RFR: 8331008: KDF Implementation

[Sean Mullan]

On Tue, 23 Apr 2024 20:42:51 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).

src/java.base/share/classes/javax/crypto/KDF.java line 246:

> 244:         } catch (NoSuchAlgorithmException nsae) {
> 245:             throw new NoSuchAlgorithmException("Algorithm " + algorithm + " not available", nsae);
> 246:         }

Why do you catch and rethrow the NSAE exception? Also, `GetInstance.getInstance` does not throw `InvalidParameterSpecException`. You will need to catch the NSAE and see if the cause is an IPSE and then rethrow as an IPSE - see the `CertStore` code for an example.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18924#discussion_r1595609212