Java版适用于PHP版3DES加密解密

hyperv

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import org.apache.log4j.Logger;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

/**
* Java版3DES加密解密，适用于PHP版3DES加密解密(PHP语言开发的MCRYPT_3DES算法、MCRYPT_MODE_ECB模式、PKCS7填充方式)
* @author G007N
*/
public class DesBase64Tool {
private static SecretKey secretKey = null;//key对象
private static Cipher cipher = null;  //私鈅加密对象Cipher
private static String keyString = "AKlMU89D3FchIkhKyMma6FiE";//密钥
private static Logger log = Logger.getRootLogger();

static{
try {
secretKey = new SecretKeySpec(keyString.getBytes(), "DESede");//获得密钥
/*获得一个私鈅加密类Cipher，DESede是算法，ECB是加密模式，PKCS5Padding是填充方式*/
cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
} catch (Exception e) {
log.error(e.getMessage(), e);
}
}

/**
* 加密
* @param message
* @return
*/
    public static String desEncrypt(String message) {
    String result = "";   //DES加密字符串
    String newResult = "";//去掉换行符后的加密字符串
    try {
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);//设置工作模式为加密模式，给出密钥
    byte[] resultBytes = cipher.doFinal(message.getBytes("UTF-8"));//正式执行加密操作
    BASE64Encoder enc = new BASE64Encoder();
result = enc.encode(resultBytes);//进行BASE64编码
newResult = filter(result);      //去掉加密串中的换行符
} catch (Exception e) {
log.error(e.getMessage(), e);
}
return newResult;
    }
   
/**
* 解密
* @param message
* @return
* @throws Exception
*/
    public static String desDecrypt(String message) throws Exception {
    String result = "";
    try {
            BASE64Decoder dec = new BASE64Decoder();
            byte[] messageBytes = dec.decodeBuffer(message);  //进行BASE64编码
            cipher.init(Cipher.DECRYPT_MODE, secretKey);      //设置工作模式为解密模式，给出密钥
            byte[] resultBytes = cipher.doFinal(messageBytes);//正式执行解密操作
            result = new String(resultBytes,"UTF-8");
} catch (Exception e) {
e.printStackTrace();
}
return result;
    }

/**
* 去掉加密字符串换行符
* @param str
* @return
*/
public static String filter(String str) {   
String output = "";   
StringBuffer sb = new StringBuffer();   
for (int i = 0; i < str.length(); i++) {   
int asc = str.charAt(i);   
if (asc != 10 && asc != 13) {
sb.append(str.subSequence(i, i+1));
}   
}   
output = new String(sb);   
return output;
}   

/**
* 加密解密测试
* @param args
*/
public static void main(String[] args) {
try {
String strText = "Hello world!";
String deseResult = desEncrypt(strText);//加密
System.out.println("加密结果："+deseResult);

String desdResult = desDecrypt(deseResult);//解密
System.out.println("解密结果："+desdResult);
} catch (Exception e) {
e.printStackTrace();
}
}
}