I tried sending a doc to you to your GMAIL but it got rejected đŸ™‚ It's available at:
https://www.ibm.com/support/pages/synopsis-z-systems-crypto-hardware Might be of some help Regards Parwez Hamid​ ________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Steve Estle <[email protected]> Sent: 03 October 2025 13:25 To: [email protected] <[email protected]> Subject: ZSeries Crypto Cards - Decision Table? All, Am working with financial institution that needs to encrypt traffic across network pipe using at least AES256 or higher encryption protocol with TLS 1.2 or higher that will lead to an eventual proof of concept involving new Z replication software that will propagate / replicate change logs for CICS and DB2. They do not currently have crypto accelerator cards installed in Z processor(s). They are running ZOS 3.1. What I am looking for is a clear decision tree / matrix to determine if crypto cards are required or not - I understand they can reduce CPU overhead but beyond optimized encryption / decryption what are the gating factors that drive the need for crypto hardware cards (I know they are needed for pervasive encryption for data at rest), but less clear on when they are absolutely required for network encryption related purposes. All input / reference materials (Redbooks, Share, etc.) are appreciated. Thanks, ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
