Java Code Examples for org.bouncycastle.cms.CMSSignedDataGenerator#addCertificates()

@Test(description = "This test case tests extracting Certificate from the header Signature")
public void testExtractCertificateFromSignature() throws KeystoreException, CertificateEncodingException, CMSException, IOException {
    BASE64Encoder encoder = new BASE64Encoder();
    //generate and save a certificate in the keystore
    X509Certificate x509Certificate = managementService.generateX509Certificate();
    //Generate CMSdata
    CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
    List<X509Certificate> list = new ArrayList<>();
    list.add(x509Certificate);
    JcaCertStore store = new JcaCertStore(list);
    generator.addCertificates(store);
    CMSSignedData degenerateSd = generator.generate(new CMSAbsentContent());
    byte[] signature = degenerateSd.getEncoded();
    X509Certificate certificate = managementService.extractCertificateFromSignature(encoder.encode(signature));
    Assert.assertNotNull(certificate);
    Assert.assertEquals(certificate.getType(), CertificateManagementConstants.X_509);
    log.info("ExtractCertificateFromSignature Test Successful");
}
 

@Test(description = "This test case tests Signature verification of a Certificate against the keystore")
public void testVerifySignature() throws KeystoreException, CertificateEncodingException, CMSException, IOException {
    BASE64Encoder encoder = new BASE64Encoder();
    //generate and save a certificate in the keystore
    X509Certificate x509Certificate = managementService.generateX509Certificate();
    //Generate CMSdata
    CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
    List<X509Certificate> list = new ArrayList<>();
    list.add(x509Certificate);
    JcaCertStore store = new JcaCertStore(list);
    generator.addCertificates(store);
    CMSSignedData degenerateSd = generator.generate(new CMSAbsentContent());
    byte[] signature = degenerateSd.getEncoded();
    boolean verifySignature = managementService.verifySignature(encoder.encode(signature));
    Assert.assertNotNull(verifySignature);
    Assert.assertTrue(verifySignature);
    log.info("VerifySignature Test Successful");
}
 

/**
 * Creates the beast that can actually sign the data (for JKS, for other make it).
 */
public static CMSSignedDataGenerator createSignedDataGenerator(KeyStore keyStore, String keyAlias, String signAlgo, String keyPassword) throws KeyStoreException, OperatorCreationException, CertificateEncodingException, UnrecoverableKeyException, NoSuchAlgorithmException, CMSException {
    List<Certificate> certChain = new ArrayList<>(Arrays.asList(keyStore.getCertificateChain(keyAlias)));
    @SuppressWarnings("rawtypes")
    Store certStore = new JcaCertStore(certChain);
    Certificate cert = keyStore.getCertificate(keyAlias);
    PrivateKey privateKey = (PrivateKey) keyStore.getKey(keyAlias, keyPassword != null ? keyPassword.toCharArray() : null);
    ContentSigner signer = new JcaContentSignerBuilder(signAlgo).setProvider("BC").build(privateKey);
    CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
    DigestCalculatorProvider dcp = new JcaDigestCalculatorProviderBuilder().setProvider("BC").build();
    SignerInfoGenerator sig = new JcaSignerInfoGeneratorBuilder(dcp).build(signer, (X509Certificate) cert);
    generator.addSignerInfoGenerator(sig);
    generator.addCertificates(certStore);
    return generator;
}
 

