I run 2 command

keytool -genkeypair -alias upload -keyalg RSA -keysize 2048 -validity 9125 -keystore keystore.jks

This command create keystore.jks. Export the certificate for that key to PEM format (upload_certificatie.pem). I will attach upload_certificatie.pem and reply Googleplay developer support to reset the upload key for my app.

keytool -genkeypair -v -storetype PKCS12 -keystore my-upload-key.keystore -alias my-key-alias -keyalg RSA -keysize 2048 -validity 9125

This command create my-upload-key.keystore that will be placed in the ./android/app folder in my react native project.

I lost my old my-upload-key.keystore. Will the above commands help me keep updating my app? Thank you for your help!

CodePudding user response：

The answer to your question is no. When you loose your keystore you cannot make updates to that application. You will have to make a new application in the play store.

Your only other option is to make a new keyfile and contact google support.

https://medium.com/@farukcankaya/recover-your-lost-android-keystore-file-633c853bd11f

You can create a keyfile with the following command (Keystore and JKS are basically the same):

keytool -genkeypair -v -storetype PKCS12 -keystore my-upload-key.keystore -alias my-key-alias -keyalg RSA -keysize 2048 -validity 10000