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android - Getting certificate details from an apk

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 certificates and I am trying to group them based on their certificate.

I can get the certificate expiry details using the jarsigner and complete my task but I was curious if I can get any more details or extract the public key ( I believe it stored in META-INF/cert.RSA but it's not readable )

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Try the following:

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

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