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; libcrash -- cryptographic hash functions |
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; libcrash -- cryptographic hash (and other) functions |
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; |
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; |
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; Copyright (C) 2012-2013,2016,2019 Ivan Baravy (dunkaist) |
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; Copyright (C) <2012-2013,2016,2019,2021> Ivan Baravy |
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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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; 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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; SPDX-License-Identifier: GPL-2.0-or-later |
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; |
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; |
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; This program is distributed in the hope that it will be useful, |
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; This program is free software: you can redistribute it and/or modify it under |
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; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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; the terms of the GNU General Public License as published by the Free Software |
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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; Foundation, either version 2 of the License, or (at your option) any later |
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; GNU General Public License for more details. |
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; version. |
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; |
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; |
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; This program is distributed in the hope that it will be useful, but WITHOUT |
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; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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; FOR A PARTICULAR PURPOSE. See the 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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; You should have received a copy of the GNU General Public License along with |
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; along with this program. If not, see . |
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; this program. If not, see . |
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CRC32_HASH_SIZE = 4 |
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CRC32_BLOCK_SIZE = 1 |
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CRC32_ALIGN = 4 |
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CRC32_ALIGN = 4 |
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CRC32_ALIGN_MASK = CRC32_ALIGN - 1 |
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CRC32_ALIGN_MASK = CRC32_ALIGN - 1 |
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struct ctx_crc32 |
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hash rd 1 |
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struct ctx_crc32 |
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ends |
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hash rd 1 |
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if defined sizeof.crash_ctx |
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ends |
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assert sizeof.crash_ctx >= sizeof.ctx_crc32 |
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end if |
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assert sizeof.ctx_crc32 <= LIBCRASH_CTX_LEN |
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proc crc32.init _ctx |
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proc crc32.init uses ebx esi edi, _ctx |
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mov ebx, [_ctx] |
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mov ebx, [_ctx] |
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lea edi, [ebx + ctx_crc32.hash] |
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lea edi, [ebx + ctx_crc32.hash] |
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mov esi, crc32._.hash_init |
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mov esi, crc32._.hash_init |
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mov ecx, 1 |
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mov ecx, 1 |
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rep movsd |
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rep movsd |
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ret |
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ret |
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endp |
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endp |
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.quit: |
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.quit: |
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ret |
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ret |
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endp |
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endp |
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proc crc32.final _ctx |
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proc crc32.finish uses ebx esi edi, _ctx |
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mov ebx, [_ctx] |
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mov ebx, [_ctx] |
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lea esi, [ebx + ctx_crc32.hash] |
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lea esi, [ebx + ctx_crc32.hash] |
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mov edi, esi |
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mov edi, esi |
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proc crc32.oneshot _ctx, _data, _len |
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proc crc32.oneshot _ctx, _data, _len |
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stdcall crc32.init, [_ctx] |
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stdcall crc32.init, [_ctx] |
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stdcall crc32.update, [_ctx], [_data], [_len] |
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stdcall crc32.update, [_ctx], [_data], [_len] |
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stdcall crc32.final, [_ctx] |
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stdcall crc32.finish, [_ctx] |
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ret |
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ret |