libcrash:
move common code parts from all the *hash*.asm files to libcrash.asm replace procedures to macroses in sha1 in favour of readability and uniformity add license notes git-svn-id: svn://kolibrios.org@3431 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
@@ -1,3 +1,20 @@
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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 <http://www.gnu.org/licenses/>.
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format MS COFF
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public @EXPORT as 'EXPORTS'
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@@ -11,8 +28,8 @@ include '../../../../config.inc'
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purge section,mov,add,sub
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section '.flat' code readable align 16
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include 'libcrash.inc'
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include 'crc32.asm'
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include 'md4.asm'
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include 'md5.asm'
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include 'sha1.asm'
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@@ -21,101 +38,207 @@ include 'sha384_512.asm'
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proc lib_init
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; generate crc32 table
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bts [crash._.init_flags], 0
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jc .crc32_table_done
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mov edi, crash._.crc32_table
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xor ecx, ecx
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mov edx, 0xedb88320
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.1:
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mov ebx, 8
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mov eax, ecx
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.2:
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shr eax, 1
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jnc @f
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xor eax, edx
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@@:
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dec ebx
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jnz .2
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stosd
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inc cl
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jnz .1
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.crc32_table_done:
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ret
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endp
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proc crash.hash _type, _hash, _data, _len, _callback, _msglen
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proc crash.hash _hid, _hash, _data, _len, _callback, _msglen
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locals
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hash_func rd 1
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final rd 1
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hi rd 1
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endl
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mov eax, [_type]
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mov ecx, eax
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and eax, 0x000000ff
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sub eax, 1
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mov edx, [crash._.table + eax*8]
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mov esi, [crash._.table + eax*8 + 4]
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mov eax, [_hid]
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imul eax, sizeof.crash_item
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lea eax, [crash._.table + eax]
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mov [hi], eax
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mov eax, [hi]
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mov edx, [eax + crash_item.function]
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mov esi, [eax + crash_item.init_val]
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mov edi, [_hash]
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mov [hash_func], edx
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and ecx, 0x0000ff00
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shr ecx, 8
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mov ecx, [hi]
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mov ecx, [ecx + crash_item.len_in]
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rep movsd
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stdcall [hash_func], [_hash], [_data], [_len], [_callback], [_msglen]
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mov [final], 0
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.first:
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mov eax, [_msglen]
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mov ecx, [_len]
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add [eax], ecx
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mov esi, [_data]
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test ecx, ecx
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jz .callback
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.begin:
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mov eax, [hi]
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mov eax, [eax + crash_item.len_blk]
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sub [_len], eax
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jnc @f
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add [_len], eax
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jmp .endofblock
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@@:
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stdcall [hash_func], [_hash], [_data]
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jmp .begin
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.endofblock:
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cmp [final], 1
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je .quit
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.callback:
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call [_callback]
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test eax, eax
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jz @f
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mov [_len], eax
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jmp .first
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@@:
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mov edi, [_data]
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mov ecx, [_len]
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rep movsb
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mov eax, [_msglen]
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mov eax, [eax]
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mov edx, [hi]
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mov edx, [edx + crash_item.len_blk]
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sub edx, 1
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and eax, edx
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mov edx, [hi]
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mov ecx, [edx + crash_item.len_blk]
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sub ecx, [edx + crash_item.len_size]
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sub ecx, eax
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ja @f
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add ecx, [edx + crash_item.len_blk]
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@@:
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add [_len], ecx
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mov eax, [hi]
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mov byte[edi], 0x80
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add edi, 1
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sub ecx, 1
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mov al, 0
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rep stosb
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push ecx
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xor eax, eax
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mov ecx, [hi]
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mov ecx, [ecx + crash_item.len_size]
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sub ecx, 8 ; FIXME for > 2^64 input length
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shr ecx, 2
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rep stosd
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pop ecx
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mov eax, [_msglen]
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mov eax, [eax]
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mov edx, 8
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mul edx
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mov ecx, [hi]
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cmp [ecx + crash_item.endianness], LIBCRASH_ENDIAN_BIG
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jne @f
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bswap eax
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bswap edx
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xchg eax, edx
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@@:
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mov dword[edi], eax
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mov dword[edi + 4], edx
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mov ecx, [hi]
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mov eax, [ecx + crash_item.len_size]
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add [_len], eax
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mov [final], 1
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jmp .first
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.quit:
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mov eax, [hi]
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stdcall [eax + crash_item.postproc], [eax + crash_item.len_out], [_hash]
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ret
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endp
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proc crash.bin2hex _bin, _hex, _type
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xor eax, eax
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proc crash._.md4_md5_postprocess _len_out, _hash
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ret
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endp
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proc crash._.sha1_224_256_postprocess _len_out, _hash
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mov ecx, [_len_out]
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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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proc crash._.sha384_512_postprocess _len_out, _hash
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mov ecx, [_len_out]
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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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mov ebx, eax
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lodsd
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bswap eax
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bswap ebx
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stosd
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mov eax, ebx
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stosd
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dec ecx
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jnz @b
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emms
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ret
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endp
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proc crash.bin2hex _bin, _hex, _hid ; FIXME _hid param?
