create a sha256 key code example

Example 1: generate sha key

keytool -list -v -keystore c:\Users\[your username]\.android\debug.keystore -alias androiddebugkey -storepass android -keypass android

Example 2: Generate SHA Key

keytool -list -v -alias androiddebugkey -keystore C:\Users\YOURUSERNAME\.android\debug.keystore