[keccak-asm] improving last block handling (reducing stack space)
This commit is contained in:
parent
62232d4984
commit
7e757a92ed
|
@ -93,9 +93,6 @@ void keccak_lastBlock(keccak_ctx_t* ctx, const void* block, uint16_t length_b){
|
||||||
block = (uint8_t*)block + ctx->bs;
|
block = (uint8_t*)block + ctx->bs;
|
||||||
length_b -= ctx->r;
|
length_b -= ctx->r;
|
||||||
}
|
}
|
||||||
// uint8_t tmp[ctx->bs];
|
|
||||||
uint8_t pad[3];
|
|
||||||
// memset(tmp, 0x00, ctx->bs);
|
|
||||||
memxor(ctx->a, block, (length_b)/8);
|
memxor(ctx->a, block, (length_b)/8);
|
||||||
/* appand 1 */
|
/* appand 1 */
|
||||||
if(length_b & 7){
|
if(length_b & 7){
|
||||||
|
@ -107,19 +104,19 @@ void keccak_lastBlock(keccak_ctx_t* ctx, const void* block, uint16_t length_b){
|
||||||
}else{
|
}else{
|
||||||
((uint8_t*)ctx->a)[length_b / 8] ^= 0x01;
|
((uint8_t*)ctx->a)[length_b / 8] ^= 0x01;
|
||||||
}
|
}
|
||||||
pad[0] = ctx->d;
|
|
||||||
pad[1] = ctx->bs;
|
|
||||||
pad[2] = 0x01;
|
|
||||||
if(length_b / 8 + 1 + 3 <= ctx->bs){
|
if(length_b / 8 + 1 + 3 <= ctx->bs){
|
||||||
memxor((uint8_t*)ctx->a + length_b / 8 + 1, pad, 3);
|
*((uint8_t*)ctx->a + length_b / 8 + 1) ^= ctx->d;
|
||||||
|
*((uint8_t*)ctx->a + length_b / 8 + 2) ^= ctx->bs;
|
||||||
|
*((uint8_t*)ctx->a + length_b / 8 + 3) ^= 1;
|
||||||
}else{
|
}else{
|
||||||
if(length_b / 8 + 1 + 2 <= ctx->bs){
|
if(length_b / 8 + 1 + 2 <= ctx->bs){
|
||||||
memxor((uint8_t*)ctx->a + length_b / 8 + 1, pad, 2);
|
*((uint8_t*)ctx->a + length_b / 8 + 1) ^= ctx->d;
|
||||||
|
*((uint8_t*)ctx->a + length_b / 8 + 2) ^= ctx->bs;
|
||||||
keccak_f1600(ctx->a);
|
keccak_f1600(ctx->a);
|
||||||
((uint8_t*)ctx->a)[0] ^= 0x01;
|
((uint8_t*)ctx->a)[0] ^= 0x01;
|
||||||
}else{
|
}else{
|
||||||
if(length_b/8+1+1 <= ctx->bs){
|
if(length_b/8+1+1 <= ctx->bs){
|
||||||
memxor((uint8_t*)ctx->a + length_b / 8 + 1, pad, 1);
|
*((uint8_t*)ctx->a + length_b / 8 + 1) ^= ctx->d;
|
||||||
keccak_f1600(ctx->a);
|
keccak_f1600(ctx->a);
|
||||||
((uint8_t*)ctx->a)[0] ^= ctx->bs;
|
((uint8_t*)ctx->a)[0] ^= ctx->bs;
|
||||||
((uint8_t*)ctx->a)[1] ^= 0x01;
|
((uint8_t*)ctx->a)[1] ^= 0x01;
|
||||||
|
|
Loading…
Reference in New Issue