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dunkaist |
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; libcrash -- cryptographic hash functions |
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; |
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; Copyright (C) 2012-2013 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 . |
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dunkaist |
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proc crash.sha1.f |
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push ebx ecx edx |
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xor ecx, edx |
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and ebx, ecx |
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xor ebx, edx |
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mov esi, ebx |
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pop edx ecx ebx |
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ret |
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endp |
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proc crash.sha1.g |
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push ebx ecx edx |
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xor ebx, ecx |
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xor ebx, edx |
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mov esi, ebx |
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pop edx ecx ebx |
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ret |
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endp |
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proc crash.sha1.h |
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push ebx ecx edx |
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mov esi, ebx |
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and ebx, ecx |
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and ecx, edx |
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and esi, edx |
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or ebx, ecx |
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or esi, ebx |
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pop edx ecx ebx |
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ret |
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endp |
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dunkaist |
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macro crash.sha1.round f, k, c |
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{ |
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mov esi, eax |
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rol esi, 5 |
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mov [temp], esi |
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call f |
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dunkaist |
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dunkaist |
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add esi, edi |
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add [temp], esi |
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mov esi, [w + (c)*4] |
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add esi, k |
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add [temp], esi |
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mov edi, edx |
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mov edx, ecx |
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mov ecx, ebx |
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rol ecx, 30 |
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mov ebx, eax |
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mov eax, [temp] |
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} |
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proc crash.sha1 _sha1, _data |
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dunkaist |
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locals |
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dunkaist |
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temp rd 1 |
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w rd 80 |
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dunkaist |
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endl |
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lea edi, [w] |
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xor ecx, ecx |
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@@: |
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mov eax, [esi] |
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add esi, 4 |
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bswap eax |
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mov [edi], eax |
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add edi, 4 |
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add ecx, 1 |
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cmp ecx, 16 |
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jne @b |
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@@: |
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mov eax, [w + (ecx - 3)*4] |
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xor eax, [w + (ecx - 8)*4] |
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xor eax, [w + (ecx - 14)*4] |
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xor eax, [w + (ecx - 16)*4] |
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rol eax, 1 |
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mov [w + ecx*4], eax |
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add ecx, 1 |
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cmp ecx, 80 |
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jne @b |
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mov edi, [_sha1] |
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mov eax, [edi + 0x00] |
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mov ebx, [edi + 0x04] |
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mov ecx, [edi + 0x08] |
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mov edx, [edi + 0x0c] |
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mov edi, [edi + 0x10] |
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push esi |
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dunkaist |
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repeat 20 |
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crash.sha1.round crash.sha1.f, 0x5a827999, %-1 |
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end repeat |
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dunkaist |
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dunkaist |
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repeat 20 |
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crash.sha1.round crash.sha1.g, 0x6ed9eba1, %-1+20 |
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end repeat |
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dunkaist |
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dunkaist |
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repeat 20 |
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crash.sha1.round crash.sha1.h, 0x8f1bbcdc, %-1+40 |
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end repeat |
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dunkaist |
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dunkaist |
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repeat 20 |
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crash.sha1.round crash.sha1.g, 0xca62c1d6, %-1+60 |
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end repeat |
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dunkaist |
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pop esi |
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mov [temp], edi |
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mov edi, [_sha1] |
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add [edi + 0x00], eax |
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add [edi + 0x04], ebx |
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add [edi + 0x08], ecx |
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add [edi + 0x0c], edx |
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mov eax, [temp] |
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add [edi + 0x10], eax |
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ret |
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endp |
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