; libcrash -- cryptographic hash (and other) functions
;
; Copyright (C) <2013,2016,2019,2021> Ivan Baravy
;
; SPDX-License-Identifier: GPL-2.0-or-later
;
; This program is free software: you can redistribute it and/or modify it under
; the terms of the GNU General Public License as published by the Free Software
; Foundation, either version 2 of the License, or (at your option) any later
; version.
;
; This program is distributed in the hope that it will be useful, but WITHOUT
; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License along with
; this program. If not, see <http://www.gnu.org/licenses/>.
SHA3_224_BLOCK_SIZE = 144
SHA3_256_BLOCK_SIZE = 136
SHA3_384_BLOCK_SIZE = 104
SHA3_512_BLOCK_SIZE = 72
SHA3_MAX_BLOCK_SIZE = SHA3_224_BLOCK_SIZE
SHA3_INIT_SIZE = 200
SHA3_ALIGN = 16
SHA3_ALIGN_MASK = SHA3_ALIGN-1
struct ctx_sha3
hash rb SHA3_INIT_SIZE
rb SHA3_ALIGN - (SHA3_INIT_SIZE mod SHA3_ALIGN)
block rb SHA3_MAX_BLOCK_SIZE
rb SHA3_ALIGN - (SHA3_MAX_BLOCK_SIZE mod SHA3_ALIGN)
index rd 1
block_size rd 1
rounds_cnt rd 1
rd 1 ; align
; tmp vars
C rq 5
D rq 5
ends
assert sizeof.ctx_sha3 <= LIBCRASH_CTX_LEN
macro sha3._.rol_xor nd, ncl, ncr
{
movq mm0, [C + 8*(ncl)]
movq mm1, mm0
psllq mm0, 1
psrlq mm1, 63
por mm0, mm1
pxor mm0, [C + 8*(ncr)]
movq [D + 8*(nd)], mm0
}
proc sha3._.theta
;locals
; C rq 5
; D rq 5
;endl
C equ ebx + ctx_sha3.C
D equ ebx + ctx_sha3.D
repeat 5
movq mm0, [edi + 8*(%-1 + 0)]
pxor mm0, [edi + 8*(%-1 + 5)]
pxor mm0, [edi + 8*(%-1 + 10)]
pxor mm0, [edi + 8*(%-1 + 15)]
pxor mm0, [edi + 8*(%-1 + 20)]
movq [C + 8*(%-1)], mm0
end repeat
sha3._.rol_xor 0, 1, 4
sha3._.rol_xor 1, 2, 0
sha3._.rol_xor 2, 3, 1
sha3._.rol_xor 3, 4, 2
sha3._.rol_xor 4, 0, 3
repeat 5
movq mm1, [D + 8*(%-1)]
movq mm0, mm1
pxor mm0, [edi + 8*(%-1 + 0)]
movq [edi + 8*(%-1 + 0)], mm0
movq mm0, mm1
pxor mm0, [edi + 8*(%-1 + 5)]
movq [edi + 8*(%-1 + 5)], mm0
movq mm0, mm1
pxor mm0, [edi + 8*(%-1 + 10)]
movq [edi + 8*(%-1 + 10)], mm0
movq mm0, mm1
pxor mm0, [edi + 8*(%-1 + 15)]
movq [edi + 8*(%-1 + 15)], mm0
movq mm0, mm1
pxor mm0, [edi + 8*(%-1 + 20)]
movq [edi + 8*(%-1 + 20)], mm0
end repeat
restore C,D
ret
endp
proc sha3._.pi
movq mm1, [edi + 8*1]
movq mm0, [edi + 8*6]
movq [edi + 8*1], mm0
movq mm0, [edi + 8*9]
movq [edi + 8*6], mm0
movq mm0, [edi + 8*22]
movq [edi + 8*9], mm0
movq mm0, [edi + 8*14]
movq [edi + 8*22], mm0
movq mm0, [edi + 8*20]
movq [edi + 8*14], mm0
movq mm0, [edi + 8*2]
movq [edi + 8*20], mm0
movq mm0, [edi + 8*12]
movq [edi + 8*2], mm0
movq mm0, [edi + 8*13]
movq [edi + 8*12], mm0
movq mm0, [edi + 8*19]
movq [edi + 8*13], mm0
movq mm0, [edi + 8*23]
movq [edi + 8*19], mm0
movq mm0, [edi + 8*15]
movq [edi + 8*23], mm0
movq mm0, [edi + 8*4]
movq [edi + 8*15], mm0
movq mm0, [edi + 8*24]
movq [edi + 8*4], mm0
movq mm0, [edi + 8*21]
movq [edi + 8*24], mm0
movq mm0, [edi + 8*8]
movq [edi + 8*21], mm0
movq mm0, [edi + 8*16]
movq [edi + 8*8], mm0
movq mm0, [edi + 8*5]
movq [edi + 8*16], mm0
movq mm0, [edi + 8*3]
