!!! Overview
[{$pagename}] ([RFC 2289]) describes a [One-Time password] [authentication] system ([[OTP]). 

The system provides authentication for system access (login) and other applications requiring authentication that is secure against passive attacks based on replaying captured reusable passwords. 

[{$pagename}] evolved from the [S-KEY One-Time Password System] that was released by Bellcore.

!! More Information
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