On Tue, 13 Aug 2024 15:24:11 GMT, Kevin Driver <kdri...@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:
> 
>   addressed several review comments, namely: - renaming the getParameters 
> method - renaming the AlgorithmParameterSpec object - address some javadoc 
> exception messages - add some information to KDF class private constructor 
> javadocs - other general cleanup

src/java.base/share/classes/javax/crypto/KDF.java line 585:

> 583:             throw e;
> 584:         }
> 585:     }

As discussed separately, if we enhance the logic of finding the `firstService` 
with the instantiation and instaneof KDFSpi check (on line 564-567), then we 
don't need to repeat the code here. We can just simply assign it to `spi`, set 
`serviceIterator` to `null` and be done with it.

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

PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1716213752

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