gmsm/cipher/xts_generic.go
2024-09-23 17:50:16 +08:00

16 lines
352 B
Go

//go:build purego || !(amd64 || arm64 || s390x || ppc64 || ppc64le)
package cipher
func mul2(tweak *[blockSize]byte, isGB bool) {
mul2Generic(tweak, isGB)
}
func doubleTweaks(tweak *[blockSize]byte, tweaks []byte, isGB bool) {
count := len(tweaks) >> 4
for i := 0; i < count; i++ {
copy(tweaks[blockSize*i:], tweak[:])
mul2(tweak, isGB)
}
}