RFR: 8325448: Hybrid Public Key Encryption [v28]

[Artur Barashev]

On Wed, 13 Aug 2025 22:50:35 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> Implement HPKE as defined in https://datatracker.ietf.org/doc/rfc9180/.
>> 
>> ![HPKEParameterSpec06-27-3](https://github.com/user-attachments/assets/a17e7ea2-86dd-4e2d-9506-210e97ff8ae8)
>
> Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   remove HPKEParameters

test/jdk/com/sun/crypto/provider/Cipher/HPKE/Compliance.java line 37:

> 35: import java.security.KeyPairGenerator;
> 36: import java.security.spec.InvalidParameterSpecException;
> 37: import java.security.spec.NamedParameterSpec;

Nit: there are 4 unused imports now

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PR Review Comment: https://git.openjdk.org/jdk/pull/18411#discussion_r2276934619