Example usage for org.bouncycastle.cms SignerInfoGenerator SignerInfoGenerator

Introduction

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

Prototype

public SignerInfoGenerator(SignerInfoGenerator original, CMSAttributeTableGenerator sAttrGen,
            CMSAttributeTableGenerator unsAttrGen) 

Source Link

Usage

From source file:net.sf.keystore_explorer.crypto.signing.JarSigner.java

License:Open Source License

private static byte[] createSignatureBlock(byte[] toSign, PrivateKey privateKey,
        X509Certificate[] certificateChain, SignatureType signatureType, String tsaUrl, Provider provider)
        throws CryptoException {

    try {//from ww  w.  j a va  2 s  .co m
        List<X509Certificate> certList = new ArrayList<X509Certificate>();

        Collections.addAll(certList, certificateChain);

        DigestCalculatorProvider digCalcProv = new JcaDigestCalculatorProviderBuilder().setProvider("BC")
                .build();
        JcaContentSignerBuilder csb = new JcaContentSignerBuilder(signatureType.jce())
                .setSecureRandom(SecureRandom.getInstance("SHA1PRNG"));
        if (provider != null) {
            csb.setProvider(provider);
        }
        JcaSignerInfoGeneratorBuilder siGeneratorBuilder = new JcaSignerInfoGeneratorBuilder(digCalcProv);

        // remove cmsAlgorithmProtect for compatibility reasons
        SignerInfoGenerator sigGen = siGeneratorBuilder.build(csb.build(privateKey), certificateChain[0]);
        final CMSAttributeTableGenerator sAttrGen = sigGen.getSignedAttributeTableGenerator();
        sigGen = new SignerInfoGenerator(sigGen, new DefaultSignedAttributeTableGenerator() {
            @Override
            public AttributeTable getAttributes(@SuppressWarnings("rawtypes") Map parameters) {
                AttributeTable ret = sAttrGen.getAttributes(parameters);
                return ret.remove(CMSAttributes.cmsAlgorithmProtect);
            }
        }, sigGen.getUnsignedAttributeTableGenerator());

        CMSSignedDataGenerator dataGen = new CMSSignedDataGenerator();
        dataGen.addSignerInfoGenerator(sigGen);
        dataGen.addCertificates(new JcaCertStore(certList));

        CMSSignedData signedData = dataGen.generate(new CMSProcessableByteArray(toSign), true);

        // now let TSA time-stamp the signature
        if (tsaUrl != null && !tsaUrl.isEmpty()) {
            signedData = addTimestamp(tsaUrl, signedData);
        }

        return signedData.getEncoded();
    } catch (Exception ex) {
        throw new CryptoException(res.getString("SignatureBlockCreationFailed.exception.message"), ex);
    }
}

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