Go-Guardian is a golang library that provides a simple, clean, and idiomatic way to create powerful modern API and web authentication.

Library to generate TOTP/HOTP codes

a2fa is a command line tool for generating and validating one-time password. Its purpose is to get rid of phones and be able to authenticate easily.

Time-Based One-Time Password (TOTP) and HMAC-Based One-Time Password (HOTP) library for Go.

TOTP MFA for teams: Shamir's Secret Sharing and zero trust OTP generation

A high-performance, zero-dependency Go package for generating and validating TOTP, HOTP and OCRA one-time passwords — RFC 4226, RFC 6238 and RFC 6287 compliant.

A Go implementation of the HOTP (RFC 4226) and TOTP (RFC 6238) algorithms.

A Go implementation of RFC 4226 HOTP: An HMAC-Based One-Time Password Algorithm and RFC 6238: TOTP: Time-Based One-Time Password Algorithm

This Go package provides implementations for One-Time Password (OTP) systems, including TOTP (Time-Based One-Time Password), HOTP (HMAC-Based One-Time Password), and OCRA (OATH Challenge-Response Algorithm). It offers a secure, flexible, and easy-to-use solution for enhancing user authentication.

A Go implementation of Yubico's YKOATH protocol

An one-time password generation library written in Go, implementing HOTP (RFC-4226) and TOTP (RFC-6238).

An implementation of RFC 4226, and RFC 6238 for the Go programming language.

One time password (OTP) library for generate two-factor authentication (2FA) tokens with golang

One Time Password package for Go/Golang developers

a HOTP library for golang

minimal hotp and totp library for golang

Implementations of several algorithms and standards around OTP

a simple HOTP implementation (RFC 4226)

Implementation of HOTP and TOTP as per the RFC RFC4226 and RFC6238 respectively

A two-factor authentication(2FA) based on HOTP & TOTP written in Go.