Package org.bouncycastle.crypto

Examples of org.bouncycastle.crypto.Digest

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     *
     **/
    public AuthorityKeyIdentifier(
        SubjectPublicKeyInfo    spki)
    {
        Digest  digest = new SHA1Digest();
        byte[]  resBuf = new byte[digest.getDigestSize()];

        byte[] bytes = spki.getPublicKeyData().getBytes();
        digest.update(bytes, 0, bytes.length);
        digest.doFinal(resBuf, 0);
        this.keyidentifier = new DEROctetString(resBuf);
    }
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    public AuthorityKeyIdentifier(
        SubjectPublicKeyInfo    spki,
        GeneralNames            name,
        BigInteger              serialNumber)
    {
        Digest  digest = new SHA1Digest();
        byte[]  resBuf = new byte[digest.getDigestSize()];

        byte[] bytes = spki.getPublicKeyData().getBytes();
        digest.update(bytes, 0, bytes.length);
        digest.doFinal(resBuf, 0);

        this.keyidentifier = new DEROctetString(resBuf);
        this.certissuer = GeneralNames.getInstance(name.toASN1Object());
        this.certserno = new DERInteger(serialNumber);
    }
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{
    public byte[] calculateFingerprint(PublicKeyPacket publicPk)
        throws PGPException
    {
        BCPGKey key = publicPk.getKey();
        Digest digest;

        if (publicPk.getVersion() <= 3)
        {
            RSAPublicBCPGKey rK = (RSAPublicBCPGKey)key;

            try
            {
                digest = new MD5Digest();

                byte[]  bytes = new MPInteger(rK.getModulus()).getEncoded();
                digest.update(bytes, 2, bytes.length - 2);

                bytes = new MPInteger(rK.getPublicExponent()).getEncoded();
                digest.update(bytes, 2, bytes.length - 2);
            }
            catch (IOException e)
            {
                throw new PGPException("can't encode key components: " + e.getMessage(), e);
            }
        }
        else
        {
            try
            {
                byte[]             kBytes = publicPk.getEncodedContents();

                digest = new SHA1Digest();

                digest.update((byte)0x99);
                digest.update((byte)(kBytes.length >> 8));
                digest.update((byte)kBytes.length);
                digest.update(kBytes, 0, kBytes.length);
            }
            catch (IOException e)
            {
                throw new PGPException("can't encode key components: " + e.getMessage(), e);
            }
        }

        byte[] digBuf = new byte[digest.getDigestSize()];

        digest.doFinal(digBuf, 0);

        return digBuf;
    }
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    implements PGPDigestCalculatorProvider
{
    public PGPDigestCalculator get(final int algorithm)
        throws PGPException
    {
        final Digest dig = BcImplProvider.createDigest(algorithm);

        final DigestOutputStream stream = new DigestOutputStream(dig);

        return new PGPDigestCalculator()
        {
            public int getAlgorithm()
            {
                return algorithm;
            }

            public OutputStream getOutputStream()
            {
                return stream;
            }

            public byte[] getDigest()
            {
                return stream.getDigest();
            }

            public void reset()
            {
                dig.reset();
            }
        };
    }
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    private void initFromSpec(
        OAEPParameterSpec pSpec)
        throws NoSuchPaddingException
    {
        MGF1ParameterSpec   mgfParams = (MGF1ParameterSpec)pSpec.getMGFParameters();
        Digest              digest = JCEDigestUtil.getDigest(mgfParams.getDigestAlgorithm());
       
        if (digest == null)
        {
            throw new NoSuchPaddingException("no match on OAEP constructor for digest algorithm: "+ mgfParams.getDigestAlgorithm());
        }
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                if (!(spec.getMGFParameters() instanceof MGF1ParameterSpec))
                {
                    throw new InvalidAlgorithmParameterException("unkown MGF parameters");
                }
   
                Digest digest = JCEDigestUtil.getDigest(spec.getDigestAlgorithm());

                if (digest == null)
                {
                    throw new InvalidAlgorithmParameterException("no match on digest algorithm: "+ spec.getDigestAlgorithm());
                }

