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Get signature info

Recently I had to verify the authenticity of digital signatures contained on APK files from system apps and .zip files belonging to OTA firmware updates of a specific android device. On Windows 10, all I had to do is use the unzip command together with the keytool command.

APK files:

Zip files:

As you can see, both commands are the same and can be used in different types of files – although an apk is basically a .zip file.