Android studio Update bundle jarsigner: key associated with key0 not a private key

Question

These are the steps I am taking, in the order presented, to update a published app after fixing a bug, through Android studio:

1. Fix the bug.

2. Changed to versionCode 2 and versionName "1.1" on build.gradle (Module)

3. Generate Signed Bundle

4. Key-store path is C:\Folder\Folder\Android\MyApp.jks

5. Both passwords are correct

6. Key alias: key0 (default as on first time)

But then this error is raised:

Cause: jarsigner.exefailed with exit code 1 :
jarsigner: key associated with key0 not a private key

What could be causing this?

Answer 1

"Build" -> "Clean project", then "Generate signed ..." again - worked fine for me

Answer 2

it's simply means that you enter wrong key let me explain

1. your password for keystore correct
2. you password for The key is't correct

Answer 3

I had the same issue, I have tried Clean Build and Invalidate Caches/Restart but didn't work. Finally I entered a Wrong KeyStore password then it has shown some error like jarsigner error: java.lang.RuntimeException: keystore load: Keystore was tampered with, or password was incorrect. Then I tried with the Original one and it worked.

Answer 4

For those coming to this question to build a release candidate of a React Native app for the Play Store, or if building without Android Studio.

a) Cleaning the project is particularly useful if you've had previous errors in your release packaging:

cd android
./gradlew clean

b) Check to see if your keystore was created correctly, with a valid, exportable certificate embedded inside:

keytool -export -alias your-keystore-alias -file mycertificate.crt -keystore /path/to/keystore 

You will be prompted for the keystore password you used when generating the keystore. If you get a mycertificate.crt file created successfully, there isn't anything wrong with your keystore. It's valid.

c) The not a private key error can also come up if you've not explicitly supplied a key password, and just a store password (as shown below), in your gradle release build properties:

MYAPP_UPLOAD_STORE_FILE=my-app.keystore
MYAPP_UPLOAD_KEY_ALIAS=my-app
MYAPP_UPLOAD_STORE_PASSWORD=keystorePassword
MYAPP_UPLOAD_KEY_PASSWORD=

When generating a signing certificate with keytool, there is an optional argument to generate a separate certificate password, apart from the keystore password. However, if no certificate/key password is supplied, it inherits the keystore password. So in this case, a working set of properties would be:

MYAPP_UPLOAD_STORE_FILE=my-app.keystore
MYAPP_UPLOAD_KEY_ALIAS=my-app
MYAPP_UPLOAD_STORE_PASSWORD=keystorePassword
MYAPP_UPLOAD_KEY_PASSWORD=keystorePassword