                MGF1ParameterSpec mgfParams = (MGF1ParameterSpec)spec.getMGFParameters();
                Digest mgfDigest = JCEDigestUtil.getDigest(mgfParams.getDigestAlgorithm());
               
                if (mgfDigest == null)
                {
                    throw new InvalidAlgorithmParameterException("no match on MGF digest algorithm: "+ mgfParams.getDigestAlgorithm());
                }
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      return false;
    }

    ECDSAParameters initParams = getECDSAParameters(header.getAlgorithm());
    X9ECParameters x9ECParameters = initParams.getX9ECParameters();
    Digest digest = initParams.getDigest();

    byte[] signatureBytes = signature.decode();

    // Split signature into R and S parts
    int rsByteArrayLength = ECDSAProvider.getSignatureByteArrayLength(header.getAlgorithm());

    byte[] rBytes = new byte[rsByteArrayLength / 2];
    byte[] sBytes = new byte[rsByteArrayLength / 2];

    try {
      System.arraycopy(signatureBytes, 0, rBytes, 0, rBytes.length);
      System.arraycopy(signatureBytes, rBytes.length, sBytes, 0, sBytes.length);

    } catch (Exception e) {

      throw new JOSEException("Invalid ECDSA signature format: " + e.getMessage(), e);
    }

    BigInteger r = new BigInteger(1, rBytes);
    BigInteger s = new BigInteger(1, sBytes);


    ECCurve curve = x9ECParameters.getCurve();
    ECPoint q = curve.createPoint(x, y);

    ECDomainParameters ecDomainParameters = new ECDomainParameters(
      curve,
      x9ECParameters.getG(),
      x9ECParameters.getN(),
      x9ECParameters.getH(),
      x9ECParameters.getSeed());

    ECPublicKeyParameters ecPublicKeyParameters = new ECPublicKeyParameters(
      q, ecDomainParameters);

    org.bouncycastle.crypto.signers.ECDSASigner verifier =
      new org.bouncycastle.crypto.signers.ECDSASigner();

    verifier.init(false, ecPublicKeyParameters);

    digest.update(signedContent, 0, signedContent.length);
    byte[] out = new byte[digest.getDigestSize()];
    digest.doFinal(out, 0);

    return verifier.verifySignature(out, r, s);
  }
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            DigestInputStream  dgIn = new DigestInputStream(cIn, new SHA1Digest());
   
            this.loadStore(dgIn);
   
            Digest  dig = dgIn.getDigest();
            int     digSize = dig.getDigestSize();
            byte[]  hash = new byte[digSize];
            byte[]  oldHash = new byte[digSize];
   
            dig.doFinal(hash, 0);
   
            for (int i = 0; i != digSize; i++)
            {
                oldHash[i] = (byte)cIn.read();
            }
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            CipherOutputStream  cOut = new CipherOutputStream(dOut, cipher);
            DigestOutputStream  dgOut = new DigestOutputStream(cOut, new SHA1Digest());
   
            this.saveStore(dgOut);
   
            Digest  dig = dgOut.getDigest();
            byte[]  hash = new byte[dig.getDigestSize()];
   
            dig.doFinal(hash, 0);
   
            cOut.write(hash);
   
            cOut.close();
        }
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     *
     **/
    public AuthorityKeyIdentifier(
        SubjectPublicKeyInfo    spki)
    {
        Digest  digest = new SHA1Digest();
        byte[]  resBuf = new byte[digest.getDigestSize()];

        byte[] bytes = spki.getPublicKeyData().getBytes();
        digest.update(bytes, 0, bytes.length);
        digest.doFinal(resBuf, 0);
        this.keyidentifier = new DEROctetString(resBuf);
    }
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Related Classes of org.bouncycastle.crypto.Digest

  • com.nimbusds.jose.crypto.ECDSAProvider
  • com.nimbusds.jose.crypto.ECDSASigner
  • com.nimbusds.jose.crypto.ECDSAVerifier
  • org.bouncycastle.asn1.x509.AuthorityKeyIdentifier
  • org.bouncycastle.asn1.x509.SubjectKeyIdentifier
  • org.bouncycastle.crypto.examples.JPAKEExample
  • org.bouncycastle.crypto.generators.DSAParametersGenerator
  • org.bouncycastle.crypto.test.ISO9796Test
  • org.bouncycastle.crypto.test.MD2DigestTest
  • org.bouncycastle.crypto.test.MD4DigestTest
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