RFR: 8253176: Signature.getParameters should specify that it can throw UnsupportedOperationException [v2]

[Weijun Wang]

On Mon, 2 May 2022 21:14:21 GMT, Valerie Peng <valeriep at openjdk.org> wrote:

>> Then what does "cannot generate parameter values" mean? Any example?
>
> An example is RSASSA-PSS, i.e. it requires the caller to explicitly state which message digest to use, etc.

You listed 2 cases when null is returned: 1) not supplied. 2) cannot generate. My understanding is that the RSASSA-PSS case is 1), and the EdDSA case is 2). This is why I suggested an "or" relation between them.

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PR: https://git.openjdk.java.net/jdk/pull/8396