Retrieves the public key of an asymmetric CMK.
This method retrieves the public key of the asymmetric CMK specified by KeyId. The public key and its related information will be downloaded to the following KeyData* properties, refer to their documentation for more information:
This method will fail if any of the following are true regarding the specified CMK:
- Its State is anything other than aksEnabled (0).
- It is symmetric (see KeySpec).
- It is an AWS-managed CMK (see AWSManaged).