subtle

Documentation

Index

• func BEUint64(b []byte) uint64
• func ConstantTimeCompare(x, y []byte) int
• func ConstantTimeLessOrEqBytes(x, y []byte) int

Functions

func BEUint64

func BEUint64(b []byte) uint64

BEUint64 interprets b as an 8-byte big-endian value and returns it as a uint64. It requires len(b) >= 8.

func ConstantTimeCompare

func ConstantTimeCompare(x, y []byte) int

ConstantTimeCompare returns 1 if x and y are equal and 0 otherwise.

func ConstantTimeLessOrEqBytes

func ConstantTimeLessOrEqBytes(x, y []byte) int

ConstantTimeLessOrEqBytes returns 1 if x <= y and 0 otherwise. The comparison is lexicographical, 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.