subtle - The Go Programming Language

Golang

Package subtle

import "crypto/subtle"
Overview
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Package subtle implements functions that are often useful in cryptographic code but require careful thought to use correctly.

Index

func ConstantTimeByteEq(x, y uint8) int
func ConstantTimeCompare(x, y []byte) int
func ConstantTimeCopy(v int, x, y []byte)
func ConstantTimeEq(x, y int32) int
func ConstantTimeSelect(v, x, y int) int

Package files

constant_time.go

func ConstantTimeByteEq

func ConstantTimeByteEq(x, y uint8) int

ConstantTimeByteEq returns 1 if x == y and 0 otherwise.

func ConstantTimeCompare

func ConstantTimeCompare(x, y []byte) int

ConstantTimeCompare returns 1 iff the two equal length slices, x and y, have equal contents. The time taken is a function of the length of the slices and is independent of the contents.

func ConstantTimeCopy

func ConstantTimeCopy(v int, x, y []byte)

ConstantTimeCopy copies the contents of y into x iff v == 1. If v == 0, x is left unchanged. Its behavior is undefined if v takes any other value.

func ConstantTimeEq

func ConstantTimeEq(x, y int32) int

ConstantTimeEq returns 1 if x == y and 0 otherwise.

func ConstantTimeSelect

func ConstantTimeSelect(v, x, y int) int

ConstantTimeSelect returns x if v is 1 and y if v is 0. Its behavior is undefined if v takes any other value.