Examples of org.bouncycastle.crypto.BlockCipher

org.bouncycastle.crypto.BlockCipher
Block cipher engines are expected to conform to this interface.

                buf[i] ^= block[i - blockSize];
            }


            if (cipher instanceof CBCBlockCipher)
            {
                BlockCipher c = ((CBCBlockCipher)cipher).getUnderlyingCipher();


                c.processBlock(buf, blockSize, out, outOff);
            }
            else
            {
                cipher.processBlock(buf, blockSize, out, outOff);
            }


            System.arraycopy(block, 0, out, outOff + blockSize, len);
        }
        else
        {
            byte[]  lastBlock = new byte[blockSize];


            if (cipher instanceof CBCBlockCipher)
            {
                BlockCipher c = ((CBCBlockCipher)cipher).getUnderlyingCipher();


                c.processBlock(buf, 0, block, 0);
            }
            else
            {
                cipher.processBlock(buf, 0, block, 0);
            }

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        if (keyParam == null)
        {
            throw new IllegalStateException("CCM cipher unitialized.");
        }
        
        BlockCipher ctrCipher = new SICBlockCipher(cipher);
        byte[] iv = new byte[blockSize];
        byte[] out;


        iv[0] = (byte)(((15 - nonce.length) - 1) & 0x7);
        
        System.arraycopy(nonce, 0, iv, 1, nonce.length);
        
        ctrCipher.init(forEncryption, new ParametersWithIV(keyParam, iv));
        
        if (forEncryption)
        {
            int index = inOff;
            int outOff = 0;
            
            out = new byte[inLen + macSize];
            
            calculateMac(in, inOff, inLen, macBlock);
            
            ctrCipher.processBlock(macBlock, 0, macBlock, 0);   // S0
            
            while (index < inLen - blockSize)                   // S1...
            {
                ctrCipher.processBlock(in, index, out, outOff);
                outOff += blockSize;
                index += blockSize;
            }
            
            byte[] block = new byte[blockSize];
            
            System.arraycopy(in, index, block, 0, inLen - index);
            
            ctrCipher.processBlock(block, 0, block, 0);
            
            System.arraycopy(block, 0, out, outOff, inLen - index);
            
            outOff += inLen - index;


            System.arraycopy(macBlock, 0, out, outOff, out.length - outOff);
        }
        else
        {
            int index = inOff;
            int outOff = 0;
            
            out = new byte[inLen - macSize];
            
            System.arraycopy(in, inOff + inLen - macSize, macBlock, 0, macSize);
            
            ctrCipher.processBlock(macBlock, 0, macBlock, 0);
            
            for (int i = macSize; i != macBlock.length; i++)
            {
                macBlock[i] = 0;
            }
            
            while (outOff < out.length - blockSize)
            {
                ctrCipher.processBlock(in, index, out, outOff);
                outOff += blockSize;
                index += blockSize;
            }
            
            byte[] block = new byte[blockSize];
            
            System.arraycopy(in, index, block, 0, out.length - outOff);
            
            ctrCipher.processBlock(block, 0, block, 0);
            
            System.arraycopy(block, 0, out, outOff, out.length - outOff);
            
            byte[] calculatedMacBlock = new byte[blockSize];

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public class AESCipherCBCnoPad {
    private BlockCipher cbc;
    
    /** Creates a new instance of AESCipher */
    public AESCipherCBCnoPad(boolean forEncryption, byte[] key) {
        BlockCipher aes = new AESFastEngine();
        cbc = new CBCBlockCipher(aes);
        KeyParameter kp = new KeyParameter(key);
        cbc.init(forEncryption, kp);
    }

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public class AESCipher {
    private PaddedBufferedBlockCipher bp;
    
    /** Creates a new instance of AESCipher */
    public AESCipher(boolean forEncryption, byte[] key, byte[] iv) {
        BlockCipher aes = new AESFastEngine();
        BlockCipher cbc = new CBCBlockCipher(aes);
        bp = new PaddedBufferedBlockCipher(cbc);
        KeyParameter kp = new KeyParameter(key);
        ParametersWithIV piv = new ParametersWithIV(kp, iv);
        bp.init(forEncryption, piv);
    }

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public class AESCipherCBCnoPad {
    private BlockCipher cbc;
    
    /** Creates a new instance of AESCipher */
    public AESCipherCBCnoPad(boolean forEncryption, byte[] key) {
        BlockCipher aes = new AESFastEngine();
        cbc = new CBCBlockCipher(aes);
        KeyParameter kp = new KeyParameter(key);
        cbc.init(forEncryption, kp);
    }

