Examples of BlockCipher

ch.ethz.ssh2.crypto.cipher.BlockCipher
BlockCipher. @author Christian Plattner, plattner@inf.ethz.ch @version $Id: BlockCipher.java,v 1.1 2005/05/26 14:53:27 cplattne Exp $
com.trilead.ssh2.crypto.cipher.BlockCipher
BlockCipher. @author Christian Plattner, plattner@inf.ethz.ch @version $Id: BlockCipher.java,v 1.1 2005/05/26 14:53:27 cplattne Exp $
freenet.crypt.BlockCipher
Defines the interface that must be implemented by symmetric block ciphers used in the Freenet cryptography architecture
org.bouncycastle.crypto.BlockCipher
Block cipher engines are expected to conform to this interface.
org.bouncycastle2.crypto.BlockCipher
Block cipher engines are expected to conform to this interface.
org.h2.security.BlockCipher
A block cipher is a data encryption algorithm that operates on blocks.
org.lealone.security.BlockCipher
A block cipher is a data encryption algorithm that operates on blocks.

Examples of freenet.crypt.BlockCipher

      // create new
      byte[] newsalt = new byte[0x10];
      random.nextBytes(newsalt);
      byte[] diskSalt = newsalt;
      if(masterKey != null) {
        BlockCipher cipher;
        try {
          cipher = new Rijndael(256, 128);
        } catch (UnsupportedCipherException e) {
          throw new Error("Impossible: no Rijndael(256,128): "+e, e);
        }
        cipher.initialize(masterKey);
        diskSalt = new byte[0x10];
        cipher.encipher(newsalt, diskSalt);
        if(logDEBUG)
          Logger.debug(this, "Encrypting with "+HexUtil.bytesToHex(newsalt)+" from "+HexUtil.bytesToHex(diskSalt));
      }
      cipherManager = new CipherManager(newsalt, diskSalt);


      writeConfigFile();
      return true;
    } else {
      try {
        // try to load
        RandomAccessFile raf = new RandomAccessFile(configFile, "r");
        try {
          byte[] salt = new byte[0x10];
          raf.readFully(salt);


          byte[] diskSalt = salt;
          if(masterKey != null) {
            BlockCipher cipher;
            try {
              cipher = new Rijndael(256, 128);
            } catch (UnsupportedCipherException e) {
              throw new Error("Impossible: no Rijndael(256,128): "+e, e);
            }
            cipher.initialize(masterKey);
            salt = new byte[0x10];
            cipher.decipher(diskSalt, salt);
            if(logDEBUG)
              Logger.debug(this, "Encrypting (new) with "+HexUtil.bytesToHex(salt)+" from "+HexUtil.bytesToHex(diskSalt));
          }


          cipherManager = new CipherManager(salt, diskSalt);

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Examples of org.bouncycastle.crypto.BlockCipher

                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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Examples of org.bouncycastle.crypto.BlockCipher

        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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Examples of org.bouncycastle.crypto.BlockCipher

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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Examples of org.bouncycastle.crypto.BlockCipher

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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Examples of org.bouncycastle.crypto.BlockCipher

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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Examples of org.bouncycastle.crypto.BlockCipher

                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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Examples of org.bouncycastle.crypto.BlockCipher

        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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Examples of org.bouncycastle.crypto.BlockCipher

                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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Examples of org.bouncycastle.crypto.BlockCipher

    }


    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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