/**
 * Copy of <code>org.apache.pdfbox.examples.signature.CreateSignatureBase.sign(InputStream)</code>
 * from the pdfbox examples artifact.
 */
@Override
public byte[] sign(InputStream content) throws IOException {
    try
    {
        List<Certificate> certList = new ArrayList<>();
        certList.addAll(Arrays.asList(chain));
        Store<?> certs = new JcaCertStore(certList);
        CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
        org.bouncycastle.asn1.x509.Certificate cert = org.bouncycastle.asn1.x509.Certificate.getInstance(chain[0].getEncoded());
        ContentSigner sha1Signer = new JcaContentSignerBuilder("SHA256WithRSA").build(pk);
        gen.addSignerInfoGenerator(new JcaSignerInfoGeneratorBuilder(new JcaDigestCalculatorProviderBuilder().build()).build(sha1Signer, new X509CertificateHolder(cert)));
        gen.addCertificates(certs);
        CMSProcessableInputStream msg = new CMSProcessableInputStream(content);
        CMSSignedData signedData = gen.generate(msg, false);
        return signedData.getEncoded();
    }
    catch (GeneralSecurityException | CMSException | OperatorCreationException e)
    {
        throw new IOException(e);
    }
}
 

@SuppressWarnings("rawtypes")
protected CMSSignedData regenerateCMSSignedData(CMSSignedData cmsSignedData, List<DSSDocument> detachedContents, Store certificatesStore,
		Store attributeCertificatesStore, Store crlsStore, Store otherRevocationInfoFormatStoreBasic, Store otherRevocationInfoFormatStoreOcsp) {
	try {

		final CMSSignedDataGenerator cmsSignedDataGenerator = new CMSSignedDataGenerator();
		cmsSignedDataGenerator.addSigners(cmsSignedData.getSignerInfos());
		cmsSignedDataGenerator.addAttributeCertificates(attributeCertificatesStore);
		cmsSignedDataGenerator.addCertificates(certificatesStore);
		cmsSignedDataGenerator.addCRLs(crlsStore);
		cmsSignedDataGenerator.addOtherRevocationInfo(id_pkix_ocsp_basic, otherRevocationInfoFormatStoreBasic);
		cmsSignedDataGenerator.addOtherRevocationInfo(id_ri_ocsp_response, otherRevocationInfoFormatStoreOcsp);
		final boolean encapsulate = cmsSignedData.getSignedContent() != null;
		if (!encapsulate) {
			// CAdES can only sign one document
			final DSSDocument doc = detachedContents.get(0);
			final CMSTypedData content = CMSUtils.getContentToBeSign(doc);
			cmsSignedData = cmsSignedDataGenerator.generate(content, encapsulate);
		} else {
			cmsSignedData = cmsSignedDataGenerator.generate(cmsSignedData.getSignedContent(), encapsulate);
		}
		return cmsSignedData;
	} catch (CMSException e) {
		throw new DSSException(e);
	}
}
 

private static byte[] generateSignatureBlock(
        SignerConfig signerConfig, byte[] signatureFileBytes)
                throws InvalidKeyException, CertificateEncodingException, SignatureException {
    JcaCertStore certs = new JcaCertStore(signerConfig.certificates);
    X509Certificate signerCert = signerConfig.certificates.get(0);
    String jcaSignatureAlgorithm =
            getJcaSignatureAlgorithm(
                    signerCert.getPublicKey(), signerConfig.signatureDigestAlgorithm);
    try {
        ContentSigner signer =
                new JcaContentSignerBuilder(jcaSignatureAlgorithm)
                .build(signerConfig.privateKey);
        CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
        gen.addSignerInfoGenerator(
                new SignerInfoGeneratorBuilder(
                        new JcaDigestCalculatorProviderBuilder().build(),
                        SignerInfoSignatureAlgorithmFinder.INSTANCE)
                        .setDirectSignature(true)
                        .build(signer, new JcaX509CertificateHolder(signerCert)));
        gen.addCertificates(certs);

        CMSSignedData sigData =
                gen.generate(new CMSProcessableByteArray(signatureFileBytes), false);

        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try (ASN1InputStream asn1 = new ASN1InputStream(sigData.getEncoded())) {
            DEROutputStream dos = new DEROutputStream(out);
            dos.writeObject(asn1.readObject());
        }
        return out.toByteArray();
    } catch (OperatorCreationException | CMSException | IOException e) {
        throw new SignatureException("Failed to generate signature", e);
    }
}
 

