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import java.io.FileInputStream;
import java.math.BigInteger;
import java.security.PublicKey;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
public class MainClass {
public static void main(String args[]) throws Exception {
CertificateFactory cf = CertificateFactory.getInstance("X.509");
FileInputStream in = new FileInputStream(args[0]);
java.security.cert.Certificate c = cf.generateCertificate(in);
in.close();
X509Certificate t = (X509Certificate) c;
System.out.println(t.getVersion());
System.out.println(t.getSerialNumber().toString(16));
System.out.println(t.getSubjectDN());
System.out.println(t.getIssuerDN());
System.out.println(t.getNotBefore());
System.out.println(t.getNotAfter());
System.out.println(t.getSigAlgName());
byte[] sig = t.getSignature();
System.out.println(new BigInteger(sig).toString(16));
PublicKey pk = t.getPublicKey();
byte[] pkenc = pk.getEncoded();
for (int i = 0; i < pkenc.length; i++) {
System.out.print(pkenc[i] + ",");
}
}
}
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