An excellent presentation indeed! Highly recommended! <g> I do recommend the audio/video rather than just browsing the slides. I tend to use slides as illustrations and for emphasis, not as the entire content.
https://www.newera.com/INFO/Certificates_2021.mp4 I don't spend a whole lot of time on digital hashes but I do cover. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Paul Gilmartin Sent: Friday, August 13, 2021 1:11 PM To: [email protected] Subject: Re: ICSF Hash with a certain seed (Key) On Fri, 13 Aug 2021 16:16:37 -0300, Isabel wrote: > >Our scenario: >We are running z/OS 2.2, Crypto Express 5 and FMID=HCR77B0 > >We want to calculate a hash using sha-256 with a certain secret key (or >seed) that is provided by someone external (and given to us). We are not >sure how to store that key in the CKDS Dataset. The length of the key is 32 >bits and has the form of n(1)n(2)....n(32) where each n(i) is an >hexadecimal character (I don't know why...) > Are you trying to generate a digital signature? Or transmit a message securely? It's a well-traveled winding trail: https://www.newera.com/INFO/Digital_Certificates_6-30-21.pdf There's also a video. I don't find a URL readily. Is "someone external" reinventing the wheel? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
