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• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  6.8.3 ECC and RSA-DH Encrypted Secret
  encryption. Clause 6.8.1 defines a mechanism that allows the sender to acquire the receiver EphemeralKey when using a Session . Using the EccEncryptedSecret in other contexts requires a different mechanism. Once ... sender has the receiver EphemeralKey, it creates its own EphemeralKey . For ECC algorithms, The ECC curve and key length for the EphemeralKey s are specified by the SecurityPolicy