This is tool to dump APK/JAR signature. Remarkable point is that you can specify folder of pem files. And this tool result will print with the file name as human understandable signature name.
% ruby list-apk-signature.rb --help
Usage: an apkFile or folder storing apks
-p, --pemFolder= Specify .pem file folder (You can specify multiple paths with ,)
-s, --useSHA128 Use SHA128 fingerprint instead of SHA256
-m, --mode= Output mode:per-signature or per-file default:per-file
-v, --verbose Enable verbose status output (default:false)
% ruby list-apk-signature.rb -p ~/work/s/build/make/target/product/security .
{ platform : "xxxx.apk" },
{ "aa:bb:cc:dd:ee:ff:..snip.." : "yyy.apk" },
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