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Benjamin Trott > Digest-BubbleBabble-0.01 > Digest::BubbleBabble

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Module Version: 0.01   Source  

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, consequently, by Net::SSH::Perl, the Perl SSH implementation) to display easy-to-remember key fingerprints. The key (a DSA or RSA key) is converted 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 bubblebabble; 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 software; you may redistribute it and/or modify it under the same terms as Perl itself.

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