private void print_https_cert(HttpsURLConnection con) {
if (con != null) {
try {
System.out.println("Response Code : " + con.getResponseCode());
System.out.println("Cipher Suite : " + con.getCipherSuite());
System.out.println("\n");
Certificate[] certs = con.getServerCertificates();
for (Certificate cert : certs) {
System.out.println("Cert Type : " + cert.getType());
System.out.println("Cert Hash Code : " + cert.hashCode());
System.out.println("Cert Public Key Algorithm : " + cert.getPublicKey().getAlgorithm());
System.out.println("Cert Public Key Format : " + cert.getPublicKey().getFormat());
System.out.println("\n");
}
} catch (SSLPeerUnverifiedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private String getHttpsCertificateInformation(HttpsURLConnection con) {
if (con != null) {
StringBuilder sb = new StringBuilder();
try {
sb.append("\nResponse Code : ");
sb.append(con.getResponseCode());
sb.append("\nCipher Suite : ");
sb.append(con.getCipherSuite());
sb.append("\n");
Certificate[] certs = con.getServerCertificates();
for (Certificate cert : certs) {
sb.append("\nCert Type : ");
sb.append(cert.getType());
sb.append("\nCert Hash Code : ");
sb.append(cert.hashCode());
sb.append("\nCert Public Key Algorithm : ");
sb.append(cert.getPublicKey().getAlgorithm());
sb.append("\nCert Public Key Format : ");
sb.append(cert.getPublicKey().getFormat());
sb.append("\n");
}
} catch (IOException e) {
return "Error while retrieving certificate information: " + e.getMessage();
}
return sb.toString();
}
return "Given connection was null!";
}
