perl-Digest-HMAC -- Digest-HMAC Perl module<hr>
<a href="http://search.cpan.org/search?mode=module&query=Digest%3a%3aHMAC">http://search.cpan.org/search?mode=module&query=Digest%3a%3aHMAC</a><hr>
HMAC is used for message integrity checks between two parties that share
a secret key, and works in combination with some other Digest algorithm,
usually MD5 or SHA-1. The HMAC mechanism is described in RFC 2104.

HMAC follow the common Digest:: interface, but the constructor takes
the secret key and the name of some other simple Digest:: as argument.
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