RFR: 8320192: SHAKE256 does not work correctly if n >= 137 [v5]

[Weijun Wang]

> When blocksize is less than digest output length, call `keccak` more.

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

  update comment

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16698/files
  - new: https://git.openjdk.org/jdk/pull/16698/files/80a6fe66..12c89941

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16698&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16698&range=03-04

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/16698.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16698/head:pull/16698

PR: https://git.openjdk.org/jdk/pull/16698