RFR: 8325513: Export method for Cipher [v3]

[Jamil Nimeh]

On Fri, 10 May 2024 14:00:55 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> Add `Cipher::export` API.
>
> Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   change new method to non final

I see that it could work that way, but have we firmly established that HPKE will be implemented in JCE as a Cipher?  I see no CSR for this and I would think we'd need one.  If we have not firmly established that HPKE is being done as a Cipher, then changing Cipher in advance seems like putting the cart before the horse.  I just thought I'd see CSRs in place for JDK-8325513 and/or JDK-8325548 and some kind of consensus on the direction.  Maybe I missed an agreement on this approach in the past.

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PR Comment: https://git.openjdk.org/jdk/pull/18409#issuecomment-2112942149