The OATH Toolkit makes it easy to build one-time password authentication systems. It contains shared libraries, commandline tools, and a PAM module. Supported technologies include the event-based HOTP algorithm (RFC4226) and the time-based TOTP algorithm (RFC6238). OATH stands for Open AuTHentication, which is the organization which specifies the algorithms. For managing secret key files, the Portable Symmetric Key Container (PSKC) format described in RFC6030 is supported.
Tomld (tomoyo learning daemon) is an extension to the Tomoyo security framework. Tomoyo increases security by confining applications and services into domains using rules. Tomld automates this process, helping users harden their systems more easily. To do this, tomld starts in learning mode, creates Tomoyo domains, collects rules, changes them, and, once the rules appear to be complete, tomld enforces the policy.