gmsm/cipher/xts_generic.go

16 lines
323 B
Go

//go:build purego || !(amd64 || arm64)
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)
}
}