Commit e0be22b6c0
Changed files (1)
lib
std
crypto
aes
lib/std/crypto/aes/soft.zig
@@ -489,21 +489,18 @@ fn generateTable(invert: bool) [4][256]u32 {
fn mul(a: u8, b: u8) u8 {
@setEvalBranchQuota(30000);
- var i: u9 = a;
- var j: u8 = b;
- var k: u8 = 1;
+ var i: u8 = a;
+ var j: u9 = b;
var s: u9 = 0;
- while (k < 0x100 and j != 0) : (k <<= 1) {
- if (j & k != 0) {
- s ^= i;
- j ^= k;
+ while (i > 0) : (i >>= 1) {
+ if (i & 1 != 0) {
+ s ^= j;
}
- i <<= 1;
-
- if (i & 0x100 != 0) {
- i ^= poly;
+ j *= 2;
+ if (j & 0x100 != 0) {
+ j ^= poly;
}
}