RFR: 8331008: Implement JEP 478: Key Derivation Function API (Preview) [v63]

[Valerie Peng]

On Mon, 21 Oct 2024 18:21:37 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 one additional commit since the last revision:
> 
>   remove unused method

src/java.base/share/classes/com/sun/crypto/provider/HKDFKeyDerivation.java line 49:

> 47:  * <p>
> 48:  * This class implements the HKDF-Extract and HKDF-Expand functions from RFC
> 49:  * 5869.  This implementation provides the complete Extract-then-Expand HKDF

Do we need to provide link for RFC 5869 and add the @spec tag as in the PR for JDK-8305406?

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PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1813665021