Get the certificate expiration date of an application using codesign on mac?
The selected answer did not quite work for me, but a slight variation found here using openssl
did the trick. In short,
codesign -dvvvv --extract-certificates /Applications/Example.app
openssl x509 -inform DER -in codesign0 -text
Use codesign to extract the certificates to the current directory:
codesign --display --extract-certificates /Applications/Example.app
You can then use Quick Look to view them:
qlmanage -c public.x509-certificate -p codesign*