/**
 * Note:
 * Section 5.1 of RFC 3852 [4] requires that, the CMS SignedData version be set to 3 if certificates from
 * SignedData is present AND (any version 1 attribute certificates are present OR any SignerInfo structures
 * are version 3 OR eContentType from encapContentInfo is other than id-data). Otherwise, the CMS
 * SignedData version is required to be set to 1.
 * CMS SignedData Version is handled automatically by BouncyCastle.
 *
 * @param parameters
 *            set of the driving signing parameters
 * @param contentSigner
 *            the contentSigner to get the hash of the data to be signed
 * @param signerInfoGeneratorBuilder
 *            the builder for the signer info generator
 * @param originalSignedData
 *            the original signed data if extending an existing signature. null otherwise.
 * @return the bouncycastle signed data generator which signs the document and adds the required signed and unsigned
 *         CMS attributes
 * @throws eu.europa.esig.dss.model.DSSException
 */
protected CMSSignedDataGenerator createCMSSignedDataGenerator(final CAdESSignatureParameters parameters, final ContentSigner contentSigner,
		final SignerInfoGeneratorBuilder signerInfoGeneratorBuilder, final CMSSignedData originalSignedData) throws DSSException {
	try {
		final CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
		final SignerInfoGenerator signerInfoGenerator = getSignerInfoGenerator(signerInfoGeneratorBuilder, contentSigner, parameters);

		generator.addSignerInfoGenerator(signerInfoGenerator);

		final List<CertificateToken> certificateChain = new LinkedList<>();
		if (originalSignedData != null) {

			generator.addSigners(originalSignedData.getSignerInfos());
			generator.addAttributeCertificates(originalSignedData.getAttributeCertificates());
			generator.addCRLs(originalSignedData.getCRLs());
			generator.addOtherRevocationInfo(id_pkix_ocsp_basic, originalSignedData.getOtherRevocationInfo(id_pkix_ocsp_basic));
			generator.addOtherRevocationInfo(id_ri_ocsp_response, originalSignedData.getOtherRevocationInfo(id_ri_ocsp_response));

			final Store<X509CertificateHolder> certificates = originalSignedData.getCertificates();
			final Collection<X509CertificateHolder> certificatesMatches = certificates.getMatches(null);
			for (final X509CertificateHolder certificatesMatch : certificatesMatches) {
				final CertificateToken token = DSSASN1Utils.getCertificate(certificatesMatch);
				if (!certificateChain.contains(token)) {
					certificateChain.add(token);
				}
			}
		}

		final JcaCertStore jcaCertStore = getJcaCertStore(certificateChain, parameters);
		generator.addCertificates(jcaCertStore);
		return generator;
	} catch (CMSException | OperatorCreationException e) {
		throw new DSSException(e);
	}
}
 

/**
 * To create a encoded signature from certificate.
 *
 * @param x509Certificate Certificate that need to be encoded.
 * @return Encoded signature.
 * @throws CertificateEncodingException Certificate Encoding Exception.
 * @throws CMSException                 CMS Exception.
 * @throws IOException                  IO Exception.
 */
private String createEncodedSignature(X509Certificate x509Certificate) throws CertificateEncodingException,
        CMSException, IOException {
    CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
    List<X509Certificate> list = new ArrayList<>();
    list.add(x509Certificate);
    JcaCertStore store = new JcaCertStore(list);
    generator.addCertificates(store);
    AtomicReference<CMSSignedData> degenerateSd = new AtomicReference<>(generator.generate(new CMSAbsentContent()));
    byte[] signature = degenerateSd.get().getEncoded();
    return Base64.getEncoder().encodeToString(signature);
}
 

