RFR: 8331008: KDF Implementation [v2]

[Weijun Wang]

On Thu, 9 May 2024 16:19:36 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).
>
> Kevin Driver has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains ten additional commits since the last revision:
> 
>  - move the test to the correct directory, which was already created
>  - tests passing
>  - start deriveKey
>  - remove SHA224 mentions
>  - remove SHA224 mentions
>  - additional helper methods
>  - parameter validation for impl
>  - parameter validation for impl
>  - initial commit into open

src/java.base/share/classes/javax/crypto/KDFSpi.java line 107:

> 105:      *     if the key derivation implementation cannot support additional calls to
> 106:      *     {@code deriveData } or if all {@code DerivationParameterSpec} objects have been
> 107:      *     processed.

What kind of exception will be thrown if the derived key of this KDF is not extractable?

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PR Review Comment: https://git.openjdk.org/jdk/pull/18924#discussion_r1595707637