Computing (FOLDOC) dictionary
Keyed-Hashing Message Authentication
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messaging, cryptography (HMAC) A mechanism for message
can be used with any iterative cryptographic hash function,
e.g.,
MD5,
SHA-1, in combination with a secret shared key.
The cryptographic strength of HMAC depends on the properties
of the underlying hash function.
[RFC 2104].
(1997-05-10)