Package org.bouncycastle.openpgp.operator

Examples of org.bouncycastle.openpgp.operator.PGPDataDecryptor

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    public static PGPDataDecryptor createDataDecryptor(boolean withIntegrityPacket, BlockCipher engine, byte[] key)
    {
        final BufferedBlockCipher c = createStreamCipher(false, engine, withIntegrityPacket, key);

        return new PGPDataDecryptor()
        {
            public InputStream getInputStream(InputStream in)
            {
                return new CipherInputStream(in, c);
            }
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            byte[]       sessionData = dataDecryptorFactory.recoverSessionData(keyData.getEncAlgorithm(), key, keyData.getSecKeyData());
            byte[]       sessionKey = new byte[sessionData.length - 1];

            System.arraycopy(sessionData, 1, sessionKey, 0, sessionKey.length);

            PGPDataDecryptor dataDecryptor = dataDecryptorFactory.createDataDecryptor(withIntegrityPacket, sessionData[0] & 0xff, sessionKey);

            encStream = new BCPGInputStream(dataDecryptor.getInputStream(encData.getInputStream()));

            if (withIntegrityPacket)
            {
                truncStream = new TruncatedStream(encStream);

                integrityCalculator = dataDecryptor.getIntegrityCalculator();

                encStream = new TeeInputStream(truncStream, integrityCalculator.getOutputStream());
            }

            byte[] iv = new byte[dataDecryptor.getBlockSize()];
            for (int i = 0; i != iv.length; i++)
            {
                int    ch = encStream.read();

                if (ch < 0)
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                boolean      withIntegrityPacket = encData instanceof SymmetricEncIntegrityPacket;
                byte[]       sessionKey = new byte[sessionData.length - 3];

                System.arraycopy(sessionData, 1, sessionKey, 0, sessionKey.length);

                PGPDataDecryptor dataDecryptor = dataDecryptorFactory.createDataDecryptor(withIntegrityPacket, sessionData[0] & 0xff, sessionKey);

                encStream = new BCPGInputStream(dataDecryptor.getInputStream(encData.getInputStream()));

                if (withIntegrityPacket)
                {
                    truncStream = new TruncatedStream(encStream);

                    integrityCalculator = dataDecryptor.getIntegrityCalculator();

                    encStream = new TeeInputStream(truncStream, integrityCalculator.getOutputStream());
                }

                byte[] iv = new byte[dataDecryptor.getBlockSize()];

                for (int i = 0; i != iv.length; i++)
                {
                    int    ch = encStream.read();
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            byte[] iv = new byte[c.getBlockSize()];

            c.init(Cipher.DECRYPT_MODE, secretKey, new IvParameterSpec(iv));

            return new PGPDataDecryptor()
            {
                public InputStream getInputStream(InputStream in)
                {
                    return new CipherInputStream(in, c);
                }
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Related Classes of org.bouncycastle.openpgp.operator.PGPDataDecryptor

  • org.bouncycastle.openpgp.operator.bc.BcUtil
  • org.bouncycastle.openpgp.operator.jcajce.OperatorHelper
  • org.bouncycastle.openpgp.PGPPBEEncryptedData
  • org.bouncycastle.openpgp.PGPPublicKeyEncryptedData
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