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                buf[i] ^= block[i - blockSize];
            }


            if (cipher instanceof CBCBlockCipher)
            {
                BlockCipher c = ((CBCBlockCipher)cipher).getUnderlyingCipher();


                c.processBlock(buf, blockSize, out, outOff);
            }
            else
            {
                cipher.processBlock(buf, blockSize, out, outOff);
            }


            System.arraycopy(block, 0, out, outOff + blockSize, len);
        }
        else
        {
            byte[]  lastBlock = new byte[blockSize];


            if (cipher instanceof CBCBlockCipher)
            {
                BlockCipher c = ((CBCBlockCipher)cipher).getUnderlyingCipher();


                c.processBlock(buf, 0, block, 0);
            }
            else
            {
                cipher.processBlock(buf, 0, block, 0);
            }

View Full Code Here

        byte[]          input = Hex.decode("4e6f7720");
        byte[]          out1 = new byte[4];
        byte[]          out2 = new byte[4];




        BlockCipher ofb = new OFBBlockCipher(new DESEngine(), 32);


        ofb.init(true, new ParametersWithIV(key, Hex.decode("1122334455667788")));


        ofb.processBlock(input, 0, out1, 0);


        ofb.init(false, new ParametersWithIV(key, Hex.decode("1122334455667788")));
        ofb.processBlock(out1, 0, out2, 0);


        if (!isEqualTo(out2, input))
        {
            return new SimpleTestResult(false, getName() + ": test 1 - in != out");
        }


        ofb.init(true, new ParametersWithIV(key, Hex.decode("11223344")));


        ofb.processBlock(input, 0, out1, 0);


        ofb.init(false, new ParametersWithIV(key, Hex.decode("0000000011223344")));
        ofb.processBlock(out1, 0, out2, 0);


        if (!isEqualTo(out2, input))
        {
            return new SimpleTestResult(false, getName() + ": test 2 - in != out");
        }


        BlockCipher cfb = new CFBBlockCipher(new DESEngine(), 32);


        cfb.init(true, new ParametersWithIV(key, Hex.decode("1122334455667788")));


        cfb.processBlock(input, 0, out1, 0);


        cfb.init(false, new ParametersWithIV(key, Hex.decode("1122334455667788")));
        cfb.processBlock(out1, 0, out2, 0);


        if (!isEqualTo(out2, input))
        {
            return new SimpleTestResult(false, getName() + ": test 3 - in != out");
        }


        cfb.init(true, new ParametersWithIV(key, Hex.decode("11223344")));


        cfb.processBlock(input, 0, out1, 0);


        cfb.init(false, new ParametersWithIV(key, Hex.decode("0000000011223344")));
        cfb.processBlock(out1, 0, out2, 0);


        if (!isEqualTo(out2, input))
        {
            return new SimpleTestResult(false, getName() + ": test 4 - in != out");
        }

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                buf[i] ^= block[i - blockSize];
            }


            if (cipher instanceof CBCBlockCipher)
            {
                BlockCipher c = ((CBCBlockCipher)cipher).getUnderlyingCipher();


                c.processBlock(buf, blockSize, out, outOff);
            }
            else
            {
                cipher.processBlock(buf, blockSize, out, outOff);
            }


            System.arraycopy(block, 0, out, outOff + blockSize, len);
        }
        else
        {
            byte[]  lastBlock = new byte[blockSize];


            if (cipher instanceof CBCBlockCipher)
            {
                BlockCipher c = ((CBCBlockCipher)cipher).getUnderlyingCipher();


                c.processBlock(buf, 0, block, 0);
            }
            else
            {
                cipher.processBlock(buf, 0, block, 0);
            }

View Full Code Here

    }


    public TestResult perform()
    {
        KeyParameter        key = new KeyParameter(keyBytes);
        BlockCipher         cipher = new DESEngine();
        Mac                 mac = new CBCBlockCipherMac(cipher);


        //
        // standard DAC - zero IV
        //

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public class AESCipher {
    private PaddedBufferedBlockCipher bp;
    
    /** Creates a new instance of AESCipher */
    public AESCipher(boolean forEncryption, byte[] key, byte[] iv) {
        BlockCipher aes = new AESFastEngine();
        BlockCipher cbc = new CBCBlockCipher(aes);
        bp = new PaddedBufferedBlockCipher(cbc);
        KeyParameter kp = new KeyParameter(key);
        ParametersWithIV piv = new ParametersWithIV(kp, iv);
        bp.init(forEncryption, piv);
    }

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