| Clearview Systems: Suppliers of Secure Computing SafeWord, a scheme based on hardware tokens. Includes rationale for single-use password systems, as well as other network security products. |
| CRYPTOCard Network Security: Password tokens delivered on key fobs, palm pilots, hardware or software. Security for dial in, access control, internet and web connections. Offers a strong two factor system. Management software. Includes rationale and business case for token-based access. |
| DynaPass: Provides primary or secondary authentication by regularly distributing passwords (or parts of passwords) through wireless phones. Time locked access. |
| IETF One Time Password Authentication Charter: Current specifications for the official internet standard (a continuation of the BellCore S/Key standard). Composition and membership information included. |
| JOTP Calculator: A java applet OTP (S/Key) calculator. The applet downloads onto the client machine and calculates locally. |
| OTPC 9000: An OTP (S/Key) calculator for Nokia 9000 cellular phones. Includes S/Key information and resources. |
| otpCalc - An OTP and S/Key calculator for X: otpCalc is an RFC2289 and RFC1760 compliant one time password calculator, written to use the GTK+ library for screen I/O. |
| PalmKey: OTP (S/Key) calculator for palm pilots. Site includes information about both source and binary distributions. |
| pilOTP: OTP (S/Key) client for the Palm platform. Includes screen captures, and general information as well as software downloads. |
| PyOTP: A simple Python library, currently under development, to generate OTP (S/Key) responses. RFC-2289 compliant. Includes links to development and release information. |
| RFC2289 - A One-Time Password System: The current internet standard, as descended from the original S/Key specification. |
| S/Key Introduction: A technical description of the S/Key algorithm. |
| 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. |
| 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. |
Classical
