资源简介
vpn代码
直接连接vpn
调用android代码实现。
【核心代码】
package vpn;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.math.BigInteger;
import java.util.Random;
import org.apache.commons.codec.binary.Base64;
public class MutualAuthentication {
//Based on Stamp Textbook, pg 323 Figure 9.12
public static BigInteger getNonce(String OddEven){
BigInteger bi;
BigInteger moduloResult = (OddEven.toLowerCase().equals("odd")) ? BigInteger.ONE : BigInteger.ZERO;
//System.out.println("moduloResult: " moduloResult); //testing
Boolean isCorrectNonce = false;
int bitLength = 64; //based on http://security.stackexchange.com/questions/1952/how-long-should-a-random-nonce-be
Random random = new Random();
bi = BigInteger.probablePrime(bitLength, random);
isCorrectNonce = bi.mod(new BigInteger("2")).equals(moduloResult);
if(moduloResult.equals(BigInteger.ZERO) && (isCorrectNonce == false)){
bi = bi.add(new BigInteger("1"));
}
//System.out.println("bi: " bi); //testing
return bi;
}
public static BigInteger IncrementNonce(BigInteger nonce) {
return nonce.add(new BigInteger("2")); //ensure nonce remains odd or even
}
public static String GetEncryptedMessage(String userIdentity, BigInteger nonce, coordinates computedG, String sharedKey){
aes AES = new aes(sharedKey);
return AES.encrypt(userIdentity computedG.toString() nonce.toString());
}
public static String DecryptChallenge(String challenge, String sharedKey){
aes AES = new aes(sharedKey);
System.out.println(challenge);
String message = AES.decrypt(challenge);
return message;
}
public static String GetChallenge(BigInteger nonce, String message){
return (message);
}
public static boolean muAuth(int type, ObjectOutputStream out, ObjectInputStream in, aes AES) throws ClassNotFoundException, IOException{
if (type == TwoWayVPN.SERVER){
String clientSentence;
boolean auth = false;
System.out.println("Start Mutual Authentication.");
//1) get I'm Alice from Client
clientSentence = (String) in.readObject();
System.out.println("From Client> " clientSentence);
//2) Send Challenge to Client: Encrypt Rb
BigInteger nonce_B = getNonce("Even");
// System.out.println("Nonce_B: " nonce_B); //testing
out.writeObject(nonce_B);
//3) Receive encrypted Rb and verify
String encryptedNonce_B = (String) in.readObject();
// System.out.println("From Client> EncryptedNonce_B: " encryptedNonce_B);
String answer = AES.decrypt(encryptedNonce_B);
if (!answer.equals(nonce_B.toString())) {
System.out.println("Client failed authentication");
return auth;
}
//4) Get Ra from Client, Return Encrypt Ra
String nonce_A = in.readObject().toString();
// System.out.println("From Client> Nonce_A: " nonce_A);
String encryptedNonce_A = AES.encrypt(nonce_A);
out.writeObject(encryptedNonce_A);
// System.out.println("To Client> EncryptedNonce_A: " encryptedNonce_A);
auth = true;
System.out.println("Authentication Success");
return auth;
}
else {
boolean auth = false;
System.out.println("Start Mutual Authentication.");
// 1) I'm Alice
out.writeObject("I'm Alice");
// 2) Get Rb from Server, Return Encrypt Rb
String nonce_B = in.readObject().toString();
//System.out.println("From Server> Nonce_B: " nonce_B);
String encryptedNounce_B = AES.encrypt(nonce_B);
out.writeObject(encryptedNounce_B);
//System.out.println("To Server> EncryptedNounce_B: " encryptedNounce_B);
// 3) Send Challenge to Server: Encrypt Ra
BigInteger nonce_A = getNonce("Odd");
//System.out.println("Nonce_A: " nonce_A);
out.writeObject(nonce_A);
//4) Receive encrypted Ra and verify
String encryptedNounce_A = (String) in.readObject();
//System.out.println("From Server> EncryptedNounce_A: " encryptedNounce_A);
String answer = AES.decrypt(encryptedNounce_A);
if (!answer.equals(nonce_A.toString())) {
System.out.println("Server failed authentication");
return auth;
}
auth = true;
System.out.println("Authentication Success");
return auth;
}
}
}
代码片段和文件信息
package vpn;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.Mac;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.base64;
public class aes {
private static String encryptKey;
/*public static void main（String args[]） {
aes t = new aes（“password92343456“）;
String encrypt = t.encrypt（“mypasswor42342dftgyhu“）;
System.out.println（“decrypted value:“ + t.decrypt（encrypt））;
}*/
public aes（String key）{
this.encryptKey = key;
}
public String computemac 属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2015-11-07 18:32 VPN-master\
文件 797 2015-10-22 13:33 VPN-master\.classpath
文件 467 2015-10-22 13:33 VPN-master\.gitignore
文件 555 2015-10-22 13:33 VPN-master\.project
目录 0 2015-11-07 18:32 VPN-master\.settings\
文件 736 2015-10-22 13:33 VPN-master\.settings\org.eclipse.jdt.core.prefs
文件 12 2015-10-22 13:33 VPN-master\README.md
目录 0 2015-11-07 18:32 VPN-master\bin\
目录 0 2015-11-07 18:32 VPN-master\bin\vpn\
文件 1423 2015-10-22 13:33 VPN-master\bin\vpn\Client.class
文件 1128 2015-10-22 13:33 VPN-master\bin\vpn\Server.class
文件 3052 2015-10-22 13:33 VPN-master\bin\vpn\VPN.class
文件 832 2015-10-22 13:33 VPN-master\pom.xm
目录 0 2015-11-07 18:32 VPN-master\src\
目录 0 2015-11-07 18:32 VPN-master\src\vpn\
文件 2256 2015-10-22 13:33 VPN-master\src\vpn\MessageAuthentication.java
文件 4446 2015-10-22 13:33 VPN-master\src\vpn\MutualAuthentication.java
文件 1070 2015-10-22 13:33 VPN-master\src\vpn\TwoWayVPN.java
文件 3601 2015-10-22 13:33 VPN-master\src\vpn\aes.java
文件 1390 2015-10-22 13:33 VPN-master\src\vpn\client.java
文件 268 2015-10-22 13:33 VPN-master\src\vpn\coordinates.java
文件 5113 2015-10-22 13:33 VPN-master\src\vpn\ecdh.java
文件 1263 2015-10-22 13:33 VPN-master\src\vpn\server.java
- 上一篇：android 天气预报
- 下一篇：ImageDemo网络图片查看
川公网安备 51152502000135号
评论
共有 条评论