Open Source Software
We offer our software as open source to help the YubiKey community develop compelling applications
Implementations of web service API for authentication to the YubiCloud or to implement your own validation server.
Resources to allow users to host their own YubiKey validation server.
Free software libraries for the decryption and parsing of YubiKey One-Time Passwords.
Libraries for the development and programming of YubiKeys.
The ModHex Calculator converts values between different data encoding formats.
Yubico's published projects on GitHub. Please note that not all projects are available via GitHub