Home > Data Protection > PowerProtect DD Series Appliances > White Papers > PowerProtect DD Series Appliances: Encryption Software > Introduction to DD Encryption with DD Replicator
DD Replicator can be used with the optional DD Encryption feature, enabling encrypted data to be replicated using collection, directory, or MTree replication.
Replication contexts are always authenticated with a shared secret. That shared secret is used to establish a session key using a Diffie-Hellman key exchange protocol. That session key is also used to encrypt and decrypt the protection system encryption key when appropriate.