8369282: Distrust TLS server certificates anchored by Chunghwa ePKI Root CA

[rm-gh-8]

Backporting JDK-8369282: Distrust TLS server certificates anchored by Chunghwa ePKI Root CA.

This PR implements OpenJDK distrust of TLS certificates anchored by Chunghwa Telecom's ePKI Root CA (following Google/Mozilla). Certificates issued after March 17, 2026 will be rejected during TLS handshakes in SunJSSE.

For parity with Oracle JDK.

Ran related tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

make test TEST=test/jdk/sun/security/ssl/X509TrustManagerImpl/distrust/Chunghwa.java

Results attached:

windows-x64-specific-test.log
macos-aarch64-specific-test.log
linux-x64-specific-test.log
linux-aarch64-specific-test.log

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8369282 needs maintainer approval
• Change requires CSR request JDK-8374054 to be approved

Issues

• JDK-8369282: Distrust TLS server certificates anchored by Chunghwa ePKI Root CA (Enhancement - P3 - Approved)
• JDK-8374054: Distrust TLS server certificates anchored by Chunghwa ePKI Root CA (CSR)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk25u-dev.git pull/255/head:pull/255
$ git checkout pull/255

Update a local copy of the PR:
$ git checkout pull/255
$ git pull https://git.openjdk.org/jdk25u-dev.git pull/255/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 255

View PR using the GUI difftool:
$ git pr show -t 255

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk25u-dev/pull/255.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back rm-gh-8! 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]

@rm-gh-8 This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8369282: Distrust TLS server certificates anchored by Chunghwa ePKI Root CA

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 23 new commits pushed to the master branch:

• 0e11a1a: 8368677: acvp test should throw SkippedException when no ACVP-Server available
• 2feddce: 8375598: VM crashes with "assert((labs(val) & 0xFFFFFFFF00000000) == 0 || dest == (address)-1) failed: must be 32bit offset or -1" when using too high value for NonNMethodCodeHeapSize
• db62fdd: 8373021: aarch64: MacroAssembler::arrays_equals reads out of bounds
• ... and 20 more: https://git.openjdk.org/jdk25u-dev/compare/40ec273de548b47fc08d02bbe7c1cb3b48ebad17...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[openjdk]

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

[openjdk]

⚠️ @rm-gh-8 This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 00: Full (19596d16)

[rm-gh-8]

/approval request for backport of JDK-8369282: Distrust TLS server certificates anchored by Chunghwa ePKI Root CA.

This PR implements OpenJDK distrust of TLS certificates anchored by Chunghwa Telecom's ePKI Root CA (following Google/Mozilla). Certificates issued after March 17, 2026 will be rejected during TLS handshakes in SunJSSE.

For parity with Oracle JDK.

High risk - Taiwan/APAC organizations using Chunghwa certificates will face TLS failures after JDK upgrade. Third-party services with affected certificates will break.

[openjdk]

@rm-gh-8
8369282: The approval request has been created successfully.

[rm-gh-8]

/integrate

[openjdk]

@rm-gh-8
Your change (at version 19596d1) is now ready to be sponsored by a Committer.

[phohensee]

/sponsor

[openjdk]

Going to push as commit 4b02ce9.
Since your change was applied there have been 32 commits pushed to the master branch:

• 68f9133: 8352149: Test java/awt/Frame/MultiScreenTest.java fails: Window list is empty
• 7084e45: 8274082: Wrong test name in jtreg run tag for java/awt/print/PrinterJob/SwingUIText.java
• 629dae3: 8367784: java/awt/Focus/InitialFocusTest/InitialFocusTest1.java failed with Wrong focus owner
• ... and 29 more: https://git.openjdk.org/jdk25u-dev/compare/40ec273de548b47fc08d02bbe7c1cb3b48ebad17...master

Your commit was automatically rebased without conflicts.

[openjdk]

@phohensee @rm-gh-8 Pushed as commit 4b02ce9.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.