On Fri, 13 Sep 2024 19:39:04 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:
> 
>   refine wording on DPS getInstance with params exception

src/java.base/share/classes/javax/crypto/KDFSpi.java line 95:

> 93:      * If the required parameters were not supplied and can be generated 
> by
> 94:      * the {@code KDF} object, the generated parameters are returned;
> 95:      * otherwise {@code null} is returned.

According to the class spec, when you say parameters are _required_ the caller 
must provide a non-null value. The sentence above contradicts with this.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1759639690

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