java.lang.SecurityException: cannot verify signature block file META-INF/CERT

[brianbwong]

I am not able to sign my APK. My commands:

java -jar ../sign.jar uncrackable_apk_mod.apk
jarsigner -verify uncrackable_apk_mod.s.apk

Output:
jarsigner: java.lang.SecurityException: cannot verify signature block file META-INF/CERT

I'm on openjdk version 13.0.2.

[samyual]

The same error/ OpenJDK version 14.0.1

[caiocinel]

same here

[caiocinel]

*update

I started using Manjaro to make modifications to APKs but I also had the same problem.

So I started using the Uber APK Signer until everything was resolved.

[HemanthJabalpuri]

Someone test my tool and tell me if it has same error https://github.com/HemanthJabalpuri/signapk/releases/tag/4.0

I have also used the similar source.

[nattyalem]

I have the same error, but it happen when I'm trying to flutter run.

[patcon]

For me, this was because I was using openJDK instead of java 1.8. This helped me get it working: https://stackoverflow.com/a/24657630/504018