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Status Future consideration
Workspace z/OS
Categories ICSF
Created by Guest
Created on Jun 23, 2023

Populate SMF 82 40 CMACZERO fingerprint for more key types

Having a single key fingerprint or checksum in the SMF data leads to collisions when trying to validate that the same key is not present in multiple environments.  Having a second fingerprint in the SMF 82 40 records would help us to determine whether two keys with the same encrypt zero checksum were really the same or different.  This is necessary for compliance reasons, to validate that production and non-production environments do not share any keys.

ICSF supports calculating a CMACZERO fingerprint for most key types, and the SMF 82 40 record already supports this fingerprint, so it would be the logical choice.  The documentation says this is only populated for AES compliant tagged keys, so our request is that it be populated for all key types that support the CMACZERO fingerprint.  Having both an encrypt zero and a CMACZERO fingerprint would give us much greater confidence that our key repositories are in compliance.

Idea priority Medium
  • Guest
    Reply
    |
    Jun 23, 2023
    Valid requirement. We'll add this to the backlog.
  • Guest
    Reply
    |
    Jun 23, 2023

    I think this is a good idea. ENC-ZERO has too many opportunities for collisions by itself in a larger installation.