package dk.cbs.archi.libkeystore;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

public class KeyStoreInterface {

	private String path;
	private String password;
	
	public KeyStoreInterface() {
		this("", "");
	}

	public KeyStoreInterface(String path) {
		this(path, "");
	}

	public KeyStoreInterface(String path, String password) {
		this.path = path;
		this.password = password;
	}
	
	/**
	 * 
	 * @param keyAlias
	 * @param password
	 * @throws Exception KeyStoreException, NoSuchAlgorithmException, CertificateException, IOException, UnrecoverableKeyException
	 */
	public void getKey(String keyAlias, String password) throws Exception {
		KeyStore ks = KeyStore.getInstance("PKCS12");
		FileInputStream fis = new FileInputStream(path);
		ks.load(fis, this.password.toCharArray());
		if (ks.containsAlias(keyAlias)) {
			//KeyStore.PrivateKeyEntry pkEntry = (KeyStore.PrivateKeyEntry)
			//        ks.getEntry("privateKeyAlias", password);
			//PrivateKey myPrivateKey = pkEntry.getPrivateKey();
			PrivateKey key = (PrivateKey) ks.getKey(keyAlias, null);
			if (key != null)
				System.out.println(key.getFormat());
			X509Certificate certificate = (X509Certificate) ks.getCertificate(keyAlias);
			System.out.println(certificate.toString());
		}
	}
	
	public static void main(String[] args) {
		KeyStoreInterface ksi = new KeyStoreInterface("/home/mir/git/libkeystore/keystore.jks", "changeit");
		try {
			ksi.getKey("mykey", "password");
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}