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One-Time Password

<security> (OTP) A security system that requires a new password every time a user authenticates themselves, thus protecting against an intruder replaying an intercepted password.

OTP generates passwords using either the MD4 or MD5 hashing algorithms.

The equivalent term "S/Key", developed by Bellcore, is a trademark of Telcordia Technologies, so the name OTP is used increasingly.

See RFC 1760 - "The S/KEY One-Time Password System" and RFC 1938 - "A One-Time Password System".

(http://www.cs.umd.edu/~harry/jotp/).

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Ondine one-banana problem one-line fix one-liner wars ones complement	One-Time Password OTP RFC 1760 RFC 1938 RFC 2298	One Time Programmable Read-Only Memory one-way function one-way hash function on-line On-Line Analytical Processing