subtle

func ConstantTimeCompare ¶

func ConstantTimeCompare(x, y []byte) int

func ConstantTimeLessOrEqBytes ¶

func ConstantTimeLessOrEqBytes(x, y []byte) int

ConstantTimeLessOrEqBytes returns 1 if x <= y and 0 otherwise. The comparison is lexigraphical, or big-endian. The time taken is a function of the length of the slices and is independent of the contents. If the lengths of x and y do not match it returns 0 immediately.