/* Copyright (c) 2009-2010 Christopher A. Taylor. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of LibCat nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include using namespace cat; #define THREEFISH(R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, RA, RB, RC, RD, RE, RF) \ x[0] += x[1]; x[1] = CAT_ROL64(x[1], R0); x[1] ^= x[0]; \ x[2] += x[3]; x[3] = CAT_ROL64(x[3], R1); x[3] ^= x[2]; \ x[4] += x[5]; x[5] = CAT_ROL64(x[5], R2); x[5] ^= x[4]; \ x[6] += x[7]; x[7] = CAT_ROL64(x[7], R3); x[7] ^= x[6]; \ x[2] += x[1]; x[1] = CAT_ROL64(x[1], R4); x[1] ^= x[2]; \ x[4] += x[7]; x[7] = CAT_ROL64(x[7], R5); x[7] ^= x[4]; \ x[6] += x[5]; x[5] = CAT_ROL64(x[5], R6); x[5] ^= x[6]; \ x[0] += x[3]; x[3] = CAT_ROL64(x[3], R7); x[3] ^= x[0]; \ x[4] += x[1]; x[1] = CAT_ROL64(x[1], R8); x[1] ^= x[4]; \ x[6] += x[3]; x[3] = CAT_ROL64(x[3], R9); x[3] ^= x[6]; \ x[0] += x[5]; x[5] = CAT_ROL64(x[5], RA); x[5] ^= x[0]; \ x[2] += x[7]; x[7] = CAT_ROL64(x[7], RB); x[7] ^= x[2]; \ x[6] += x[1]; x[1] = CAT_ROL64(x[1], RC); x[1] ^= x[6]; \ x[0] += x[7]; x[7] = CAT_ROL64(x[7], RD); x[7] ^= x[0]; \ x[2] += x[5]; x[5] = CAT_ROL64(x[5], RE); x[5] ^= x[2]; \ x[4] += x[3]; x[3] = CAT_ROL64(x[3], RF); x[3] ^= x[4]; #define INJECTKEY(K0, K1, K2, K3, K4, K5, K6, K7, T0, T1, R) \ x[0] += (K0); \ x[1] += (K1); \ x[2] += (K2); \ x[3] += (K3); \ x[4] += (K4); \ x[5] += (K5) + (T0); \ x[6] += (K6) + (T1); \ x[7] += (K7) + (R); void Skein::HashComputation512(const void *_message, int blocks, u32 byte_count, u64 *NextState) { const int BITS = 512; const int WORDS = BITS / 64; const int BYTES = BITS / 8; const u64 *message = (const u64 *)_message; // Key schedule: Chaining u64 k[WORDS+1]; memcpy(k, State, BYTES); // Key schedule: Tweak u64 t[3]; memcpy(t, Tweak, sizeof(Tweak)); do { t[0] += byte_count; // Parity extension t[2] = t[0] ^ t[1]; k[WORDS] = 0x1BD11BDAA9FC1A22LL; // First full key injection u64 x[WORDS]; for (int ii = 0; ii < WORDS; ++ii) { x[ii] = k[ii] + getLE(message[ii]); k[WORDS] ^= k[ii]; } x[WORDS-3] += t[0]; x[WORDS-2] += t[1]; // 72 rounds // 10/26/09: Updated for SHA-3 competition Round 2 enum { R_512_0_0=46, R_512_0_1=36, R_512_0_2=19, R_512_0_3=37, R_512_1_0=33, R_512_1_1=27, R_512_1_2=14, R_512_1_3=42, R_512_2_0=17, R_512_2_1=49, R_512_2_2=36, R_512_2_3=39, R_512_3_0=44, R_512_3_1= 9, R_512_3_2=54, R_512_3_3=56, R_512_4_0=39, R_512_4_1=30, R_512_4_2=34, R_512_4_3=24, R_512_5_0=13, R_512_5_1=50, R_512_5_2=10, R_512_5_3=17, R_512_6_0=25, R_512_6_1=29, R_512_6_2=39, R_512_6_3=43, R_512_7_0= 8, R_512_7_1=35, R_512_7_2=56, R_512_7_3=22 }; #if defined(CAT_WORD_64) // Should unroll farther on 64-bit OS for (int round = 1; round <= 18; round += 6) { THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); u64 k0 = k[(round)%9]; u64 k1 = k[(round+1)%9]; u64 k2 = k[(round+2)%9]; u64 k3 = k[(round+3)%9]; u64 k4 = k[(round+4)%9]; u64 k5 = k[(round+5)%9]; u64 k6 = k[(round+6)%9]; u64 k7 = k[(round+7)%9]; u64 k8 = k[(round+8)%9]; INJECTKEY(k0, k1, k2, k3, k4, k5, k6, k7, t[1], t[2], round); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k1, k2, k3, k4, k5, k6, k7, k8, t[2], t[0], round+1); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k2, k3, k4, k5, k6, k7, k8, k0, t[0], t[1], round+2); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k3, k4, k5, k6, k7, k8, k0, k1, t[1], t[2], round+3); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k4, k5, k6, k7, k8, k0, k1, k2, t[2], t[0], round+4); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k5, k6, k7, k8, k0, k1, k2, k3, t[0], t[1], round+5); } #else