8347596: Update HSS/LMS public key encoding

[phohensee]

Backport for parity with Oracle 21.0.8. Clean except the hunk for KeyUtil.java applies to code that doesn't exist in 21u.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed

Error

 ⚠️ This PR only contains changes already present in the target

Issue

• JDK-8347596: Update HSS/LMS public key encoding (Bug - P3 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/1719/head:pull/1719
$ git checkout pull/1719

Update a local copy of the PR:
$ git checkout pull/1719
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/1719/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1719

View PR using the GUI difftool:
$ git pr show -t 1719

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/1719.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back phh! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[mlbridge]

Webrevs

• 00: Full (2fcbc525)