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libcrash: cryptographic hash functions

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git-svn-id: svn://kolibrios.org@3115 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Ivan B
2012-12-15 17:23:23 +00:00
parent 8f354bd99d
commit 595e11fbff
9 changed files with 1613 additions and 0 deletions
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258
programs/develop/libraries/libcrash/trunk/sha1.asm Normal file
View File

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proc crash.sha1.f
push ebx ecx edx
xor ecx, edx
and ebx, ecx
xor ebx, edx
mov esi, ebx
pop edx ecx ebx
ret
endp
proc crash.sha1.g
push ebx ecx edx
xor ebx, ecx
xor ebx, edx
mov esi, ebx
pop edx ecx ebx
ret
endp
proc crash.sha1.h
push ebx ecx edx
mov esi, ebx
and ebx, ecx
and ecx, edx
and esi, edx
or ebx, ecx
or esi, ebx
pop edx ecx ebx
ret
endp
proc crash.sha1 _sha1, _data, _len, _callback, _msglen
locals
final rd 1
temp rd 1
counter rd 1
summand rd 1
shafunc rd 1
w rd 80
endl
mov [final], 0
.first:
mov eax, [_msglen]
mov ecx, [_len]
add [eax], ecx
mov esi, [_data]
test ecx, ecx
jz .callback
.begin:
sub [_len], 64
jnc @f
add [_len], 64
jmp .endofblock
@@:
lea edi, [w]
xor ecx, ecx
@@:
mov eax, [esi]
add esi, 4
bswap eax
mov [edi], eax
add edi, 4
add ecx, 1
cmp ecx, 16
jne @b
@@:
mov eax, [w + (ecx - 3)*4]
xor eax, [w + (ecx - 8)*4]
xor eax, [w + (ecx - 14)*4]
xor eax, [w + (ecx - 16)*4]
rol eax, 1
mov [w + ecx*4], eax
add ecx, 1
cmp ecx, 80
jne @b
mov edi, [_sha1]
mov eax, [edi + 0x00]
mov ebx, [edi + 0x04]
mov ecx, [edi + 0x08]
mov edx, [edi + 0x0c]
mov edi, [edi + 0x10]
push esi
mov [counter], 0
mov [summand], 0x5a827999
mov [shafunc], crash.sha1.f
@@:
mov esi, eax
rol esi, 5
mov [temp], esi
call [shafunc]
add esi, edi
add [temp], esi
mov esi, [counter]
mov esi, [w + esi*4]
add esi, [summand]
add [temp], esi
mov edi, edx
mov edx, ecx
mov ecx, ebx
rol ecx, 30
mov ebx, eax
mov eax, [temp]
add [counter], 1
cmp [counter], 20
jne @b
mov [summand], 0x6ed9eba1
mov [shafunc], crash.sha1.g
@@:
mov esi, eax
rol esi, 5
mov [temp], esi
call dword[shafunc]
add esi, edi
add [temp], esi
mov esi, [counter]
mov esi, [w + esi*4]
add esi, [summand]
add [temp], esi
mov edi, edx
mov edx, ecx
mov ecx, ebx
rol ecx, 30
mov ebx, eax
mov eax, [temp]
add [counter], 1
cmp [counter], 40
jne @b
mov [summand], 0x8f1bbcdc
mov [shafunc], crash.sha1.h
@@:
mov esi, eax
rol esi, 5
mov [temp], esi
call dword[shafunc]
add esi, edi
add [temp], esi
mov esi, [counter]
mov esi, [w + esi*4]
add esi, [summand]
add [temp], esi
mov edi, edx
mov edx, ecx
mov ecx, ebx
rol ecx, 30
mov ebx, eax
mov eax, [temp]
add [counter], 1
cmp [counter], 60
jne @b
mov [summand], 0xca62c1d6
mov [shafunc], crash.sha1.g
@@:
mov esi, eax
rol esi, 5
mov [temp], esi
call dword[shafunc]
add esi, edi
add [temp], esi
mov esi, [counter]
mov esi, [w + esi*4]
add esi, [summand]
add [temp], esi
mov edi, edx
mov edx, ecx
mov ecx, ebx
rol ecx, 30
mov ebx, eax
mov eax, [temp]
add [counter], 1
cmp [counter], 80
jne @b
pop esi
mov [temp], edi
mov edi, [_sha1]
add [edi + 0x00], eax
add [edi + 0x04], ebx
add [edi + 0x08], ecx
add [edi + 0x0c], edx
mov eax, [temp]
add [edi + 0x10], eax
jmp .begin
.endofblock:
cmp [final], 1
je .quit
.callback:
mov eax, [_callback]
test eax, eax
jz @f
call eax
test eax, eax
jz @f
mov [_len], eax
jmp .first
@@:
mov edi, [_data]
mov ecx, [_len]
rep movsb
mov eax, [_msglen]
mov eax, [eax]
and eax, 63
mov ecx, 56
sub ecx, eax
ja @f
add ecx, 64
@@:
add [_len], ecx
mov byte[edi], 0x80
add edi, 1
sub ecx, 1
mov al, 0
rep stosb
mov eax, [_msglen]
mov eax, [eax]
mov edx, 8
mul edx
bswap eax
bswap edx
mov dword[edi], edx
mov dword[edi + 4], eax
add [_len], 8
mov [final], 1
jmp .first
.quit:
mov esi, [_sha1]
mov edi, esi
mov ecx, 5
@@:
lodsd
bswap eax
stosd
sub ecx, 1
jnz @b
ret
endp