Backport of Fix transit import/export of hmac-only keys into release/1.13.x #20901
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Backport
This PR is auto-generated from #20864 to be assessed for backporting due to the inclusion of the label backport/1.13.x.
🚨
The person who merged in the original PR is:
@cipherboy
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.
The below text is copied from the body of the original PR.
Fundamentally the second commit is the important one: we need to ensure HMAC-only keys exposes the same interface as non-HMAC keys, that is, the HMAC key is in
.HMACKey
and the "real" key is in.Key
-- but in our case, HMAC should be the same value across both in case anyone is using the field directly in applications.The first is more or less a duplicate, for backwards compatibility: we won't nuke the existing HMAC keys with different-HMACKey-field-values, so we'll want to export the real one under
export/hmac-keys/...
. For anyone who inadvertently used the wrong HMAC key, they can use a plaintext backup (and/orsys/raw
) to import the separate, incorrect versions as proper versions into this key.Related: #20804
Jira: VAULT-16702
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