YubiCloud Validation Servers

Yubico has declared end-of-life for the YubiKey Validation Server (YK-VAL) and YubiKey Key Storage Module (YK-KSM). These have been moved to YubicoLabs as a reference architecture. See article, YK-VAL, YK-KSM and YubiHSM 1 End-of-Life.

If you don’t want to use YubiCloud, you can host one of these validation server(s) yourself.

PHP validation server

yubikey-val

PHP key storage module

yubikey-ksm

Third party implementations can be discovered on GitHub for example.