RFR: 8325448: Hybrid Public Key Encryption [v47]

[Weijun Wang]

> Implement HPKE as defined in https://datatracker.ietf.org/doc/rfc9180/.
> <img alt="image" src="https://github.com/user-attachments/assets/df3b454d-2161-4036-9930-c4f84d887b31" />

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

  check null and tests

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18411/files
  - new: https://git.openjdk.org/jdk/pull/18411/files/b5112151..4d5b15f7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18411&range=46
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18411&range=45-46

  Stats: 10 lines in 2 files changed: 9 ins; 0 del; 1 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