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; libcrash -- cryptographic hash functions |
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; libcrash -- cryptographic hash functions |
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; |
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; |
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; Copyright (C) 2012-2013 Ivan Baravy (dunkaist) |
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; Copyright (C) 2012-2013,2016 Ivan Baravy (dunkaist) |
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; |
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; |
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; This program is free software: you can redistribute it and/or modify |
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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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; 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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; 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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; (at your option) any later version. |
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; GNU General Public License for more details. |
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; GNU General Public License for more details. |
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; |
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; |
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; You should have received a copy of the GNU General Public License |
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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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; along with this program. If not, see . |
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MD4_BLOCK_SIZE = 64 |
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MD4_HASH_SIZE = 16 |
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MD4_ALIGN = 4 |
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MD4_ALIGN_MASK = MD4_ALIGN - 1 |
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struct ctx_md4 |
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hash rb MD4_HASH_SIZE |
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block rb MD4_BLOCK_SIZE |
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index rd 1 |
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msglen_0 rd 1 |
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msglen_1 rd 1 |
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ends |
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macro crash.md4.f b, c, d |
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macro md4._.f b, c, d |
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{ |
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{ |
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push c |
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mov eax, c |
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xor c, d |
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xor eax, d |
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and b, c |
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and eax, b |
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xor b, d |
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pop c |
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xor eax, d |
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} |
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} |
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macro crash.md4.g b, c, d |
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macro md4._.g b, c, d |
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{ |
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{ |
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push c d |
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push c d |
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mov edi, b |
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mov eax, b |
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and b, c |
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and eax, c |
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and c, d |
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and c, d |
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and d, edi |
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and d, b |
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or b, c |
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or eax, c |
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or b, d |
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or eax, d |
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pop d c |
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pop d c |
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} |
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} |
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macro md4._.h b, c, d |
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macro crash.md4.h b, c, d |
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{ |
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{ |
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mov eax, b |
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xor b, c |
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xor eax, c |
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xor b, d |
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xor eax, d |
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} |
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} |
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macro crash.md4.round func, a, b, c, d, index, shift, ac |
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{ |
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macro md4._.round func, a, b, c, d, index, shift, ac |
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push b |
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{ |
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func b, c, d |
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lea a, [a + b + ac] |
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func b, c, d |
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mov edi, [_md4] |
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shl eax, 3 |
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add [edi + 0x0], eax |
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mov dword[edi], eax |
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mov dword[edi+4], edx |
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lea esi, [ebx + ctx_md4.block] |
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lea eax, [ebx + ctx_md4.hash] |
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stdcall md4._.block, eax |
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