Jon Perryman wrote, in part: >I could see someone else using A(DXD + DXD) as a random encryption / >decryption key that changes at IPL.
Ick. That's not even close to secure. Assuming it's below the bar, that's a max of 2**32 keys, not even DES strength. And that's assuming you can't further cut it by saying it's gonna be fullword or doubleword aligned...
