Can an Android application developer key be transferred to another developer?

Question

Android

Good afternoon friends.
Tell me please.
When transferring an application to a new owner and a digital signature key, can you be sure that the rights to this application have been fully obtained, or do you need to upload it with your own digital key? Is the digital signature not tied to the original owner? Can the old owner somehow harm the application in the future if he has a key?
Please help, I really need information.

Answer 1

You should be given the keystore file used for signing and a bunch of passwords, aliases. This good will continue to sign the application if it is necessary to update the version in the Play Store.
If you want to make your own application based on the code and publish it, just change the signature data.
If you need to work on an existing application, change the password for your Google Developer account, through which you get access to the application console