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


PHP key storage module


Third party implementations can be discovered on GitHub for example.