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350 lines
8.4 KiB
350 lines
8.4 KiB
/* $Id: skein.c 254 2011-06-07 19:38:58Z tp $ */ |
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/* |
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* Skein implementation. |
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* |
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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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* |
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* @author Thomas Pornin <thomas.pornin@cryptolog.com> |
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*/ |
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/* |
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* M9_ ## s ## _ ## i evaluates to s+i mod 9 (0 <= s <= 18, 0 <= i <= 7). |
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*/ |
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#define M9_0_0 0 |
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#define M9_0_1 1 |
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#define M9_0_2 2 |
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#define M9_0_3 3 |
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#define M9_0_4 4 |
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#define M9_0_5 5 |
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#define M9_0_6 6 |
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#define M9_0_7 7 |
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#define M9_1_0 1 |
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#define M9_1_1 2 |
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#define M9_1_2 3 |
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#define M9_1_3 4 |
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#define M9_1_4 5 |
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#define M9_1_5 6 |
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#define M9_1_6 7 |
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#define M9_1_7 8 |
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#define M9_2_0 2 |
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#define M9_2_1 3 |
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#define M9_2_2 4 |
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#define M9_2_3 5 |
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#define M9_2_4 6 |
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#define M9_2_5 7 |
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#define M9_2_6 8 |
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#define M9_2_7 0 |
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#define M9_3_0 3 |
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#define M9_3_1 4 |
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#define M9_3_2 5 |
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#define M9_3_3 6 |
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#define M9_3_4 7 |
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#define M9_3_5 8 |
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#define M9_3_6 0 |
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#define M9_3_7 1 |
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#define M9_4_0 4 |
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#define M9_4_1 5 |
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#define M9_4_2 6 |
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#define M9_4_3 7 |
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#define M9_4_4 8 |
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#define M9_4_5 0 |
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#define M9_4_6 1 |
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#define M9_4_7 2 |
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#define M9_5_0 5 |
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#define M9_5_1 6 |
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#define M9_5_2 7 |
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#define M9_5_3 8 |
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#define M9_5_4 0 |
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#define M9_5_5 1 |
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#define M9_5_6 2 |
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#define M9_5_7 3 |
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#define M9_6_0 6 |
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#define M9_6_1 7 |
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#define M9_6_2 8 |
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#define M9_6_3 0 |
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#define M9_6_4 1 |
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#define M9_6_5 2 |
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#define M9_6_6 3 |
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#define M9_6_7 4 |
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#define M9_7_0 7 |
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#define M9_7_1 8 |
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#define M9_7_2 0 |
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#define M9_7_3 1 |
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#define M9_7_4 2 |
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#define M9_7_5 3 |
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#define M9_7_6 4 |
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#define M9_7_7 5 |
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#define M9_8_0 8 |
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#define M9_8_1 0 |
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#define M9_8_2 1 |
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#define M9_8_3 2 |
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#define M9_8_4 3 |
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#define M9_8_5 4 |
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#define M9_8_6 5 |
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#define M9_8_7 6 |
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#define M9_9_0 0 |
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#define M9_9_1 1 |
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#define M9_9_2 2 |
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#define M9_9_3 3 |
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#define M9_9_4 4 |
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#define M9_9_5 5 |
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#define M9_9_6 6 |
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#define M9_9_7 7 |
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#define M9_10_0 1 |
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#define M9_10_1 2 |
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#define M9_10_2 3 |
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#define M9_10_3 4 |
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#define M9_10_4 5 |
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#define M9_10_5 6 |
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#define M9_10_6 7 |
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#define M9_10_7 8 |
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#define M9_11_0 2 |
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#define M9_11_1 3 |
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#define M9_11_2 4 |
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#define M9_11_3 5 |
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#define M9_11_4 6 |
