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Algorithm::LUHN 1.00

  Date Added: March 20, 2010  |  Visits: 2.179

Algorithm::LUHN

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Algorithm::LUHN is a Perl module to calculate the modulus 10 double add double checksum. SYNOPSIS use Algorithm::LUHN qw/check_digit is_valid/; $c = check_digit("43881234567"); print "It worksn" if is_valid("43881234567$c"); $c = check_digit("A2C4E6G8"); # this will cause an error print "Valid LUHN characters are:n"; my %vc = Algorithm::LUHN::valid_chars(); for (sort keys %vc) { print "$_ => $vc{$_}n"; } Algorithm::LUHN::valid_chars(map {$_ => ord($_)-ord(A)+10} A..Z); $c = check_digit("A2C4E6G8"); print "It worked againn" if is_valid("A2C4E6G8$c"); 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 & Poors security identifiers such as CUSIPs and CSINs. You can find plenty of information about the algorithm by searching the web for "modulus 10 double add double"..

Requirements: No special requirements
Platforms: Linux
Keyword: Algorithmluhn Double Libraries Luhn Module Modulus Perl Module Print Programming
Users rating: 0/10

License: Freeware Size: 4.1 KB
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