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589 lines
21 KiB
589 lines
21 KiB
// $Id: BMWSmallCore.java 214 2010-06-03 17:25:08Z tp $ |
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package fr.cryptohash; |
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/** |
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* This class implements BMW-224 and BMW-256. |
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* |
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* <pre> |
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* ==========================(LICENSE BEGIN)============================ |
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* |
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* Copyright (c) 2007-2010 Projet RNRT SAPHIR |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining |
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* a copy of this software and associated documentation files (the |
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* "Software"), to deal in the Software without restriction, including |
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* without limitation the rights to use, copy, modify, merge, publish, |
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* distribute, sublicense, and/or sell copies of the Software, and to |
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* permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be |
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* included in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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* |
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* ===========================(LICENSE END)============================= |
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* </pre> |
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* |
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* @version $Revision: 214 $ |
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* @author Thomas Pornin <[email protected]> |
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*/ |
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abstract class BMWSmallCore extends DigestEngine { |
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private int[] M, H, H2, Q; |
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/** |
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* Create the object. |
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*/ |
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BMWSmallCore() |
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{ |
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} |
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/** @see Digest */ |
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public int getBlockLength() |
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{ |
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return 64; |
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} |
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/** @see DigestEngine */ |
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protected Digest copyState(BMWSmallCore dst) |
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{ |
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System.arraycopy(H, 0, dst.H, 0, H.length); |
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return super.copyState(dst); |
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} |
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/** @see DigestEngine */ |
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protected void engineReset() |
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{ |
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int[] iv = getInitVal(); |
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System.arraycopy(iv, 0, H, 0, iv.length); |
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} |
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abstract int[] getInitVal(); |
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private static final int[] FINAL = { |
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0xaaaaaaa0, 0xaaaaaaa1, 0xaaaaaaa2, 0xaaaaaaa3, |
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0xaaaaaaa4, 0xaaaaaaa5, 0xaaaaaaa6, 0xaaaaaaa7, |
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0xaaaaaaa8, 0xaaaaaaa9, 0xaaaaaaaa, 0xaaaaaaab, |
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0xaaaaaaac, 0xaaaaaaad, 0xaaaaaaae, 0xaaaaaaaf |
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}; |
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private void compress(int[] m) |
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{ |
