NAME

       Template::Plugin::Digest::MD5 - TT2 interface to the MD5 Algorithm

SYNOPSIS

         [% USE Digest.MD5 -%]
         [% checksum = content FILTER md5 -%]
         [% checksum = content FILTER md5_hex -%]
         [% checksum = content FILTER md5_base64 -%]
         [% checksum = content.md5 -%]
         [% checksum = content.md5_hex -%]
         [% checksum = content.md5_base64 -%]

DESCRIPTION

       The Digest.MD5 Template Toolkit plugin provides access to the MD5 algorithm via the
       "Digest::MD5" module.  It is used like a plugin but installs filters and vmethods into the
       current context.

       When you invoke

           [% USE Digest.MD5 %]

       the following filters (and vmethods of the same name) are installed into the current
       context:

       "md5"
           Calculate the MD5 digest of the input, and return it in binary form.  The returned
           string will be 16 bytes long.

       "md5_hex"
           Same as "md5", but will return the digest in hexadecimal form. The length of the
           returned string will be 32 and it will only contain characters from this set: '0'..'9'
           and 'a'..'f'.

       "md5_base64"
           Same as "md5", but will return the digest as a base64 encoded string.  The length of
           the returned string will be 22 and it will only contain characters from this set:
           'A'..'Z', 'a'..'z', '0'..'9', '+' and '/'.

           Note that the base64 encoded string returned is not padded to be a multiple of 4 bytes
           long.  If you want interoperability with other base64 encoded md5 digests you might
           want to append the redundant string "==" to the result.

       As the filters are also available as vmethods the following are all equivalent:

           FILTER md5_hex; content; END;
           content FILTER md5_hex;
           content.md5_base64;

WARNING

       The Digest::MD5 man page notes that the MD5 algorithm is not as strong as it used to be.
       It has since 2005 been easy to generate different messages that produce the same MD5
       digest.  It still seems hard to generate messages that produce a given digest, but it is
       probably wise to move to stronger algorithms for applications that depend on the digest to
       uniquely identify a message.

SEE ALSO

       Digest::MD5, Template

DEDICATION

       This distribution was originally created by Andrew Ford. Sadly in early 2014, Andrew was
       diagnosed with Pancreatic Cancer and passed away peacfully at home on 25th April 2014.

       One of his wishes was for his OpenSource work to continue. At his funeral, many of his
       colleagues and friends, spoke of how he felt like a person of the world, and how he
       embrace the idea of OpenSource being for the benefit of the world.

       Anyone wishing to donate in memory of Andrew, please consider the following charities:

       Dignity in Dying - <http://www.dignityindying.org.uk/>
       Marie Curie Cancer Care - <http://www.mariecurie.org.uk/>

AUTHOR

         Original Author:    Andrew Ford               2006-2014
         Current Maintainer: Barbie <barbie@cpan.org>  2014

ACKNOWLEDGEMENTS

       Thanks to Darren Chamberlain for a patch for vmethod support.

COPYRIGHT & LICENSE

       Copyright (C) 2006-2014 Andrew Ford Copyright (C) 2014      Barbie for Miss Barbell
       Productions.

       This distribution is free software; you can redistribute it and/or modify it under the
       Artistic Licence v2.