Encrypting a number into another number?

I need a simple PL/SQL algorithm for encrypting one integer (up to 6 digits) into another 6 digit integer, so DBMS_OBFUSCATION_TOOLKIT isn't of use. I have already written something which uses simple XORing, Newvalue := InputValue XOR bitmask, but patterns still emerge for consequetive InputValues.

What I need doesn't have to be too secure, but I do need to give a more diverse range in output than simple XORing. Any ideas?

Thanks
Pomme-granite Received on Wed Aug 27 2003 - 08:25:04 CDT