forked from KolibriOS/kolibrios
400 lines
12 KiB
NASM
400 lines
12 KiB
NASM
; libcrash -- cryptographic hash functions
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;
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; Copyright (C) 2012-2013,2016 Ivan Baravy (dunkaist)
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <http://www.gnu.org/licenses/>.
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macro sha224256._.chn x, y, z
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{
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mov eax, [y]
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xor eax, [z]
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and eax, [x]
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xor eax, [z]
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}
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macro sha224256._.maj x, y, z
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{
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mov eax, [x]
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xor eax, [y]
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and eax, [z]
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mov ecx, [x]
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and ecx, [y]
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xor eax, ecx
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}
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macro sha224256._.Sigma0 x
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{
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mov eax, x
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mov ecx, eax
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ror ecx, 2
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ror eax, 13
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xor eax, ecx
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mov ecx, x
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ror ecx, 22
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xor eax, ecx
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}
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macro sha224256._.Sigma1 x
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{
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mov eax, x
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mov ecx, eax
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ror ecx, 6
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ror eax, 11
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xor eax, ecx
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mov ecx, x
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ror ecx, 25
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xor eax, ecx
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}
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macro sha224256._.sigma0 x
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{
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mov eax, x
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mov ecx, eax
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ror ecx, 7
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ror eax, 18
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xor eax, ecx
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mov ecx, x
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shr ecx, 3
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xor eax, ecx
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}
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macro sha224256._.sigma1 x
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{
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mov eax, x
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mov ecx, eax
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ror ecx, 17
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ror eax, 19
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xor eax, ecx
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mov ecx, x
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shr ecx, 10
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xor eax, ecx
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}
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macro sha224256._.recalculate_w n
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{
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mov edx, [w + ((n-2) and 15)*4]
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sha224256._.sigma1 edx
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add eax, [w + ((n-7) and 15)*4]
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push eax
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mov edx, [w + ((n-15) and 15)*4]
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sha224256._.sigma0 edx
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pop ecx
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add eax, ecx
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add [w + (n)*4], eax
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}
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macro sha224256._.round a, b, c, d, e, f, g, h, k
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{
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mov ebx, [h]
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mov edx, [e]
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sha224256._.Sigma1 edx
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add ebx, eax
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sha224256._.chn e, f, g
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add ebx, eax
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add ebx, [k]
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add ebx, edi
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add [d], ebx
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mov edx, [a]
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sha224256._.Sigma0 edx
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add ebx, eax
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sha224256._.maj a, b, c
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add eax, ebx
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mov [h], eax
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}
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macro sha224256._.round_1_16 a, b, c, d, e, f, g, h, n
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{
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mov eax, [esi + (n)*4]
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bswap eax
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mov dword[w + (n)*4], eax
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mov edi, eax
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sha224256._.round a, b, c, d, e, f, g, h, (sha256_table + (n)*4)
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}
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macro sha224256._.round_17_64 a, b, c, d, e, f, g, h, n, rep_num
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{
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sha224256._.recalculate_w n
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mov edi, [w + (n)*4]
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sha224256._.round a, b, c, d, e, f, g, h, (sha256_table + (n+16*rep_num)*4)
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}
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proc sha224.init _ctx
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mov ebx, [_ctx]
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lea edi, [ebx + ctx_sha224256.hash]
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mov esi, sha224._.hash_init
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mov ecx, SHA224256_INIT_SIZE/4
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rep movsd
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xor eax, eax
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mov [ebx + ctx_sha224256.index], eax
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mov [ebx + ctx_sha224256.msglen_0], eax
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mov [ebx + ctx_sha224256.msglen_1], eax
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ret
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endp
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proc sha256.init _ctx
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mov ebx, [_ctx]
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lea edi, [ebx + ctx_sha224256.hash]
