RFR: 8302017: Allocate BadPaddingException only if it will be thrown [v2]

[Valerie Peng]

> This change refactors the RSAPadding class to return an output record containing the status instead of relying on exception object to indicate a failure.
> 
> Thanks in advance for review~
> Valerie

Valerie Peng has updated the pull request incrementally with one additional commit since the last revision:

  Address review feedbacks, e.g. Removed RSAPadding.Output and use byte[] as before.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14839/files
  - new: https://git.openjdk.org/jdk/pull/14839/files/52e8e28f..cbb958d9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14839&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14839&range=00-01

  Stats: 83 lines in 5 files changed: 17 ins; 24 del; 42 mod
  Patch: https://git.openjdk.org/jdk/pull/14839.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14839/head:pull/14839

PR: https://git.openjdk.org/jdk/pull/14839