One Time Passwords Resources from Security Directory

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.

David Baldwin - Author of an Apple Newton OTP (S/Key) calculator. Site includes information about the author and a link to his FTP site.

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.