+++ /dev/null
-/* shabal224-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 shabal224-asm.S
- * \author Daniel Otte
- * \email daniel.otte@rub.de
- * \date 2009-04-27
- * \license GPLv3 or later
- */
-
-#include "avr-asm-macros.S"
-
-/******************************************************************************/
-
-shabal224_iv:
- /* A */
-.long 0xA5201467, 0xA9B8D94A, 0xD4CED997, 0x68379D7B
-.long 0xA7FC73BA, 0xF1A2546B, 0x606782BF, 0xE0BCFD0F
-.long 0x2F25374E, 0x069A149F, 0x5E2DFF25, 0xFAECF061
- /* B */
-.long 0xEC9905D8, 0xF21850CF, 0xC0A746C8, 0x21DAD498
-.long 0x35156EEB, 0x088C97F2, 0x26303E40, 0x8A2D4FB5
-.long 0xFEEE44B6, 0x8A1E9573, 0x7B81111A, 0xCBC139F0
-.long 0xA3513861, 0x1D2C362E, 0x918C580E, 0xB58E1B9C
- /* C */
-.long 0xE4B573A1, 0x4C1A0880, 0x1E907C51, 0x04807EFD
-.long 0x3AD8CDE5, 0x16B21302, 0x02512C53, 0x2204CB18
-.long 0x99405F2D, 0xE5B648A1, 0x70AB1D43, 0xA10C25C2
-.long 0x16F1AC05, 0x38BBEB56, 0x9B01DC60, 0xB1096D83
-
-
-/******************************************************************************/
-/*
- * param ctx: r24,r25
- */
-.global shabal224_init
-shabal224_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(shabal224_iv)
- ldi r31, hi8(shabal224_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 shabal224_ctx2hash
-shabal224_ctx2hash:
- movw r26, r24
- movw r30, r22
- ldd r24, Z+(8+2)
- ldd r25, Z+(8+2+1)
- movw r30, r24
- adiw r30, (16-224/32)*4
- ldi r24, 224/8
-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 shabal224
-shabal224:
- 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 shabal224_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 shabal224_ctx2hash
- stack_free_large2 188
- pop_range 8, 17
- ret
-
-