RFR: 8325448: Hybrid Public Key Encryption [v45]

[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 with a new target base due to a merge or a rebase. The pull request now contains 61 commits:

 - Merge branch 'master' into 8325448
 - Tony's comment
 - more key checks; some small spec change
 - Merge branch 'master' into 8325448
 - about transformation
 - cannot reset with withMethods
 - algorithm identifier
 - withMethods
 - duplicated "value" words
 - receiver to recipient; different to specified
 - ... and 51 more: https://git.openjdk.org/jdk/compare/a9254613...8c6cffa4

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Changes: https://git.openjdk.org/jdk/pull/18411/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18411&range=44
  Stats: 2160 lines in 12 files changed: 1963 ins; 74 del; 123 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