When critical security parameters are sent over network interfaces that can be reached remotely, the device keeps them confidential, using an encrypted channel or encrypting the payload with strength no lower than that of the key material, or other mitigations; values used in challenge-response exchanges should still be protected. Status in Table B.1: M F (o) (mandatory, a shall provision; applies only where critical security parameters can leave the device).
This control maps to 2 controls across 2 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 2 it maps to, and the evidence behind each claim, over MCP and REST.