160 lines
3.4 KiB
ArmAsm
160 lines
3.4 KiB
ArmAsm
/* shabal256-asm.S */
|
|
/*
|
|
This file is part of the AVR-Crypto-Lib.
|
|
Copyright (C) 2009 Daniel Otte (daniel.otte@rub.de)
|
|
|
|
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 3 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/>.
|
|
*/
|
|
/*
|
|
* \file shabal256-asm.S
|
|
* \author Daniel Otte
|
|
* \email daniel.otte@rub.de
|
|
* \date 2009-04-27
|
|
* \license GPLv3 or later
|
|
*/
|
|
|
|
#include "avr-asm-macros.S"
|
|
|
|
/******************************************************************************/
|
|
|
|
shabal256_iv:
|
|
/* A */
|
|
.long 0x52F84552, 0xE54B7999, 0x2D8EE3EC, 0xB9645191
|
|
.long 0xE0078B86, 0xBB7C44C9, 0xD2B5C1CA, 0xB0D2EB8C
|
|
.long 0x14CE5A45, 0x22AF50DC, 0xEFFDBC6B, 0xEB21B74A
|
|
/* B */
|
|
.long 0xB555C6EE, 0x3E710596, 0xA72A652F, 0x9301515F
|
|
.long 0xDA28C1FA, 0x696FD868, 0x9CB6BF72, 0x0AFE4002
|
|
.long 0xA6E03615, 0x5138C1D4, 0xBE216306, 0xB38B8890
|
|
.long 0x3EA8B96B, 0x3299ACE4, 0x30924DD4, 0x55CB34A5
|
|
/* C */
|
|
.long 0xB405F031, 0xC4233EBA, 0xB3733979, 0xC0DD9D55
|
|
.long 0xC51C28AE, 0xA327B8E1, 0x56C56167, 0xED614433
|
|
.long 0x88B59D60, 0x60E2CEBA, 0x758B4B8B, 0x83E82A7F
|
|
.long 0xBC968828, 0xE6E00BF7, 0xBA839E55, 0x9B491C60
|
|
|
|
/******************************************************************************/
|
|
/*
|
|
* param ctx: r24,r25
|
|
*/
|
|
.global shabal256_init
|
|
shabal256_init:
|
|
movw r26, r24
|
|
ldi r24, 1
|
|
st X+, r24
|
|
st X+, r1
|
|
st X+, r1
|
|
st X+, r1
|
|
st X+, r1
|
|
st X+, r1
|
|
st X+, r1
|
|
st X+, r1
|
|
movw r24, r26
|
|
adiw r24, 12*4+4
|
|
st X+, r24
|
|
st X+, r25
|
|
adiw r24, 4*16-1
|
|
adiw r24, 1
|
|
st X+, r24
|
|
st X+, r25
|
|
ldi r24, (12+16+16)
|
|
ldi r30, lo8(shabal256_iv)
|
|
ldi r31, hi8(shabal256_iv)
|
|
1: lpm r0, Z+
|
|
st X+, r0
|
|
lpm r0, Z+
|
|
st X+, r0
|
|
lpm r0, Z+
|
|
st X+, r0
|
|
lpm r0, Z+
|
|
st X+, r0
|
|
dec r24
|
|
brne 1b
|
|
ret
|
|
|
|
/******************************************************************************/
|
|
|
|
.global shabal256_ctx2hash
|
|
shabal256_ctx2hash:
|
|
movw r26, r24
|
|
movw r30, r22
|
|
ldd r24, Z+(8+2)
|
|
ldd r25, Z+(8+2+1)
|
|
movw r30, r24
|
|
adiw r30, (16-256/32)*4
|
|
ldi r24, 256/8
|
|
1: ld r0, Z+
|
|
st X+, r0
|
|
dec r24
|
|
brne 1b
|
|
ret
|
|
|
|
/******************************************************************************/
|
|
/*
|
|
* param dest: r24:r25
|
|
* param msg: r22:r23
|
|
* param length_b: r18:r21
|
|
*/
|
|
DST0 = 8
|
|
DST1 = 9
|
|
CTX0 = 10
|
|
CTX1 = 11
|
|
MSG0 = 12
|
|
MSG1 = 13
|
|
LEN2 = 14
|
|
LEN3 = 15
|
|
LEN0 = 16
|
|
LEN1 = 17
|
|
.global shabal256
|
|
shabal256:
|
|
push_range 8, 17
|
|
stack_alloc_large 188
|
|
adiw r30, 1 /* Z points to stack space (ctx) */
|
|
movw CTX0, r30
|
|
movw DST0, r24
|
|
movw MSG0, r22
|
|
movw LEN0, r18
|
|
movw LEN2, r20
|
|
movw r24, r30
|
|
rcall shabal256_init
|
|
2:
|
|
tst LEN2
|
|
brne 3f
|
|
tst LEN3
|
|
breq 4f
|
|
3:
|
|
movw r24, CTX0
|
|
movw r22, MSG0
|
|
rcall shabal_nextBlock
|
|
subi LEN1, 0x02
|
|
sbc LEN2, r1
|
|
sbc LEN3, r1
|
|
ldi r18, 64
|
|
add MSG0, r18
|
|
adc MSG1, r1
|
|
rjmp 2b
|
|
4:
|
|
movw r24, CTX0
|
|
movw r22, MSG0
|
|
movw r20, LEN0
|
|
rcall shabal_lastBlock
|
|
movw r24, DST0
|
|
movw r22, CTX0
|
|
rcall shabal256_ctx2hash
|
|
stack_free_large2 188
|
|
pop_range 8, 17
|
|
ret
|
|
|
|
|