/** Sign data and write the digital signature to 'out'. */
private static void writeSignatureBlock(
    CMSTypedData data, X509Certificate publicKey, PrivateKey privateKey,
    OutputStream out)
throws IOException,
CertificateEncodingException,
OperatorCreationException,
CMSException {
    ArrayList < X509Certificate > certList = new ArrayList < > (1);
    certList.add(publicKey);
    JcaCertStore certs = new JcaCertStore(certList);
    CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
    ContentSigner signer = new JcaContentSignerBuilder(getSignatureAlgorithm(publicKey))
        .setProvider(sBouncyCastleProvider)
        .build(privateKey);
    gen.addSignerInfoGenerator(
        new JcaSignerInfoGeneratorBuilder(
            new JcaDigestCalculatorProviderBuilder()
            .setProvider(sBouncyCastleProvider)
            .build())
        .setDirectSignature(true)
        .build(signer, publicKey));
    gen.addCertificates(certs);
    CMSSignedData sigData = gen.generate(data, false);
    ASN1InputStream asn1 = new ASN1InputStream(sigData.getEncoded());
    DEROutputStream dos = new DEROutputStream(out);
    dos.writeObject(asn1.readObject());
}
 

public static byte[] signData(byte[] data, final X509Certificate signingCertificate, final PrivateKey signingKey) throws CertificateEncodingException, OperatorCreationException, CMSException, IOException {
    byte[] signedMessage = null;
    List<X509Certificate> certList = new ArrayList<X509Certificate>();
    CMSTypedData cmsData = new CMSProcessableByteArray(data);
    certList.add(signingCertificate);
    Store certs = new JcaCertStore(certList);
    CMSSignedDataGenerator cmsGenerator = new CMSSignedDataGenerator();
    ContentSigner contentSigner = new JcaContentSignerBuilder("SHA256withRSA").build(signingKey);
    cmsGenerator.addSignerInfoGenerator(new JcaSignerInfoGeneratorBuilder(new JcaDigestCalculatorProviderBuilder().setProvider("BC").build()).build(contentSigner, signingCertificate));
    cmsGenerator.addCertificates(certs);
    CMSSignedData cms = cmsGenerator.generate(cmsData, true);
    signedMessage = cms.getEncoded();
    return signedMessage;
}
 

public byte[] sign(Credential signatureCredential, byte[] byteToSign, Map<String, Object> options) throws TechnicalConnectorException {
   byte[] contentToSign = ArrayUtils.clone(byteToSign);
   Map<String, Object> optionMap = new HashMap();
   if (options != null) {
      optionMap.putAll(options);
   }

   this.validateInput(signatureCredential, contentToSign);

   try {
      CMSTypedData content = new CMSProcessableByteArray(contentToSign);
      CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
      String signatureAlgorithm = (String)SignatureUtils.getOption("signatureAlgorithm", optionMap, "Sha1WithRSA");
      JcaSignerInfoGeneratorBuilder signerInfoGeneratorBuilder = new JcaSignerInfoGeneratorBuilder((new JcaDigestCalculatorProviderBuilder()).build());
      ContentSigner contentSigner = (new JcaContentSignerBuilder(signatureAlgorithm)).build(signatureCredential.getPrivateKey());
      CMSAttributeTableGenerator cmsAttributeTableGenerator = (CMSAttributeTableGenerator)SignatureUtils.getOption("signedAttributeGenerator", optionMap, new DefaultSignedAttributeTableGenerator());
      signerInfoGeneratorBuilder.setSignedAttributeGenerator(cmsAttributeTableGenerator);
      generator.addSignerInfoGenerator(signerInfoGeneratorBuilder.build(contentSigner, signatureCredential.getCertificate()));
      Certificate[] certificateChain = signatureCredential.getCertificateChain();
      if (certificateChain != null && certificateChain.length > 0) {
         generator.addCertificates(new JcaCertStore(Arrays.asList(certificateChain)));
      }

      boolean encapsulate = (Boolean)SignatureUtils.getOption("encapsulate", optionMap, Boolean.FALSE);
      return generator.generate(content, encapsulate).getEncoded();
   } catch (Exception var14) {
      LOG.error(var14.getMessage(), var14);
      throw new TechnicalConnectorException(TechnicalConnectorExceptionValues.ERROR_SIGNATURE, var14, new Object[]{var14.getClass().getSimpleName() + " : " + var14.getMessage()});
   }
}
 

