RFR: 8351113: RC2ParameterSpec throws IllegalArgumentException when offset is negative [v2]

[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:

  need test

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24854/files
  - new: https://git.openjdk.org/jdk/pull/24854/files/8b111728..064c847f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24854&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24854&range=00-01

  Stats: 22 lines in 1 file changed: 22 ins; 0 del; 0 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