160 lines
3.4 KiB
ArmAsm
160 lines
3.4 KiB
ArmAsm
/* shabal256-asm.S */
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/*
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This file is part of the AVR-Crypto-Lib.
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Copyright (C) 2006-2015 Daniel Otte (bg@nerilex.org)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* \file shabal256-asm.S
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* \author Daniel Otte
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* \email bg@nerilex.org
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* \date 2009-04-27
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* \license GPLv3 or later
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*/
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#include "avr-asm-macros.S"
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/******************************************************************************/
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shabal256_iv:
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/* A */
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.long 0x52F84552, 0xE54B7999, 0x2D8EE3EC, 0xB9645191
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.long 0xE0078B86, 0xBB7C44C9, 0xD2B5C1CA, 0xB0D2EB8C
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.long 0x14CE5A45, 0x22AF50DC, 0xEFFDBC6B, 0xEB21B74A
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/* B */
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.long 0xB555C6EE, 0x3E710596, 0xA72A652F, 0x9301515F
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.long 0xDA28C1FA, 0x696FD868, 0x9CB6BF72, 0x0AFE4002
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.long 0xA6E03615, 0x5138C1D4, 0xBE216306, 0xB38B8890
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.long 0x3EA8B96B, 0x3299ACE4, 0x30924DD4, 0x55CB34A5
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/* C */
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.long 0xB405F031, 0xC4233EBA, 0xB3733979, 0xC0DD9D55
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.long 0xC51C28AE, 0xA327B8E1, 0x56C56167, 0xED614433
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.long 0x88B59D60, 0x60E2CEBA, 0x758B4B8B, 0x83E82A7F
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.long 0xBC968828, 0xE6E00BF7, 0xBA839E55, 0x9B491C60
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/******************************************************************************/
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/*
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* param ctx: r24,r25
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*/
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.global shabal256_init
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shabal256_init:
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movw r26, r24
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ldi r24, 1
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st X+, r24
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st X+, r1
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st X+, r1
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st X+, r1
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st X+, r1
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st X+, r1
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st X+, r1
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st X+, r1
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movw r24, r26
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adiw r24, 12*4+4
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st X+, r24
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st X+, r25
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adiw r24, 4*16-1
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adiw r24, 1
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st X+, r24
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st X+, r25
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ldi r24, (12+16+16)
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ldi r30, lo8(shabal256_iv)
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ldi r31, hi8(shabal256_iv)
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1: lpm r0, Z+
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st X+, r0
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lpm r0, Z+
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st X+, r0
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lpm r0, Z+
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st X+, r0
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lpm r0, Z+
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st X+, r0
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dec r24
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brne 1b
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ret
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/******************************************************************************/
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.global shabal256_ctx2hash
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shabal256_ctx2hash:
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movw r26, r24
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movw r30, r22
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ldd r24, Z+(8+2)
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ldd r25, Z+(8+2+1)
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movw r30, r24
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adiw r30, (16-256/32)*4
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ldi r24, 256/8
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1: ld r0, Z+
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st X+, r0
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dec r24
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brne 1b
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ret
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/******************************************************************************/
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/*
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* param dest: r24:r25
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* param msg: r22:r23
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* param length_b: r18:r21
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*/
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DST0 = 8
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DST1 = 9
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CTX0 = 10
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CTX1 = 11
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MSG0 = 12
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MSG1 = 13
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LEN2 = 14
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LEN3 = 15
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LEN0 = 16
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LEN1 = 17
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.global shabal256
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shabal256:
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push_range 8, 17
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stack_alloc_large 188
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adiw r30, 1 /* Z points to stack space (ctx) */
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movw CTX0, r30
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movw DST0, r24
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movw MSG0, r22
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movw LEN0, r18
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movw LEN2, r20
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movw r24, r30
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rcall shabal256_init
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2:
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tst LEN2
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brne 3f
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tst LEN3
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breq 4f
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3:
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movw r24, CTX0
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movw r22, MSG0
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rcall shabal_nextBlock
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subi LEN1, 0x02
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sbc LEN2, r1
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sbc LEN3, r1
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ldi r18, 64
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add MSG0, r18
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adc MSG1, r1
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rjmp 2b
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4:
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movw r24, CTX0
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movw r22, MSG0
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movw r20, LEN0
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rcall shabal_lastBlock
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movw r24, DST0
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movw r22, CTX0
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rcall shabal256_ctx2hash
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stack_free_large2 188
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pop_range 8, 17
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ret
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