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int[] h = H; |
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int[] q = Q; |
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q[0] = ((((m[5] ^ h[5]) - (m[7] ^ h[7]) + (m[10] ^ h[10]) |
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+ (m[13] ^ h[13]) + (m[14] ^ h[14])) >>> 1) |
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^ (((m[5] ^ h[5]) - (m[7] ^ h[7]) + (m[10] ^ h[10]) |
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+ (m[13] ^ h[13]) + (m[14] ^ h[14])) << 3) |
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^ circularLeft(((m[5] ^ h[5]) - (m[7] ^ h[7]) |
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+ (m[10] ^ h[10]) + (m[13] ^ h[13]) |
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+ (m[14] ^ h[14])), 4) |
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^ circularLeft(((m[5] ^ h[5]) - (m[7] ^ h[7]) |
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+ (m[10] ^ h[10]) + (m[13] ^ h[13]) |
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+ (m[14] ^ h[14])), 19)) |
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+ h[1]; |
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q[1] = ((((m[6] ^ h[6]) - (m[8] ^ h[8]) + (m[11] ^ h[11]) |
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+ (m[14] ^ h[14]) - (m[15] ^ h[15])) >>> 1) |
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^ (((m[6] ^ h[6]) - (m[8] ^ h[8]) + (m[11] ^ h[11]) |
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+ (m[14] ^ h[14]) - (m[15] ^ h[15])) << 2) |
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^ circularLeft(((m[6] ^ h[6]) - (m[8] ^ h[8]) |
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+ (m[11] ^ h[11]) + (m[14] ^ h[14]) |
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- (m[15] ^ h[15])), 8) |
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^ circularLeft(((m[6] ^ h[6]) - (m[8] ^ h[8]) |
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+ (m[11] ^ h[11]) + (m[14] ^ h[14]) |
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- (m[15] ^ h[15])), 23)) |
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+ h[2]; |
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q[2] = ((((m[0] ^ h[0]) + (m[7] ^ h[7]) + (m[9] ^ h[9]) |
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- (m[12] ^ h[12]) + (m[15] ^ h[15])) >>> 2) |
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^ (((m[0] ^ h[0]) + (m[7] ^ h[7]) + (m[9] ^ h[9]) |
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- (m[12] ^ h[12]) + (m[15] ^ h[15])) << 1) |
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^ circularLeft(((m[0] ^ h[0]) + (m[7] ^ h[7]) |
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+ (m[9] ^ h[9]) - (m[12] ^ h[12]) |
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+ (m[15] ^ h[15])), 12) |
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^ circularLeft(((m[0] ^ h[0]) + (m[7] ^ h[7]) |
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+ (m[9] ^ h[9]) - (m[12] ^ h[12]) |
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+ (m[15] ^ h[15])), 25)) |
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+ h[3]; |
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q[3] = ((((m[0] ^ h[0]) - (m[1] ^ h[1]) + (m[8] ^ h[8]) |
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- (m[10] ^ h[10]) + (m[13] ^ h[13])) >>> 2) |
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^ (((m[0] ^ h[0]) - (m[1] ^ h[1]) + (m[8] ^ h[8]) |
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- (m[10] ^ h[10]) + (m[13] ^ h[13])) << 2) |
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^ circularLeft(((m[0] ^ h[0]) - (m[1] ^ h[1]) |
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+ (m[8] ^ h[8]) - (m[10] ^ h[10]) |
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+ (m[13] ^ h[13])), 15) |
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^ circularLeft(((m[0] ^ h[0]) - (m[1] ^ h[1]) |
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+ (m[8] ^ h[8]) - (m[10] ^ h[10]) |
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+ (m[13] ^ h[13])), 29)) |
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+ h[4]; |
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q[4] = ((((m[1] ^ h[1]) + (m[2] ^ h[2]) + (m[9] ^ h[9]) |
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- (m[11] ^ h[11]) - (m[14] ^ h[14])) >>> 1) |
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^ ((m[1] ^ h[1]) + (m[2] ^ h[2]) + (m[9] ^ h[9]) |
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- (m[11] ^ h[11]) - (m[14] ^ h[14]))) + h[5]; |
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q[5] = ((((m[3] ^ h[3]) - (m[2] ^ h[2]) + (m[10] ^ h[10]) |
