RFR: 8353113: Peer supported certificate signature algorithms are not being checked with default SunX509 key manager [v2]

[Artur Barashev]

> When the deafult SunX509KeyManagerImpl is being used we are in violation of TLSv1.3 RFC spec because we ignore peer supported certificate signatures sent to us in "signature_algorithms"/"signature_algorithms_cert" extensions:
> https://datatracker.ietf.org/doc/html/rfc8446#section-4.4.2.2
> https://datatracker.ietf.org/doc/html/rfc8446#section-4.4.2.3
> 
> X509KeyManagerImpl on the other hand includes the algorithms sent by the peer in "signature_algorithms_cert" extension (or in "signature_algorithms" extension when "signature_algorithms_cert" extension isn't present) in the algorithm constraints being checked.

Artur Barashev has updated the pull request incrementally with one additional commit since the last revision:

  Add PeerConstraintsCheck unit test

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25016/files
  - new: https://git.openjdk.org/jdk/pull/25016/files/75528109..88cd4016

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25016&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25016&range=00-01

  Stats: 284 lines in 3 files changed: 277 ins; 5 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/25016.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25016/head:pull/25016

PR: https://git.openjdk.org/jdk/pull/25016