/**
 * Write the certificate file with a digital signature.
 */
private void writeSignatureBlock(CMSTypedData data,
                                 X509Certificate publicKey,
                                 PrivateKey privateKey) throws IOException, CertificateEncodingException, OperatorCreationException, CMSException {

    ArrayList<X509Certificate> certList = new ArrayList<X509Certificate>();
    certList.add(publicKey);
    JcaCertStore certs = new JcaCertStore(certList);

    CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
    ContentSigner sha1Signer = new JcaContentSignerBuilder("SHA1with" +
                                                                   privateKey.getAlgorithm()).build(
            privateKey);
    gen.addSignerInfoGenerator(new JcaSignerInfoGeneratorBuilder(new JcaDigestCalculatorProviderBuilder()
                                                                         .build()).setDirectSignature(
            true).build(sha1Signer, publicKey));
    gen.addCertificates(certs);
    CMSSignedData sigData = gen.generate(data, false);

    ASN1InputStream asn1 = new ASN1InputStream(sigData.getEncoded());
    DEROutputStream dos = new DEROutputStream(mOutputJar);
    dos.writeObject(asn1.readObject());

    dos.flush();
    dos.close();
    asn1.close();
}
 

public static CMSSignedDataGenerator createSignedDataGenerator(PrivateKey privateKey, Certificate cert, List<Certificate> certChain, String signAlgo) throws OperatorCreationException, CertificateEncodingException, CMSException {
    @SuppressWarnings("rawtypes")
    Store certStore = new JcaCertStore(certChain);
    ContentSigner signer = new JcaContentSignerBuilder(signAlgo).setProvider("BC").build(privateKey);
    CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
    DigestCalculatorProvider dcp = new JcaDigestCalculatorProviderBuilder().setProvider("BC").build();
    SignerInfoGenerator sig = new JcaSignerInfoGeneratorBuilder(dcp).build(signer, (X509Certificate) cert);
    generator.addSignerInfoGenerator(sig);
    generator.addCertificates(certStore);
    return generator;
}
 

public byte[] sign(Credential signatureCredential, byte[] byteToSign, Map<String, Object> options) throws TechnicalConnectorException {
   byte[] contentToSign = ArrayUtils.clone(byteToSign);
   Map<String, Object> optionMap = new HashMap();
   if (options != null) {
      optionMap.putAll(options);
   }

   this.validateInput(signatureCredential, contentToSign);

   try {
      CMSTypedData content = new CMSProcessableByteArray(contentToSign);
      CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
      String signatureAlgorithm = (String)SignatureUtils.getOption("signatureAlgorithm", optionMap, "Sha1WithRSA");
      JcaSignerInfoGeneratorBuilder signerInfoGeneratorBuilder = new JcaSignerInfoGeneratorBuilder((new JcaDigestCalculatorProviderBuilder()).build());
      ContentSigner contentSigner = (new JcaContentSignerBuilder(signatureAlgorithm)).build(signatureCredential.getPrivateKey());
      CMSAttributeTableGenerator cmsAttributeTableGenerator = (CMSAttributeTableGenerator)SignatureUtils.getOption("signedAttributeGenerator", optionMap, new DefaultSignedAttributeTableGenerator());
      signerInfoGeneratorBuilder.setSignedAttributeGenerator(cmsAttributeTableGenerator);
      generator.addSignerInfoGenerator(signerInfoGeneratorBuilder.build(contentSigner, signatureCredential.getCertificate()));
      Certificate[] certificateChain = signatureCredential.getCertificateChain();
      if (certificateChain != null && certificateChain.length > 0) {
         generator.addCertificates(new JcaCertStore(Arrays.asList(certificateChain)));
      }

      boolean encapsulate = (Boolean) SignatureUtils.getOption("encapsulate", optionMap, Boolean.FALSE);
      return generator.generate(content, encapsulate).getEncoded();
   } catch (Exception var14) {
      LOG.error(var14.getMessage(), var14);
      throw new TechnicalConnectorException(TechnicalConnectorExceptionValues.ERROR_SIGNATURE, var14, new Object[]{var14.getClass().getSimpleName() + " : " + var14.getMessage()});
   }
}
 

