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Status Under review
Workspace IBM Z and LinuxONE Systems Hardware
Created by Guest
Created on Jan 22, 2026

RELATED IDEAS

Create HMAC Keys with 64 Byte with TKE and store it at smart cards

We need to provide HMAC keys with a length of 64 bytes (HMAC512), and we need to manage these keys with smart cards. Currently, the only way I know to generate such keys without manually entering the key is UKO. Otherwise, there is no way to generate such a key. We would be glad to have this capability with our TKEs.

Idea priority High
  • Guest
    Jul 9, 2026

    That's correct; this is currently not possible. Please provide the capability to create the same strong keys using a TKE workstation. Not everyone has access to a UKO, but many users have TKEs. Therefore, clients using TKEs should be able to create and use the same strong keys as clients with a UKO.

    This is especially important for us because we have very strict compliance requirements. Therefore, we were not allowed to connect one UKO to every sysplex. However, we needed an HMAC512 key for our RACF team that is identical across all of our sysplexes. Generating a clear key with ICSF is not an option, so the only way to achieve this is by using the TKE.

    Nevertheless, the TKE should be able to generate and provide the same keys as any other key management tool.

    Reply
  • Guest
    Mar 13, 2026
    The TKE loads operational keys into registers on the HSM. The maximum length of the register is 32. TKE can't load a 64 byte key.
    Reply

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