digest::md2(3pm) [debian man page]

MD2(3pm)						User Contributed Perl Documentation						  MD2(3pm)

NAME

       Digest::MD2 - Perl interface to the MD2 Algorithm

SYNOPSIS

	# Functional style
	use Digest::MD2  qw(md2 md2_hex md2_base64);

	$digest = md2($data);
	$digest = md2_hex($data);
	$digest = md2_base64($data);

	# OO style
	use Digest::MD2;

	$ctx = Digest::MD2->new;

	$ctx->add($data);
	$ctx->addfile(*FILE);

	$digest = $ctx->digest;
	$digest = $ctx->hexdigest;
	$digest = $ctx->b64digest;

DESCRIPTION

       The "Digest::MD2" module allows you to use the RSA Data Security Inc. MD2 Message Digest algorithm from within Perl programs.  The
       algorithm takes as input a message of arbitrary length and produces as output a 128-bit "fingerprint" or "message digest" of the input.

       The "Digest::MD2" programming interface is identical to the interface of "Digest::MD5".

SEE ALSO

       Digest::MD5

COPYRIGHT

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

	Copyright 1998-2003 Gisle Aas.
	Copyright 1990-1992 RSA Data Security, Inc.

AUTHOR

       Gisle Aas <gisle@aas.no>

perl v5.14.2							    2003-10-06								  MD2(3pm)

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

NAME

       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 <gbarr@ti.com>, Gisle Aas <gisle@aas.no>

perl v5.12.4							    2011-07-25							 Digest::HMAC(3pm)