Digest::BubbleBabble3pm

Usage

    # Create a fingerprint of a simple string.
    use Digest::BubbleBabble qw( bubblebabble );
    my $fingerprint = bubblebabble( Digest => "Pineapple" );
    # Create a fingerprint of a SHA-1 hash.
    use Digest::SHA1 qw( sha1 );
    $fingerprint = bubblebabble( Digest => sha1("hello") );

Overview

Digest::BubbleBabble takes a message digest (often 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 );

Author & copyrights

Benjamin Trott, [email protected]

Except where otherwise noted, Digest::BubbleBabble is Copyright 2001 Benjamin Trott. All rights reserved.