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Diffstat (limited to 'core/src/test/java/org/bouncycastle/crypto/test/speedy/ThreefishReferenceEngine.java')
-rw-r--r--core/src/test/java/org/bouncycastle/crypto/test/speedy/ThreefishReferenceEngine.java395
1 files changed, 0 insertions, 395 deletions
diff --git a/core/src/test/java/org/bouncycastle/crypto/test/speedy/ThreefishReferenceEngine.java b/core/src/test/java/org/bouncycastle/crypto/test/speedy/ThreefishReferenceEngine.java
deleted file mode 100644
index 7dabbde0..00000000
--- a/core/src/test/java/org/bouncycastle/crypto/test/speedy/ThreefishReferenceEngine.java
+++ /dev/null
@@ -1,395 +0,0 @@
-package org.bouncycastle.crypto.test.speedy;
-
-import org.bouncycastle.crypto.BlockCipher;
-import org.bouncycastle.crypto.CipherParameters;
-import org.bouncycastle.crypto.DataLengthException;
-import org.bouncycastle.crypto.params.KeyParameter;
-import org.bouncycastle.crypto.params.TweakableBlockCipherParameters;
-
-public class ThreefishReferenceEngine
- implements BlockCipher
-{
-
- /**
- * The tweak input is always 128 bits
- */
- private static final int TWEAK_SIZE = 16;
-
- private static long C_240 = 0x1BD11BDAA9FC1A22L;
-
- private final int blocksize = 64;
- private final int rounds = 72;
- private final int words = 8;
-
- private boolean forEncryption;
-
- private long[] block = new long[words];
-
- private int[][] rotations = R8;
-
- /**
- * Rotation constants Rd,j for Nw = 8.
- */
- private static final int[][] R8 = {
- {46, 36, 19, 37},
- {33, 27, 14, 42},
- {17, 49, 36, 39},
- {44, 9, 54, 56},
- {39, 30, 34, 24},
- {13, 50, 10, 17},
- {25, 29, 39, 43},
- {8, 35, 56, 22}};
-
- private long[] t;
-
- private long kw[];
-
- public void init(boolean forEncryption, CipherParameters params)
- throws IllegalArgumentException
- {
- if (params instanceof TweakableBlockCipherParameters)
- {
- init(forEncryption, (TweakableBlockCipherParameters)params);
- }
- else if (params instanceof KeyParameter)
- {
- init(forEncryption, new TweakableBlockCipherParameters((KeyParameter)params, new byte[TWEAK_SIZE]));
- }
- else
- {
- throw new IllegalArgumentException("Invalid parameter passed to Threefish init - "
- + params.getClass().getName());
- }
- }
-
- public void init(boolean forEncryption, TweakableBlockCipherParameters params)
- throws IllegalArgumentException
- {
- // TODO: Remove some of the NPEs that can be avoided in the Params
- // classes
- if ((params.getKey() == null) || (params.getKey().getKey() == null)
- || (params.getKey().getKey().length != blocksize))
- {
- throw new IllegalArgumentException("Threefish key must be same size as block (%d bytes)" + blocksize);
- }
-
- if ((params.getTweak() == null) || (params.getTweak().length != TWEAK_SIZE))
- {
- throw new IllegalArgumentException("Threefish tweak must be %d bytes" + TWEAK_SIZE);
- }
-
- this.forEncryption = forEncryption;
-
- generateKeySchedule(params.getKey().getKey(), params.getTweak());
- }
-
- private void generateKeySchedule(byte[] key, byte[] tweak)
- {
- // TODO: This key schedule can/should be generated incrementally/on demand during encrypt/decrypt
- // to reduce memory overhead (currently 1.2MB = (rounds/4+1)=19 * words=8 * 8 bytes/word)
