RFR: 8285404: RSA signature verification should follow RFC 8017 8.2.2 Step 4

[Valerie Peng]

On Fri, 22 Apr 2022 17:10:58 GMT, Weijun Wang <weijun at openjdk.org> wrote:

> Compare encoded instead of decoded digest in RSA signature verification.

Regardless whether we ended up with decode/encode, we should make sure RSASSA-PSS signature impl is also covered and consistent.

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PR: https://git.openjdk.java.net/jdk/pull/8365