🧰 A zero trust swiss army knife for working with X509, OAuth, JWT, OATH OTP, etc.

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.

Native Yubikey OATH protocol implementation for TOTP

A Go implementation of Yubico's YKOATH protocol

A YubiKey OATH TUI to get the OTP codes

Go package for HOTP (RFC4226) and TOTP (RFC6238)