-
- t = new long[3];
- t[0] = BytesToWord(tweak, 0);
- t[1] = BytesToWord(tweak, 8);
- t[2] = t[0] ^ t[1];
-
- kw = new long[words + 1];
-
- long knw = C_240;
- for (int i = 0; i < words; i++)
- {
- kw[i] = BytesToWord(key, i * 8);
- knw = knw ^ kw[i];
- }
- kw[kw.length - 1] = knw;
- }
-
- private static long BytesToWord(byte[] bytes, int off)
- {
- long word = 0;
- int index = off;
-
- word = (bytes[index++] & 0xffL);
- word |= (bytes[index++] & 0xffL) << 8;
- word |= (bytes[index++] & 0xffL) << 16;
- word |= (bytes[index++] & 0xffL) << 24;
- word |= (bytes[index++] & 0xffL) << 32;
- word |= (bytes[index++] & 0xffL) << 40;
- word |= (bytes[index++] & 0xffL) << 48;
- word |= (bytes[index++] & 0xffL) << 56;
-
- return word;
- }
-
- private static void WordToBytes(long word, byte[] bytes, int off)
- {
- int index = off;
-
- bytes[index++] = (byte)word;
- bytes[index++] = (byte)(word >> 8);
- bytes[index++] = (byte)(word >> 16);
- bytes[index++] = (byte)(word >> 24);
- bytes[index++] = (byte)(word >> 32);
- bytes[index++] = (byte)(word >> 40);
- bytes[index++] = (byte)(word >> 48);
- bytes[index++] = (byte)(word >> 56);
- }
-
- public String getAlgorithmName()
- {
- return "Threefish";
- }
-
- public int getBlockSize()
- {
- return blocksize;
- }
-
- public int processBlock(byte[] in, int inOff, byte[] out, int outOff)
- throws DataLengthException,
- IllegalStateException
- {
- // TODO: Check init state
- if (kw == null)
- {
- throw new IllegalStateException("Threefish engine not initialised");
- }
-
- if ((inOff + blocksize) > in.length)
- {
- throw new DataLengthException("Input buffer too short");
- }
-
- if ((outOff + blocksize) > out.length)
- {
- throw new DataLengthException("Output buffer too short");
- }
-
- if (forEncryption)
- {
- unpackBlock(in, inOff);
- encryptBlock();
- packBlock(out, outOff);
- }
- else
- {
- unpackBlock(in, inOff);
- decryptBlock();
- packBlock(out, outOff);
- }
-
- return blocksize;
- }
-
- private void decryptBlock()
- {
- for (int d = rounds; d > 0; d--)
- {
- // Add subkey every 4 rounds
- if ((d % 4) == 0)
- {
- uninjectSubkey(d / 4);
- }
-
- // Permute
- unpermute();
-
- // Mix
- for (int j = 0; j < words / 2; j++)
- {
- unmix(j, d - 1);
- }
- }
-
- // Remove first subkey
- uninjectSubkey(0);
- }
-
- private void injectSubkey(int s)
- {
- for (int i = 0; i < (words - 3); i++)
- {
- block[i] += kw[(s + i) % (words + 1)];
- }
- block[words - 3] += kw[(s + words - 3) % (words + 1)] + t[s % 3];
- block[words - 2] += kw[(s + words - 2) % (words + 1)] + t[(s + 1) % 3];
- block[words - 1] += kw[(s + words - 1) % (words + 1)] + s;
- }
-
- private void uninjectSubkey(int s)
- {
- for (int i = 0; i < (words - 3); i++)
- {
- block[i] -= kw[(s + i) % (words + 1)];
- }
- block[words - 3] -= kw[(s + words - 3) % (words + 1)] + t[s % 3];
- block[words - 2] -= kw[(s + words - 2) % (words + 1)] + t[(s + 1) % 3];
- block[words - 1] -= kw[(s + words - 1) % (words + 1)] + s;
- }
-
- private void encryptBlock()
- {
- for (int d = 0; d < rounds; d++)
- {
- // Add subkey every 4 rounds
- if ((d % 4) == 0)
- {
- injectSubkey(d / 4);
- }
-
- // Mix
- for (int j = 0; j < words / 2; j++)
