constant_time_eq_8
static inline unsigned char constant_time_eq_8(unsigned int a,
return constant_time_eq_8((unsigned)(a), (unsigned)(b));
out[j] |= rotated_mac[i] & constant_time_eq_8(j, rotate_offset);
unsigned char is_block_a = constant_time_eq_8(i, index_a);
unsigned char is_block_b = constant_time_eq_8(i, index_b);