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lib/Convert/Ascii85.pm  view on Meta::CPAN

=head1 NAME

Convert::Ascii85 - Encoding and decoding of ascii85/base85 strings

=head1 SYNOPSIS

 use Convert::Ascii85;
 
 my $encoded = Convert::Ascii85::encode($data);
 my $decoded = Convert::Ascii85::decode($encoded);

 use Convert::Ascii85 qw(ascii85_encode ascii85_decode);
 
 my $encoded = ascii85_encode($data);
 my $decoded = ascii85_decode($encoded);

=head1 DESCRIPTION

This module implements the I<Ascii85> (also known as I<Base85>) algorithm for
encoding binary data as text. This is done by interpreting each group of four
bytes as a 32-bit integer, which is then converted to a five-digit base-85
representation using the digits from ASCII 33 (C<!>) to 117 (C<u>).

This is similar to L<MIME::Base64> but more space efficient: The overhead is
only 1/4 of the original data (as opposed to 1/3 for Base64).