szlta commented on code in PR #17155:
URL: https://github.com/apache/iceberg/pull/17155#discussion_r3672522059


##########
open-api/rest-catalog-open-api.yaml:
##########
@@ -3665,6 +3676,43 @@ components:
           additionalProperties:
             type: string
 
+    KeyManagementCredential:
+      type: object
+      description: |
+        Provider-specific credential config for accessing one or more KMS keys 
required by an encrypted
+        table operation.
+
+        The key-management provider is advertised in catalog configuration, 
such as `encryption.kms-type`
+        returned from `/v1/config`. The `config` map contains 
provider-specific properties for the
+        selected key-management provider.
+
+        Catalogs that return `key-management-credentials` for an operation 
must include credentials for all
+        KMS key IDs required by table encryption metadata. Clients should 
select the credential config by

Review Comment:
   I see your point, but this is not how Iceberg table encryption currently 
works. The "old" keys you are referring to (aka those that encrypt snapshot 
files) are internal to a table and not part of the KMS managed keyset. 
Therefore those will never be part of the `key-management-credentials`.
   
   Right now there's only one key per table in KMS which acts as the topmost 
level KEK. The reason I'm referring to KMS keyS (so plural) is to allow future 
column-level encryption in this spec.



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