Package org.bouncycastle.crypto

Examples of org.bouncycastle.crypto.BufferedAsymmetricBlockCipher

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    private AlgorithmParameters             engineParams;

    public CipherSpi(
        AsymmetricBlockCipher engine)
    {
        cipher = new BufferedAsymmetricBlockCipher(engine);
    }
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        if (digest == null)
        {
            throw new NoSuchPaddingException("no match on OAEP constructor for digest algorithm: "+ mgfParams.getDigestAlgorithm());
        }

        cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), digest, ((PSource.PSpecified)pSpec.getPSource()).getValue()));       
        paramSpec = pSpec;
    }
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    {
        String pad = Strings.toUpperCase(padding);

        if (pad.equals("NOPADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new ElGamalEngine());
        }
        else if (pad.equals("PKCS1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new PKCS1Encoding(new ElGamalEngine()));
        }
        else if (pad.equals("ISO9796-1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new ISO9796d1Encoding(new ElGamalEngine()));
        }
        else if (pad.equals("OAEPPADDING"))
        {
            initFromSpec(OAEPParameterSpec.DEFAULT);
        }
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    private AlgorithmParameters             engineParams;

    public JCEElGamalCipher(
        AsymmetricBlockCipher   engine)
    {
        cipher = new BufferedAsymmetricBlockCipher(engine);
    }
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        if (digest == null)
        {
            throw new NoSuchPaddingException("no match on OAEP constructor for digest algorithm: "+ mgfParams.getDigestAlgorithm());
        }

        cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), digest, ((PSource.PSpecified)pSpec.getPSource()).getValue()));       
        paramSpec = pSpec;
    }
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    {
        String pad = Strings.toUpperCase(padding);

        if (pad.equals("NOPADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new ElGamalEngine());
        }
        else if (pad.equals("PKCS1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new PKCS1Encoding(new ElGamalEngine()));
        }
        else if (pad.equals("ISO9796-1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new ISO9796d1Encoding(new ElGamalEngine()));
        }
        else if (pad.equals("OAEPPADDING"))
        {
            initFromSpec(OAEPParameterSpec.DEFAULT);
        }
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    private AlgorithmParameters             engineParams;

    public JCEElGamalCipher(
        AsymmetricBlockCipher   engine)
    {
        cipher = new BufferedAsymmetricBlockCipher(engine);
    }
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    {
        String pad = padding.toUpperCase();

        if (pad.equals("NOPADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new ElGamalEngine());
        }
        else if (pad.equals("PKCS1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new PKCS1Encoding(new ElGamalEngine()));
        }
        else if (pad.equals("OAEPPADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine()));
        }
        else if (pad.equals("ISO9796-1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new ISO9796d1Encoding(new ElGamalEngine()));
        }
        else if (pad.equals("OAEPWITHMD5ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new MD5Digest()));
        }
        else if (pad.equals("OAEPWITHSHA1ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA1Digest()));
        }
        else if (pad.equals("OAEPWITHSHA224ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA224Digest()));
        }
        else if (pad.equals("OAEPWITHSHA256ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA256Digest()));
        }
        else if (pad.equals("OAEPWITHSHA384ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA384Digest()));
        }
        else if (pad.equals("OAEPWITHSHA512ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA512Digest()));
        }
        else
        {
            throw new NoSuchPaddingException(padding + " unavailable with ElGamal.");
        }
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        {
            AsymmetricBlockCipher c = BcImplProvider.createPublicKeyCipher(keyAlgorithm);

            AsymmetricKeyParameter key = keyConverter.getPrivateKey(privKey);

            BufferedAsymmetricBlockCipher c1 = new BufferedAsymmetricBlockCipher(c);

            c1.init(false, key);

            if (keyAlgorithm == PGPPublicKey.RSA_ENCRYPT
                || keyAlgorithm == PGPPublicKey.RSA_GENERAL)
            {
                byte[] bi = secKeyData[0].toByteArray();

                if (bi[0] == 0)
                {
                    c1.processBytes(bi, 1, bi.length - 1);
                }
                else
                {
                    c1.processBytes(bi, 0, bi.length);
                }
            }
            else
            {
                BcPGPKeyConverter converter = new BcPGPKeyConverter();
                ElGamalPrivateKeyParameters parms = (ElGamalPrivateKeyParameters) converter.getPrivateKey(privKey);
                int size = (parms.getParameters().getP().bitLength() + 7) / 8;
                byte[] tmp = new byte[size];

                byte[] bi = secKeyData[0].toByteArray();
                if (bi.length > size)
                {
                    c1.processBytes(bi, 1, bi.length - 1);
                }
                else
                {
                    System.arraycopy(bi, 0, tmp, tmp.length - bi.length, bi.length);
                    c1.processBytes(tmp, 0, tmp.length);
                }

                bi = secKeyData[1].toByteArray();
                for (int i = 0; i != tmp.length; i++)
                {
                    tmp[i] = 0;
                }

                if (bi.length > size)
                {
                    c1.processBytes(bi, 1, bi.length - 1);
                }
                else
                {
                    System.arraycopy(bi, 0, tmp, tmp.length - bi.length, bi.length);
                    c1.processBytes(tmp, 0, tmp.length);
                }
            }

            return c1.doFinal();
        }
        catch (InvalidCipherTextException e)
        {
            throw new PGPException("exception encrypting session info: " + e.getMessage(), e);
        }
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    {
        String pad = Strings.toUpperCase(padding);

        if (pad.equals("NOPADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new ElGamalEngine());
        }
        else if (pad.equals("PKCS1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new PKCS1Encoding(new ElGamalEngine()));
        }
        else if (pad.equals("OAEPPADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine()));
        }
        else if (pad.equals("ISO9796-1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new ISO9796d1Encoding(new ElGamalEngine()));
        }
        else if (pad.equals("OAEPWITHMD5ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new MD5Digest()));
        }
        else if (pad.equals("OAEPWITHSHA1ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA1Digest()));
        }
        else if (pad.equals("OAEPWITHSHA224ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA224Digest()));
        }
        else if (pad.equals("OAEPWITHSHA256ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA256Digest()));
        }
        else if (pad.equals("OAEPWITHSHA384ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA384Digest()));
        }
        else if (pad.equals("OAEPWITHSHA512ANDMGF1PADDING"))
        {
            cipher = new BufferedAsymmetricBlockCipher(new OAEPEncoding(new ElGamalEngine(), new SHA512Digest()));
        }
        else
        {
            throw new NoSuchPaddingException(padding + " unavailable with ElGamal.");
        }
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Related Classes of org.bouncycastle.crypto.BufferedAsymmetricBlockCipher

  • org.bouncycastle.jcajce.provider.asymmetric.elgamal.CipherSpi
  • org.bouncycastle.jce.provider.JCEElGamalCipher
  • org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory
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