for (int round = 1; round <= 18; round += 2) { THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); u64 k0 = k[(round)%9]; u64 k1 = k[(round+1)%9]; u64 k2 = k[(round+2)%9]; u64 k3 = k[(round+3)%9]; u64 k4 = k[(round+4)%9]; u64 k5 = k[(round+5)%9]; u64 k6 = k[(round+6)%9]; u64 k7 = k[(round+7)%9]; u64 k8 = k[(round+8)%9]; u64 t1 = t[(round+1)%3]; INJECTKEY(k0, k1, k2, k3, k4, k5, k6, k7, t[(round)%3], t1, round); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k1, k2, k3, k4, k5, k6, k7, k8, t1, t[(round+2)%3], round+1); } #endif /* THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k[1], k[2], k[3], k[4], k[5], k[6], k[7], k[8], t1, t2, 1); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k[2], k[3], k[4], k[5], k[6], k[7], k[8], k[0], t2, t0, 2); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k[3], k[4], k[5], k[6], k[7], k[8], k[0], k[1], t0, t1, 3); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k[4], k[5], k[6], k[7], k[8], k[0], k[1], k[2], t1, t2, 4); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k[5], k[6], k[7], k[8], k[0], k[1], k[2], k[3], t2, t0, 5); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k[6], k[7], k[8], k[0], k[1], k[2], k[3], k[4], t0, t1, 6); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k[7], k[8], k[0], k[1], k[2], k[3], k[4], k[5], t1, t2, 7); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k[8], k[0], k[1], k[2], k[3], k[4], k[5], k[6], t2, t0, 8); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k[0], k[1], k[2], k[3], k[4], k[5], k[6], k[7], t0, t1, 9); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k[1], k[2], k[3], k[4], k[5], k[6], k[7], k[8], t1, t2, 10); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k[2], k[3], k[4], k[5], k[6], k[7], k[8], k[0], t2, t0, 11); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k[3], k[4], k[5], k[6], k[7], k[8], k[0], k[1], t0, t1, 12); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k[4], k[5], k[6], k[7], k[8], k[0], k[1], k[2], t1, t2, 13); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k[5], k[6], k[7], k[8], k[0], k[1], k[2], k[3], t2, t0, 14); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k[6], k[7], k[8], k[0], k[1], k[2], k[3], k[4], t0, t1, 15); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k[7], k[8], k[0], k[1], k[2], k[3], k[4], k[5], t1, t2, 16); THREEFISH(R_512_0_0, R_512_0_1, R_512_0_2, R_512_0_3, R_512_1_0, R_512_1_1, R_512_1_2, R_512_1_3, R_512_2_0, R_512_2_1, R_512_2_2, R_512_2_3, R_512_3_0, R_512_3_1, R_512_3_2, R_512_3_3); INJECTKEY(k[8], k[0], k[1], k[2], k[3], k[4], k[5], k[6], t2, t0, 17); THREEFISH(R_512_4_0, R_512_4_1, R_512_4_2, R_512_4_3, R_512_5_0, R_512_5_1, R_512_5_2, R_512_5_3, R_512_6_0, R_512_6_1, R_512_6_2, R_512_6_3, R_512_7_0, R_512_7_1, R_512_7_2, R_512_7_3); INJECTKEY(k[0], k[1], k[2], k[3], k[4], k[5], k[6], k[7], t0, t1, 18); */ // Feedforward XOR for (int ii = 0; ii < WORDS; ++ii) k[ii] = x[ii] ^ getLE(message[ii]); // Update tweak t[1] &= ~T1_MASK_FIRST; // Eat data bytes message += WORDS; } while (--blocks > 0); // Update tweak memcpy(Tweak, t, sizeof(Tweak)); // Update state memcpy(NextState, k, BYTES); } #undef THREEFISH #undef INJECTKEY