RFR: 8325448: Hybrid Public Key Encryption [v15]

[Weijun Wang]

> Implement HPKE as defined in https://datatracker.ietf.org/doc/rfc9180/.
> ![hpke](https://github.com/user-attachments/assets/4edc5d08-ef52-44c5-b5d5-e8890c2d2fce)

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

  toString, exportData, spec in HPKEParameters must have algorithm identifiers specified

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18411/files
  - new: https://git.openjdk.org/jdk/pull/18411/files/0796a423..17dceaa9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18411&range=14
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18411&range=13-14

  Stats: 78 lines in 4 files changed: 68 ins; 0 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