[jdk17u-dev] RFR: 8289301: P11Cipher should not throw out of bounds exception during padding

[zzambers]

Backport fixing possible out of bounds exception during padding in P11Cipher.

Applied cleanly. Passed jdk_security tests.

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Commit messages:
 - Backport 3e60e828148a0490a4422d0724d15f3eccec17f0

Changes: https://git.openjdk.org/jdk17u-dev/pull/706/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=706&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8289301
  Stats: 124 lines in 2 files changed: 117 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/706.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/706/head:pull/706

PR: https://git.openjdk.org/jdk17u-dev/pull/706