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Meaning of ONE-TIME PASSWORD

 
Computing Dictionary
 
 Definition: 

(OTP) A security system that requires a new password every time a user authenticates themselves. OTP generates these passwords using either the md4 or md5 hashing algorithms.

The equivalent term "S/Key" 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".

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