exporting a PEM file from unity Keystore

This question is crucial for all the people who lost their password and ask Google play to reset the publication of their App. i am surprised that no one from Unity has replied yet.
I search how to export a PEM file (needed by google to reset for a new key) from the unity keystore format
it looks really complex. is there a simple method that unity has thought about?

thanks for your help

Unity doesn’t have any kind of custom format. The keystore file is created by the Android SDK. It’s essentially just a Java Keystore. This page should cover almost all details about app signing and certificates.

For us the only way was unfortunately only via Android Studio and a direct contact with Google.