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Digest::HMAC(3) User Contributed Perl Documentation Digest::HMAC(3)
Digest::HMAC - Keyed-Hashing for Message Authentication
# Functional style
use Digest::HMAC qw(hmac hmac_hex);
$digest = hmac($data, $key, \&myhash);
print hmac_hex($data, $key, \&myhash);
# OO style
$hmac = Digest::HMAC->new($key, "Digest::MyHash");
$digest = $hmac->digest;
$digest = $hmac->hexdigest;
$digest = $hmac->b64digest;
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.
Graham Barr <email@example.com>, Gisle Aas <firstname.lastname@example.org>
perl v5.8.0 2001-03-14 Digest::HMAC(3)
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