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crypto/sha1: use math/bits.RotateLeft32 

Updates #31456
This commit is contained in:
Alexander Yastrebov 2021-10-19 02:17:11 +02:00
parent 058f019e45
commit 17ea697c5c
1 changed files with 4 additions and 4 deletions
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8
src/crypto/sha1/sha1block.go
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@ -42,7 +42,7 @@ func blockGeneric(dig *digest, p []byte) {
}
for ; i < 20; i++ {
tmp := w[(i-3)&0xf] ^ w[(i-8)&0xf] ^ w[(i-14)&0xf] ^ w[(i)&0xf]
w[i&0xf] = tmp<<1 | tmp>>(32-1)
w[i&0xf] = bits.RotateLeft32(tmp, 1)
f := b&c | (^b)&d
t := bits.RotateLeft32(a, 5) + f + e + w[i&0xf] + _K0
@ -50,21 +50,21 @@ func blockGeneric(dig *digest, p []byte) {
}
for ; i < 40; i++ {
tmp := w[(i-3)&0xf] ^ w[(i-8)&0xf] ^ w[(i-14)&0xf] ^ w[(i)&0xf]
w[i&0xf] = tmp<<1 | tmp>>(32-1)
w[i&0xf] = bits.RotateLeft32(tmp, 1)
f := b ^ c ^ d
t := bits.RotateLeft32(a, 5) + f + e + w[i&0xf] + _K1
a, b, c, d, e = t, a, bits.RotateLeft32(b, 30), c, d
}
for ; i < 60; i++ {
tmp := w[(i-3)&0xf] ^ w[(i-8)&0xf] ^ w[(i-14)&0xf] ^ w[(i)&0xf]
w[i&0xf] = tmp<<1 | tmp>>(32-1)
w[i&0xf] = bits.RotateLeft32(tmp, 1)
f := ((b | c) & d) | (b & c)
t := bits.RotateLeft32(a, 5) + f + e + w[i&0xf] + _K2
a, b, c, d, e = t, a, bits.RotateLeft32(b, 30), c, d
}
for ; i < 80; i++ {
tmp := w[(i-3)&0xf] ^ w[(i-8)&0xf] ^ w[(i-14)&0xf] ^ w[(i)&0xf]
w[i&0xf] = tmp<<1 | tmp>>(32-1)
w[i&0xf] = bits.RotateLeft32(tmp, 1)
f := b ^ c ^ d
t := bits.RotateLeft32(a, 5) + f + e + w[i&0xf] + _K3
a, b, c, d, e = t, a, bits.RotateLeft32(b, 30), c, d