RFR: 8351113: RC2ParameterSpec throws IllegalArgumentException when offset is negative [v5]

[Mark Powers]

> [JDK-8351113](https://bugs.openjdk.org/browse/JDK-8351113)

Mark Powers has updated the pull request incrementally with one additional commit since the last revision:

  third comment from Sean

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24854/files
  - new: https://git.openjdk.org/jdk/pull/24854/files/b0193ad7..2ad5edcb

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24854&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24854&range=03-04

  Stats: 19 lines in 1 file changed: 18 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/24854.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24854/head:pull/24854

PR: https://git.openjdk.org/jdk/pull/24854