apache-mod_authn_otp src 52f46798fde67051ec217437423ac5f3926acbb59e8a1f4c737182a26f87645b Apache module for one-time password authentication mod_authn_otp is an Apache web server module for two-factor authentication using one-time passwords (OTP) generated via the HOTP/OATH algorithm defined in RFC 4226. This creates a simple way to protect a web site with one-time passwords, using any RFC 4226-compliant hardware or software token device. mod_authn_otp also supports the Mobile-OTP algorithm. mod_authn_otp supports both event and time based one-time passwords. It also supports "lingering" which allows the repeated re-use of a previously used one-time password up to a configurable maximum linger time. This allows one-time passwords to be used directly in HTTP authentication without forcing the user to enter a new one-time password for every page load. mod_authn_otp supports both basic and digest authentication, and will auto-synchronize with the user's token within a configurable maximum offset (auto-synchronization is not supported with digest authentication). bero <bero@lindev.ch> https://github.com/archiecobbs/mod-authn-otp