void av_aes_decrypt(AVAES *a){
int t, r;
+ addkey(a->state, a->round_key[a->rounds]);
for(r=a->rounds-1; r>=0; r--){
- if(r==a->rounds-1)
- addkey(a->state, a->round_key[r+1]);
- else
+ if(r!=a->rounds-1)
mix(a->state, dec_multbl);
SUBSHIFT0((a->state[0]+0), inv_sbox)
SUBSHIFT3((a->state[0]+1), inv_sbox)
SUBSHIFT1((a->state[0]+1), sbox)
SUBSHIFT2((a->state[0]+2), sbox)
SUBSHIFT3((a->state[0]+3), sbox)
- if(r==a->rounds-1)
- addkey(a->state, a->round_key[r+1]);
- else
+ if(r!=a->rounds-1)
mix(a->state, enc_multbl); //FIXME replace log8 by const / optimze mix as this can be simplified alot
}
+ addkey(a->state, a->round_key[r]);
}
static init_multbl(uint8_t tbl[256], int c[4], uint8_t *log8, uint8_t *alog8){