RFR: JDK-8338587 - Internal XOF Methods for SHAKE128 and SHAKE256

[Ferenc Rakoczi]

On Sat, 24 Aug 2024 12:02:49 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> In preparation for the new PQC algorithms implementations, internal XOF (eXtendable Output Function) methods are added to the SHAKE128 and SHAKE256 implementations.
>
> src/java.base/share/classes/sun/security/provider/SHA3.java line 123:
> 
>> 121:      */
>> 122:     void implDigest(byte[] out, int ofs) {
>> 123:         byte[] byteState = new byte[8];
> 
> `byteState` can be moved to line 150.

If I do that, the performance drops a little. So I rather keep it here.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/20631#discussion_r1731261658