Jeremy Dunck wrote:
Anyway, it sounds like you want a secure hash, so why
not use
something like MD5 or SHA or something?
He wants administrators to be able to see the IP addresses, so a hash is
not the right tool for the job unless he wants to build his own rainbow
tables. A symmetric cipher would do fine, if he's insisting on
cryptography rather on just removing access to the IP data to regular users.
-IK