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[keccak-asm] *_ctx2hash in asm

This commit is contained in:
bg 2013-01-12 18:27:42 +01:00
parent cd50f65c37
commit 5b6783aa50
2 changed files with 46 additions and 9 deletions
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48
keccak/keccak-asm.S
View File

@ -622,6 +622,42 @@ icall_r16_times:
ret
.endfunc
.global keccak224_ctx2hash
.func keccak224_ctx2hash
keccak224_ctx2hash:
movw r20, r22
ldi r22, lo8(224)
ldi r23, hi8(224)
rjmp keccak_ctx2hash
.endfunc
.global keccak384_ctx2hash
.func keccak384_ctx2hash
keccak384_ctx2hash:
movw r20, r22
ldi r22, lo8(384)
ldi r23, hi8(384)
rjmp keccak_ctx2hash
.endfunc
.global keccak512_ctx2hash
.func keccak512_ctx2hash
keccak512_ctx2hash:
movw r20, r22
ldi r22, lo8(512)
ldi r23, hi8(512)
rjmp keccak_ctx2hash
.endfunc
.global keccak256_ctx2hash
.func keccak256_ctx2hash
keccak256_ctx2hash:
movw r20, r22
ldi r22, lo8(256)
ldi r23, hi8(256)
.endfunc
/*
void keccak_ctx2hash(void* dest, uint16_t length_b, keccak_ctx_t* ctx){
while(length_b>=ctx->r){
@ -633,13 +669,13 @@ void keccak_ctx2hash(void* dest, uint16_t length_b, keccak_ctx_t* ctx){
memcpy(dest, ctx->a, (length_b+7)/8);
}
*/
; .global keccak_ctx2hash
; .func keccak_ctx2hash
;keccak_ctx2hash:
.global keccak_ctx2hash
.func keccak_ctx2hash
keccak_ctx2hash:
push_range 2, 10
movw r4, r20
movw r6, r24
movw ZL, r24
movw ZL, r20
movw r8, r22
subi ZL, lo8(-ctx_r)
sbci ZH, hi8(-ctx_r)
@ -650,7 +686,7 @@ void keccak_ctx2hash(void* dest, uint16_t length_b, keccak_ctx_t* ctx){
; length_b = (r9:r8) ; r = (r3:r2) ; (H:L)
cp r2, r8
cpc r3, r9
rjmp 40f
; rjmp 40f
brsh 40f
movw XL, r4
movw ZL, r6
@ -687,5 +723,5 @@ void keccak_ctx2hash(void* dest, uint16_t length_b, keccak_ctx_t* ctx){
99:
pop_range 2, 10
ret
; .endfunc
.endfunc

7
keccak/keccak-stub.c
View File

@ -136,7 +136,7 @@ void keccak_lastBlock(keccak_ctx_t* ctx, const void* block, uint16_t length_b){
}
#endif
/*
void keccak_ctx2hash(void* dest, uint16_t length_b, keccak_ctx_t* ctx){
while(length_b>=ctx->r){
memcpy(dest, ctx->a, ctx->bs);
@ -146,7 +146,8 @@ void keccak_ctx2hash(void* dest, uint16_t length_b, keccak_ctx_t* ctx){
}
memcpy(dest, ctx->a, (length_b+7)/8);
}
*/
/*
void keccak224_ctx2hash(void* dest, keccak_ctx_t* ctx){
keccak_ctx2hash(dest, 224, ctx);
}
@ -162,7 +163,7 @@ void keccak384_ctx2hash(void* dest, keccak_ctx_t* ctx){
void keccak512_ctx2hash(void* dest, keccak_ctx_t* ctx){
keccak_ctx2hash(dest, 512, ctx);
}
*/
/*
1. SHA3-224: ⌊Keccak[r = 1152, c = 448, d = 28]⌋224
2. SHA3-256: ⌊Keccak[r = 1088, c = 512, d = 32]⌋256