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- (m[12] ^ h[12]) + (m[15] ^ h[15])) >>> 1) |
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^ (((m[3] ^ h[3]) - (m[2] ^ h[2]) + (m[10] ^ h[10]) |
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- (m[12] ^ h[12]) + (m[15] ^ h[15])) << 3) |
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^ circularLeft(((m[3] ^ h[3]) - (m[2] ^ h[2]) |
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+ (m[10] ^ h[10]) - (m[12] ^ h[12]) |
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+ (m[15] ^ h[15])), 4) |
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^ circularLeft(((m[3] ^ h[3]) - (m[2] ^ h[2]) |
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+ (m[10] ^ h[10]) - (m[12] ^ h[12]) |
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+ (m[15] ^ h[15])), 19)) |
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+ h[6]; |
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q[6] = ((((m[4] ^ h[4]) - (m[0] ^ h[0]) - (m[3] ^ h[3]) |
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- (m[11] ^ h[11]) + (m[13] ^ h[13])) >>> 1) |
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^ (((m[4] ^ h[4]) - (m[0] ^ h[0]) - (m[3] ^ h[3]) |
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- (m[11] ^ h[11]) + (m[13] ^ h[13])) << 2) |
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^ circularLeft(((m[4] ^ h[4]) - (m[0] ^ h[0]) |
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- (m[3] ^ h[3]) - (m[11] ^ h[11]) |
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+ (m[13] ^ h[13])), 8) |
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^ circularLeft(((m[4] ^ h[4]) - (m[0] ^ h[0]) |
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- (m[3] ^ h[3]) - (m[11] ^ h[11]) |
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+ (m[13] ^ h[13])), 23)) |
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+ h[7]; |
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q[7] = ((((m[1] ^ h[1]) - (m[4] ^ h[4]) - (m[5] ^ h[5]) |
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- (m[12] ^ h[12]) - (m[14] ^ h[14])) >>> 2) |
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^ (((m[1] ^ h[1]) - (m[4] ^ h[4]) - (m[5] ^ h[5]) |
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- (m[12] ^ h[12]) - (m[14] ^ h[14])) << 1) |
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^ circularLeft(((m[1] ^ h[1]) - (m[4] ^ h[4]) |
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- (m[5] ^ h[5]) - (m[12] ^ h[12]) |
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- (m[14] ^ h[14])), 12) |
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^ circularLeft(((m[1] ^ h[1]) - (m[4] ^ h[4]) |
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- (m[5] ^ h[5]) - (m[12] ^ h[12]) |
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- (m[14] ^ h[14])), 25)) |
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+ h[8]; |
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q[8] = ((((m[2] ^ h[2]) - (m[5] ^ h[5]) - (m[6] ^ h[6]) |
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+ (m[13] ^ h[13]) - (m[15] ^ h[15])) >>> 2) |
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^ (((m[2] ^ h[2]) - (m[5] ^ h[5]) - (m[6] ^ h[6]) |
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+ (m[13] ^ h[13]) - (m[15] ^ h[15])) << 2) |
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^ circularLeft(((m[2] ^ h[2]) - (m[5] ^ h[5]) |
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- (m[6] ^ h[6]) + (m[13] ^ h[13]) |
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- (m[15] ^ h[15])), 15) |
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^ circularLeft(((m[2] ^ h[2]) - (m[5] ^ h[5]) |
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- (m[6] ^ h[6]) + (m[13] ^ h[13]) |
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- (m[15] ^ h[15])), 29)) |
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+ h[9]; |
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q[9] = ((((m[0] ^ h[0]) - (m[3] ^ h[3]) + (m[6] ^ h[6]) |
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- (m[7] ^ h[7]) + (m[14] ^ h[14])) >>> 1) |
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^ ((m[0] ^ h[0]) - (m[3] ^ h[3]) + (m[6] ^ h[6]) |
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- (m[7] ^ h[7]) + (m[14] ^ h[14]))) + h[10]; |
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q[10] = ((((m[8] ^ h[8]) - (m[1] ^ h[1]) - (m[4] ^ h[4]) |
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- (m[7] ^ h[7]) + (m[15] ^ h[15])) >>> 1) |
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^ (((m[8] ^ h[8]) - (m[1] ^ h[1]) - (m[4] ^ h[4]) |
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- (m[7] ^ h[7]) + (m[15] ^ h[15])) << 3) |
