c#代码
- using System;
- using System.Security;
- using System.Security.Cryptography;
- using System.IO;
- using System.Text;
- using System.Threading;namespace WebApplication2
- {
- /// <summary>
- /// DES3 的摘要说明。
- /// </summary>
- public class DES3
- {
- public DES3()
- {
- }
- //密钥
- private const string sKey = "A3F2569DESJEIWBCJOTY45DYQWF68H1Y"; //矢量,矢量可以为空
- private const string sIV = "qcDY6X+aPLw="; //构造一个对称算法
- private SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
- #region public string EncryptString(string Value) /// 加密字符串
- /// 输入的字符串
- /// 加密后的字符串
- public string EncryptString(string Value) {
- ICryptoTransform ct;
- MemoryStream ms;
- CryptoStream cs;
- byte[] byt;
- mCSP.Key = Convert.FromBase64String(sKey);
- mCSP.IV = Convert.FromBase64String(sIV); //指定加密的运算模式
- mCSP.Mode = System.Security.Cryptography.CipherMode.ECB; //获取或设置加密算法的填充模式
- mCSP.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
- ct = mCSP.CreateEncryptor(mCSP.Key, mCSP.IV);
- byt = Encoding.UTF8.GetBytes(Value);
- ms = new MemoryStream();
- cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
- cs.Write(byt, 0, byt.Length);
- cs.FlushFinalBlock();
- cs.Close();
- return Convert.ToBase64String(ms.ToArray());
- } #endregion
- } }
java代码
- package des;import javax.crypto.Cipher;
- import javax.crypto.NoSuchPaddingException;
- import javax.crypto.SecretKey;
- import java.security.NoSuchAlgorithmException;
- import sun.misc.*;
- import java.io.IOException;
- import java.io.UnsupportedEncodingException;
- import javax.crypto.BadPaddingException;
- import javax.crypto.IllegalBlockSizeException;
- import javax.crypto.spec.SecretKeySpec;
- import java.security.*;
- import javax.crypto.SecretKeyFactory;
- import java.security.spec.*;
- import javax.crypto.spec.DESedeKeySpec;
- /**
- 解密
- */
- public class DES {
- private static String Algorithm = "DESede";//加密算法的名称
- private static Cipher c;//密码器
- private static byte[] cipherByte;
- private static SecretKey deskey;//密钥
- private static String keyString = "A3F2569DESJEIWBCJOTY45DYQWF68H1Y";//获得密钥的参数 //对base64编码的string解码成byte数组
- public byte[] deBase64(String parm) throws IOException {
- BASE64Decoder dec=new BASE64Decoder();
- byte[] dnParm = dec.decodeBuffer(parm);
- System.out.println(dnParm.length);
- System.out.println(dnParm);
- return dnParm;
- }
- //把密钥参数转为byte数组
- public byte[] dBase64(String parm) throws IOException {
- BASE64Decoder dec=new BASE64Decoder();
- byte[] dnParm = dec.decodeBuffer(parm);
- return dnParm;
- } /**
- * 对 Byte 数组进行解密
- * @param buff 要解密的数据
- * @return 返回加密后的 String
- */
- public static String createDecryptor(byte[] buff) throws
- NoSuchPaddingException, NoSuchAlgorithmException,
- UnsupportedEncodingException {
- try {
- c.init(Cipher.DECRYPT_MODE, deskey);//初始化密码器,用密钥deskey,进入解密模式
- cipherByte = c.doFinal(buff);
- }
- catch(java.security.InvalidKeyException ex){
- ex.printStackTrace();
- }
- catch(javax.crypto.BadPaddingException ex){
- ex.printStackTrace();
- }
- catch(javax.crypto.IllegalBlockSizeException ex){
- ex.printStackTrace();
- }
- return (new String(cipherByte,"UTF-8"));
- }
- public void getKey(String key) throws IOException, InvalidKeyException,
- InvalidKeySpecException {
- byte[] dKey = dBase64(key);
- try { deskey=new javax.crypto.spec.SecretKeySpec(dKey,Algorithm);
- c = Cipher.getInstance(Algorithm);
- }
- catch (NoSuchPaddingException ex) {
- }
- catch (NoSuchAlgorithmException ex) {
- }
- }
- public static void main(String args[]) throws IOException,
- NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeySpecException,
- InvalidKeyException, IOException {
- DES des = new DES();
- des.getKey(keyString);
- byte[] dBy = des.deBase64("1ZVasdJJco1qccDnnfQfb8QeaARxhkR6");
- String dStr = des.createDecryptor(dBy);
- System.out.println("解:"+dStr);
- }
- }
这个可以加解密,不限制加密字符长度