This read-only object holds the copy of a specific Radio Slave's RSA public key that the Radio Master has retained, encoded per the PKCS #1 SubjectPublicKeyInfo standard, and it returns a zero-length string if the master isn't currently holding that slave's key at all. It lets an admin verify from the master's side that it has successfully learned and stored a given slave's public key during authorization. For example, a zero-length cwrBpiRmAuthRsPublicKey for a slave that should be authorized would indicate the master never actually captured that radio's public key, explaining an authorization failure.