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^ circularLeft(((m[8] ^ h[8]) - (m[1] ^ h[1]) |
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- (m[4] ^ h[4]) - (m[7] ^ h[7]) |
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+ (m[15] ^ h[15])), 4) |
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^ circularLeft(((m[8] ^ h[8]) - (m[1] ^ h[1]) |
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- (m[4] ^ h[4]) - (m[7] ^ h[7]) |
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+ (m[15] ^ h[15])), 19)) |
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+ h[11]; |
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q[11] = ((((m[8] ^ h[8]) - (m[0] ^ h[0]) - (m[2] ^ h[2]) |
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- (m[5] ^ h[5]) + (m[9] ^ h[9])) >>> 1) |
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^ (((m[8] ^ h[8]) - (m[0] ^ h[0]) - (m[2] ^ h[2]) |
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- (m[5] ^ h[5]) + (m[9] ^ h[9])) << 2) |
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^ circularLeft(((m[8] ^ h[8]) - (m[0] ^ h[0]) |
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- (m[2] ^ h[2]) - (m[5] ^ h[5]) |
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+ (m[9] ^ h[9])), 8) |
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^ circularLeft(((m[8] ^ h[8]) - (m[0] ^ h[0]) |
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- (m[2] ^ h[2]) - (m[5] ^ h[5]) |
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+ (m[9] ^ h[9])), 23)) |
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+ h[12]; |
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q[12] = ((((m[1] ^ h[1]) + (m[3] ^ h[3]) - (m[6] ^ h[6]) |
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- (m[9] ^ h[9]) + (m[10] ^ h[10])) >>> 2) |
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^ (((m[1] ^ h[1]) + (m[3] ^ h[3]) - (m[6] ^ h[6]) |
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- (m[9] ^ h[9]) + (m[10] ^ h[10])) << 1) |
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^ circularLeft(((m[1] ^ h[1]) + (m[3] ^ h[3]) |
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- (m[6] ^ h[6]) - (m[9] ^ h[9]) |
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+ (m[10] ^ h[10])), 12) |
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^ circularLeft(((m[1] ^ h[1]) + (m[3] ^ h[3]) |
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- (m[6] ^ h[6]) - (m[9] ^ h[9]) |
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+ (m[10] ^ h[10])), 25)) |
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+ h[13]; |
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q[13] = ((((m[2] ^ h[2]) + (m[4] ^ h[4]) + (m[7] ^ h[7]) |
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+ (m[10] ^ h[10]) + (m[11] ^ h[11])) >>> 2) |
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^ (((m[2] ^ h[2]) + (m[4] ^ h[4]) + (m[7] ^ h[7]) |
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+ (m[10] ^ h[10]) + (m[11] ^ h[11])) << 2) |
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^ circularLeft(((m[2] ^ h[2]) + (m[4] ^ h[4]) |
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+ (m[7] ^ h[7]) + (m[10] ^ h[10]) |
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+ (m[11] ^ h[11])), 15) |
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^ circularLeft(((m[2] ^ h[2]) + (m[4] ^ h[4]) |
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+ (m[7] ^ h[7]) + (m[10] ^ h[10]) |
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+ (m[11] ^ h[11])), 29)) |
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+ h[14]; |
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q[14] = ((((m[3] ^ h[3]) - (m[5] ^ h[5]) + (m[8] ^ h[8]) |
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- (m[11] ^ h[11]) - (m[12] ^ h[12])) >>> 1) |
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^ ((m[3] ^ h[3]) - (m[5] ^ h[5]) + (m[8] ^ h[8]) |
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- (m[11] ^ h[11]) - (m[12] ^ h[12]))) + h[15]; |
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q[15] = ((((m[12] ^ h[12]) - (m[4] ^ h[4]) - (m[6] ^ h[6]) |
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- (m[9] ^ h[9]) + (m[13] ^ h[13])) >>> 1) |
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^ (((m[12] ^ h[12]) - (m[4] ^ h[4]) - (m[6] ^ h[6]) |
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- (m[9] ^ h[9]) + (m[13] ^ h[13])) << 3) |
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^ circularLeft(((m[12] ^ h[12]) - (m[4] ^ h[4]) |
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- (m[6] ^ h[6]) - (m[9] ^ h[9]) |
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+ (m[13] ^ h[13])), 4) |