/**
 * Sign the given content using the private and public keys from the keySet, and return the encoded CMS (PKCS#7) data.
 * Use of direct signature and DER encoding produces a block that is verifiable by Android recovery programs.
 */
public static byte[] generate(KeySet keySet, byte[] content) {
    try {
        List certList = new ArrayList();
        CMSTypedData msg = new CMSProcessableByteArray(content);

        certList.add(keySet.getPublicKey());

        Store certs = new JcaCertStore(certList);

        CMSSignedDataGenerator gen = new CMSSignedDataGenerator();

        JcaContentSignerBuilder jcaContentSignerBuilder = new JcaContentSignerBuilder(keySet.getSignatureAlgorithm()).setProvider("BC");
        ContentSigner sha1Signer = jcaContentSignerBuilder.build(keySet.getPrivateKey());

        JcaDigestCalculatorProviderBuilder jcaDigestCalculatorProviderBuilder = new JcaDigestCalculatorProviderBuilder().setProvider("BC");
        DigestCalculatorProvider digestCalculatorProvider = jcaDigestCalculatorProviderBuilder.build();

        JcaSignerInfoGeneratorBuilder jcaSignerInfoGeneratorBuilder = new JcaSignerInfoGeneratorBuilder(digestCalculatorProvider);
        jcaSignerInfoGeneratorBuilder.setDirectSignature(true);
        SignerInfoGenerator signerInfoGenerator = jcaSignerInfoGeneratorBuilder.build(sha1Signer, keySet.getPublicKey());

        gen.addSignerInfoGenerator(signerInfoGenerator);

        gen.addCertificates(certs);

        CMSSignedData sigData = gen.generate(msg, false);
        return sigData.toASN1Structure().getEncoded("DER");

    } catch (Exception x) {
        throw new RuntimeException(x.getMessage(), x);
    }
}
 

public byte[] sign(Credential signatureCredential, byte[] byteToSign, Map<String, Object> options) throws TechnicalConnectorException {
   byte[] contentToSign = ArrayUtils.clone(byteToSign);
   Map<String, Object> optionMap = new HashMap();
   if (options != null) {
      optionMap.putAll(options);
   }

   this.validateInput(signatureCredential, contentToSign);

   try {
      CMSTypedData content = new CMSProcessableByteArray(contentToSign);
      CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
      String signatureAlgorithm = (String)SignatureUtils.getOption("signatureAlgorithm", optionMap, "Sha1WithRSA");
      JcaSignerInfoGeneratorBuilder signerInfoGeneratorBuilder = new JcaSignerInfoGeneratorBuilder((new JcaDigestCalculatorProviderBuilder()).build());
      ContentSigner contentSigner = (new JcaContentSignerBuilder(signatureAlgorithm)).build(signatureCredential.getPrivateKey());
      CMSAttributeTableGenerator cmsAttributeTableGenerator = (CMSAttributeTableGenerator)SignatureUtils.getOption("signedAttributeGenerator", optionMap, new DefaultSignedAttributeTableGenerator());
      signerInfoGeneratorBuilder.setSignedAttributeGenerator(cmsAttributeTableGenerator);
      generator.addSignerInfoGenerator(signerInfoGeneratorBuilder.build(contentSigner, signatureCredential.getCertificate()));
      Certificate[] certificateChain = signatureCredential.getCertificateChain();
      if (certificateChain != null && certificateChain.length > 0) {
         generator.addCertificates(new JcaCertStore(Arrays.asList(certificateChain)));
      }

