Open Source C Authentication Software

*NOTE* Migrated to http://github.com/cracklib/cracklib Next generation version of libCrack password checking library. As of Oct 2008 (reflected in 2.8.15 code release), licensed under LGPL.

PAM module which permits authentication for arbitrary services via ssh-agent. Written with sudo in mind, but like any auth PAM module, can be used for for many purposes.

The WiKID Strong Authentication System is a public-key based two-factor authentication system. It is a flexible, extensible, and secure alternative to tokens, certs and passwords. Application & API support exists for Java, ASP, PHP, Ruby, OpenVPN, TACACS+, etc. Read our eGuide on how to setup your network with two-factor authentication: http://www.wikidsystems.com/learn-more/two-factor-authentication-white-papers

This module provides single sign-on behavior. The user types a passphrase when logging in and is allowed in if it decrypts the user's SSH private key. An ssh-agent is started and keys are added. For the entire session, the user types no more passwords.

An open source project originally designed to provide the University of Michigan with a secure single sign-on web authentication system. Cosign is part of the National Science Foundation Middleware Initiative (NMI) EDIT software release.

raddump interprets captured RADIUS packets to print a timestamp, packet length, RADIUS packet type, source and destination hosts and ports, and included attribute names and values for each packet.

Configure Unix users and groups in a MySQL database. It is system-wide like NIS or LDAP! It features open-ended database design and persistent connections. Works with NSS-compatible systems (Linux, Solaris, FreeBSD).

A modular, flexible and extensible Identity and Access Management system for integrated login, access and profile management across disparate security domains. Supports Apache, PAM, Webcrossing, XMLRPC and SOAP from C, Perl, and Java with more to come.

PLEASE GO TO https://github.com/deksai/pam_abl A PAM module that provides auto blacklisting of hosts and users responsible for repeated failed authentication attempts. Generally configured so that blacklisted users still see normal login prompts but are guaranteed to fail to authenticate.

CPU is meant to be a swiss army knife for administrators who are currently using or wanting to use an LDAP backend for user authentication. This project allows for easy user administration of LDAP users and allows for user and group mods, deletes and add

DACS,a light-weight single sign-on and role-based security system for Apache or server-based software, provides comprehensive authentication capabilities, and powerful, transparent rule-based authorization checking for any web service or CGI program. The latest release is DACS 1.5.1 (26-Oct-2025) It is not available here! Get it at https://dacs.dss.ca/download.html

Mesh is a secure, lightweight grid middleware that is based on the addition of a single sign-on capability to the built-in public key authentication mechanism of SSH using system call interposition.

Squirm-ads is a fast & configurable redirector for the Squid Internet Object Cache. It is based on squirm package. It extends squirm functionality and introduces content filter based on Windows Active Directory groups.

BRUTALIS - BRUTeforce ALternative Is Stupid. Brutalis generate brute force passwords. It can be integrated in any command line for an attack and support resume, character panel, minimum and maximum length, special separating characters and more.

CAILogin (Counter AI Login) is an image-based user verification program for web-page logins. It's written in plain C with no special dependencies, and hence it's very suitable for embedded systems which lack "big" interpreted languages, such as PHP.

Circumference is a server-client-style implementation to supplement the WebAuth Diameter subprotocol, complete with an extensible Diameter server and base library. Diameter is a peer-to-peer authentication protocol (RFC 6733).

ns-slapd plugin to perform pass-through authentication of LDAP users to NT domain controllers (based on the ntUserDomainID attribute).

Secure local and Network based authentication using pluggable backends which provide authentication and user/groupnames, uidmappings, tokensupport and the lot.

Fingerprint Laboratory - a portable and layered package of libraries and tools for academic research and productive use that allows people to easily integrate Automatic Fingerprint Recognition technology into their software or system with little know-how.

FireWebSSO server for the FireWebSSO addon for Firefox. A Single Sign-On (SSO) server dedicated to Firefox and SeaMonkey navigators. It provides a secure remote storage for logins/passwords, bookmarks and personal notes. For apache or standalone usage.

LDAP bind SLAPI plugin for CAS authentication. Plugin has been tested and is working in a real system since march 2007. It is developed for Fedora DS, and should also work with no changes or minimal ones in RedHat DS and SUN. Openldap port is in progress

The LDAP proxy is designed to be the part of the email encryption infrastructure which would simplify finding and using public encryption keys contained in X.509 public certificates.

Login.app is an X server management and authentication application. User authentication is performed with either a username/password or via SmartCard based authentication. At startup the app launches the X server and presents an authentication panel which also recongnizes several commands (reboot, halt, exit and console). SmartCard support relies on the OpenSSH authorized_keys file method for authentication and also requires OpenSC, pcsc-lite and OpenSSL.

This is a client/server project. Server part is store information about logins in SQL database. Client part it\'s NSS-module for glibc. Client integrates into any program, which use standard getpw.../getgr...

Event Manager for OpenLDAP is an internal LDAP event handler that can execute operations to automate tasks. It can be used as base for remote automation, Identity Management, and so on.