Package org.bouncycastle.crypto.params

Examples of org.bouncycastle.crypto.params.KeyParameter

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    {
        keySize = keySize / 8;

        byte[]  dKey = generateDerivedKey(MAC_MATERIAL, keySize);

        return new KeyParameter(dKey, 0, keySize);
    }
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            if (targetAlgorithm.startsWith("DES"))
            {
                if (param instanceof ParametersWithIV)
                {
                    KeyParameter    kParam = (KeyParameter)((ParametersWithIV)param).getParameters();

                    setOddParity(kParam.getKey());
                }
                else
                {
                    KeyParameter    kParam = (KeyParameter)param;

                    setOddParity(kParam.getKey());
                }
            }

            for (int i = 0; i != key.length; i++)
            {
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        TlsMac serverWriteMac = new TlsMac(context, serverWriteDigest, key_block, offset,
            serverWriteDigest.getDigestSize());
        offset += serverWriteDigest.getDigestSize();

        // Build keys
        KeyParameter clientWriteKey = new KeyParameter(key_block, offset, cipherKeySize);
        offset += cipherKeySize;
        KeyParameter serverWriteKey = new KeyParameter(key_block, offset, cipherKeySize);
        offset += cipherKeySize;

        if (offset != key_block_size)
        {
            throw new TlsFatalAlert(AlertDescription.internal_error);
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                ivParam = (ParametersWithIV)param;
            }
        }
        else if (params == null)
        {
            param = new KeyParameter(key.getEncoded());
        }
        else if (params instanceof IvParameterSpec)
        {
            param = new ParametersWithIV(new KeyParameter(key.getEncoded()), ((IvParameterSpec)params).getIV());
            ivParam = (ParametersWithIV)param;
        }
        else
        {
            throw new IllegalArgumentException("unknown parameter type.");
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                ivParam = (ParametersWithIV)param;
            }
        }
        else if (params == null)
        {
            param = new KeyParameter(key.getEncoded());
        }
        else if (params instanceof IvParameterSpec)
        {
            if (ivLength != 0)
            {
                IvParameterSpec p = (IvParameterSpec)params;

                if (p.getIV().length != ivLength && !isAEADModeName(modeName))
                {
                    throw new InvalidAlgorithmParameterException("IV must be " + ivLength + " bytes long.");
                }

                if (key instanceof RepeatedSecretKeySpec)
                {
                    param = new ParametersWithIV(null, p.getIV());
                    ivParam = (ParametersWithIV)param;
                }
                else
                {
                    param = new ParametersWithIV(new KeyParameter(key.getEncoded()), p.getIV());
                    ivParam = (ParametersWithIV)param;
                }
            }
            else
            {
                if (modeName != null && modeName.equals("ECB"))
                {
                    throw new InvalidAlgorithmParameterException("ECB mode does not use an IV");
                }
               
                param = new KeyParameter(key.getEncoded());
            }
        }
        else if (params instanceof GOST28147ParameterSpec)
        {
            GOST28147ParameterSpec    gost28147Param = (GOST28147ParameterSpec)params;

            param = new ParametersWithSBox(
                       new KeyParameter(key.getEncoded()), ((GOST28147ParameterSpec)params).getSbox());

            if (gost28147Param.getIV() != null && ivLength != 0)
            {
                param = new ParametersWithIV(param, gost28147Param.getIV());
                ivParam = (ParametersWithIV)param;
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        if (params instanceof ParametersWithIV)
        {
            final ParametersWithIV param = (ParametersWithIV)params;

            final byte[] iv = param.getIV();
            final KeyParameter keyParam = (KeyParameter)param.getParameters();

            // GCM is always operated in encrypt mode to calculate MAC
            cipher.init(true, new AEADParameters(keyParam, macSizeBits, iv));
        }
        else
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        // KeyParameter must contain a double or triple length DES key,
        // however the underlying cipher is a single DES. The middle and
        // right key are used only in the final step.

        KeyParameter kp;

        if (params instanceof KeyParameter)
        {
            kp = (KeyParameter)params;
        }
        else
        {
            kp = (KeyParameter)((ParametersWithIV)params).getParameters();
        }

        KeyParameter key1;
        byte[] keyvalue = kp.getKey();

        if (keyvalue.length == 16)
        { // Double length DES key
            key1 = new KeyParameter(keyvalue, 0, 8);
            this.lastKey2 = new KeyParameter(keyvalue, 8, 8);
            this.lastKey3 = key1;
        }
        else if (keyvalue.length == 24)
        { // Triple length DES key
            key1 = new KeyParameter(keyvalue, 0, 8);
            this.lastKey2 = new KeyParameter(keyvalue, 8, 8);
            this.lastKey3 = new KeyParameter(keyvalue, 16, 8);
        }
        else
        {
            throw new IllegalArgumentException(
                    "Key must be either 112 or 168 bit long");
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     * previously.
     */
    private void performEncrypt(byte[] key)
    {
        // initialise the cipher with the key bytes, for encryption
        cipher.init(true, new KeyParameter(key));

        /*
         * Create some temporary byte arrays for use in
         * encryption, make them a reasonable size so that
         * we don't spend forever reading small chunks from
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     * previously.
     */
    private void performDecrypt(byte[] key)
    {   
        // initialise the cipher for decryption
        cipher.init(false, new KeyParameter(key));

        /*
         * As the decryption is from our preformatted file,
         * and we know that it's a hex encoded format, then
         * we wrap the InputStream with a BufferedReader
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    private static byte[] SingleIterationPBKDF2(byte[] P, byte[] S, int dkLen)
    {
        PBEParametersGenerator pGen = new PKCS5S2ParametersGenerator(new SHA256Digest());
        pGen.init(P, S, 1);
        KeyParameter key = (KeyParameter) pGen.generateDerivedMacParameters(dkLen * 8);
        return key.getKey();
    }
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