RFR: 8331008: Implement JEP 478: Key Derivation Function API (Preview) [v16]

[Valerie Peng]

On Wed, 28 Aug 2024 20:44:10 GMT, Kevin Driver <kdriver at openjdk.org> wrote:

>> Introduce an API for Key Derivation Functions (KDFs), which are cryptographic algorithms for deriving additional keys from a secret key and other data. See [JEP 478](https://openjdk.org/jeps/478).
>> 
>> Work was begun in [another PR](https://github.com/openjdk/jdk/pull/18924).
>
> Kevin Driver has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - consistency with wording for addIKM and addSalt
>  - another round of code review comments

src/java.base/share/classes/com/sun/crypto/provider/HkdfKeyDerivation.java line 147:

> 145:             // we should be able to combine these Lists of key segments into
> 146:             // single SecretKey Objects, unless we were passed something bogus
> 147:             // or an unexportable P11 key

Still has typo "Objects", should be "object".
BTW, I still strongly feel that it can be combined into a byte[] instead of a SecretKey object.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1736940767