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^ circularLeft(((m[12] ^ h[12]) - (m[4] ^ h[4]) |
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- (m[6] ^ h[6]) - (m[9] ^ h[9]) |
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+ (m[13] ^ h[13])), 19)) |
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+ h[0]; |
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q[16] = (((q[0] >>> 1) ^ (q[0] << 2) |
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^ circularLeft(q[0], 8) ^ circularLeft(q[0], 23)) |
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+ ((q[1] >>> 2) ^ (q[1] << 1) |
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^ circularLeft(q[1], 12) ^ circularLeft(q[1], 25)) |
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+ ((q[2] >>> 2) ^ (q[2] << 2) |
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^ circularLeft(q[2], 15) ^ circularLeft(q[2], 29)) |
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+ ((q[3] >>> 1) ^ (q[3] << 3) |
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^ circularLeft(q[3], 4) ^ circularLeft(q[3], 19)) |
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+ ((q[4] >>> 1) ^ (q[4] << 2) |
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^ circularLeft(q[4], 8) ^ circularLeft(q[4], 23)) |
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+ ((q[5] >>> 2) ^ (q[5] << 1) |
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^ circularLeft(q[5], 12) ^ circularLeft(q[5], 25)) |
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+ ((q[6] >>> 2) ^ (q[6] << 2) |
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^ circularLeft(q[6], 15) ^ circularLeft(q[6], 29)) |
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+ ((q[7] >>> 1) ^ (q[7] << 3) |
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^ circularLeft(q[7], 4) ^ circularLeft(q[7], 19)) |
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+ ((q[8] >>> 1) ^ (q[8] << 2) |
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^ circularLeft(q[8], 8) ^ circularLeft(q[8], 23)) |
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+ ((q[9] >>> 2) ^ (q[9] << 1) |
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^ circularLeft(q[9], 12) ^ circularLeft(q[9], 25)) |
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+ ((q[10] >>> 2) ^ (q[10] << 2) |
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^ circularLeft(q[10], 15) ^ circularLeft(q[10], 29)) |
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+ ((q[11] >>> 1) ^ (q[11] << 3) |
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^ circularLeft(q[11], 4) ^ circularLeft(q[11], 19)) |
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+ ((q[12] >>> 1) ^ (q[12] << 2) |
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^ circularLeft(q[12], 8) ^ circularLeft(q[12], 23)) |
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+ ((q[13] >>> 2) ^ (q[13] << 1) |
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^ circularLeft(q[13], 12) ^ circularLeft(q[13], 25)) |
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+ ((q[14] >>> 2) ^ (q[14] << 2) |
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^ circularLeft(q[14], 15) ^ circularLeft(q[14], 29)) |
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+ ((q[15] >>> 1) ^ (q[15] << 3) |
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^ circularLeft(q[15], 4) ^ circularLeft(q[15], 19)) |
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+ ((circularLeft(m[0], 1) + circularLeft(m[3], 4) |
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- circularLeft(m[10], 11) + (16 * 0x05555555)) ^ h[7])); |
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q[17] = (((q[1] >>> 1) ^ (q[1] << 2) |
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^ circularLeft(q[1], 8) ^ circularLeft(q[1], 23)) |
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+ ((q[2] >>> 2) ^ (q[2] << 1) |
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^ circularLeft(q[2], 12) ^ circularLeft(q[2], 25)) |
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+ ((q[3] >>> 2) ^ (q[3] << 2) |
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^ circularLeft(q[3], 15) ^ circularLeft(q[3], 29)) |
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+ ((q[4] >>> 1) ^ (q[4] << 3) |
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^ circularLeft(q[4], 4) ^ circularLeft(q[4], 19)) |
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+ ((q[5] >>> 1) ^ (q[5] << 2) |
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^ circularLeft(q[5], 8) ^ circularLeft(q[5], 23)) |
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+ ((q[6] >>> 2) ^ (q[6] << 1) |
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^ circularLeft(q[6], 12) ^ circularLeft(q[6], 25)) |
