How do I verify that an Android apk is signed with a release certificate?
Use this command, (go to java < jdk < bin path in cmd prompt)
$ jarsigner -verify -verbose -certs my_application.apkIf you see "CN=Android Debug", this means the .apk was signed with the debug key generated by the Android SDK(means it is unsigned), otherwise you will find something for CN.For more details see: http://developer.android.com/guide/publishing/app-signing.html
Use console command:
apksigner verify --print-certs application-development-release.apk
You could find apksigner in ../sdk/build-tools/24.0.3/apksigner.bat. Only for build tools v. 24.0.3 and higher.
Also read google docs: https://developer.android.com/studio/command-line/apksigner.html
Use this command : (Jarsigner is in your Java bin folder goto java->jdk->bin path in cmd prompt)
$ jarsigner -verify my_signed.apkIf the .apk is signed properly, Jarsigner prints "jar verified"