RFR: 8002277: Refactor two PBE classes to simplify maintenance [v8]

Tue May 17 19:00:00 UTC 2022

On Thu, 12 May 2022 22:52:59 GMT, Valerie Peng <valeriep at openjdk.org> wrote:

>> This change refactors the PBES2Core and PKCS12PBECipherCore classes in SunJCE provider as requested in the bug record. Functionality should remain the same with a clearer and simplified code/control flow with less lines of code.  This should improve readability and maintenance. I enhanced one existing regression test to test more scenarios. This test would pass before the proposed change and continues to pass with the proposed changes.
>
> Valerie Peng has updated the pull request incrementally with one additional commit since the last revision:
> 
>   reset ivSpec and minor nit fix.

Marked as reviewed by weijun (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/8521