这里贴出来的是可通用的C#与jav的DES加密类,希望对大家管用直接复制即可用
C#DES加密解密类
- ///<summary><![CDATA[加密解密帮助类]]></summary>
- public class Help_Encrypt
- {
- ///<summary><![CDATA[字符串DES加密函数]]></summary>
- ///<param name="str"><![CDATA[被加密字符串 ]]></param>
- ///<param name="key"><![CDATA[密钥 ]]></param>
- ///<returns><![CDATA[加密后字符串]]></returns>
- public static string Encode(string str, string key)
- {
- try
- {
- DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
- provider.Key = Encoding.ASCII.GetBytes(key.Substring(0, 8));
- provider.IV = Encoding.ASCII.GetBytes(key.Substring(0, 8));
- byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(str);
- MemoryStream stream = new MemoryStream();
- CryptoStream stream2 = new CryptoStream(stream, provider.CreateEncryptor(), CryptoStreamMode.Write);
- stream2.Write(bytes, 0, bytes.Length);
- stream2.FlushFinalBlock();
- StringBuilder builder = new StringBuilder();
- foreach (byte num in stream.ToArray())
- {
- builder.AppendFormat("{0:X2}", num);
- }
- stream.Close();
- return builder.ToString();
- }
- catch (Exception) { return "xxxx"; }
- }
- ///<summary><![CDATA[字符串DES解密函数]]></summary>
- ///<param name="str"><![CDATA[被解密字符串 ]]></param>
- ///<param name="key"><![CDATA[密钥 ]]></param>
- ///<returns><![CDATA[解密后字符串]]></returns>
- public static string Decode(string str, string key)
- {
- try
- {
- DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
- provider.Key = Encoding.ASCII.GetBytes(key.Substring(0, 8));
- provider.IV = Encoding.ASCII.GetBytes(key.Substring(0, 8));
- byte[] buffer = new byte[str.Length / 2];
- for (int i = 0; i < (str.Length / 2); i++)
- {
- int num2 = Convert.ToInt32(str.Substring(i * 2, 2), 0x10);
- buffer[i] = (byte)num2;
- }
- MemoryStream stream = new MemoryStream();
- CryptoStream stream2 = new CryptoStream(stream, provider.CreateDecryptor(), CryptoStreamMode.Write);
- stream2.Write(buffer, 0, buffer.Length);
- stream2.FlushFinalBlock();
- stream.Close();
- return Encoding.GetEncoding("GB2312").GetString(stream.ToArray());
- }
- catch (Exception) { return ""; }
- }
- }
- JAVADES加密解密类
- package com.bgxt.messages;
- import java.io.UnsupportedEncodingException;
- import java.security.*;
- import javax.crypto.Cipher;
- import javax.crypto.SecretKey;
- import javax.crypto.SecretKeyFactory;
- import javax.crypto.spec.DESKeySpec;
- import javax.crypto.spec.IvParameterSpec;
- /**
- * 字符串工具集合
- * @author Liudong
- */
- public class StringUtils {
- private static final String PASSWORD_CRYPT_KEY = XmlUtil.getConfig().getPasswdKey().substring(0,8);
- //private final static String DES = "DES";
- //private static final byte[] desKey;
- //解密数据
- public static String decrypt(String message,String key) throws Exception {
- byte[] bytesrc =convertHexString(message);
- Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
- DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));
- SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
- SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
- IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
- cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);
- byte[] retByte = cipher.doFinal(bytesrc);
- return new String(retByte);
- }
- public static byte[] encrypt(String message, String key)
- throws Exception {
- Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
- DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));
- SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
- SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
- IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
- cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
- return cipher.doFinal(message.getBytes("UTF-8"));
- }
- public static String encrypt(String value){
- String result="";
- try{
- value=java.net.URLEncoder.encode(value, "utf-8");
- result=toHexString(encrypt(value, PASSWORD_CRYPT_KEY)).toUpperCase();
- }catch(Exception ex){
- ex.printStackTrace();
- return "";
- }
- return result;
- }
- public static byte[] convertHexString(String ss)
- {
- byte digest[] = new byte[ss.length() / 2];
- for(int i = 0; i < digest.length; i++)
- {
- String byteString = ss.substring(2 * i, 2 * i + 2);
- int byteValue = Integer.parseInt(byteString, 16);
- digest[i] = (byte)byteValue;
- }
- return digest;
- }
- public static String toHexString(byte b[]) {
- StringBuffer hexString = new StringBuffer();
- for (int i = 0; i < b.length; i++) {
- String plainText = Integer.toHexString(0xff & b[i]);
- if (plainText.length() < 2)
- plainText = "0" + plainText;
- hexString.append(plainText);
- }
- return hexString.toString();
- }
- public static void main(String[] args) throws Exception {
- String value="01";
- System.out.println("加密数据:"+value);
- System.out.println("密码为:"+XmlUtil.getConfig().getPasswdKey());
- String a=encrypt( value);
- System.out.println("加密后的数据为:"+a);
- }
- }