microsoft / microsoft/openjdk

Sign jrt-fs.jar in OpenJDK builds

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Description

Discussed in https://github.com/microsoft/openjdk/discussions/672

Originally posted by bambooflower227 February 26, 2026
When I asked the systems department to install "microsoft-jdk-21.0.9-windows-x64.zip", they told me, "There is a risk because it is not code signed. Ask the vendor to issue a code signature."
Is it possible to request that the following file, which is created during installation, be code signed?
C:\Users\Administrator\Desktop\openjdk-25.0.1_windows-x64_bin\jdk-25.0.1\lib\jrt-fs.jar

NOTE: We will need to review the status of other jars and the impact of this signing on other functionality (e.g., Leyden's AOT cache).

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked discussion 672 to understand the request for signing jrt-fs.jar in Microsoft OpenJDK builds. Review the status of other JARs and the impact on functionality such as Leyden's AOT cache; done means the signing approach and its effects are assessed.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
build-system, security
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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