movq [edi + 8*5], mm0
movq mm0, [edi + 8*18]
movq [edi + 8*3], mm0
movq mm0, [edi + 8*17]
movq [edi + 8*18], mm0
movq mm0, [edi + 8*11]
movq [edi + 8*17], mm0
movq mm0, [edi + 8*7]
movq [edi + 8*11], mm0
movq mm0, [edi + 8*10]
movq [edi + 8*7], mm0
movq [edi + 8*10], mm1
ret
endp
proc sha3._.chi
mov eax, 0xffffffff
movd mm0, eax
movq mm2, mm0
punpckldq mm2, mm0
repeat 5
movq mm6, [edi + 8*(0 + 5*(%-1))]
movq mm7, [edi + 8*(1 + 5*(%-1))]
movq mm0, [edi + 8*(0 + 5*(%-1))]
movq mm1, mm7
pandn mm1, mm2
pand mm1, [edi + 8*(2 + 5*(%-1))]
pxor mm0, mm1
movq [edi + 8*(0 + 5*(%-1))], mm0
movq mm0, [edi + 8*(1 + 5*(%-1))]
movq mm1, [edi + 8*(2 + 5*(%-1))]
pandn mm1, mm2
pand mm1, [edi + 8*(3 + 5*(%-1))]
pxor mm0, mm1
movq [edi + 8*(1 + 5*(%-1))], mm0
movq mm0, [edi + 8*(2 + 5*(%-1))]
movq mm1, [edi + 8*(3 + 5*(%-1))]
pandn mm1, mm2
pand mm1, [edi + 8*(4 + 5*(%-1))]
pxor mm0, mm1
movq [edi + 8*(2 + 5*(%-1))], mm0
movq mm0, [edi + 8*(3 + 5*(%-1))]
movq mm1, [edi + 8*(4 + 5*(%-1))]
pandn mm1, mm2
pand mm1, mm6
pxor mm0, mm1
movq [edi + 8*(3 + 5*(%-1))], mm0
movq mm0, [edi + 8*(4 + 5*(%-1))]
movq mm1, mm6
pandn mm1, mm2
pand mm1, mm7
pxor mm0, mm1
movq [edi + 8*(4 + 5*(%-1))], mm0
end repeat
ret
endp
macro sha3._.rol_mov n, c
{
movq mm0, [edi + 8*(n)]
movq mm1, mm0
psllq mm0, (c)
psrlq mm1, (64-(c))
por mm0, mm1
movq [edi + 8*(n)], mm0
}
proc sha3._.permutation
repeat 24
stdcall sha3._.theta
sha3._.rol_mov 1, 1
sha3._.rol_mov 2, 62
sha3._.rol_mov 3, 28
sha3._.rol_mov 4, 27
sha3._.rol_mov 5, 36
sha3._.rol_mov 6, 44
sha3._.rol_mov 7, 6
sha3._.rol_mov 8, 55
sha3._.rol_mov 9, 20
sha3._.rol_mov 10, 3
sha3._.rol_mov 11, 10
sha3._.rol_mov 12, 43
sha3._.rol_mov 13, 25
sha3._.rol_mov 14, 39
sha3._.rol_mov 15, 41
sha3._.rol_mov 16, 45
sha3._.rol_mov 17, 15
sha3._.rol_mov 18, 21
sha3._.rol_mov 19, 8
sha3._.rol_mov 20, 18
sha3._.rol_mov 21, 2
sha3._.rol_mov 22, 61
sha3._.rol_mov 23, 56
sha3._.rol_mov 24, 14
stdcall sha3._.pi
stdcall sha3._.chi
movq mm0, [edi + 8*(0)]
pxor mm0, [sha3._.round + 8*(%-1)]
movq [edi + 8*(0)], mm0
end repeat
ret
endp
proc sha3._.init uses edi
mov [ebx + ctx_sha3.block_size], eax
shr eax, 3
dec eax
mov [ebx + ctx_sha3.rounds_cnt], eax
xor eax, eax
lea edi, [ebx + ctx_sha3.hash]
mov ecx, SHA3_INIT_SIZE/4
rep stosd
mov [ebx + ctx_sha3.index], eax
ret
endp
proc sha3_224.init uses ebx, _ctx
mov ebx, [_ctx]
mov eax, SHA3_224_BLOCK_SIZE
stdcall sha3._.init
ret
endp
proc sha3_256.init uses ebx, _ctx
mov ebx, [_ctx]
mov eax, SHA3_256_BLOCK_SIZE
stdcall sha3._.init
ret
endp
proc sha3_384.init uses ebx, _ctx
mov ebx, [_ctx]
mov eax, SHA3_384_BLOCK_SIZE
stdcall sha3._.init
ret
endp
proc sha3_512.init uses ebx, _ctx
mov ebx, [_ctx]
mov eax, SHA3_512_BLOCK_SIZE
stdcall sha3._.init
ret
endp
proc sha3._.block _hash
mov ecx, [ebx + ctx_sha3.rounds_cnt]
mov edi, [_hash]
@@:
movq mm0, [esi + 8*ecx]
pxor mm0, [edi + 8*ecx]
movq [edi + 8*ecx], mm0
dec ecx
jns @b
stdcall sha3._.permutation
ret
endp
sha3_224.update = sha3.update
sha3_256.update = sha3.update
