sslcontextfactory.java

这是一个以JAVA编写的程序,本人还没有试过,是一个简单的温度控制系统

package net.sf.dz.util;

import java.io.File;
import java.io.FileInputStream;
import java.security.KeyStore;
import java.security.SecureRandom;
import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;

/**
 * A utility class to simplify creation of {@link SSLContext SSLContext}.
 *
 * @author Copyright &copy; <a href="mailto:[e-mail]">Vadim Tkachenko</a> 2001
 * @version $Id: SSLContextFactory.java,v 1.2 2004/02/29 18:16:43 vtt Exp $
 */
public class SSLContextFactory {

    /**
     * Create an SSL context object with default options.
     *
     * The SSL context is created with a protocol <code>TLS</code>, keystore
     * located at <code>~/.keystore</code>, and a given keystore password.
     *
     * @param password Keystore password.
     */
    public static SSLContext createContext(String password) throws Throwable {
    
        return createContext("TLS",
                             System.getProperty("user.home") + File.separator + ".keystore",
                             password);
    }

    /**
     * Create an SSL context object.
     *
     * @param protocol Secure protocol. Values that are known to work are:
     * <code>SSLv3</code>, <code>TLS</code>.
     *
     * @param keyStoreName Keystore file name.
     *
     * @param password Keystore password.
     */
    public static SSLContext createContext(String protocol, String keyStoreName, String password) throws SSLException {
    
        try {
    
            SecureRandom random = SecureRandom.getInstance("SHA1PRNG", "SUN");
            SSLContext ctx = SSLContext.getInstance(protocol);
            
            if ( password == null ) {
            
                // Whatever...
                
                password = "";
            }
            
            char[] passwordArray = new char[password.length()];
            
            for ( int idx = 0; idx < password.length(); idx++ ) {
            
                passwordArray[idx] = password.charAt(idx);
            }
            
            FileInputStream keyStoreFile = new FileInputStream(keyStoreName);
            KeyStore ks = KeyStore.getInstance("JKS");

            ks.load(keyStoreFile, null);

            String keyManagementAlgorithm="SunX509";
            KeyManagerFactory km = KeyManagerFactory.getInstance(keyManagementAlgorithm);
            km.init(ks , passwordArray);

            KeyManager[] keyManagerSet = km.getKeyManagers();

            for (int i = 0; i < keyManagerSet.length; i++) {
            
                //System.err.println("KeyManager " + keyManagerSet[i]);
            }

            TrustManagerFactory tmFactory = TrustManagerFactory.getInstance(keyManagementAlgorithm);

            tmFactory.init(ks);

            TrustManager[] trustManagerSet = tmFactory.getTrustManagers();

            for (int i=0; i < trustManagerSet.length; i++) {
            
                //System.err.println("TrustManager " + trustManagerSet[i]);
            }
            
            ctx.init(keyManagerSet, trustManagerSet, random);
            
            return ctx;
            
        } catch ( Throwable t ) {
        
            SSLException ex = new SSLException("Can't create secure connection (SSLContext)");
            
            ex.initCause(t);
            
            throw ex;
        }
    }
}