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digest::base(3pm) [osx man page]

Digest::base(3pm)					 Perl Programmers Reference Guide					 Digest::base(3pm)

Digest::base - Digest base class SYNOPSIS
package Digest::Foo; use base 'Digest::base'; DESCRIPTION
The "Digest::base" class provide implementations of the methods "addfile" and "add_bits" in terms of "add", and of the methods "hexdigest" and "b64digest" in terms of "digest". Digest implementations might want to inherit from this class to get this implementations of the alternative add and digest methods. A minimal subclass needs to implement the following methods by itself: new clone add digest The arguments and expected behaviour of these methods are described in Digest. SEE ALSO
Digest perl v5.16.2 2012-08-26 Digest::base(3pm)

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Digest::HMAC(3) 					User Contributed Perl Documentation					   Digest::HMAC(3)

Digest::HMAC - Keyed-Hashing for Message Authentication SYNOPSIS
# Functional style use Digest::HMAC qw(hmac hmac_hex); $digest = hmac($data, $key, &myhash); print hmac_hex($data, $key, &myhash); # OO style use Digest::HMAC; $hmac = Digest::HMAC->new($key, "Digest::MyHash"); $hmac->add($data); $hmac->addfile(*FILE); $digest = $hmac->digest; $digest = $hmac->hexdigest; $digest = $hmac->b64digest; DESCRIPTION
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. The hmac() and hmac_hex() functions and the Digest::HMAC->new() constructor takes an optional $blocksize argument as well. The HMAC algorithm assumes the digester to hash by iterating a basic compression function on blocks of data and the $blocksize should match the byte-length of such blocks. The default $blocksize is 64 which is suitable for the MD5 and SHA-1 digest functions. For stronger algorithms the blocksize probably needs to be increased. SEE ALSO
Digest::HMAC_MD5, Digest::HMAC_SHA1 RFC 2104 AUTHORS
Graham Barr <>, Gisle Aas <> perl v5.16.2 2011-07-25 Digest::HMAC(3)
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