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Old 06-05-2008
mcl-algorithm 08-157 (Default branch)
The MCL (Markov Cluster Algorithm) is a fast andscalable cluster algorithm for graphs based onstochastic flow. The flow process employed by thealgorithm is mathematically sound andintrinsically tied to cluster structure in graphs,which is revealed as the imprint left by theprocess. The threaded implementation has handledgraphs of up to one million nodes within hours,and is widely used in the field of protein familyanalysis. It comes with a wide range of siblingutilities for handling and analyzing graphs,matrices, and clusterings.License: GNU General Public License (GPL)Changes:
The mcl suite is moving towards a wider focus ongeneral purpose large scale graph analysis, withthe emphasis, besides clustering, on basic graphand clustering measures and transformations. Theprogram mcxarray can now transform tabular geneexpression data into graph input. The clm utilitycomputes clustering coefficients, diameter andeccentricity, and betweenness centrality. Manyfixes and improvements were made throughout.Image

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LEARN ABOUT SUSE

mail::dkim::algorithm::base

Mail::DKIM::Algorithm::Base(3)				User Contributed Perl Documentation			    Mail::DKIM::Algorithm::Base(3)

NAME

       Mail::DKIM::Algorithm::Base - base class for DKIM "algorithms"

SYNOPSIS

	 my $algorithm = new Mail::DKIM::Algorithm::rsa_sha1(
			     Signature => $dkim_signature
			 );

	 # add headers
	 $algorithm->add_header("Subject: this is the subject1512");
	 $algorithm->finish_header;

	 # add body
	 $algorithm->add_body("This is the body.1512");
	 $algorithm->add_body("Another line of the body.1512");
	 $algorithm->finish_body;

	 # now sign or verify...
	 # TODO...

CONSTRUCTOR

       You should not create an object of this class directly. Instead, use one of the DKIM algorithm implementation classes, such as rsa_sha1:

	 my $algorithm = new Mail::DKIM::Algorithm::rsa_sha1(
			     Signature => $dkim_signature
			 );

METHODS

   add_body() - feeds part of the body into the algorithm/canonicalization
	 $algorithm->add_body("This is the body.1512");
	 $algorithm->add_body("Another line of the body.1512");

       The body should be fed one "line" at a time.

   add_header() - feeds a header field into the algorithm/canonicalization
	 $algorithm->add_header("Subject: this is the subject1512");

       The header must start with the header field name and continue through any folded lines (including the embedded <CRLF> sequences). It
       terminates with the <CRLF> at the end of the header field.

   finish_body() - signals the end of the message body
	 $algorithm->finish_body

       Call this method when all lines from the body have been submitted.  After calling this method, use sign() or verify() to get the results
       from the algorithm.

   finish_header() - signals the end of the header field block
	 $algorithm->finish_header;

       Call this method when all the headers have been submitted.

   sign() - generates a signature using a private key
	 $base64 = $algorithm->sign($private_key);

   signature() - get/set the signature worked on by this algorithm
	 my $old_signature = $algorithm->signature;
	 $algorithm->signature($new_signature);

   verify() - verifies a signature
	 $result = $algorithm->verify();

       Must be called after finish_body().

       The result is a true/false value: true indicates the signature data is valid, false indicates it is invalid.

       For an invalid signature, details may be obtained from $algorithm->{verification_details} or $@.

SEE ALSO

       Mail::DKIM

AUTHOR

       Jason Long, <jlong@messiah.edu>

COPYRIGHT AND LICENSE

       Copyright (C) 2005-2007 by Messiah College

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.6 or,
       at your option, any later version of Perl 5 you may have available.

perl v5.12.1							    2010-02-24					    Mail::DKIM::Algorithm::Base(3)