This adds a new mechanism for worker authentication that uses the
third-party arbitration of the original KMS flow by leveraging
recently-added capabilities in nodeenrollment to support a registration
wrapper. This allows for workers to be registered to the system with
just a name and a matching wrapper, while at the same time allowing
these workers to be used for private Vault access and multi-hop as they
contain per-worker encryption keys and support rotation.
Nodes using this mode will generate and rotate credentials in-memory
(using another recently added nodeenrollment capability) so will have a
new set of keys on every startup. This has the side effect of ensuring
that there is never a conflict or re-use of these credentials.
Note that the normal test worker flow was using the now-deprecated KMS
method; there is still a test that uses this (explicitly) but all other
tests using test workers that did not specify a specific PKI flow now
actually use this mechanism. This means there is fairly decent test
coverage in a general sense, plus the specific tests updated/added for
this feature.
This also adds a new KMS type that can be used to have
distinct KMSes for upstream authentication vs. accepting from
downstream.
* fix: Propagate plugin options to CreatePlugin
Plugin options were previously only applied to the
BuildPluginMap call, resulting in the plugin
execution_dir variable being ineffective.
Also add a test to verify functionality
* fix: Support plugin execution_dir for all plugins
Previously, only external host plugins would respect
the plugin execution dir. Now, all uses of the embedded
plugins respect the configuration.
* `recovery` is only used by the API (and the main module, for decryption)
* `wrapper` is only used by the CLI right now
Moving these brings them closer to the code that uses them, and makes
the SDK package a bit more clear in terms of functionality.
Jeff Mitchell
Johan Brandhorst-Satzkorn