      boolean encapsulate = ((Boolean)SignatureUtils.getOption("encapsulate", optionMap, Boolean.FALSE));
      return generator.generate(content, encapsulate).getEncoded();
   } catch (Exception var14) {
      LOG.error(var14.getMessage(), var14);
      throw new TechnicalConnectorException(TechnicalConnectorExceptionValues.ERROR_SIGNATURE, var14, new Object[]{var14.getClass().getSimpleName() + " : " + var14.getMessage()});
   }
}
 

public static void addCmsCertSet(CMSSignedDataGenerator generator, X509Cert[] cmsCertSet)
    throws CertificateEncodingException, CMSException {
  if (cmsCertSet == null || cmsCertSet.length == 0) {
    return;
  }
  Args.notNull(generator, "geneator");
  Collection<X509CertificateHolder> certColl = new LinkedList<>();
  for (X509Cert m : cmsCertSet) {
    certColl.add(m.toBcCert());
  }

  JcaCertStore certStore = new JcaCertStore(certColl);
  generator.addCertificates(certStore);
}
 

/**
     * Signs a time stamp request
     *
     * @param privateKey private key to sign with
     * @param certificates certificate chain
     * @param request request to be signed
     * @return The signed request
     */
    public byte[] signRequest(PrivateKey privateKey, Certificate[] certificates, byte[] request, String algorithm) {
        try {
            logger.info(timeStampMessagesBundle.getString("info.timestamp.sign.request"));
            Security.addProvider(new BouncyCastleProvider());

            X509Certificate signCert = (X509Certificate) certificates[0];
            List<X509Certificate> certList = new ArrayList<>();
            certList.add(signCert);

            // setup the generator
            CMSSignedDataGenerator generator = new CMSSignedDataGenerator();
            String varAlgorithm = null;
            if (algorithm != null && !algorithm.isEmpty()){
            	varAlgorithm = algorithm;
            }else{
            	
            	// If is WINDOWS, is ONLY WORKS with SHA256
				if (Configuration.getInstance().getSO().toLowerCase().indexOf("indows") > 0) {
					logger.info(timeStampMessagesBundle.getString("info.timestamp.winhash"));
					
					varAlgorithm = "SHA256withRSA";
				}else{
					logger.info(timeStampMessagesBundle.getString("info.timestamp.linuxhash"));					
					varAlgorithm = "SHA512withRSA";
				}
				
            }
            	
            SignerInfoGenerator signerInfoGenerator = new JcaSimpleSignerInfoGeneratorBuilder().build(varAlgorithm, privateKey, signCert);
            generator.addSignerInfoGenerator(signerInfoGenerator);

            Store<?> certStore = new JcaCertStore(certList);
            generator.addCertificates(certStore);

//            Store crlStore = new JcaCRLStore(crlList);
//            generator.addCRLs(crlStore);
            // Create the signed data object
            CMSTypedData data = new CMSProcessableByteArray(request);
            CMSSignedData signed = generator.generate(data, true);
            return signed.getEncoded();

        } catch (CMSException | IOException | OperatorCreationException | CertificateEncodingException ex) {
            logger.info(ex.getMessage());
        }
        return null;
    }
 

/**
 * For some tests I needed SHA256withRSAandMGF1 CMS signatures.
 */
@Test
public void testCreateSimpleSignatureContainer() throws CMSException, GeneralSecurityException, OperatorCreationException, IOException
{
    byte[] message = "SHA256withRSAandMGF1".getBytes();
    CMSTypedData msg = new CMSProcessableByteArray(message);

    List<X509Certificate> certList = new ArrayList<X509Certificate>();
    certList.add(origCert);
    certList.add(signCert);
    Store certs = new JcaCertStore(certList);

    CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
    ContentSigner sha1Signer = new JcaContentSignerBuilder("SHA256withRSAandMGF1").setProvider("BC").build(signKP.getPrivate());

    gen.addSignerInfoGenerator(
              new JcaSignerInfoGeneratorBuilder(
                   new JcaDigestCalculatorProviderBuilder().setProvider("BC").build())
                   .build(sha1Signer, signCert));

    gen.addCertificates(certs);