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mov esi, sha256._.hash_init
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mov ecx, SHA224256_INIT_SIZE/4
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rep movsd
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xor eax, eax
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mov [ebx + ctx_sha224256.index], eax
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mov [ebx + ctx_sha224256.msglen_0], eax
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mov [ebx + ctx_sha224256.msglen_1], eax
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ret
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endp
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proc sha224256._.block _hash
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locals
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w rd 64
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A rd 1
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B rd 1
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C rd 1
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D rd 1
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E rd 1
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F rd 1
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G rd 1
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H rd 1
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endl
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mov edi, [_hash]
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mov eax, [edi + 0x00]
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mov [A], eax
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mov eax, [edi + 0x04]
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mov [B], eax
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mov eax, [edi + 0x08]
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mov [C], eax
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mov eax, [edi + 0x0c]
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mov [D], eax
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mov eax, [edi + 0x10]
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mov [E], eax
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mov eax, [edi + 0x14]
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mov [F], eax
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mov eax, [edi + 0x18]
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mov [G], eax
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mov eax, [edi + 0x1c]
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mov [H], eax
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sha224256._.round_1_16 A, B, C, D, E, F, G, H, 0
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sha224256._.round_1_16 H, A, B, C, D, E, F, G, 1
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sha224256._.round_1_16 G, H, A, B, C, D, E, F, 2
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sha224256._.round_1_16 F, G, H, A, B, C, D, E, 3
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sha224256._.round_1_16 E, F, G, H, A, B, C, D, 4
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sha224256._.round_1_16 D, E, F, G, H, A, B, C, 5
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sha224256._.round_1_16 C, D, E, F, G, H, A, B, 6
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sha224256._.round_1_16 B, C, D, E, F, G, H, A, 7
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sha224256._.round_1_16 A, B, C, D, E, F, G, H, 8
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sha224256._.round_1_16 H, A, B, C, D, E, F, G, 9
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sha224256._.round_1_16 G, H, A, B, C, D, E, F, 10
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sha224256._.round_1_16 F, G, H, A, B, C, D, E, 11
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sha224256._.round_1_16 E, F, G, H, A, B, C, D, 12
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sha224256._.round_1_16 D, E, F, G, H, A, B, C, 13
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sha224256._.round_1_16 C, D, E, F, G, H, A, B, 14
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sha224256._.round_1_16 B, C, D, E, F, G, H, A, 15
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repeat 3
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sha224256._.round_17_64 A, B, C, D, E, F, G, H, 0, %
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sha224256._.round_17_64 H, A, B, C, D, E, F, G, 1, %
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sha224256._.round_17_64 G, H, A, B, C, D, E, F, 2, %
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sha224256._.round_17_64 F, G, H, A, B, C, D, E, 3, %
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sha224256._.round_17_64 E, F, G, H, A, B, C, D, 4, %
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sha224256._.round_17_64 D, E, F, G, H, A, B, C, 5, %
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sha224256._.round_17_64 C, D, E, F, G, H, A, B, 6, %
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sha224256._.round_17_64 B, C, D, E, F, G, H, A, 7, %
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sha224256._.round_17_64 A, B, C, D, E, F, G, H, 8, %
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sha224256._.round_17_64 H, A, B, C, D, E, F, G, 9, %
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sha224256._.round_17_64 G, H, A, B, C, D, E, F, 10, %
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sha224256._.round_17_64 F, G, H, A, B, C, D, E, 11, %
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sha224256._.round_17_64 E, F, G, H, A, B, C, D, 12, %
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sha224256._.round_17_64 D, E, F, G, H, A, B, C, 13, %
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sha224256._.round_17_64 C, D, E, F, G, H, A, B, 14, %
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sha224256._.round_17_64 B, C, D, E, F, G, H, A, 15, %
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end repeat
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mov edi, [_hash]
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mov eax, [A]
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add [edi + 0x00], eax
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mov eax, [B]
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add [edi + 0x04], eax
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mov eax, [C]
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add [edi + 0x08], eax
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mov eax, [D]
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add [edi + 0x0c], eax
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mov eax, [E]
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add [edi + 0x10], eax
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mov eax, [F]
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add [edi + 0x14], eax
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mov eax, [G]
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add [edi + 0x18], eax
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mov eax, [H]
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add [edi + 0x1c], eax
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ret
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endp
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sha256.update = sha224.update
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proc sha224.update _ctx, _msg, _size
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mov ebx, [_ctx]
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mov ecx, [_size]
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add [ebx + ctx_sha224256.msglen_0], ecx
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adc [ebx + ctx_sha224256.msglen_1], 0
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.next_block:
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mov ebx, [_ctx]
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mov esi, [_msg]
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mov eax, [ebx + ctx_sha224256.index]
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and eax, SHA224256_BLOCK_SIZE-1
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jnz .copy_to_buf
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test esi, SHA224256_ALIGN_MASK
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jnz .copy_to_buf
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.no_copy:
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; data is aligned, hash it in place without copying
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mov ebx, [_ctx]
