[jdk21u-dev] RFR: 8342181: Update tests to use stronger Key and Salt size

[Goetz Lindenmaier]

I backport this for parity with 21.0.6-oracle.
Resolved TestOAEPPadding because of context difference. Probably considered clean.

-------------

Commit messages:
 - Backport f340ab2d360b5dfd375095ac053e9f4fc22a98de

Changes: https://git.openjdk.org/jdk21u-dev/pull/1144/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1144&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342181
  Stats: 240 lines in 40 files changed: 138 ins; 0 del; 102 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1144.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1144/head:pull/1144

PR: https://git.openjdk.org/jdk21u-dev/pull/1144