bouncycastle.cms SignerInfoGenerator generate.

Prototype

public SignerInfo generate(ASN1ObjectIdentifier contentType) throws CMSException 

Source Link

Usage

From source file:net.jsign.asn1.authenticode.AuthenticodeSignedDataGenerator.java

License:Apache License

public CMSSignedData generate(ASN1ObjectIdentifier contentTypeOID, ASN1Encodable content)
        throws CMSException, IOException {
    digests.clear();//from w w w  . j  a  va2s  .  co m

    SignerInfo signerInfo;

    if (!_signers.isEmpty()) {
        signerInfo = ((SignerInformation) _signers.get(0)).toASN1Structure();
    } else {
        SignerInfoGenerator signerInfoGenerator = (SignerInfoGenerator) signerGens.get(0);

        byte[] signedContent = content.toASN1Primitive().getEncoded("DER");

        OutputStream out = signerInfoGenerator.getCalculatingOutputStream();
        out.write(signedContent, 2, signedContent.length - 2); // skip the first 2 bytes as specified
        out.flush();
        out.close();

        signerInfo = signerInfoGenerator.generate(contentTypeOID);

        byte[] calculatedDigest = signerInfoGenerator.getCalculatedDigest();
        digests.put(signerInfoGenerator.getDigestAlgorithm().getAlgorithm().getId(), calculatedDigest);
    }

    ContentInfo encInfo = new ContentInfo(contentTypeOID, content);
    ASN1Set certificates = new DERSet((ASN1Encodable[]) certs.toArray(new ASN1Encodable[0]));

    ASN1Encodable signedData = new AuthenticodeSignedData(signerInfo.getDigestAlgorithm(), encInfo,
            certificates, signerInfo);

    ContentInfo contentInfo = new ContentInfo(CMSObjectIdentifiers.signedData, signedData);

    return new CMSSignedData(
            new CMSProcessableByteArray(contentTypeOID, content.toASN1Primitive().getEncoded("DER")),
            contentInfo);
}

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From source file:org.votingsystem.signature.util.PDFContentSigner.java

License:Open Source License

public CMSSignedData genSignedData(byte[] signatureHash, CMSAttributeTableGenerator unsAttr) throws Exception {
    CMSProcessable content = new CMSProcessableByteArray(signatureHash);
    ByteArrayOutputStream out = null;
    if (content != null) {
        out = new ByteArrayOutputStream();
        content.write(out);//from w  w  w.j  av  a  2 s .c o  m
        out.close();
    }
    ByteArrayInputStream bais = new ByteArrayInputStream(out.toByteArray());
    MessageDigest softwareDigestEngine = MessageDigest.getInstance(signatureDigestAlg);
    int bytesRead;
    byte[] dataBuffer = new byte[4096];
    while ((bytesRead = bais.read(dataBuffer)) >= 0) {
        softwareDigestEngine.update(dataBuffer, 0, bytesRead);
    }
    byte[] hash = softwareDigestEngine.digest();
    CertStore certsAndCRLs = CertStore.getInstance(CERT_STORE_TYPE,
            new CollectionCertStoreParameters(Arrays.asList(signerCertChain)), ContextVS.PROVIDER);
    addCertificatesAndCRLs(certsAndCRLs);
    CMSAttributeTableGenerator sAttr = new DefaultSignedAttributeTableGenerator();
    ASN1ObjectIdentifier contentTypeOID = new ASN1ObjectIdentifier(CMSSignedGenerator.DATA);
    Map parameters = getBaseParameters(contentTypeOID,
            new AlgorithmIdentifier(new DERObjectIdentifier(pdfDigestObjectIdentifier), new DERNull()), hash);
    AttributeTable attributeTable = sAttr.getAttributes(Collections.unmodifiableMap(parameters));
    //String signatureHashStr = new String(Base64.encode(signatureHash));
    JcaSimpleSignerInfoGeneratorBuilder jcaSignerInfoGeneratorBuilder = new JcaSimpleSignerInfoGeneratorBuilder();
    jcaSignerInfoGeneratorBuilder = jcaSignerInfoGeneratorBuilder.setProvider(ContextVS.PROVIDER);
    jcaSignerInfoGeneratorBuilder.setSignedAttributeGenerator(attributeTable);
    jcaSignerInfoGeneratorBuilder.setUnsignedAttributeGenerator(unsAttr);
    SignerInfoGenerator signerInfoGenerator = jcaSignerInfoGeneratorBuilder.build(signatureMechanism,
            privateKey, userCert);
    SignerInfo signerInfo = signerInfoGenerator.generate(contentTypeOID);
    List<SignerInfo> signerInfoList = new ArrayList<SignerInfo>();
    signerInfoList.add(signerInfo);
    log.info(" -- userCert: " + userCert.getSubjectDN().getName());
    CMSSignedData signedData = getCMSSignedData(CMSSignedGenerator.DATA, content, true,
            CMSUtils.getProvider("BC"), true, signerInfoList);
    return signedData;
}

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