Optional
extra_ExtraShares represents the minimum number of shares that can be lost to render the secret unrecoverable.
Optional
handoff_HandoffInterval is the time interval in epochs between handoffs.
Zero value disables handoffs.
ID is a unique CHURP identifier within the key manager runtime.
Optional
policyPolicy is a signed SGX access control policy.
RuntimeID is the identifier of the key manager runtime.
UpdateRequest contains the updated configuration.