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List APK signing certificate fingerprint so users can verify releases

Open Beginner friendly
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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
72/100
Issue type
Documentation
Clarity
Mostly clear
Activity status
Active
Tech stack
android, kotlin

Research direction

Start by locating the published APK in the Releases page and inspect its signing certificate with keytool or an equivalent Android tool. Add the SHA-256 fingerprint, with SHA-1 if available, to the README or release information. Done means users can compare the published fingerprint with the APK they installed.

Written by the indexing model from the issue text.

Description

Use case

I'm installing this app via Obtanium / sideloading, and I'd like to make sure the APK I install is genuinely signed by you (and not a tampered or repackaged build).

To verify this, I use a certificate-fingerprint check (e.g., AppVerifier, or keytool -printcert -jarfile app.apk on desktop). For that to work, I need the signing certificate's fingerprint published somewhere I can compare against.

Proposed solution

Please add the SHA-256 fingerprint of the signing certificate (SHA-1 is a fine bonus) to the README and/or the Releases page, e.g.:

Dominant language
Kotlin
Stars
29.9k
Forks
1.7k
PR merge metrics
No merged PRs in 30d

Getting set up

We have not checked this project's setup files yet. Start from its README, and see our first-contribution guide for the general steps.

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.

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