hotp

Documentation

Overview

Package hotp implements HMAC-based one-time passwords as defined in RFC 4226, used for counter-based two-factor authentication codes.

Index

• func Generate(secret []byte, counter uint64, digits int) string
• func Verify(secret []byte, counter uint64, code string, digits int) bool

Functions

func Generate

func Generate(secret []byte, counter uint64, digits int) string

Generate computes an RFC 4226 HOTP value for the given secret and counter, returning a zero-padded decimal string of the requested number of digits.

func Verify

func Verify(secret []byte, counter uint64, code string, digits int) bool

Verify reports whether code matches the HOTP value for the secret and counter.