    CMSSignedData sigData = gen.generate(msg, false);
    
    
    Files.write(new File(RESULT_FOLDER, "simpleMessageSHA256withRSAandMGF1.bin").toPath(), message);
    Files.write(new File(RESULT_FOLDER, "simpleMessageSHA256withRSAandMGF1.p7s").toPath(), sigData.getEncoded());
    
    boolean verifies = sigData.verifySignatures(new SignerInformationVerifierProvider()
    {
        @Override
        public SignerInformationVerifier get(SignerId sid) throws OperatorCreationException
        {
            if (sid.getSerialNumber().equals(origCert.getSerialNumber()))
            {
                System.out.println("SignerInformationVerifier requested for OrigCert");
                return new JcaSignerInfoVerifierBuilder(new BcDigestCalculatorProvider()).build(origCert);
            }
            if (sid.getSerialNumber().equals(signCert.getSerialNumber()))
            {
                System.out.println("SignerInformationVerifier requested for SignCert");
                return new JcaSignerInfoVerifierBuilder(new BcDigestCalculatorProvider()).build(signCert);
            }
            System.out.println("SignerInformationVerifier requested for unknown " + sid);
            return null;
        }
    });
    
    System.out.println("Verifies? " + verifies);
}
 

/**
 * <a href="http://stackoverflow.com/questions/41767351/create-pkcs7-signature-from-file-digest">
 * Create pkcs7 signature from file digest
 * </a>
 * <p>
 * The OP's <code>sign</code> method after fixing some errors. The
 * OP's original method is {@link #signBySnox(InputStream)}. The
 * errors were
 * </p>
 * <ul>
 * <li>multiple attempts at reading the {@link InputStream} parameter;
 * <li>convoluted creation of final CMS container.
 * </ul>
 * <p>
 * Additionally this method uses SHA256 instead of SHA-1.
 * </p>
 */
public byte[] signWithSeparatedHashing(InputStream content) throws IOException
{
    try
    {
        // Digest generation step
        MessageDigest md = MessageDigest.getInstance("SHA256", "BC");
        byte[] digest = md.digest(IOUtils.toByteArray(content));

        // Separate signature container creation step
        List<Certificate> certList = Arrays.asList(chain);
        JcaCertStore certs = new JcaCertStore(certList);

        CMSSignedDataGenerator gen = new CMSSignedDataGenerator();

        Attribute attr = new Attribute(CMSAttributes.messageDigest,
                new DERSet(new DEROctetString(digest)));

        ASN1EncodableVector v = new ASN1EncodableVector();

        v.add(attr);

        SignerInfoGeneratorBuilder builder = new SignerInfoGeneratorBuilder(new BcDigestCalculatorProvider())
                .setSignedAttributeGenerator(new DefaultSignedAttributeTableGenerator(new AttributeTable(v)));

        AlgorithmIdentifier sha256withRSA = new DefaultSignatureAlgorithmIdentifierFinder().find("SHA256withRSA");

        CertificateFactory certFactory = CertificateFactory.getInstance("X.509");
        InputStream in = new ByteArrayInputStream(chain[0].getEncoded());
        X509Certificate cert = (X509Certificate) certFactory.generateCertificate(in);

        gen.addSignerInfoGenerator(builder.build(
                new BcRSAContentSignerBuilder(sha256withRSA,
                        new DefaultDigestAlgorithmIdentifierFinder().find(sha256withRSA))
                                .build(PrivateKeyFactory.createKey(pk.getEncoded())),
                new JcaX509CertificateHolder(cert)));

        gen.addCertificates(certs);

        CMSSignedData s = gen.generate(new CMSAbsentContent(), false);
        return s.getEncoded();
    }
    catch (Exception e)
    {
        e.printStackTrace();
        throw new IOException(e);
    }
}