+++ /dev/null
-/* 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
-
-