RFR: 8325448: Hybrid Public Key Encryption [v26]

[Artur Barashev]

On Wed, 13 Aug 2025 19:00:41 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:
> 
>   rename variables in a test

test/jdk/com/sun/crypto/provider/Cipher/HPKE/Functions.java line 71:

> 69:             var kp2 = genKeyPair(param.name());
> 70:             var params = HPKEParameterSpec
> 71:                     .of(param.kem, KDF_HKDF_SHA256, AEAD_AES_256_GCM);

What's the reason that we cycle though KEM IDs but always use the same KDF and AEAD IDs?

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PR Review Comment: https://git.openjdk.org/jdk/pull/18411#discussion_r2274520544