sha3_384.update = sha3.update
sha3_512.update = sha3.update
proc sha3.update uses ebx esi edi, _ctx, _msg, _size
.next_block:
mov ebx, [_ctx]
mov esi, [_msg]
mov eax, [ebx + ctx_sha3.index]
test eax, eax
jnz .copy_to_buf
test esi, SHA3_ALIGN_MASK
jnz .copy_to_buf
.no_copy:
; data is aligned, hash it in place without copying
mov ebx, [_ctx]
mov eax, [ebx + ctx_sha3.block_size]
cmp [_size], eax
jb .copy_quit
lea eax, [ebx + ctx_sha3.hash]
push ebx esi
stdcall sha3._.block, eax
pop esi ebx
mov eax, [ebx + ctx_sha3.block_size]
sub [_size], eax
add esi, [ebx + ctx_sha3.block_size]
jmp .no_copy
.copy_to_buf:
lea edi, [ebx + ctx_sha3.block]
add edi, eax
mov ecx, [ebx + ctx_sha3.block_size]
sub ecx, eax
cmp [_size], ecx
jb .copy_quit
sub [_size], ecx
add [_msg], ecx
add [ebx + ctx_sha3.index], ecx
mov eax, [ebx + ctx_sha3.block_size]
cmp [ebx + ctx_sha3.index], eax
jb @f
sub [ebx + ctx_sha3.index], eax
@@:
rep movsb
lea eax, [ebx + ctx_sha3.hash]
lea esi, [ebx + ctx_sha3.block]
stdcall sha3._.block, eax
jmp .next_block
.copy_quit:
mov ebx, [_ctx]
lea edi, [ebx + ctx_sha3.block]
mov eax, [ebx + ctx_sha3.index]
add edi, eax
mov ecx, [_size]
add [ebx + ctx_sha3.index], ecx
rep movsb
.quit:
ret
endp
sha3_224.finish = sha3.finish
sha3_256.finish = sha3.finish
sha3_384.finish = sha3.finish
sha3_512.finish = sha3.finish
proc sha3.finish uses ebx esi edi, _ctx
mov ebx, [_ctx]
mov eax, [ebx + ctx_sha3.index]
mov ecx, [ebx + ctx_sha3.block_size]
sub ecx, eax
lea edi, [ebx+ctx_sha3.block]
add edi, eax
mov byte[edi], 0x06
inc edi
dec ecx
xor eax, eax
rep stosb
or byte[edi - 1], 0x80
mov ebx, [_ctx]
lea esi, [ebx + ctx_sha3.block]
lea eax, [ebx + ctx_sha3.hash]
stdcall sha3._.block, eax
mov ebx, [_ctx]
lea eax, [ebx + ctx_sha3.hash]
stdcall sha3._.postprocess, ebx, eax
ret
endp
proc sha3._.postprocess _ctx, _hash
emms
ret
endp
proc sha3_224.oneshot _ctx, _data, _len
stdcall sha3_224.init, [_ctx]
stdcall sha3.update, [_ctx], [_data], [_len]
stdcall sha3.finish, [_ctx]
ret
endp
proc sha3_256.oneshot _ctx, _data, _len
stdcall sha3_256.init, [_ctx]
stdcall sha3.update, [_ctx], [_data], [_len]
stdcall sha3.finish, [_ctx]
ret
endp
proc sha3_384.oneshot _ctx, _data, _len
stdcall sha3_384.init, [_ctx]
stdcall sha3.update, [_ctx], [_data], [_len]
stdcall sha3.finish, [_ctx]
ret
endp
proc sha3_512.oneshot _ctx, _data, _len
stdcall sha3_512.init, [_ctx]
stdcall sha3.update, [_ctx], [_data], [_len]
stdcall sha3.finish, [_ctx]
ret
endp
iglobal
align SHA3_ALIGN
sha3._.round dq 0x0000000000000001, 0x0000000000008082, 0x800000000000808A,\
0x8000000080008000, 0x000000000000808B, 0x0000000080000001,\
0x8000000080008081, 0x8000000000008009, 0x000000000000008A,\
0x0000000000000088, 0x0000000080008009, 0x000000008000000A,\
0x000000008000808B, 0x800000000000008B, 0x8000000000008089,\
0x8000000000008003, 0x8000000000008002, 0x8000000000000080,\
0x000000000000800A, 0x800000008000000A, 0x8000000080008081,\
0x8000000000008080, 0x0000000080000001, 0x8000000080008008
endg