RFR: 8314323: Implement JEP 527: TLS 1.3 Hybrid Key Exchange [v20]

Tue Dec 9 06:22:27 UTC 2025

> Implement hybrid key exchange support for TLS 1.3 by adding three post-quantum hybrid named groups: X25519MLKEM768, SecP256r1MLKEM768, and SecP384r1MLKEM1024.
> Please see [JEP 527](https://openjdk.org/jeps/527) for details about this change.

Hai-May Chao has updated the pull request incrementally with one additional commit since the last revision:

  Updates with Brad's comments

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/27614/files
  - new: https://git.openjdk.org/jdk/pull/27614/files/02eab2f2..cf47f821

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27614&range=19
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27614&range=18-19

  Stats: 10 lines in 2 files changed: 5 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/27614.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27614/head:pull/27614

PR: https://git.openjdk.org/jdk/pull/27614