Checkey is a utility for getting information about the APKs that are installed on your device. Starting with a list of all of the apps that you have installed on your device, it will show you the APK signature with a single touch, and provides links to virustotal.com and androidobservatory.org to easily access the profiles of that APK. It will also let you export the signing certificate and generate ApkSignaturePin pin files for use with the TrustedIntents library.
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Guardian Project
com.google.android.apps.googleassistant
Guardian Project
F-Droid Glossary
Guardian Project
Guardian Project
Guardian Project
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HTTPS
HTTPS
Tor Project glossary
Hypertext Transfer Protocol Secure is the encrypted version of the HTTP channel used to transfer files and data between devices on a network.