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cmp [_size], SHA224256_BLOCK_SIZE
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jb .copy_quit
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lea eax, [ebx + ctx_sha224256.hash]
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stdcall sha224256._.block, eax
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sub [_size], SHA224256_BLOCK_SIZE
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add esi, SHA224256_BLOCK_SIZE ; FIXME
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jmp .no_copy
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.copy_to_buf:
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lea edi, [ebx + ctx_sha224256.block]
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add edi, eax
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mov ecx, SHA224256_BLOCK_SIZE
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sub ecx, eax
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cmp [_size], ecx
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jb .copy_quit
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sub [_size], ecx
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add [_msg], ecx
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add [ebx + ctx_sha224256.index], ecx
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rep movsb
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lea eax, [ebx + ctx_sha224256.hash]
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lea esi, [ebx + ctx_sha224256.block]
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stdcall sha224256._.block, eax
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jmp .next_block
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.copy_quit:
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mov ebx, [_ctx]
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lea edi, [ebx + ctx_sha224256.block]
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mov eax, [ebx + ctx_sha224256.index]
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and eax, SHA224256_BLOCK_SIZE-1
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add edi, eax
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mov ecx, [_size]
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add [ebx + ctx_sha224256.index], ecx
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rep movsb
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.quit:
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ret
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endp
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sha256.final = sha224.final
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proc sha224.final _ctx
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mov ebx, [_ctx]
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lea edi, [ebx + ctx_sha224256.block]
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mov ecx, [ebx + ctx_sha224256.msglen_0]
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and ecx, SHA224256_BLOCK_SIZE-1
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add edi, ecx
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mov byte[edi], 0x80
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inc edi
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neg ecx
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add ecx, SHA224256_BLOCK_SIZE
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cmp ecx, 8
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ja .last
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dec ecx
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xor eax, eax
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rep stosb
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lea esi, [ebx + ctx_sha224256.block]
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lea eax, [ebx + ctx_sha224256.hash]
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stdcall sha224256._.block, eax
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mov ebx, [_ctx]
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lea edi, [ebx + ctx_sha224256.block]
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mov ecx, SHA224256_BLOCK_SIZE+1
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.last:
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dec ecx
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sub ecx, 8
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xor eax, eax
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rep stosb
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mov eax, [ebx + ctx_sha224256.msglen_0]
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mov edx, [ebx + ctx_sha224256.msglen_1]
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shld edx, eax, 3
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shl eax, 3
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bswap eax
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bswap edx
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mov dword[edi], edx
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mov dword[edi+4], eax
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lea esi, [ebx + ctx_sha224256.block]
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lea eax, [ebx + ctx_sha224256.hash]
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stdcall sha224256._.block, eax
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mov ebx, [_ctx]
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lea eax, [ebx + ctx_sha224256.hash]
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stdcall sha224256._.postprocess, ebx, eax
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ret
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endp
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proc sha224256._.postprocess _ctx, _hash
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mov ecx, 8
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mov esi, [_hash]
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mov edi, esi
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@@:
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lodsd
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bswap eax
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stosd
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dec ecx
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jnz @b
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ret
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endp
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align SHA224256_ALIGN
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sha224._.hash_init dd 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,\
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0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4
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sha256._.hash_init dd 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,\
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0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
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sha256_table dd 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,\
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0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,\
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,\
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0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,\
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,\
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0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,\
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,\
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0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,\
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0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,\
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0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,\
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0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,\
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0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,\
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,\
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0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,\
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,\
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0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
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