BubbleBabble(3)

NAME

       Digest::BubbleBabble - Create bubble-babble fingerprints

SYNOPSIS

           use Digest::BubbleBabble qw( bubblebabble );
           use Digest::SHA1 qw( sha1 );

           my $fingerprint = bubblebabble( Digest => sha1($message) );

DESCRIPTION

       Digest::BubbleBabble takes a message digest (generated by either of the
       MD5 or SHA-1 message digest algorithms) and creates a fingerprint of
       that digest in "bubble babble" format.  Bubble babble is a method of
       representing a message digest as a string of "real" words, to make the
       fingerprint easier to remember. The "words" are not necessarily real
       words, but they look more like words than a string of hex characters.

       Bubble babble fingerprinting is used by the SSH2 suite (and, conse-
       quently, by Net::SSH::Perl, the Perl SSH implementation) to display
       easy-to-remember key fingerprints.  The key (a DSA or RSA key) is con-
       verted into a textual form, digested using Digest::SHA1, and run
       through bubblebabble to create the key fingerprint.

USAGE

       Digest::BubbleBabble conditionally exports one function called bubble-
       babble; to import the function you must choose to import it, like this:

           use Digest::BubbleBabble qw( bubblebabble );

       bubblebabble( Digest => $digest )

       Currently takes only one pair of arguments, the key of which must be
       Digest, the value of which is the actual message digest $digest. You
       should generate this message digest yourself using either Digest::MD5
       of Digest::SHA1.

       Returns the bubble babble form of the digest.

AUTHOR & COPYRIGHTS

       Benjamin Trott, ben@rhumba.pair.com

       Except where otherwise noted, Digest::BubbleBabble is Copyright 2001
       Benjamin Trott. All rights reserved. Digest::BubbleBabble is free soft-
       ware; you may redistribute it and/or modify it under the same terms as
       Perl itself.

perl v5.8.6                       2001-05-02                   BubbleBabble(3)