freebsd-ports/devel/p5-Algorithm-LUHN/pkg-descr
Doug Barton 2fadfa2cfb For ports maintained by ports@FreeBSD.org, remove names and/or
e-mail addresses from the pkg-descr file that could reasonably
be mistaken for maintainer contact information in order to avoid
confusion on the part of users looking for support. As a pleasant
side effect this also avoids confusion and/or frustration for people
who are no longer maintaining those ports.
2009-12-21 02:19:12 +00:00

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This module calculates the Modulus 10 Double Add Double checksum, also known
as the LUHN Formula. This algorithm is used to verify credit card numbers and
Standard & Poor's security identifiers such as CUSIP and CSIN.
You can find plenty of information about the algorithm by searching the web
for "modulus 10 double add double".
WWW: http://search.cpan.org/dist/Algorithm-LUHN/