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Brooklyn/crypto/SPH-java/Fugue2Core.java

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// $Id: Fugue2Core.java 159 2010-05-01 15:41:17Z tp $
package fr.cryptohash;
/**
* This class is the base class for Fugue-224 and Fugue-256.
*
* <pre>
* ==========================(LICENSE BEGIN)============================
*
* Copyright (c) 2007-2010 Projet RNRT SAPHIR
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* ===========================(LICENSE END)=============================
* </pre>
*
* @version $Revision: 159 $
* @author Thomas Pornin &lt;[email protected]&gt;
*/
abstract class Fugue2Core extends FugueCore {
/** @see FugueCore */
void process(int w, byte[] buf, int off, int num)
{
int[] S = this.S;
switch (rshift) {
case 1:
S[ 4] ^= S[24];
S[24] = w;
S[ 2] ^= S[24];
S[25] ^= S[18];
S[21] ^= S[25];
S[22] ^= S[26];
S[23] ^= S[27];
S[ 6] ^= S[25];
S[ 7] ^= S[26];
S[ 8] ^= S[27];
smix(21, 22, 23, 24);
S[18] ^= S[22];
S[19] ^= S[23];
S[20] ^= S[24];
S[ 3] ^= S[22];
S[ 4] ^= S[23];
S[ 5] ^= S[24];
smix(18, 19, 20, 21);
if (num -- <= 0) {
rshift = 2;
return;
}
w = (buf[off] << 24)
| ((buf[off + 1] & 0xFF) << 16)
| ((buf[off + 2] & 0xFF) << 8)
| (buf[off + 3] & 0xFF);
off += 4;
/* fall through */
case 2:
S[28] ^= S[18];
S[18] = w;
S[26] ^= S[18];
S[19] ^= S[12];
S[15] ^= S[19];
S[16] ^= S[20];
S[17] ^= S[21];
S[ 0] ^= S[19];
S[ 1] ^= S[20];
S[ 2] ^= S[21];
smix(15, 16, 17, 18);
S[12] ^= S[16];
S[13] ^= S[17];
S[14] ^= S[18];
S[27] ^= S[16];
S[28] ^= S[17];
S[29] ^= S[18];
smix(12, 13, 14, 15);
if (num -- <= 0) {
rshift = 3;
return;
}
w = (buf[off] << 24)
| ((buf[off + 1] & 0xFF) << 16)
| ((buf[off + 2] & 0xFF) << 8)
| (buf[off + 3] & 0xFF);
off += 4;
/* fall through */
case 3:
S[22] ^= S[12];
S[12] = w;
S[20] ^= S[12];
S[13] ^= S[ 6];
S[ 9] ^= S[13];
S[10] ^= S[14];
S[11] ^= S[15];
S[24] ^= S[13];
S[25] ^= S[14];
S[26] ^= S[15];
smix( 9, 10, 11, 12);
S[ 6] ^= S[10];
S[ 7] ^= S[11];
S[ 8] ^= S[12];
S[21] ^= S[10];
S[22] ^= S[11];
S[23] ^= S[12];
smix( 6, 7, 8, 9);
if (num -- <= 0) {
rshift = 4;
return;
}
w = (buf[off] << 24)
| ((buf[off + 1] & 0xFF) << 16)
| ((buf[off + 2] & 0xFF) << 8)
| (buf[off + 3] & 0xFF);
off += 4;
/* fall through */
case 4:
S[16] ^= S[ 6];
S[ 6] = w;
S[14] ^= S[ 6];
S[ 7] ^= S[ 0];
S[ 3] ^= S[ 7];
S[ 4] ^= S[ 8];
S[ 5] ^= S[ 9];
S[18] ^= S[ 7];
S[19] ^= S[ 8];
S[20] ^= S[ 9];
smix( 3, 4, 5, 6);
S[ 0] ^= S[ 4];
S[ 1] ^= S[ 5];
S[ 2] ^= S[ 6];
S[15] ^= S[ 4];
S[16] ^= S[ 5];
S[17] ^= S[ 6];
smix( 0, 1, 2, 3);
if (num -- <= 0) {
rshift = 0;
return;
}
w = (buf[off] << 24)
| ((buf[off + 1] & 0xFF) << 16)
| ((buf[off + 2] & 0xFF) << 8)
| (buf[off + 3] & 0xFF);
off += 4;
}
for (;;) {
/* ================ */
S[10] ^= S[ 0];
S[ 0] = w;
S[ 8] ^= S[ 0];
S[ 1] ^= S[24];
S[27] ^= S[ 1];
S[28] ^= S[ 2];
S[29] ^= S[ 3];
S[12] ^= S[ 1];
