Getting certificate details from an apk

Question

How do i go about getting the details of the certificate an apk was signed with. I have a bunch of apks signed with different certificate and I am trying to group them based

Answer 1

Based on the existing answers, here's the command line for on-the-fly usage of openssl (unzip & pipe the cert instead of defining an -infile option):

unzip -p App.apk META-INF/CERT.RSA |openssl pkcs7 -inform DER -noout -print_certs -text

Answer 2

The easiest of all:

keytool -printcert -jarfile file.apk

This also works for Android App Bundles (.aab)

Answer 3

without unpacking you can use ApkSigner from Android SDK and following:

apksigner.jar verify --print-certs myApplication.apk

Answer 4

Try the following:

openssl pkcs7 -inform DER -in CERT.RSA -noout -print_certs -text

Answer 5

unzip -p Name-of-apk.apk META-INF/CERT.RSA | keytool -printcert is what I used .

It produces information such as the owner , issuer , serial number , valid through, certificate finger prints , signature algorithms and version .