RFR: 4936767: Parameters for MessageDigest [v2]

[Weijun Wang]

> Add parameters to `MessageDigest` and introduce `SHAKE256-LEN` with an integer parameter.

Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:

  throw iape

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16660/files
  - new: https://git.openjdk.org/jdk/pull/16660/files/755d5d01..d01bf939

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16660&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16660&range=00-01

  Stats: 68 lines in 4 files changed: 44 ins; 0 del; 24 mod
  Patch: https://git.openjdk.org/jdk/pull/16660.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16660/head:pull/16660

PR: https://git.openjdk.org/jdk/pull/16660