1BubbleBabble(3)       User Contributed Perl Documentation      BubbleBabble(3)
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NAME

6       Digest::BubbleBabble - Create bubble-babble fingerprints
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SYNOPSIS

9           use Digest::BubbleBabble qw( bubblebabble );
10           use Digest::SHA1 qw( sha1 );
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12           my $fingerprint = bubblebabble( Digest => sha1($message) );
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DESCRIPTION

15       Digest::BubbleBabble takes a message digest (generated by either of the
16       MD5 or SHA-1 message digest algorithms) and creates a fingerprint of
17       that digest in "bubble babble" format.  Bubble babble is a method of
18       representing a message digest as a string of "real" words, to make the
19       fingerprint easier to remember. The "words" are not necessarily real
20       words, but they look more like words than a string of hex characters.
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22       Bubble babble fingerprinting is used by the SSH2 suite (and, conse‐
23       quently, by Net::SSH::Perl, the Perl SSH implementation) to display
24       easy-to-remember key fingerprints.  The key (a DSA or RSA key) is con‐
25       verted into a textual form, digested using Digest::SHA1, and run
26       through bubblebabble to create the key fingerprint.
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USAGE

29       Digest::BubbleBabble conditionally exports one function called bubble‐
30       babble; to import the function you must choose to import it, like this:
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32           use Digest::BubbleBabble qw( bubblebabble );
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34       bubblebabble( Digest => $digest )
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36       Currently takes only one pair of arguments, the key of which must be
37       Digest, the value of which is the actual message digest $digest. You
38       should generate this message digest yourself using either Digest::MD5
39       of Digest::SHA1.
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41       Returns the bubble babble form of the digest.
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AUTHOR & COPYRIGHTS

44       Benjamin Trott, ben@rhumba.pair.com
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46       Except where otherwise noted, Digest::BubbleBabble is Copyright 2001
47       Benjamin Trott. All rights reserved. Digest::BubbleBabble is free soft‐
48       ware; you may redistribute it and/or modify it under the same terms as
49       Perl itself.
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53perl v5.8.8                       2001-05-02                   BubbleBabble(3)
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