Examples of org.bouncycastle.crypto.BufferedBlockCipher

org.bouncycastle.crypto.BufferedBlockCipher
A wrapper class that allows block ciphers to be used to process data in a piecemeal fashion. The BufferedBlockCipher outputs a block only when the buffer is full and more data is being added, or on a doFinal.
Note: in the case where the underlying cipher is either a CFB cipher or an OFB one the last block may not be a multiple of the block size.

                  rng.nextBytes(key);
                  rng.nextBytes(iv);
                  AESFastEngine e = new AESFastEngine();
                  SICBlockCipher ctr = new SICBlockCipher(e);
                  ctr.init(true, new ParametersWithIV(new KeyParameter(key),iv));
                  cis = new CipherInputStream(zis, new BufferedBlockCipher(ctr));
                  cisCounter = 0;
              }
              read = cis.read(buffer, 0, ((remaining > BUFFER_SIZE) || (remaining == -1)) ? BUFFER_SIZE : (int) remaining);
              cisCounter += read;
          }

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    {
        String  paddingName = Strings.toUpperCase(padding);


        if (paddingName.equals("NOPADDING"))
        {
            cipher = new BufferedBlockCipher(cipher.getUnderlyingCipher());
        }
        else if (paddingName.equals("PKCS5PADDING") || paddingName.equals("PKCS7PADDING") || paddingName.equals("ISO10126PADDING"))
        {
            cipher = new PaddedBufferedBlockCipher(cipher.getUnderlyingCipher());
        }

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            ivLength = baseEngine.getBlockSize();
            if (ivLength < 16)
            {
                throw new IllegalArgumentException("Warning: SIC-Mode can become a twotime-pad if the blocksize of the cipher is too small. Use a cipher with a block size of at least 128 bits (e.g. AES)");
            }
            cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(
                        new SICBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("CTR"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(
                        new SICBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("GOFB"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(
                        new GOFBBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("CTS"))
        {
            ivLength = baseEngine.getBlockSize();

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        if (paddingName.equals("NOPADDING"))
        {
            if (cipher.wrapOnNoPadding())
            {
                cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(cipher.getUnderlyingCipher()));
            }
        }
        else if (paddingName.equals("WITHCTS"))
        {
            cipher = new BufferedGenericBlockCipher(new CTSBlockCipher(cipher.getUnderlyingCipher()));

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    static public class CFB
        extends BaseBlockCipher
    {
        public CFB()
        {
            super(new BufferedBlockCipher(new CFBBlockCipher(new RC6Engine(), 128)), 128);
        }

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    static public class OFB
        extends BaseBlockCipher
    {
        public OFB()
        {
            super(new BufferedBlockCipher(new OFBBlockCipher(new RC6Engine(), 128)), 128);
        }

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    static public class CFB
        extends BaseBlockCipher
    {
        public CFB()
        {
            super(new BufferedBlockCipher(new CFBBlockCipher(new AESFastEngine(), 128)), 128);
        }

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    static public class OFB
        extends BaseBlockCipher
    {
        public OFB()
        {
            super(new BufferedBlockCipher(new OFBBlockCipher(new AESFastEngine(), 128)), 128);
        }

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            ivLength = baseEngine.getBlockSize();
            if (ivLength < 16)
            {
                throw new IllegalArgumentException("Warning: SIC-Mode can become a twotime-pad if the blocksize of the cipher is too small. Use a cipher with a block size of at least 128 bits (e.g. AES)");
            }
            cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(
                        new SICBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("CTR"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(
                        new SICBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("GOFB"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(
                        new GOFBBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("CTS"))
        {
            ivLength = baseEngine.getBlockSize();

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        {
            padded = false;
            
            if (cipher.wrapOnNoPadding())
            {
                cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(cipher.getUnderlyingCipher()));
            }
        }
        else if (isAEADModeName(modeName))
        {
            throw new NoSuchPaddingException("Only NoPadding can be used with AEAD modes.");

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