1 files changed, 0 insertions, 188 deletions
diff --git a/core/src/main/java/org/bouncycastle/crypto/engines/XTEAEngine.java b/core/src/main/java/org/bouncycastle/crypto/engines/XTEAEngine.java
deleted file mode 100644
index fb21bbc2..00000000
--- a/core/src/main/java/org/bouncycastle/crypto/engines/XTEAEngine.java
+++ /dev/null
@@ -1,188 +0,0 @@
-package org.bouncycastle.crypto.engines;
-
-import org.bouncycastle.crypto.BlockCipher;
-import org.bouncycastle.crypto.CipherParameters;
-import org.bouncycastle.crypto.DataLengthException;
-import org.bouncycastle.crypto.OutputLengthException;
-import org.bouncycastle.crypto.params.KeyParameter;
-
-/**
- * An XTEA engine.
- */
-public class XTEAEngine
-    implements BlockCipher
-{
-    private static final int rounds     = 32,
-                             block_size = 8,
-//                             key_size   = 16,
-                             delta      = 0x9E3779B9;
-
-    /*
-     * the expanded key array of 4 subkeys
-     */
-    private int[]   _S    = new int[4],
-                    _sum0 = new int[32],
-                    _sum1 = new int[32];
-    private boolean _initialised,
-                    _forEncryption;
-
-    /**
-     * Create an instance of the TEA encryption algorithm
-     * and set some defaults
-     */
-    public XTEAEngine()
-    {
-        _initialised = false;
-    }
-
-    public String getAlgorithmName()
-    {
-        return "XTEA";
-    }
-
-    public int getBlockSize()
-    {
-        return block_size;
-    }
-
-    /**
-     * initialise
-     *
-     * @param forEncryption whether or not we are for encryption.
-     * @param params the parameters required to set up the cipher.
-     * @exception IllegalArgumentException if the params argument is
-     * inappropriate.
-     */
-    public void init(
-        boolean             forEncryption,
-        CipherParameters    params)
-    {
-        if (!(params instanceof KeyParameter))
-        {
-            throw new IllegalArgumentException("invalid parameter passed to TEA init - " + params.getClass().getName());
-        }
-
-        _forEncryption = forEncryption;
-        _initialised = true;
-
-        KeyParameter       p = (KeyParameter)params;
-
-        setKey(p.getKey());
-    }
-
-    public int processBlock(
-        byte[]  in,
-        int     inOff,
-        byte[]  out,
-        int     outOff)
-    {
-        if (!_initialised)
-        {
-            throw new IllegalStateException(getAlgorithmName()+" not initialised");
-        }
-
-        if ((inOff + block_size) > in.length)
-        {
-            throw new DataLengthException("input buffer too short");
-        }
-
-        if ((outOff + block_size) > out.length)
-        {
-            throw new OutputLengthException("output buffer too short");
-        }
-
-        return (_forEncryption) ? encryptBlock(in, inOff, out, outOff)
-                                    : decryptBlock(in, inOff, out, outOff);
-    }
-
-    public void reset()
-    {
-    }
-
-    /**
-     * Re-key the cipher.
-     * <p>
-     * @param  key  the key to be used
-     */
-    private void setKey(
-        byte[]      key)
-    {
-        if (key.length != 16) 
-        {
-            throw new IllegalArgumentException("Key size must be 128 bits.");
-        }
-
-        int i, j;
-        for (i = j = 0; i < 4; i++,j+=4)
-        {
-            _S[i] = bytesToInt(key, j);
-        }
-            
-        for (i = j = 0; i < rounds; i++)
-        {
-                _sum0[i] = (j + _S[j & 3]);
-                j += delta;
-                _sum1[i] = (j + _S[j >>> 11 & 3]);
-        }
-    }
-
-    private int encryptBlock(
-        byte[]  in,
-        int     inOff,
-        byte[]  out,
-        int     outOff)
-    {
-        // Pack bytes into integers
-        int v0 = bytesToInt(in, inOff);
-        int v1 = bytesToInt(in, inOff + 4);
-
-        for (int i = 0; i < rounds; i++)
-        {
-            v0    += ((v1 << 4 ^ v1 >>> 5) + v1) ^ _sum0[i];
-            v1    += ((v0 << 4 ^ v0 >>> 5) + v0) ^ _sum1[i];
-        }
-
-        unpackInt(v0, out, outOff);
-        unpackInt(v1, out, outOff + 4);
-
-        return block_size;
-    }
-
-    private int decryptBlock(
-        byte[]  in,
-        int     inOff,
-        byte[]  out,
-        int     outOff)
-    {
-        // Pack bytes into integers
-        int v0 = bytesToInt(in, inOff);
-        int v1 = bytesToInt(in, inOff + 4);
-
-        for (int i = rounds-1; i >= 0; i--)
-        {
-            v1  -= ((v0 << 4 ^ v0 >>> 5) + v0) ^ _sum1[i];
-            v0  -= ((v1 << 4 ^ v1 >>> 5) + v1) ^ _sum0[i];
-        }
-
-        unpackInt(v0, out, outOff);
-        unpackInt(v1, out, outOff + 4);
-
-        return block_size;
-    }
-
-    private int bytesToInt(byte[] in, int inOff)
-    {
-        return ((in[inOff++]) << 24) |
-                 ((in[inOff++] & 255) << 16) |
-                 ((in[inOff++] & 255) <<  8) |
-                 ((in[inOff] & 255));
-    }
-
-    private void unpackInt(int v, byte[] out, int outOff)
-    {
-        out[outOff++] = (byte)(v >>> 24);
-        out[outOff++] = (byte)(v >>> 16);
-        out[outOff++] = (byte)(v >>>  8);
-        out[outOff  ] = (byte)v;
-    }
-}