Products J2ObjC Reference javax.crypto.interfaces Interfaces DHKey The interface to a Diffie-Hellman key. DHPublicKey The interface to a Diffie-Hellman public key. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated May 4, 2017.