Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.io.FileInputStream;
import java.security.Principal;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;

public class Main {
    public static void main(String args[]) throws Exception {
        Certificate[] certpath = new Certificate[args.length];
        CertificateFactory cf = CertificateFactory.getInstance("X.509");

        for (int i = 0; i < args.length; i++) {
            FileInputStream in = new FileInputStream(args[i]);
            certpath[i] = cf.generateCertificate(in);
        }
        for (int i = 0; i < certpath.length - 1; i++) {
            Principal issuer = ((X509Certificate) certpath[i]).getIssuerDN();
            Principal subject = ((X509Certificate) certpath[i + 1]).getSubjectDN();
            if (!issuer.equals(subject)) {
                System.out.println("in " + i + " issuer is " + issuer);
                System.out.println("But in " + (i + 1));
                System.out.println("subject is " + subject);
                break;
            }
        }
    }
}