RFR: 8325448: Hybrid Public Key Encryption [v4]

[Weijun Wang]

> Implement HPKE as defined in https://datatracker.ietf.org/doc/rfc9180/.
> 
> ![HPKEParameterSpec](https://github.com/user-attachments/assets/4f64567a-59b0-473e-8a3b-416565f5bca5)

Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:

  kevin comments

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18411/files
  - new: https://git.openjdk.org/jdk/pull/18411/files/7e525f12..8ae9a521

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18411&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18411&range=02-03

  Stats: 56 lines in 3 files changed: 45 ins; 1 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/18411.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18411/head:pull/18411

PR: https://git.openjdk.org/jdk/pull/18411