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+ ((q[7] >>> 2) ^ (q[7] << 2) |
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^ circularLeft(q[7], 15) ^ circularLeft(q[7], 29)) |
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+ ((q[8] >>> 1) ^ (q[8] << 3) |
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^ circularLeft(q[8], 4) ^ circularLeft(q[8], 19)) |
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+ ((q[9] >>> 1) ^ (q[9] << 2) |
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^ circularLeft(q[9], 8) ^ circularLeft(q[9], 23)) |
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+ ((q[10] >>> 2) ^ (q[10] << 1) |
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^ circularLeft(q[10], 12) ^ circularLeft(q[10], 25)) |
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+ ((q[11] >>> 2) ^ (q[11] << 2) |
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^ circularLeft(q[11], 15) ^ circularLeft(q[11], 29)) |
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+ ((q[12] >>> 1) ^ (q[12] << 3) |
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^ circularLeft(q[12], 4) ^ circularLeft(q[12], 19)) |
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+ ((q[13] >>> 1) ^ (q[13] << 2) |
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^ circularLeft(q[13], 8) ^ circularLeft(q[13], 23)) |
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+ ((q[14] >>> 2) ^ (q[14] << 1) |
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^ circularLeft(q[14], 12) ^ circularLeft(q[14], 25)) |
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+ ((q[15] >>> 2) ^ (q[15] << 2) |
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^ circularLeft(q[15], 15) ^ circularLeft(q[15], 29)) |
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+ ((q[16] >>> 1) ^ (q[16] << 3) |
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^ circularLeft(q[16], 4) ^ circularLeft(q[16], 19)) |
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+ ((circularLeft(m[1], 2) + circularLeft(m[4], 5) |
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- circularLeft(m[11], 12) + (17 * 0x05555555)) ^ h[8])); |
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q[18] = (q[2] + circularLeft(q[3], 3) |
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+ q[4] + circularLeft(q[5], 7) |
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+ q[6] + circularLeft(q[7], 13) |
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+ q[8] + circularLeft(q[9], 16) |
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+ q[10] + circularLeft(q[11], 19) |
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+ q[12] + circularLeft(q[13], 23) |
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+ q[14] + circularLeft(q[15], 27) |
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+ ((q[16] >>> 1) ^ q[16]) + ((q[17] >>> 2) ^ q[17]) |
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+ ((circularLeft(m[2], 3) + circularLeft(m[5], 6) |
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- circularLeft(m[12], 13) |
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+ (18 * 0x05555555)) ^ h[9])); |
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q[19] = (q[3] + circularLeft(q[4], 3) |
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+ q[5] + circularLeft(q[6], 7) |
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+ q[7] + circularLeft(q[8], 13) |
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+ q[9] + circularLeft(q[10], 16) |
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+ q[11] + circularLeft(q[12], 19) |
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+ q[13] + circularLeft(q[14], 23) |
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+ q[15] + circularLeft(q[16], 27) |
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+ ((q[17] >>> 1) ^ q[17]) + ((q[18] >>> 2) ^ q[18]) |
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+ ((circularLeft(m[3], 4) + circularLeft(m[6], 7) |
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- circularLeft(m[13], 14) |
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+ (19 * 0x05555555)) ^ h[10])); |
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q[20] = (q[4] + circularLeft(q[5], 3) |
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+ q[6] + circularLeft(q[7], 7) |
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+ q[8] + circularLeft(q[9], 13) |
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+ q[10] + circularLeft(q[11], 16) |
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+ q[12] + circularLeft(q[13], 19) |
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+ q[14] + circularLeft(q[15], 23) |
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+ q[16] + circularLeft(q[17], 27) |
