It's a nit in the big picture of this thing, but 2**31 maximum, right? The low-order bit would always be zero, no?
Charles -----Original Message----- From: IBM Mainframe Assembler List <ASSEMBLER-LIST@LISTSERV.UGA.EDU> On Behalf Of Phil Smith III Sent: Wednesday, September 3, 2025 2:16 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: Question about HLASM complex relocatable expressions 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...