RFR: 8241306: Add SignatureMethodParameterSpec subclass for RSASSA-PSS params [v7]

[Sean Mullan]

On Tue, 13 Apr 2021 18:16:30 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> This enhancement contains the following code changes:
>> 
>> 1. Create a new public API `javax/xml/crypto/dsig/spec/RSAPSSParameterSpec` and remove the internal one.
>> 2. Update marshaling and unmarshaling code inside `DOMRSAPSSSignatureMethod` so it understands extra fields in `PSSParameterSpec` and is aware of the defaults in both directions.
>> 3. Update `DOMSignedInfo` so that secure validation can restrict `DigestMethod` used inside `RSAPSSParameterSpec`
>> 4. Tests
>
> Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   more spec clarification

Marked as reviewed by mullan (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/3181