HOTP

HOTP

HOTP is an HMAC-based One Time Password algorithm. It is a cornerstone of Initiative For Open Authentication (OATH).

HOTP was published as an Information IETF RFC in December 2005, documenting the algorithm along with a Java implementation.

See also

* S/KEY

External links

* [http://www.ietf.org/rfc/rfc4226.txt RFC4226: HOTP: An HMAC-Based One-Time Password Algorithm]
* [http://www.openauthentication.org/ Initiative for Open Authentication]


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