OpenCA PKI It's an "OpenSource Certification Authority Toolkit". The OpenCA? Project is a collaborative effort to develop a robust, full-featured and Open Source out-of-the-box Certification Authority implementing the most used protocols with full-strength cryptography world-wide. OpenCA? is based on many Open-Source Projects. Among the supported software is OpenLDAP?, OpenSSL?, Apache Project, Apache mod_ssl. The project development is divided in two main tasks: studying and refining the security scheme that guarantees the best model to be used in a CA and developing software to easily setup and manage a Certification Authority.