Package org.bouncycastle.crypto.params

Examples of org.bouncycastle.crypto.params.ParametersWithIV

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      byte[] TEMP3 = reverse(TEMP2);

      // Encrypt TEMP3 in CBC mode using the KEK and an initialization vector
      // of 0x 4a dd a2 2c 79 e8 21 05. The resulting cipher text is the desired
      // result. It is 40 octets long if a 168 bit key is being wrapped.
      ParametersWithIV param2 = new ParametersWithIV(this.param, IV2);

      this.engine.init(true, param2);

      for (int currentBytePos = 0; currentBytePos != TEMP3.length; currentBytePos += blockSize)
      {
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      }
      */

      // Decrypt the cipher text with TRIPLedeS in CBC mode using the KEK
      // and an initialization vector (IV) of 0x4adda22c79e82105. Call the output TEMP3.
      ParametersWithIV param2 = new ParametersWithIV(this.param, IV2);

      this.engine.init(false, param2);

      byte TEMP3[] = new byte[inLen];

      for (int currentBytePos = 0; currentBytePos != inLen; currentBytePos += blockSize)
      {
         engine.processBlock(in, inOff + currentBytePos, TEMP3, currentBytePos);
      }

      // Reverse the order of the octets in TEMP3 and call the result TEMP2.
      byte[] TEMP2 = reverse(TEMP3);

      // Decompose TEMP2 into IV, the first 8 octets, and TEMP1, the remaining octets.
      this.iv = new byte[8];

      byte[] TEMP1 = new byte[TEMP2.length - 8];

      System.arraycopy(TEMP2, 0, this.iv, 0, 8);
      System.arraycopy(TEMP2, 8, TEMP1, 0, TEMP2.length - 8);

      // Decrypt TEMP1 using TRIPLedeS in CBC mode using the KEK and the IV
      // found in the previous step. Call the result WKCKS.
      this.paramPlusIV = new ParametersWithIV(this.param, this.iv);

      this.engine.init(false, this.paramPlusIV);

      byte[] WKCKS = new byte[TEMP1.length];

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

        byte[]  iv = generateDerivedKey(IV_MATERIAL, ivSize);

        return new ParametersWithIV(new KeyParameter(dKey, 0, keySize), iv, 0, ivSize);
    }
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        {
            this.writeMac = serverWriteMac;
            this.readMac = clientWriteMac;
            this.encryptCipher = serverWriteCipher;
            this.decryptCipher = clientWriteCipher;
            encryptParams = new ParametersWithIV(server_write_key, server_write_IV);
            decryptParams = new ParametersWithIV(client_write_key, client_write_IV);
        }
        else
        {
            this.writeMac = clientWriteMac;
            this.readMac = serverWriteMac;
            this.encryptCipher = clientWriteCipher;
            this.decryptCipher = serverWriteCipher;
            encryptParams = new ParametersWithIV(client_write_key, client_write_IV);
            decryptParams = new ParametersWithIV(server_write_key, server_write_IV);
        }

        this.encryptCipher.init(true, encryptParams);
        this.decryptCipher.init(false, decryptParams);
    }
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        if (useExplicitIV)
        {
            byte[] explicitIV = new byte[blockSize];
            context.getSecureRandom().nextBytes(explicitIV);

            encryptCipher.init(true, new ParametersWithIV(null, explicitIV));

            System.arraycopy(explicitIV, 0, outbuf, outOff, blockSize);
            outOff += blockSize;
        }
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        }

        if (params instanceof IvParameterSpec)
        {
            IvParameterSpec iv = (IvParameterSpec) params;
            param = new ParametersWithIV(param, iv.getIV());
        }

        if (param instanceof KeyParameter && ivSize != 0)
        {
            iv = new byte[ivSize];
            random.nextBytes(iv);
            param = new ParametersWithIV(param, iv);
        }

        switch (opmode)
        {
        case Cipher.WRAP_MODE:
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                throw new InvalidAlgorithmParameterException("PBE requires PBE parameters to be set.");
            }
        }
        else if (params instanceof IvParameterSpec)
        {
            param = new ParametersWithIV(new KeyParameter(key.getEncoded()), ((IvParameterSpec)params).getIV());
        }
        else if (params == null)
        {
            param = new KeyParameter(key.getEncoded());
        }
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        byte[] iv = new byte[blockSize];

        System.arraycopy(in, inOff, cekBlock, 0, inLen);
        System.arraycopy(in, inOff, iv, 0, iv.length);
       
        engine.init(false, new ParametersWithIV(param.getParameters(), iv));

        for (int i = blockSize; i < cekBlock.length; i += blockSize)
        {
            engine.processBlock(cekBlock, i, cekBlock, i);   
        }

        System.arraycopy(cekBlock, cekBlock.length - iv.length, iv, 0, iv.length);

        engine.init(false, new ParametersWithIV(param.getParameters(), iv));

        engine.processBlock(cekBlock, 0, cekBlock, 0);

        engine.init(false, param);
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            throw new TlsFatalAlert(AlertDescription.decryption_failed);
        }

        if (useExplicitIV)
        {
            decryptCipher.init(false, new ParametersWithIV(null, ciphertext, offset, blockSize));

            offset += blockSize;
            len -= blockSize;
        }
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        if (!(params instanceof ParametersWithIV))
        {
            throw new IllegalArgumentException("Salsa20 Init parameters must include an IV");
        }

        ParametersWithIV ivParams = (ParametersWithIV) params;

        byte[] iv = ivParams.getIV();

        if (iv == null || iv.length != 8)
        {
            throw new IllegalArgumentException("Salsa20 requires exactly 8 bytes of IV");
        }

        if (!(ivParams.getParameters() instanceof KeyParameter))
        {
            throw new IllegalArgumentException("Salsa20 Init parameters must include a key");
        }

        KeyParameter key = (KeyParameter) ivParams.getParameters();

        workingKey = key.getKey();
        workingIV = iv;

        setKey(workingKey, workingIV);
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