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Message Posted: Mon, 25 Apr 2005 @ 20:53:11 GMT

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Subj:   Masking identification numbers
From:   Anomy Anom

<-- Anonymously Posted: Monday, April 25, 2005 15:10 -->

We have some users on our system who need to know the "type" of credit card and information about transactions by a particular credit card using a "surrogate" card number, without knowing the actual card number.

We desire to mask credit card numbers residing in a transaction history table where:

(1) new numbers are continually added i.e. the list of numbers is not static;

(2) the number is not the primary index of a table;

(3) the same ID number needs to translate to the same "surrogate" value every time; and

(4) we do not maintain a separate table of unique card numbers.

Can anyone offer useful info on what may be the best approach on Teradata?



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