S[13] ^= S[ 2];
S[14] ^= S[ 3];
smix(27, 28, 29, 0);
S[24] ^= S[28];
S[25] ^= S[29];
S[26] ^= S[ 0];
S[ 9] ^= S[28];
S[10] ^= S[29];
S[11] ^= S[ 0];
smix(24, 25, 26, 27);
if (num -- <= 0) {
rshift = 1;
return;
}
w = (buf[off] << 24)
| ((buf[off + 1] & 0xFF) << 16)
| ((buf[off + 2] & 0xFF) << 8)
| (buf[off + 3] & 0xFF);
off += 4;
/* ================ */
S[ 4] ^= S[24];
S[24] = w;
S[ 2] ^= S[24];
S[25] ^= S[18];
S[21] ^= S[25];
S[22] ^= S[26];
S[23] ^= S[27];
S[ 6] ^= S[25];
S[ 7] ^= S[26];
S[ 8] ^= S[27];
smix(21, 22, 23, 24);
S[18] ^= S[22];
S[19] ^= S[23];
S[20] ^= S[24];
S[ 3] ^= S[22];
S[ 4] ^= S[23];
S[ 5] ^= S[24];
smix(18, 19, 20, 21);
if (num -- <= 0) {
rshift = 2;
return;
}
w = (buf[off] << 24)
| ((buf[off + 1] & 0xFF) << 16)
| ((buf[off + 2] & 0xFF) << 8)
| (buf[off + 3] & 0xFF);
off += 4;
/* ================ */
S[28] ^= S[18];
S[18] = w;
S[26] ^= S[18];
S[19] ^= S[12];
S[15] ^= S[19];
S[16] ^= S[20];
S[17] ^= S[21];
S[ 0] ^= S[19];
S[ 1] ^= S[20];
S[ 2] ^= S[21];
smix(15, 16, 17, 18);
S[12] ^= S[16];
S[13] ^= S[17];
S[14] ^= S[18];
S[27] ^= S[16];
S[28] ^= S[17];
S[29] ^= S[18];
smix(12, 13, 14, 15);
if (num -- <= 0) {
rshift = 3;
return;
}
w = (buf[off] << 24)
| ((buf[off + 1] & 0xFF) << 16)
| ((buf[off + 2] & 0xFF) << 8)
| (buf[off + 3] & 0xFF);
off += 4;
/* ================ */
S[22] ^= S[12];
S[12] = w;
S[20] ^= S[12];
S[13] ^= S[ 6];
S[ 9] ^= S[13];
S[10] ^= S[14];
S[11] ^= S[15];
S[24] ^= S[13];
S[25] ^= S[14];
S[26] ^= S[15];
smix( 9, 10, 11, 12);
S[ 6] ^= S[10];
S[ 7] ^= S[11];
S[ 8] ^= S[12];
S[21] ^= S[10];
S[22] ^= S[11];
S[23] ^= S[12];
smix( 6, 7, 8, 9);
if (num -- <= 0) {
rshift = 4;
return;
}
w = (buf[off] << 24)
| ((buf[off + 1] & 0xFF) << 16)
| ((buf[off + 2] & 0xFF) << 8)
| (buf[off + 3] & 0xFF);
off += 4;
/* ================ */
S[16] ^= S[ 6];
S[ 6] = w;
S[14] ^= S[ 6];
S[ 7] ^= S[ 0];
S[ 3] ^= S[ 7];
S[ 4] ^= S[ 8];
S[ 5] ^= S[ 9];
S[18] ^= S[ 7];
S[19] ^= S[ 8];
S[20] ^= S[ 9];
smix( 3, 4, 5, 6);
S[ 0] ^= S[ 4];
S[ 1] ^= S[ 5];
S[ 2] ^= S[ 6];
S[15] ^= S[ 4];
S[16] ^= S[ 5];
S[17] ^= S[ 6];
smix( 0, 1, 2, 3);
if (num -- <= 0) {
rshift = 0;
return;
}
w = (buf[off] << 24)
| ((buf[off + 1] & 0xFF) << 16)
| ((buf[off + 2] & 0xFF) << 8)
| (buf[off + 3] & 0xFF);
off += 4;
}
}
/** @see FugueCore */
void processFinal(byte[] out)
{
int[] S = this.S;
ror(6 * rshift, 30);
for (int i = 0; i < 10; i ++) {
ror(3, 30);
cmix30();
smix(0, 1, 2, 3);
}
for (int i = 0; i < 13; i ++) {
S[ 4] ^= S[ 0];
S[15] ^= S[ 0];
ror(15, 30);
smix(0, 1, 2, 3);
S[ 4] ^= S[ 0];
S[16] ^= S[ 0];
ror(14, 30);
smix(0, 1, 2, 3);
}
S[ 4] ^= S[ 0];
S[15] ^= S[ 0];
encodeBEInt(S[ 1], out, 0);
encodeBEInt(S[ 2], out, 4);
encodeBEInt(S[ 3], out, 8);
encodeBEInt(S[ 4], out, 12);
encodeBEInt(S[15], out, 16);
encodeBEInt(S[16], out, 20);
encodeBEInt(S[17], out, 24);
if (out.length >= 32)
encodeBEInt(S[18], out, 28);
}
}