RFR: 8256363: Define toString() for MGF1ParameterSpec [v3]

[Sean Mullan]

On Tue, 17 Nov 2020 15:37:18 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> Without this method, `PSSParameterSpec::toString` shows something like:
>> MD: SHA-256
>> MGF: java.security.spec.MGF1ParameterSpec at 77b52d12
>> SaltLength: 32
>> TrailerField: 1
>> This is ugly.
>> 
>> Noreg-trivial.
>
> Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   choose a record-style format

Marked as reviewed by mullan (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/1208