Can I Re-sign An .apk With A Different Certificate Than What It Came With?


Answer :

try this

1) Change the extension of your .apk to .zip

2) Open and remove the folder META-INF

3) Change the extension to .apk

4) Use the jarsigner and zipalign with your new keystore.

hope it helps


If you are looking for a quick simple solution, you can use Google's apksigner command line tool which is available in revision 24.0.3 and higher.

apksigner sign --ks release.jks application.apk

You can find more information about apksigner tool, at the developer Android site.

https://developer.android.com/studio/command-line/apksigner.html

Or, alternatively, you may use an open-source apk-resigner script

Open Source apk-resigner script https://github.com/onbiron/apk-resigner

All you have to do is, download the script and just type:

   ./signapk.sh application.apk keystore key-pass alias 

zip -d my_application.apk META-INF/\* keytool -genkey -v -keystore my-release-key.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000 jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore my-release-key.keystore my_application.apk alias_name zipalign -v 4 your_project_name-unaligned.apk your_project_name.apk

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