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#define M9_11_5 7 |
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#define M9_11_6 8 |
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#define M9_11_7 0 |
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#define M9_12_0 3 |
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#define M9_12_1 4 |
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#define M9_12_2 5 |
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#define M9_12_3 6 |
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#define M9_12_4 7 |
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#define M9_12_5 8 |
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#define M9_12_6 0 |
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#define M9_12_7 1 |
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#define M9_13_0 4 |
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#define M9_13_1 5 |
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#define M9_13_2 6 |
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#define M9_13_3 7 |
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#define M9_13_4 8 |
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#define M9_13_5 0 |
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#define M9_13_6 1 |
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#define M9_13_7 2 |
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#define M9_14_0 5 |
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#define M9_14_1 6 |
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#define M9_14_2 7 |
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#define M9_14_3 8 |
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#define M9_14_4 0 |
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#define M9_14_5 1 |
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#define M9_14_6 2 |
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#define M9_14_7 3 |
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#define M9_15_0 6 |
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#define M9_15_1 7 |
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#define M9_15_2 8 |
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#define M9_15_3 0 |
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#define M9_15_4 1 |
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#define M9_15_5 2 |
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#define M9_15_6 3 |
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#define M9_15_7 4 |
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#define M9_16_0 7 |
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#define M9_16_1 8 |
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#define M9_16_2 0 |
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#define M9_16_3 1 |
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#define M9_16_4 2 |
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#define M9_16_5 3 |
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#define M9_16_6 4 |
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#define M9_16_7 5 |
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#define M9_17_0 8 |
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#define M9_17_1 0 |
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#define M9_17_2 1 |
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#define M9_17_3 2 |
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#define M9_17_4 3 |
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#define M9_17_5 4 |
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#define M9_17_6 5 |
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#define M9_17_7 6 |
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#define M9_18_0 0 |
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#define M9_18_1 1 |
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#define M9_18_2 2 |
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#define M9_18_3 3 |
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#define M9_18_4 4 |
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#define M9_18_5 5 |
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#define M9_18_6 6 |
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#define M9_18_7 7 |
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/* |
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* M3_ ## s ## _ ## i evaluates to s+i mod 3 (0 <= s <= 18, 0 <= i <= 1). |
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*/ |
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#define M3_0_0 0 |
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#define M3_0_1 1 |
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#define M3_1_0 1 |
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#define M3_1_1 2 |
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#define M3_2_0 2 |
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#define M3_2_1 0 |
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#define M3_3_0 0 |
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#define M3_3_1 1 |
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#define M3_4_0 1 |
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#define M3_4_1 2 |
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#define M3_5_0 2 |
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#define M3_5_1 0 |
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#define M3_6_0 0 |
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#define M3_6_1 1 |
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#define M3_7_0 1 |
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#define M3_7_1 2 |
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#define M3_8_0 2 |
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#define M3_8_1 0 |
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#define M3_9_0 0 |
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#define M3_9_1 1 |
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#define M3_10_0 1 |
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#define M3_10_1 2 |
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#define M3_11_0 2 |
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#define M3_11_1 0 |
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#define M3_12_0 0 |
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#define M3_12_1 1 |
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#define M3_13_0 1 |
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#define M3_13_1 2 |
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#define M3_14_0 2 |
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#define M3_14_1 0 |
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#define M3_15_0 0 |
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#define M3_15_1 1 |
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#define M3_16_0 1 |
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#define M3_16_1 2 |
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#define M3_17_0 2 |
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#define M3_17_1 0 |
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#define M3_18_0 0 |
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#define M3_18_1 1 |
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#define XCAT(x, y) XCAT_(x, y) |
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#define XCAT_(x, y) x ## y |
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#define SKBI(k, s, i) XCAT(k, XCAT(XCAT(XCAT(M9_, s), _), i)) |
