How does Android studio view the program's security code to get SHA1 values?

How does Android studio look at the program's security code to get SHA1 value? Using the Baidu Map SDK for Android development, you need to enter the Android SDK security code when you apply for the key, primarily to get the SHA1 value.

1, the Project interface right click "Gradle"-> signingreport, and then click the Refresh button, the application name appears

2, find and click Tasks->android->signingreport

3, in the Information output box to display the release and development version of the security Code (MD5 and SHA1)