The HOTP Toolkit package contains tools that are useful when deploying the one-time password HOTP technology. It contains a shared library, a command-line tool to generate and validate one-time passwords, and a PAM module (pam_hotp) to make system login or SSH use HOTP one-time passwords for authentication.
| Tags | Authentication Security OTP password PAM |
|---|---|
| Licenses | LGPLv2.1 GPLv3 |
| Operating Systems | GNU Unix Windows Mac OS X |
| Implementation | C |
Recent releases


Release Notes: In libhotp, the usersfile logic for '-' passwords now works. A build failure due to a missing sys/stat.h include on FreeBSD 7.2 was fixed. A PDF format GTK-DOC manual was included. Gnulib files were updated. The project is in the process of being renamed to OATH Toolkit in order to make room for OATH TOTP/OCRA in addition to OATH HOTP.