memcpy(tk, key, KC*4);
for(t= 0; t < (rounds+1)*4;) {
- if(decrypt) memcpy(a->round_key[0 ][ t], tk, KC*4);
- else memcpy(a->round_key[rounds][-t], tk, KC*4);
-
+ memcpy(a->round_key[0][t], tk, KC*4);
t+= KC;
for(i = 0; i < 4; i++)
a->round_key[i][0][j]= sbox[a->round_key[i][0][j]];
mix(a->round_key[i], dec_multbl);
}
+ }else{
+ for(i=0; i<(rounds+1)/2; i++){
+ for(j=0; j<16; j++)
+ FFSWAP(int, a->round_key[i][0][j], a->round_key[rounds-i][0][j]);
+ }
}
return a;