1Algorithm::CheckDigits:U:sMe1r1_C0o1n2t(r3i)buted Perl DAolcguomreintthamt:i:oCnheckDigits::M11_012(3)
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3
4

NAME

6       CheckDigits::M11_012 - compute check digits for
7       Bundeswehrpersonenkennnummer (DE)
8

SYNOPSIS

10         use Algorithm::CheckDigits;
11
12         $bwpk = CheckDigits('bwpk_de');
13
14         if ($bwpk->is_valid('151058-D-20711')) {
15               # do something
16         }
17
18         $cn = $bwpk->complete('151058-D-2071');
19         # $cn = '151058-D-20711'
20
21         $cd = $bwpk->checkdigit('151058-D-20711');
22         # $cd = '1'
23
24         $bn = $bwpk->basenumber('151058-D-20711');
25         # $bn = '151058-D-2071';
26

DESCRIPTION

28   ALGORITHM
29       1.  Beginning left all digits are weighted 2,3,4,5,6,7,1,6,7,2,3.
30           Letters are replaced according to the following table:
31
32             my %table_to = (
33                   A => 12, B => 14, C => 16, D => 18, E => 20,
34                   F => 22, G => 24, H => 26, I => 28, J => 6,
35                   K => 8, L => 10, M => 12, N => 14, O => 16,
36                   P => 18, Q => 20, R => 22, S => 4, T => 6,
37                   U => 8, V => 10, W => 12, X => 14, Y => 16,
38                   Z => 18,
39             );
40
41       2.  The weighted digits are added.
42
43       3.  The sum from step 2 is taken modulo 11.
44
45       4.  The checksum is 11 minus the sum from step 3.
46
47           If the difference is 10, the checkdigit is 0.
48
49           If the difference is 11, the checkdigit is 1.
50
51   METHODS
52       is_valid($number)
53           Returns true only if $number consists solely of numbers, letters
54           and hyphens and the rightmost digit is a valid check digit
55           according to the algorithm given above.
56
57           Returns false otherwise,
58
59       complete($number)
60           The check digit for $number is computed and appended to the end of
61           $number.
62
63           Returns the complete number with check digit or '' if $number does
64           not consist solely of digits, hyphens and spaces.
65
66       basenumber($number)
67           Returns the basenumber of $number if $number has a valid check
68           digit.
69
70           Return '' otherwise.
71
72       checkdigit($number)
73           Returns the check digits of $number if $number has valid check
74           digits.
75
76           Return '' otherwise.
77
78   EXPORT
79       None by default.
80

AUTHOR

82       Mathias Weidner, "<mamawe@cpan.org>"
83

SEE ALSO

85       perl, CheckDigits, www.pruefziffernberechnung.de,
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89perl v5.30.1                      2020-01-29Algorithm::CheckDigits::M11_012(3)
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