void round_function(uint8_t *data,uint8_t *rkey,uint8_t mode){
uint8_t i, temp[4];
for(i=0;i<8;i++) data[i] ^= READ_ROUND_KEY_BYTE(rkey[i]);
if(mode==ENC){
S_layer(data)
L_layer(data)
}
else if(mode==DEC){
L_layerInv(data)
S_layer(data)
}
else{//last-enc or first-dec round
S_layer(data)
}
}
void round_functionNoKS(uint8_t *data,uint8_t *rkey,uint8_t mode,uint8_t round){
uint8_t i;
if(mode==LST) S_layer(data);//last-enc or first-dec round
else{
for(i=0;i<4;i++){
data[2*i] ^= READ_ROUND_KEY_BYTE(rkey[2*i]);
if(mode==ENC) data[2*i+1] ^= (READ_ROUND_KEY_BYTE(rkey[2*i+1])+READ_ROUND_CONSTANT_BYTE(round_constants[round*4+i]));
else data[2*i+1] ^= (READ_ROUND_KEY_BYTE(rkey[2*i+1])+READ_ROUND_CONSTANT_BYTE(round_constants[76-round*4+i]));
}
if(mode==ENC){
S_layer(data);
L_layer(data);
}
else if(mode==DEC){
L_layerInv(data);
S_layer(data);
}
}
}
