encryption

[Kenneth Brody]

On 1/27/2010 1:59 PM, Richard Kreiss wrote:
[...]
> Type="AES"
> Cassie=Primary Key (lookup to a master record
> Special=nonce  (VNQ1Z99891)
> Number= card number with spaces removed
>
> En(20,*)=encrypt(number,type,cassie,special)
>
> Un(20,*)=decrypt(number,type,cassie,special)

I am assuming that you are passing the encrypted number, and not the raw 
number, to decrypt().

> Anyone have any idea why this would work 4,996 times and not on 4 records?
>
> Until I solve this problem, I can't go live with this.

Try narrowing it down, to see if a simple test fails as well.

ty = "AES"
ca = "actual_primary_key"
sp = "VNQ1Z99891"
nu = "actual_credit_card_number"
en = encrypt(nu,ty,ca,sp)
un = decrypt(en,ty,ca,sp)
mesgbox nu & "\n" & en & "\n" & un

Contact fpsupport, and send them the actual values for "number", "type", 
"cassie", and "special", so they can see if they can duplicate it.

(If the simple test fails, then send just that test.  Otherwise, you may 
need to make arrangements to send the actual file.)

-- 
Kenneth Brody