- {
- mix(j, d);
- }
-
- // Permute
- permute();
- }
-
- // Final key addition
- injectSubkey(rounds / 4);
- }
-
- private void permute()
- {
- // Permute in place for Nw = 8
- long f0 = block[0];
- long f3 = block[3];
-
- block[0] = block[2];
- block[1] = block[1];
- block[2] = block[4];
- block[3] = block[7];
- block[4] = block[6];
- block[5] = block[5];
- block[6] = f0;
- block[7] = f3;
- }
-
- private void unpermute()
- {
- // TODO: Change these to tables
- // Permute in place for Nw = 8
- long f6 = block[6];
- long f7 = block[7];
-
- block[7] = block[3];
- block[6] = block[4];
- block[5] = block[5];
- block[4] = block[2];
- block[3] = f7;
- block[2] = block[0];
- block[1] = block[1];
- block[0] = f6;
- }
-
- private void mix(int j, int d)
- {
- // ed,2j and ed,2j+1
- int b0 = 2 * j;
- int b1 = b0 + 1;
-
- // y0 = x0 + x1
- block[b0] = block[b0] + block[b1];
-
- // y1 = (x1 <<< R(d mod 8,j)) xor y0
- block[b1] = Long.rotateLeft(block[b1], rotations[d % 8][j]) ^ block[b0];
- }
-
- private void unmix(int j, int d)
- {
- // ed,2j and ed,2j+1
- int b0 = 2 * j;
- int b1 = b0 + 1;
-
- // x1 = (y1 ^ y0) >>> R(d mod 8, j))
- block[b1] = Long.rotateRight(block[b1] ^ block[b0], rotations[d % 8][j]);
-
- // x0 = y0 - x1
- block[b0] = block[b0] - block[b1];
-
- }
-
- public static void main(String[] args)
- {
- ThreefishReferenceEngine engine = new ThreefishReferenceEngine();
- engine.fu();
- }
-
- private void fu()
- {
- block[0] = 0x12;
- block[1] = 0x34;
- block[2] = 0x56;
- block[3] = 0x78;
- block[4] = 0x90;
- block[5] = 0xAB;
- block[6] = 0xCD;
- block[7] = 0xEF;
-
- for (int i = 0; i < block.length; i++)
- {
- System.err.println(i + " : " + Long.toHexString(block[i]));
- }
- mix(0, 4);
- System.err.println("=========");
- for (int i = 0; i < block.length; i++)
- {
- System.err.println(i + " : " + Long.toHexString(block[i]));
- }
- unmix(0, 4);
- System.err.println("=========");
- for (int i = 0; i < block.length; i++)
- {
- System.err.println(i + " : " + Long.toHexString(block[i]));
- }
- permute();
- System.err.println("=========");
- for (int i = 0; i < block.length; i++)
- {
- System.err.println(i + " : " + Long.toHexString(block[i]));
- }
- unpermute();
- System.err.println("=========");
- for (int i = 0; i < block.length; i++)
- {
- System.err.println(i + " : " + Long.toHexString(block[i]));
- }
- generateKeySchedule(new byte[blocksize], new byte[TWEAK_SIZE]);
- injectSubkey(5);
- System.err.println("=========");
- for (int i = 0; i < block.length; i++)
- {
- System.err.println(i + " : " + Long.toHexString(block[i]));
- }
- uninjectSubkey(5);
- System.err.println("=========");
- for (int i = 0; i < block.length; i++)
- {
- System.err.println(i + " : " + Long.toHexString(block[i]));
- }
- }
-
- private void packBlock(byte[] out, int outOff)
- {
- for (int i = 0; i < block.length; i++)
- {
- WordToBytes(block[i], out, outOff + (i * 8));
- }
- }
-
- private long[] unpackBlock(byte[] bytes, int index)
- {
- for (int i = 0; i < block.length; i++)
- {
- block[i] = BytesToWord(bytes, index + (i * 8));
- }
- return block;
- }
-
- public void reset()
- {
- }
-
-}
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