# postQuantumKeyExchangeMethods A list of the quantum-secure key exchange methods the Security Association uses. ``` @property (copy) NSArray * postQuantumKeyExchangeMethods; ``` ## Discussion You can specify up to seven key-exchange methods, which correspond to the Additional Key Exchange transform types `ADDKE1`–`ADDKE7` in RFC 9370. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)