Backport of Transit BYOK export capabilities into release/1.14.x #20877
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Backport
This PR is auto-generated from #20736 to be assessed for backporting due to the inclusion of the label backport/1.14.x.
The below text is copied from the body of the original PR.
This still needs tests, but this adds the bulk of the work to support BYOK exporting of keys, now that #17934 has landed.
In particular, the combination of the two features allows an operator to securely establish key material between two separate Transit installations. This potentially allows one cluster to be used as a source cluster (encrypting a large amount of data) and a second cluster to decrypt this data later. This might be useful in hybrid or site-specific deployments of Vault for instance.
I want to make additional changes to
bump_version
before release, and wanted a way of testing export + import of keys easily, plus wanted to enable this particular use case.In the future, it might be nice to move
UnwrapKey
into the shared namespace as well, now thattink
is added as a formal dependency.TODO in this PR:
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