Number::Encode - Encode bit strings into digit strings
use Number::Encode qw(nonuniform uniform);
Provides a mechanism to convert arbitrary bit-strings into numeric digit strings. The transformation can be uniform or non-uniform depending on the type of distribution of the numeric digits achieved.
The former approach is useful for security-related applications such as calling cards and the such, which require a uniform digit distribution. The algorythm used to generate uniform distributions, while deterministic, is more constly than the non-uniform variant.
This module is distributed under the same terms and warranty as Perl itself.
This module provides the following exports:
my $number = nonuniform($data)
Converts a bit-string represented in the example by the scalar
$datato a numeric string representation returned at
The probabilistic distribution of the digits in the resulting number is not uniform. Some digits will have up to twice the chance of others of appearing at a given position.
my $number = uniform($data)
Performs a transformation from the bit-string provided in
$datato a numeric string returned at
$number. This transformation is a bit more costly but has the advantage that the digit distribution is uniform. This function is adequate for applications that require a uniform composition of the numeric strings, such as password or PIN number generators.
Luis E. Munoz <firstname.lastname@example.org>