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Ubuntu 12.04 LTS will be supported until April 2017, but Ubuntu 14.04 LTS has been around long enough, so it’s well tested and probably more common to install than 12.04 LTS. It’s supported until April 2019 [1]. [1] https://wiki.ubuntu.com/Releases
== YubiKey OTP Validation Server == The YubiKey Validation Server (YK-VAL) is a server that validates Yubikey One-Time Passwords (OTPs). YK-VAL is written in PHP, for use behind web servers such as Apache. General ------- The server implements the Yubico API protocol as defined in doc/ValidationProtocol* and further documentation is also available in the doc/ subdirectory. This server talks to a KSM service for decrypting the OTPs, to avoid storing any AES keys on the validation server. One implementation of this service is the https://developers.yubico.com/yubikey-ksm[YubiKey-KSM], and another implementation using the YubiHSM hardware is https://developers.yubico.com/python-pyhsm[PyHSM]. Note that version 1.x is a minimal centralized server. Version 2.x is a replicated system that uses multiple machines. License ------- The project is licensed under a BSD license. See the file COPYING for exact wording. For any copyright year range specified as YYYY-ZZZZ in this package note that the range specifies every single year in that closed interval.