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mov eax, [_hid]
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imul eax, sizeof.crash_item
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mov ecx, [crash._.table + eax + crash_item.len_out]
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mov ebx, crash._.bin2hex_table
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mov esi, [_bin]
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mov edi, [_hex]
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mov ecx, [_type]
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and ecx, 0x00ff0000
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shr ecx, 16 - 2
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.byte:
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shl ecx, 2
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.next_byte:
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xor eax, eax
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lodsb
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mov ah, al
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shr ah, 4
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and al, 0x0f
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shl eax, 4
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shr al, 4
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xlatb
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xchg al, ah
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xlatb
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stosw
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dec ecx
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jnz .byte
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jnz .next_byte
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xor al, al
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stosb
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ret
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endp
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crash._.bin2hex_table db '0123456789abcdef'
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crash._.table: ; hash function, address of initial hash value
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dd crash.crc32, crash._.crc_init
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dd crash.md4, crash._.md4_init
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dd crash.md5, crash._.md5_init
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dd crash.sha1, crash._.sha1_init
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dd crash.sha256, crash._.sha224_init
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dd crash.sha256, crash._.sha256_init
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dd crash.sha512, crash._.sha384_init
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dd crash.sha512, crash._.sha512_init
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; see crash_item struct for details
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crash._.table dd crash.md4, crash._.md4_init, crash._.md4_md5_postprocess, 4, 4, 64, 8, 0
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dd crash.md5, crash._.md5_init, crash._.md4_md5_postprocess, 4, 4, 64, 8, 0
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dd crash.sha1, crash._.sha1_init, crash._.sha1_224_256_postprocess, 5, 5, 64, 8, 1
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dd crash.sha256, crash._.sha224_init, crash._.sha1_224_256_postprocess, 8, 7, 64, 8, 1
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dd crash.sha256, crash._.sha256_init, crash._.sha1_224_256_postprocess, 8, 8, 64, 8, 1
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dd crash.sha512, crash._.sha384_init, crash._.sha384_512_postprocess, 16, 12, 128, 16, 1
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dd crash.sha512, crash._.sha512_init, crash._.sha384_512_postprocess, 16, 16, 128, 16, 1
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crash._.crc_init dd 0xffffffff
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crash._.md4_init:
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crash._.md5_init:
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crash._.sha1_init dd 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0
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crash._.sha224_init dd 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939, 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4
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crash._.sha256_init dd 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
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crash._.sha384_init dq 0xcbbb9d5dc1059ed8, 0x629a292a367cd507, 0x9159015a3070dd17, 0x152fecd8f70e5939,\
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0x67332667ffc00b31, 0x8eb44a8768581511, 0xdb0c2e0d64f98fa7, 0x47b5481dbefa4fa4
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crash._.sha512_init dq 0x6a09e667f3bcc908, 0xbb67ae8584caa73b, 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1,\
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0x510e527fade682d1, 0x9b05688c2b3e6c1f, 0x1f83d9abfb41bd6b, 0x5be0cd19137e2179
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crash._.init_flags dd 0
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crash._.sha256_table dd 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,\
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,\
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,\
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@@ -146,6 +269,7 @@ crash._.sha512_table dq 0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b
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0x28db77f523047d84, 0x32caab7b40c72493, 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c,\
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0x4cc5d4becb3e42b6, 0x597f299cfc657e2a, 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
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align 4
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@EXPORT:
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