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/com/sun/crypto/provider/HkdfKeyDerivation.java line 
279:

> 277: 
> 278:     /**
> 279:      * Perform the HMAC-Extract operation.

typo: 'HMAC' should be 'HKDF'

src/java.base/share/classes/com/sun/crypto/provider/HkdfKeyDerivation.java line 
284:

> 282:      *     the input keying material used for the HKDF-Extract operation.
> 283:      * @param salt
> 284:      *     the salt value used for HKDF-Extract.  If no salt is to be 
> used a

"If no salt is to be used a {@code null} value should be provided." should be 
"if no salt is given, a (@code null} is passed"

src/java.base/share/classes/com/sun/crypto/provider/HkdfKeyDerivation.java line 
310:

> 308: 
> 309:     /**
> 310:      * Perform the HMAC-Expand operation.  At the end of the operation, 
> the

typo: 'HMAC' should be 'HKDF'.

src/java.base/share/classes/com/sun/crypto/provider/HkdfKeyDerivation.java line 
331:

> 329:      *     or derived during the generation of the PRK.
> 330:      */
> 331:     protected byte[] hkdfExpand(SecretKey prk, byte[] info, int outLen)

Same here, can be made 'private'.

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

PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1719066716
PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1719069276
PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1719067109
PR Review Comment: https://git.openjdk.org/jdk/pull/20301#discussion_r1719064506

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