| XtRadius Freeware server allowing external processes to determine access (as from a database or other source). FAQ and mailing list information as well as downloads. [Win32] | |
| WinRadius Standard RADIUS server for network authentication and accounting. | |
| Vircom Makers of VOP Radius server. Site includes key benefits and customer comments. | |
| Vasco Makers of both software and hardware systems. Demos, case studies and product information. | |
| Unisys Makers of several related products. Site includes rationale as well as comprehensive usage information. | |
| Theory of Identification and Authentication History and development of mechanisms and techniques. | |
| The S/KEY One-Time Password System Scholarly paper by Neil Haller on the original S/Key system. Links to many citations from the original paper. | |
| The FreeRADIUS Server Project Open-source successor to Cistron. Site includes release information, and an invitation to new developers. | |
| SkeyCalc OTP (S/Key) calculator for MacOS X, MacOS X Server and NEXTSTEP. RFC-2289 compliant. Site includes software downloads, documentation and an introduction to the technology. | |
| Single Sign-On Deployment Guide A guide to deploying from Netscape, of interest to users of other technologies as well. | |
| SESAME SESAME (Secure European System for Applications in a Multi-vendor Environment) is a distributed authentication and access control system. Site includes detailed information on this research and development project. | |
| SecureUser.net Providers of tools to e-commerce developers. Site includes a technology explanation and case studies. | |
| Secure Remote Passwords Software integrates into existing networked applications. Secure telnet and FTP available. Open source. User and technical documentation as well as source code. | |
| SAFLINK Offer a range of identity management solutions based on tokens, smartcards and biometrics. Headquarters in Bellevue, WA. | |
| SafeStone Technologies Producers of AxcessIT password synchronization technology. Controls system login, extranet and VPN access and web connections. | |
| S/Key Introduction A technical description of the S/Key algorithm. | |
| RSA Security Products include token-based one time password systems and single sign on systems. Site contains information on security. | |
| RFC2289 - A One-Time Password System The current internet standard, as descended from the original S/Key specification. | |
| RFC 1510 An overview and specification of the official internet protocol. | |
| Remote User Authentication in Libraries Comprehensive collection of resources for libraries and universities. Includes links to software and some links of interest to non-librarians. | |
