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156 lines
4.2 KiB
156 lines
4.2 KiB
11 years ago
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/* $Id: panama.c 216 2010-06-08 09:46:57Z tp $ */
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/*
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* PANAMA 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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#define LVAR17(b) sph_u32 \
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b ## 0, b ## 1, b ## 2, b ## 3, b ## 4, b ## 5, \
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b ## 6, b ## 7, b ## 8, b ## 9, b ## 10, b ## 11, \
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b ## 12, b ## 13, b ## 14, b ## 15, b ## 16;
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#define LVARS \
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LVAR17(a) \
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LVAR17(g) \
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LVAR17(p) \
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LVAR17(t)
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#define M17(macro) do { \
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macro( 0, 1, 2, 4); \
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macro( 1, 2, 3, 5); \
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macro( 2, 3, 4, 6); \
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macro( 3, 4, 5, 7); \
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macro( 4, 5, 6, 8); \
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macro( 5, 6, 7, 9); \
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macro( 6, 7, 8, 10); \
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macro( 7, 8, 9, 11); \
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macro( 8, 9, 10, 12); \
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macro( 9, 10, 11, 13); \
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macro(10, 11, 12, 14); \
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macro(11, 12, 13, 15); \
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macro(12, 13, 14, 16); \
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macro(13, 14, 15, 0); \
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macro(14, 15, 16, 1); \
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macro(15, 16, 0, 2); \
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macro(16, 0, 1, 3); \
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} while (0)
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#define BUPDATE1(n0, n2) do { \
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buffer[ptr24][n0] ^= buffer[ptr31][n2]; \
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buffer[ptr31][n2] ^= INW1(n2); \
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} while (0)
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#define BUPDATE do { \
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BUPDATE1(0, 2); \
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BUPDATE1(1, 3); \
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BUPDATE1(2, 4); \
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BUPDATE1(3, 5); \
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BUPDATE1(4, 6); \
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BUPDATE1(5, 7); \
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BUPDATE1(6, 0); \
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BUPDATE1(7, 1); \
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} while (0)
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#define RSTATE(n0, n1, n2, n4) (a ## n0 = state[n0])
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#define WSTATE(n0, n1, n2, n4) (state[n0] = a ## n0)
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#define GAMMA(n0, n1, n2, n4) \
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(g ## n0 = a ## n0 ^ (a ## n1 | SPH_T32(~a ## n2)))
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#define PI_ALL do { \
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p0 = g0; \
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p1 = SPH_ROTL32( g7, 1); \
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p2 = SPH_ROTL32(g14, 3); \
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p3 = SPH_ROTL32( g4, 6); \
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p4 = SPH_ROTL32(g11, 10); \
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p5 = SPH_ROTL32( g1, 15); \
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p6 = SPH_ROTL32( g8, 21); \
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p7 = SPH_ROTL32(g15, 28); \
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p8 = SPH_ROTL32( g5, 4); \
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p9 = SPH_ROTL32(g12, 13); \
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p10 = SPH_ROTL32( g2, 23); \
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p11 = SPH_ROTL32( g9, 2); \
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p12 = SPH_ROTL32(g16, 14); \
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p13 = SPH_ROTL32( g6, 27); \
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p14 = SPH_ROTL32(g13, 9); \
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p15 = SPH_ROTL32( g3, 24); \
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p16 = SPH_ROTL32(g10, 8); \
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} while (0)
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#define THETA(n0, n1, n2, n4) \
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(t ## n0 = p ## n0 ^ p ## n1 ^ p ## n4)
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#define SIGMA_ALL do { \
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a0 = t0 ^ 1; \
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a1 = t1 ^ INW2(0); \
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a2 = t2 ^ INW2(1); \
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a3 = t3 ^ INW2(2); \
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a4 = t4 ^ INW2(3); \
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a5 = t5 ^ INW2(4); \
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a6 = t6 ^ INW2(5); \
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a7 = t7 ^ INW2(6); \
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a8 = t8 ^ INW2(7); \
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a9 = t9 ^ buffer[ptr16][0]; \
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a10 = t10 ^ buffer[ptr16][1]; \
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a11 = t11 ^ buffer[ptr16][2]; \
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a12 = t12 ^ buffer[ptr16][3]; \
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a13 = t13 ^ buffer[ptr16][4]; \
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a14 = t14 ^ buffer[ptr16][5]; \
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a15 = t15 ^ buffer[ptr16][6]; \
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a16 = t16 ^ buffer[ptr16][7]; \
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} while (0)
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#define PANAMA_STEP do { \
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unsigned ptr16, ptr24, ptr31; \
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\
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ptr24 = (ptr0 - 8) & 31; \
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ptr31 = (ptr0 - 1) & 31; \
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BUPDATE; \
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M17(GAMMA); \
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PI_ALL; \
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M17(THETA); \
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ptr16 = ptr0 ^ 16; \
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SIGMA_ALL; \
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ptr0 = ptr31; \
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} while (0)
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/*
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* These macros are used to compute
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*/
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#define INC0 1
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#define INC1 2
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#define INC2 3
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#define INC3 4
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#define INC4 5
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#define INC5 6
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#define INC6 7
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#define INC7 8
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