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So i just created a libGDX project,imported it in intellij and wanted to run it on my android device then i encountered this error :

Cause: class "org.bouncycastle.jcajce.provider.symmetric.IDEA$Mappings"'s signer information does not match signer information of other classes in the same package

Please can anybody tell me how to fix this?Thank you

Gagiu Filip
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2 Answers2

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@Gagiu Filip.

Instead of it, just run the following line in the terminal. 

keytool -genkey -v -keystore ~/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -keyalg RSA -keysize 2048 -validity 10000

It will create a debug.keystore))

Gag Baghdasaryan
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    I had the exact same error in Android Studio 3.6.1 and LibGDX 1.9.10 and this solved my problem. – Joseph Bani Mar 25 '20 at 08:11
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    This worked for me, but i had to make sure i created the key in my ".android" folder. – Wind up Beanie Dec 25 '20 at 01:51
  • Adding to what @WindupBeanie said, this is the .android folder in the user directory (C:\Users\\.android) – dag roger stokland rui Feb 23 '21 at 22:35
  • I tried running the command but getting error keytool : The term 'keytool' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again. I downloaded android studio today which is latest version and libgdx is also latest. I dont have any experience with android just using it for libgdx – Shivam... Dec 02 '22 at 08:02
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    Running this command solved the problem for me as well. Thank you! Note that you may need to adjust the file path ("~/.android/debug.keystore") depending on your OS and username. – Andreas Vogl Mar 05 '23 at 15:30
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Well i found how to solve it...It was the keystore that wasn't good, and it looks like the keystore was not creating when i was running my application .I tried to create one with the key tool but failed because it told me the key was tempered. THE FIX WAS TO CREATE A APPLICATION IN ANDROID STUDIO AND RUN IT ON MY PHONE THEN THE KEYSTORE WOULD BE CREATED AND MY APPS WILL WORK AFTER...

Gagiu Filip
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