Probably more likely to do inadvertent "storage" damage with Key 0 ("oops, I
forgot that subroutine destroys R2") than to do inadvertent "you shouldn't
use that op code" damage with supervisor state.I think inadvertent "oops's" are the issue here. If you are malicious, then if you have APF authorization all bets are off. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Binyamin Dissen Sent: Monday, July 13, 2015 2:43 PM To: [email protected] Subject: Re: SYSTEM KEY Programming Was: IVSK and SPKA On Mon, 13 Jul 2015 16:51:33 -0400 "Shmuel Metz (Seymour J.)" <[email protected]> wrote: :>Au contraire, it is unwise to run i Supervisor when you don't need it. :>Honor the Principle of Least Privilege and keep it holy. Actually, it is quite inefficient to keep switching in and out of supervisor state. Supervisor state alone does not give you much more ability for mischief than APF.alone. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