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+ ((q[18] >>> 1) ^ q[18]) + ((q[19] >>> 2) ^ q[19]) |
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+ ((circularLeft(m[4], 5) + circularLeft(m[7], 8) |
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- circularLeft(m[14], 15) |
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+ (20 * 0x05555555)) ^ h[11])); |
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q[21] = (q[5] + circularLeft(q[6], 3) |
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+ q[7] + circularLeft(q[8], 7) |
|
+ q[9] + circularLeft(q[10], 13) |
|
+ q[11] + circularLeft(q[12], 16) |
|
+ q[13] + circularLeft(q[14], 19) |
|
+ q[15] + circularLeft(q[16], 23) |
|
+ q[17] + circularLeft(q[18], 27) |
|
+ ((q[19] >>> 1) ^ q[19]) + ((q[20] >>> 2) ^ q[20]) |
|
+ ((circularLeft(m[5], 6) + circularLeft(m[8], 9) |
|
- circularLeft(m[15], 16) |
|
+ (21 * 0x05555555)) ^ h[12])); |
|
q[22] = (q[6] + circularLeft(q[7], 3) |
|
+ q[8] + circularLeft(q[9], 7) |
|
+ q[10] + circularLeft(q[11], 13) |
|
+ q[12] + circularLeft(q[13], 16) |
|
+ q[14] + circularLeft(q[15], 19) |
|
+ q[16] + circularLeft(q[17], 23) |
|
+ q[18] + circularLeft(q[19], 27) |
|
+ ((q[20] >>> 1) ^ q[20]) + ((q[21] >>> 2) ^ q[21]) |
|
+ ((circularLeft(m[6], 7) + circularLeft(m[9], 10) |
|
- circularLeft(m[0], 1) |
|
+ (22 * 0x05555555)) ^ h[13])); |
|
q[23] = (q[7] + circularLeft(q[8], 3) |
|
+ q[9] + circularLeft(q[10], 7) |
|
+ q[11] + circularLeft(q[12], 13) |
|
+ q[13] + circularLeft(q[14], 16) |
|
+ q[15] + circularLeft(q[16], 19) |
|
+ q[17] + circularLeft(q[18], 23) |
|
+ q[19] + circularLeft(q[20], 27) |
|
+ ((q[21] >>> 1) ^ q[21]) + ((q[22] >>> 2) ^ q[22]) |
|
+ ((circularLeft(m[7], 8) + circularLeft(m[10], 11) |
|
- circularLeft(m[1], 2) |
|
+ (23 * 0x05555555)) ^ h[14])); |
|
q[24] = (q[8] + circularLeft(q[9], 3) |
|
+ q[10] + circularLeft(q[11], 7) |
|
+ q[12] + circularLeft(q[13], 13) |
|
+ q[14] + circularLeft(q[15], 16) |
|
+ q[16] + circularLeft(q[17], 19) |
|
+ q[18] + circularLeft(q[19], 23) |
|
+ q[20] + circularLeft(q[21], 27) |
|
+ ((q[22] >>> 1) ^ q[22]) + ((q[23] >>> 2) ^ q[23]) |
|
+ ((circularLeft(m[8], 9) + circularLeft(m[11], 12) |
|
- circularLeft(m[2], 3) |
|
+ (24 * 0x05555555)) ^ h[15])); |
|
q[25] = (q[9] + circularLeft(q[10], 3) |
|
+ q[11] + circularLeft(q[12], 7) |
|
+ q[13] + circularLeft(q[14], 13) |
|
+ q[15] + circularLeft(q[16], 16) |
|
+ q[17] + circularLeft(q[18], 19) |
|
+ q[19] + circularLeft(q[20], 23) |
|
+ q[21] + circularLeft(q[22], 27) |
|
+ ((q[23] >>> 1) ^ q[23]) + ((q[24] >>> 2) ^ q[24]) |
|
+ ((circularLeft(m[9], 10) + circularLeft(m[12], 13) |
|
- circularLeft(m[3], 4) |
|
+ (25 * 0x05555555)) ^ h[0])); |
|
q[26] = (q[10] + circularLeft(q[11], 3) |
|
+ q[12] + circularLeft(q[13], 7) |
|
+ q[14] + circularLeft(q[15], 13) |
|
+ q[16] + circularLeft(q[17], 16) |
|
+ q[18] + circularLeft(q[19], 19) |
|
+ q[20] + circularLeft(q[21], 23) |
|
+ q[22] + circularLeft(q[23], 27) |
|
+ ((q[24] >>> 1) ^ q[24]) + ((q[25] >>> 2) ^ q[25]) |
|
+ ((circularLeft(m[10], 11) + circularLeft(m[13], 14) |
|
- circularLeft(m[4], 5) |
|
+ (26 * 0x05555555)) ^ h[1])); |
|
q[27] = (q[11] + circularLeft(q[12], 3) |
|
+ q[13] + circularLeft(q[14], 7) |
|
+ q[15] + circularLeft(q[16], 13) |
|
+ q[17] + circularLeft(q[18], 16) |
|
+ q[19] + circularLeft(q[20], 19) |
|
+ q[21] + circularLeft(q[22], 23) |
|
+ q[23] + circularLeft(q[24], 27) |
|
+ ((q[25] >>> 1) ^ q[25]) + ((q[26] >>> 2) ^ q[26]) |
|
+ ((circularLeft(m[11], 12) + circularLeft(m[14], 15) |
|
- circularLeft(m[5], 6) |
|
+ (27 * 0x05555555)) ^ h[2])); |
|
q[28] = (q[12] + circularLeft(q[13], 3) |
|
+ q[14] + circularLeft(q[15], 7) |
|
+ q[16] + circularLeft(q[17], 13) |
|
+ q[18] + circularLeft(q[19], 16) |
|
+ q[20] + circularLeft(q[21], 19) |
|
+ q[22] + circularLeft(q[23], 23) |
|
+ q[24] + circularLeft(q[25], 27) |
|
+ ((q[26] >>> 1) ^ q[26]) + ((q[27] >>> 2) ^ q[27]) |
|
+ ((circularLeft(m[12], 13) + circularLeft(m[15], 16) |
|
- circularLeft(m[6], 7) |
|
+ (28 * 0x05555555)) ^ h[3])); |
|
q[29] = (q[13] + circularLeft(q[14], 3) |
|
+ q[15] + circularLeft(q[16], 7) |
|
+ q[17] + circularLeft(q[18], 13) |
|
+ q[19] + circularLeft(q[20], 16) |
|
+ q[21] + circularLeft(q[22], 19) |
|
+ q[23] + circularLeft(q[24], 23) |
|
+ q[25] + circularLeft(q[26], 27) |
|
+ ((q[27] >>> 1) ^ q[27]) + ((q[28] >>> 2) ^ q[28]) |
|
+ ((circularLeft(m[13], 14) + circularLeft(m[0], 1) |
|
- circularLeft(m[7], 8) |
|
+ (29 * 0x05555555)) ^ h[4])); |
|
q[30] = (q[14] + circularLeft(q[15], 3) |
|
+ q[16] + circularLeft(q[17], 7) |
|
+ q[18] + circularLeft(q[19], 13) |
|
+ q[20] + circularLeft(q[21], 16) |
|
+ q[22] + circularLeft(q[23], 19) |
|
+ q[24] + circularLeft(q[25], 23) |
|
+ q[26] + circularLeft(q[27], 27) |
