X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=shabal%2Fshabal256-asm.S;fp=shabal%2Fshabal256-asm.S;h=f95e6c794656746ff3b4140bbd138e7bdc0a00c4;hb=4f50c75ee5a6cc88bf7ea71957ed509e298e6c25;hp=0000000000000000000000000000000000000000;hpb=7701e318e4e2bac7f84dbf6e368f1501814948fc;p=avr-crypto-lib.git

diff --git a/shabal/shabal256-asm.S b/shabal/shabal256-asm.S
new file mode 100644
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--- /dev/null
+++ b/shabal/shabal256-asm.S
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+/* 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
+	
+