RFR: 8314323: Implement JEP 527: TLS 1.3 Hybrid Key Exchange [v14]

[Bradford Wetmore]

On Sat, 6 Dec 2025 07:22:44 GMT, Bradford Wetmore <wetmore at openjdk.org> wrote:

>> Hai-May Chao has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - Updates with Weijun's comments
>>  - Comments added for possession creation per handshake
>
> src/java.base/share/classes/sun/security/ssl/Hybrid.java line 319:
> 
>> 317:     }
>> 318: 
>> 319:     private static byte[] concat(byte[]... inputs) {
> 
> @wangweij did the following in `com.sun.crypto.provider.DHKEM.java` and `c.s.c.p.HPKE.java`:
> 
>     private static byte[] concat(byte[]... inputs) {
>         ByteArrayOutputStream o = new ByteArrayOutputStream(); 
>         Arrays.stream(inputs).forEach(o::writeBytes);
>         return o.toByteArray();
>     }
> 
> Since this is the third usage in the last couple years, maybe put this in a utility class instead and adjust the other instances?

Were you going to update this?

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PR Review Comment: https://git.openjdk.org/jdk/pull/27614#discussion_r2600274684