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8 lines
335 B
Plaintext
8 lines
335 B
Plaintext
This module calculates the Modulus 10 Double Add Double checksum,
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also known as the LUHN Formula. This algorithm is used to verify
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credit card numbers and Standard & Poor's security identifiers such
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as CUSIP's and CSIN's.
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You can find plenty of information about the algorithm by searching
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the web for "modulus 10 double add double".
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