forked from KolibriOS/kolibrios
279 lines
4.9 KiB
NASM
279 lines
4.9 KiB
NASM
macro 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 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 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 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 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 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 recalculate_w n
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{
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mov edx, [w + ((n-2) and 15)*4]
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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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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 crash.sha256.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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Sigma1 edx
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add ebx, eax
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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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Sigma0 edx
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add ebx, eax
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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 crash.sha256.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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crash.sha256.round a, b, c, d, e, f, g, h, (crash._.sha256_table + (n)*4)
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}
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macro crash.sha256.round_17_64 a, b, c, d, e, f, g, h, n, rep_num
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{
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recalculate_w n
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mov edi, [w + (n)*4]
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crash.sha256.round a, b, c, d, e, f, g, h, (crash._.sha256_table + (n+16*rep_num)*4)
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}
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proc crash.sha256 _sha256, _data, _len, _callback, _msglen
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locals
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final rd 1
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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 [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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sub [_len], 64
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jnc @f
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add [_len], 64
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jmp .endofblock
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@@:
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mov edi, [_sha256]
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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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crash.sha256.round_1_16 A, B, C, D, E, F, G, H, 0
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crash.sha256.round_1_16 H, A, B, C, D, E, F, G, 1
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crash.sha256.round_1_16 G, H, A, B, C, D, E, F, 2
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crash.sha256.round_1_16 F, G, H, A, B, C, D, E, 3
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crash.sha256.round_1_16 E, F, G, H, A, B, C, D, 4
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crash.sha256.round_1_16 D, E, F, G, H, A, B, C, 5
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crash.sha256.round_1_16 C, D, E, F, G, H, A, B, 6
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crash.sha256.round_1_16 B, C, D, E, F, G, H, A, 7
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crash.sha256.round_1_16 A, B, C, D, E, F, G, H, 8
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crash.sha256.round_1_16 H, A, B, C, D, E, F, G, 9
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crash.sha256.round_1_16 G, H, A, B, C, D, E, F, 10
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crash.sha256.round_1_16 F, G, H, A, B, C, D, E, 11
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crash.sha256.round_1_16 E, F, G, H, A, B, C, D, 12
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crash.sha256.round_1_16 D, E, F, G, H, A, B, C, 13
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crash.sha256.round_1_16 C, D, E, F, G, H, A, B, 14
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crash.sha256.round_1_16 B, C, D, E, F, G, H, A, 15
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repeat 3
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crash.sha256.round_17_64 A, B, C, D, E, F, G, H, 0, %
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crash.sha256.round_17_64 H, A, B, C, D, E, F, G, 1, %
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crash.sha256.round_17_64 G, H, A, B, C, D, E, F, 2, %
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crash.sha256.round_17_64 F, G, H, A, B, C, D, E, 3, %
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crash.sha256.round_17_64 E, F, G, H, A, B, C, D, 4, %
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crash.sha256.round_17_64 D, E, F, G, H, A, B, C, 5, %
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crash.sha256.round_17_64 C, D, E, F, G, H, A, B, 6, %
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crash.sha256.round_17_64 B, C, D, E, F, G, H, A, 7, %
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crash.sha256.round_17_64 A, B, C, D, E, F, G, H, 8, %
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crash.sha256.round_17_64 H, A, B, C, D, E, F, G, 9, %
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crash.sha256.round_17_64 G, H, A, B, C, D, E, F, 10, %
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crash.sha256.round_17_64 F, G, H, A, B, C, D, E, 11, %
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crash.sha256.round_17_64 E, F, G, H, A, B, C, D, 12, %
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crash.sha256.round_17_64 D, E, F, G, H, A, B, C, 13, %
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crash.sha256.round_17_64 C, D, E, F, G, H, A, B, 14, %
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crash.sha256.round_17_64 B, C, D, E, F, G, H, A, 15, %
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end repeat
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mov edi, [_sha256]
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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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add esi, 64
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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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mov eax, [_callback]
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test eax, eax
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jz @f
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call eax
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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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and eax, 63
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mov ecx, 56
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sub ecx, eax
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ja @f
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add ecx, 64
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@@:
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add [_len], ecx
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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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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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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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add [_len], 8
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mov [final], 1
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jmp .first
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.quit:
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mov esi, [_sha256]
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mov edi, esi
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mov ecx, 8
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@@:
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lodsd
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bswap eax
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stosd
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sub ecx, 1
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jnz @b
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ret
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endp
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