Ron,

There are a couple of things you can do.

- expand the vsam or database and create a new key that will be
assigned to everyone
- use your favorite encryption method via ICSF to encrypt the card number
- centralize the method for encrypting and decrypting the data and
place controls around it

There are some products out there that you may find helpful.
- www.Voltage.com - FPE - format preserving encryption - allows you to
keep the same field size and just encrypt it
- DB2 Encryption tool
http://www-01.ibm.com/software/data/db2imstools/db2tools/ibmencrypt/
- I remember there being a couple others... but they escape me right now

IBM TechDocs with search term "crypto"

http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebAllDocs2/?Search&Query=[HTMLDocumentName=WM*]+AND+(crypto)&Start=1&Count=200&SearchOrder=4&DateSearch=1&SearchMax=10000

Basic article in Systemmag

http://ibmsystemsmag.com/mainframe/administrator/security/Cloaking-Cardholder-Data-With-PCI-Compliance/

If you are trying to make sure your system is secure for PCI...
- zSecurity Health Check - myself and a number of other providers else
can look at the ACF2/RACF/TopSecret and tell you what you are doing
right and not-so-right
- VatSecurity.com - the only way to make sure the wonderful system
integrity is really there
- zSecure - Tiovli - http://www.ibm.com/software/tivoli/products/zsecure/
- CA-Audit
- There are other auditing tools as well.

Rob Schramm
Senior Systems Consultant
Imperium Group



On Tue, Nov 15, 2011 at 4:53 AM, Ron Thomas <[email protected]> wrote:
>
> Hi Listners,
>
>
> We have go a customer number in applications and this number is currently 
> part of a primary key, we have a requirement to encrypt this number and also 
> should not be used in the tables directly , which means this can not be part 
> of a primary key. pls share your thoughts on the same as to how to take this 
> forward?
>
> Regards
> Ron
>
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