I want to change the key mentioned in fig., when i change the certificate file it changes to the another temporary key, and the publisher folder is creating with this key as name. but i want it as a meaningful name. is it possible.? if anybody knows, please help me.
Together, these elements declare the identity of your app, establishing the "package family" to which all of its packages belong. Individual packages will have additional details, such as architecture and version.
The package family name is the combination of YourProjectName and TemporaryKey. And the Temporaraykey is a hash value of the Publisher. PFN(Package family name) gets automatically populated as a combination of Package name and the Temporarykey. It just changes with the value of Publisher changing. But it will always be a hash value not a meaningful name.
来源：https://stackoverflow.com/questions/43316752/how-can-i-change-the-package-family-name-in-uwp-windows-10