This is an RFC-2289 OTP ("One Time Password") Generator.
This application generates one-time passwords in accordance with the Internet standard document "RFC2289 One-Time Password System".
It is a system administrators tool to facilitate logging into Unix and Linux servers secured by Challenge-Response OTP systems such as OPIE ("One Time Password Is Everything") and S/KEY(TM).
The RFC2289 OTP standard obsoletes the older RFC1938 OTP standard, and it also supersedes the S/KEY(TM) protocol described in RFC1760.
This OTP password generator tool supports the MD4 (RFC1320) and MD5 (RFC1321) message-digest algorithms developed by RSA Data Security, as well as NISTs Secure Hash Algorithm SHA1 (RFC3174).
S/KEY is a trademark of Telcordia Technologies.