🔐 A PHP library for generating one time passwords according to RFC 4226 (HOTP) and the RFC 6238 (TOTP)

Lightweight, thread-safe Java/Kotlin TOTP (time-based one-time passwords) and HOTP generator and validator for multi-factor authentication valid for both prover and verifier based on shared secret

A generator for counter- and time based authentication codes (RFC-4226/RFC-6238, Google Authenticator).

Node.js One-Time Password

Simple but Secure Generic OTP, OCRA (RFC6287), TOTP (RFC6238) & HOTP (RFC4226) solution!

🔐 Zero dependencies Deno/Bun/Node/Browser module for TOTP and HOTP generator based on RFC 6238 and RFC 4226 🗝️

[Completed] TOTP implemented with RFC2104, RFC3174, RFC4226, RFC6234, RFC6238

Cross-platform console C#/.Net implementation to generate one time passwords (TOTP/HOTP) for open authentication defined by standard RFC's (4226, 6238). Compatible with Google/Microsoft Authenticator apps.

TOTP: Time-Based One-Time Password Algorithm

🔐 Tiny & lightweight RFC 4226 & RFC 6238 compliant one-time password (HOTP/TOTP) generation & validation library for Java

a HOTP library for golang

⚠️⚒️WIP⚒️⚠️ A truely RFC complient HOTP (https://www.rfc-editor.org/rfc/rfc4226) and TOTP (https://www.rfc-editor.org/rfc/) implementation which can be used on the server and client.

!!UNMAINTAINED!! A truely RFC complient HOTP (https://www.rfc-editor.org/rfc/rfc4226) and TOTP (https://www.rfc-editor.org/rfc/rfc6238) implementation which can be used on the server and client.

A Time-Based (RFC 6238) and HMAC-Based (RFC 4226) One-Time Password Algorithm Implementation in TypeScript. Used by Ordent project I maintain.

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

Generate otp

http://www.das-labor.org/wiki/LaborTageBadge2013

Python 3 OTP Implementations

A simple library to assist with the generation of time-based and HMAC-based one-time passcodes for two-factor authentication.