The next major version of OpenVPN, one of the most widely used virtual private networking technologies, will be audited by a well-known cryptography expert.
The audit will be fully funded by Private Internet Access (PIA), a popular VPN service provider that uses OpenVPN for its business. The company has contracted cryptography engineering expert Matthew Green, a professor at Johns Hopkins University in Baltimore, to carry out the evaluation with the goal of identifying any vulnerabilities in the code.
Green has experience in auditing encryption software, being one of the founders of the Open Crypto Audit Project, which organized a detailed analysis of TrueCrypt, a popular open-source full-disk encryption application. TrueCrypt has been abandoned by its original developers in 2014, but its code has since been forked and improved as part of other projects.
Green will evaluate OpenVPN 2.4, which is currently the release candidate for the next major stable version. For now, he will look for vulnerabilities in the source code that's available on GitHub, but he will compare his results with the final version when released in order to complete the audit.
Any issues that are found will be shared with the OpenVPN developers and the results of the audit will only be made public after they have been patched, PIA's Caleb Chen said in a blog post.
"Instead of going for a crowdfunded approach, Private Internet Access has elected to fund the entirety of the OpenVPN 2.4 audit ourselves because of the integral nature of OpenVPN to both the privacy community as a whole and our own company," Chen said.
The OpenVPN software is cross-platform and can be used both in server or client modes. It's therefore used by end-users to connect to VPN servers and by companies to set up such servers. The software is also integrated in commercial consumer and business products.