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#define SKBT(t, s, v) XCAT(t, XCAT(XCAT(XCAT(M3_, s), _), v)) |
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#define TFBIG_KINIT(k0, k1, k2, k3, k4, k5, k6, k7, k8, t0, t1, t2) do { \ |
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k8 = ((k0 ^ k1) ^ (k2 ^ k3)) ^ ((k4 ^ k5) ^ (k6 ^ k7)) \ |
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^ SPH_C64(0x1BD11BDAA9FC1A22); \ |
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t2 = t0 ^ t1; \ |
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} while (0) |
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#define TFBIG_ADDKEY(w0, w1, w2, w3, w4, w5, w6, w7, k, t, s) do { \ |
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w0 = SPH_T64(w0 + SKBI(k, s, 0)); \ |
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w1 = SPH_T64(w1 + SKBI(k, s, 1)); \ |
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w2 = SPH_T64(w2 + SKBI(k, s, 2)); \ |
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w3 = SPH_T64(w3 + SKBI(k, s, 3)); \ |
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w4 = SPH_T64(w4 + SKBI(k, s, 4)); \ |
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w5 = SPH_T64(w5 + SKBI(k, s, 5) + SKBT(t, s, 0)); \ |
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w6 = SPH_T64(w6 + SKBI(k, s, 6) + SKBT(t, s, 1)); \ |
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w7 = SPH_T64(w7 + SKBI(k, s, 7) + (sph_u64)s); \ |
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} while (0) |
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#define TFBIG_MIX(x0, x1, rc) do { \ |
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x0 = SPH_T64(x0 + x1); \ |
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x1 = SPH_ROTL64(x1, rc) ^ x0; \ |
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} while (0) |
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#define TFBIG_MIX8(w0, w1, w2, w3, w4, w5, w6, w7, rc0, rc1, rc2, rc3) do { \ |
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TFBIG_MIX(w0, w1, rc0); \ |
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TFBIG_MIX(w2, w3, rc1); \ |
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TFBIG_MIX(w4, w5, rc2); \ |
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TFBIG_MIX(w6, w7, rc3); \ |
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} while (0) |
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#define TFBIG_4e(s) do { \ |
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TFBIG_ADDKEY(p0, p1, p2, p3, p4, p5, p6, p7, h, t, s); \ |
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TFBIG_MIX8(p0, p1, p2, p3, p4, p5, p6, p7, 46, 36, 19, 37); \ |
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TFBIG_MIX8(p2, p1, p4, p7, p6, p5, p0, p3, 33, 27, 14, 42); \ |
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TFBIG_MIX8(p4, p1, p6, p3, p0, p5, p2, p7, 17, 49, 36, 39); \ |
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TFBIG_MIX8(p6, p1, p0, p7, p2, p5, p4, p3, 44, 9, 54, 56); \ |
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} while (0) |
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#define TFBIG_4o(s) do { \ |
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TFBIG_ADDKEY(p0, p1, p2, p3, p4, p5, p6, p7, h, t, s); \ |
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TFBIG_MIX8(p0, p1, p2, p3, p4, p5, p6, p7, 39, 30, 34, 24); \ |
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TFBIG_MIX8(p2, p1, p4, p7, p6, p5, p0, p3, 13, 50, 10, 17); \ |
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TFBIG_MIX8(p4, p1, p6, p3, p0, p5, p2, p7, 25, 29, 39, 43); \ |
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TFBIG_MIX8(p6, p1, p0, p7, p2, p5, p4, p3, 8, 35, 56, 22); \ |
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} while (0) |
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#define UBI_BIG(etype, extra) do { \ |
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sph_u64 h8, t0, t1, t2; \ |
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sph_u64 p0 = m0; \ |
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sph_u64 p1 = m1; \ |
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sph_u64 p2 = m2; \ |
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sph_u64 p3 = m3; \ |
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sph_u64 p4 = m4; \ |
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sph_u64 p5 = m5; \ |
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sph_u64 p6 = m6; \ |
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sph_u64 p7 = m7; \ |
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t0 = SPH_T64(bcount << 6) + (sph_u64)(extra); \ |
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t1 = (bcount >> 58) + ((sph_u64)(etype) << 55); \ |
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TFBIG_KINIT(h0, h1, h2, h3, h4, h5, h6, h7, h8, t0, t1, t2); \ |
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TFBIG_4e(0); \ |
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TFBIG_4o(1); \ |
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TFBIG_4e(2); \ |
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TFBIG_4o(3); \ |
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TFBIG_4e(4); \ |
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TFBIG_4o(5); \ |
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TFBIG_4e(6); \ |
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TFBIG_4o(7); \ |
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TFBIG_4e(8); \ |
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TFBIG_4o(9); \ |
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TFBIG_4e(10); \ |
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TFBIG_4o(11); \ |
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TFBIG_4e(12); \ |
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TFBIG_4o(13); \ |
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TFBIG_4e(14); \ |
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TFBIG_4o(15); \ |
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TFBIG_4e(16); \ |
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TFBIG_4o(17); \ |
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TFBIG_ADDKEY(p0, p1, p2, p3, p4, p5, p6, p7, h, t, 18); \ |
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h0 = m0 ^ p0; \ |
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h1 = m1 ^ p1; \ |
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h2 = m2 ^ p2; \ |
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h3 = m3 ^ p3; \ |
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h4 = m4 ^ p4; \ |
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h5 = m5 ^ p5; \ |
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h6 = m6 ^ p6; \ |
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h7 = m7 ^ p7; \ |
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} while (0) |
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__constant static const sph_u64 SKEIN_IV512[] = { |
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SPH_C64(0x4903ADFF749C51CE), SPH_C64(0x0D95DE399746DF03), |
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SPH_C64(0x8FD1934127C79BCE), SPH_C64(0x9A255629FF352CB1), |
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SPH_C64(0x5DB62599DF6CA7B0), SPH_C64(0xEABE394CA9D5C3F4), |
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SPH_C64(0x991112C71A75B523), SPH_C64(0xAE18A40B660FCC33) |
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}; |
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