S/Key ⇝

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://cs.umd.edu/~harry/jotp/.

Last updated: 2000-01-31

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Nearby terms:

one-line fix « one-liner wars « ones complement « One-Time Password » One Time Programmable Read-Only Memory » one-way function » one-way hash function

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