|
+ ((q[28] >>> 1) ^ q[28]) + ((q[29] >>> 2) ^ q[29]) |
|
+ ((circularLeft(m[14], 15) + circularLeft(m[1], 2) |
|
- circularLeft(m[8], 9) |
|
+ (30 * 0x05555555)) ^ h[5])); |
|
q[31] = (q[15] + circularLeft(q[16], 3) |
|
+ q[17] + circularLeft(q[18], 7) |
|
+ q[19] + circularLeft(q[20], 13) |
|
+ q[21] + circularLeft(q[22], 16) |
|
+ q[23] + circularLeft(q[24], 19) |
|
+ q[25] + circularLeft(q[26], 23) |
|
+ q[27] + circularLeft(q[28], 27) |
|
+ ((q[29] >>> 1) ^ q[29]) + ((q[30] >>> 2) ^ q[30]) |
|
+ ((circularLeft(m[15], 16) + circularLeft(m[2], 3) |
|
- circularLeft(m[9], 10) |
|
+ (31 * 0x05555555)) ^ h[6])); |
|
int xl = q[16] ^ q[17] ^ q[18] ^ q[19] |
|
^ q[20] ^ q[21] ^ q[22] ^ q[23]; |
|
int xh = xl ^ q[24] ^ q[25] ^ q[26] ^ q[27] |
|
^ q[28] ^ q[29] ^ q[30] ^ q[31]; |
|
h[0] = ((xh << 5) ^ (q[16] >>> 5) ^ m[0]) + (xl ^ q[24] ^ q[0]); |
|
h[1] = ((xh >>> 7) ^ (q[17] << 8) ^ m[1]) + (xl ^ q[25] ^ q[1]); |
|
h[2] = ((xh >>> 5) ^ (q[18] << 5) ^ m[2]) + (xl ^ q[26] ^ q[2]); |
|
h[3] = ((xh >>> 1) ^ (q[19] << 5) ^ m[3]) + (xl ^ q[27] ^ q[3]); |
|
h[4] = ((xh >>> 3) ^ (q[20] << 0) ^ m[4]) + (xl ^ q[28] ^ q[4]); |
|
h[5] = ((xh << 6) ^ (q[21] >>> 6) ^ m[5]) + (xl ^ q[29] ^ q[5]); |
|
h[6] = ((xh >>> 4) ^ (q[22] << 6) ^ m[6]) + (xl ^ q[30] ^ q[6]); |
|
h[7] = ((xh >>> 11) ^ (q[23] << 2) ^ m[7]) |
|
+ (xl ^ q[31] ^ q[7]); |
|
h[8] = circularLeft(h[4], 9) + (xh ^ q[24] ^ m[8]) |
|
+ ((xl << 8) ^ q[23] ^ q[8]); |
|
h[9] = circularLeft(h[5], 10) + (xh ^ q[25] ^ m[9]) |
|
+ ((xl >>> 6) ^ q[16] ^ q[9]); |
|
h[10] = circularLeft(h[6], 11) + (xh ^ q[26] ^ m[10]) |
|
+ ((xl << 6) ^ q[17] ^ q[10]); |
|
h[11] = circularLeft(h[7], 12) + (xh ^ q[27] ^ m[11]) |
|
+ ((xl << 4) ^ q[18] ^ q[11]); |
|
h[12] = circularLeft(h[0], 13) + (xh ^ q[28] ^ m[12]) |
|
+ ((xl >>> 3) ^ q[19] ^ q[12]); |
|
h[13] = circularLeft(h[1], 14) + (xh ^ q[29] ^ m[13]) |
|
+ ((xl >>> 4) ^ q[20] ^ q[13]); |
|
h[14] = circularLeft(h[2], 15) + (xh ^ q[30] ^ m[14]) |
|
+ ((xl >>> 7) ^ q[21] ^ q[14]); |
|
h[15] = circularLeft(h[3], 16) + (xh ^ q[31] ^ m[15]) |
|
+ ((xl >>> 2) ^ q[22] ^ q[15]); |
|
} |
|
|
|
/** @see DigestEngine */ |
|
protected void doPadding(byte[] output, int outputOffset) |
|
{ |
|
byte[] buf = getBlockBuffer(); |
|
int ptr = flush(); |
|
long bitLen = (getBlockCount() << 9) + (ptr << 3); |
|
buf[ptr ++] = (byte)0x80; |
|
if (ptr > 56) { |
|
for (int i = ptr; i < 64; i ++) |
|
buf[i] = 0; |
|
processBlock(buf); |
|
ptr = 0; |
|
} |
|
for (int i = ptr; i < 56; i ++) |
|
buf[i] = 0; |
|
encodeLEInt((int)bitLen, buf, 56); |
|
encodeLEInt((int)(bitLen >>> 32), buf, 60); |
|
processBlock(buf); |
|
int[] tmp = H; |
|
H = H2; |
|
H2 = tmp; |
|
System.arraycopy(FINAL, 0, H, 0, 16); |
|
compress(H2); |
|
int outLen = getDigestLength() >>> 2; |
|
for (int i = 0, j = 16 - outLen; i < outLen; i ++, j ++) |
|
encodeLEInt(H[j], output, outputOffset + 4 * i); |
|
} |
|
|
|
/** @see DigestEngine */ |
|
protected void doInit() |
|
{ |
|
M = new int[16]; |
|
H = new int[16]; |
|
H2 = new int[16]; |
|
Q = new int[32]; |
|
engineReset(); |
|
} |
|
|
|
/** |
|
* Encode the 32-bit word {@code val} into the array |
|
* {@code buf} at offset {@code off}, in little-endian |
|
* convention (least significant byte first). |
|
* |
|
* @param val the value to encode |
|
* @param buf the destination buffer |
|
* @param off the destination offset |
|
*/ |
|
private static final void encodeLEInt(int val, byte[] buf, int off) |
|
{ |
|
buf[off + 0] = (byte)val; |
|
buf[off + 1] = (byte)(val >>> 8); |
|
buf[off + 2] = (byte)(val >>> 16); |
|
buf[off + 3] = (byte)(val >>> 24); |
|
} |
|
|
|
/** |
|
* Decode a 32-bit little-endian word from the array {@code buf} |
|
* at offset {@code off}. |
|
* |
|
* @param buf the source buffer |
|
* @param off the source offset |
|
* @return the decoded value |
|
*/ |
|
private static final int decodeLEInt(byte[] buf, int off) |
|
{ |
|
return ((buf[off + 3] & 0xFF) << 24) |
|
| ((buf[off + 2] & 0xFF) << 16) |
|
| ((buf[off + 1] & 0xFF) << 8) |
|
| (buf[off + 0] & 0xFF); |
|
} |
|
|
|
/** |
|
* Perform a circular rotation by {@code n} to the left |
|
* of the 32-bit word {@code x}. The {@code n} parameter |
|
* must lie between 1 and 31 (inclusive). |
|
* |
|
* @param x the value to rotate |
|
* @param n the rotation count (between 1 and 31) |
|
* @return the rotated value |
|
*/ |
|
private static final int circularLeft(int x, int n) |
|
{ |
|
return (x << n) | (x >>> (32 - n)); |
|
} |
|
|
|
/** @see DigestEngine */ |
|
protected void processBlock(byte[] data) |
|
{ |
|
for (int i = 0; i < 16; i ++) |
|
M[i] = decodeLEInt(data, i * 4); |
|
compress(M); |
|
} |
|
|
|
/** @see Digest */ |
|
public String toString() |
|
{ |
|
return "BMW-" + (getDigestLength() << 3); |
|
} |
|
}
|
|
|