注: C#已亲测及做扩展, Java 部分未做验证
/// <summary>
/// 3DES加密解密
/// -----------------------------------------------------------
/// 说明:
/// 转载自网上http://bbs.csdn.net/topics/350158619
/// 并加以扩展
/// 修正:
/// 1. 修改正解密后出现 '\0'
/// 注: 1. 向量不能小于8位
/// 2. 明文末尾如果是带'\0'字符,则会一起去掉
/// -----------------------------------------------------------
/// 扩展人:Wuyf 11222337#qq.com
/// 日 期:2014-11-29
/// </summary>
C# 代码
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Security.Cryptography; using System.Text; using System.Web; namespace WuFrame.Tool { /// <summary> /// 3DES 加密解密 /// ----------------------------------------------------------- /// 说明: /// 转载自网上http://bbs.csdn.net/topics/350158619 /// 并加以扩展 /// 修正: /// 1. 修改正解密后出现 '\0' /// 注: 1. Key必须为24位 /// 2. 向量不能小于8位 /// 3. 明文末尾如果是带'\0'字符,则会一起去掉 /// ----------------------------------------------------------- /// 扩展人:Wuyf 11222337#qq.com /// 日 期:2014-11-29 /// </summary> public class Des3Tool { #region CBC模式** #region 扩展方法 /// <summary> /// 3DES 加密(字符串参数和返回值) /// </summary> /// <param name="key">密钥</param> /// <param name="iv">向量</param> /// <param name="data">明文</param> /// <param name="isRetBase64">true:返回base64,false:返回Utf8</param> /// <returns></returns> public static string Des3EncodeCBC(string key, string iv, string data) { string rtnResult = string.Empty; byte[] rtnValue = null; byte[] keyArr = Encoding.UTF8.GetBytes(key); byte[] ivArr = Encoding.UTF8.GetBytes(iv); byte[] dataArr = Encoding.UTF8.GetBytes(data); rtnValue = Des3EncodeCBC(keyArr, ivArr, dataArr); rtnResult = Convert.ToBase64String(rtnValue); return rtnResult; } /// <summary> /// 3DES 解密(字符串参数和返回值) /// </summary> /// <param name="key">密钥</param> /// <param name="iv">向量</param> /// <param name="data">明文</param> /// <returns></returns> public static string Des3DecodeCBC(string key, string iv, string dataEnBase64) { string rtnResult = string.Empty; byte[] rtnValue = null; byte[] keyArr = Encoding.UTF8.GetBytes(key); byte[] ivArr = Encoding.UTF8.GetBytes(iv); byte[] dataArr = Convert.FromBase64String(dataEnBase64); rtnValue = Des3DecodeCBC(keyArr, ivArr, dataArr); rtnResult = Encoding.UTF8.GetString(rtnValue).TrimEnd('\0'); // 去除多余空字符 return rtnResult; } /// <summary> /// 3DES 解密(字符串参数和返回值) /// </summary> /// <param name="key">密钥</param> /// <param name="iv">向量</param> /// <param name="data">明文</param> /// <returns></returns> public static string Des3DecodeCBC(string key, string iv, byte[] dataArr) { string rtnResult = string.Empty; byte[] rtnValue = null; byte[] keyArr = Encoding.UTF8.GetBytes(key); byte[] ivArr = Encoding.UTF8.GetBytes(iv); rtnValue = Des3DecodeCBC(keyArr, ivArr, dataArr); rtnResult = Encoding.UTF8.GetString(rtnValue).TrimEnd('\0'); // 去除多余空字符 return rtnResult; } #endregion #region 原加解密方法 /// <summary> /// DES3 CBC模式加密 /// </summary> /// <param name="key">密钥</param> /// <param name="iv">IV</param> /// <param name="data">明文的byte数组</param> /// <returns>密文的byte数组</returns> public static byte[] Des3EncodeCBC(byte[] key, byte[] iv, byte[] data) { //复制于MSDN try { // Create a MemoryStream. MemoryStream mStream = new MemoryStream(); TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider(); tdsp.Mode = CipherMode.CBC; //默认值 tdsp.Padding = PaddingMode.PKCS7; //默认值 // Create a CryptoStream using the MemoryStream // and the passed key and initialization vector (IV). CryptoStream cStream = new CryptoStream(mStream, tdsp.CreateEncryptor(key, iv), CryptoStreamMode.Write); // Write the byte array to the crypto stream and flush it. cStream.Write(data, 0, data.Length); cStream.FlushFinalBlock(); // Get an array of bytes from the // MemoryStream that holds the // encrypted data. byte[] ret = mStream.ToArray(); // Close the streams. cStream.Close(); mStream.Close(); // Return the encrypted buffer. return ret; } catch (CryptographicException e) { Console.WriteLine("A Cryptographic error occurred: {0}", e.Message); return null; } } /// <summary> /// DES3 CBC模式解密 /// </summary> /// <param name="key">密钥</param> /// <param name="iv">IV</param> /// <param name="data">密文的byte数组</param> /// <returns>明文的byte数组</returns> public static byte[] Des3DecodeCBC(byte[] key, byte[] iv, byte[] data) { try { // Create a new MemoryStream using the passed // array of encrypted data. MemoryStream msDecrypt = new MemoryStream(data); TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider(); tdsp.Mode = CipherMode.CBC; tdsp.Padding = PaddingMode.PKCS7; // Create a CryptoStream using the MemoryStream // and the passed key and initialization vector (IV). CryptoStream csDecrypt = new CryptoStream(msDecrypt, tdsp.CreateDecryptor(key, iv), CryptoStreamMode.Read); // Create buffer to hold the decrypted data. byte[] fromEncrypt = new byte[data.Length]; // Read the decrypted data out of the crypto stream // and place it into the temporary buffer. csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length); //Convert the buffer into a string and return it. return fromEncrypt; } catch (CryptographicException e) { Console.WriteLine("A Cryptographic error occurred: {0}", e.Message); return null; } } #endregion #endregion #region ECB模式 #region 不提供Iv(扩展方法) private static string ivDefault = "12345678"; /// <summary> /// 3DES 加密(字符串参数和返回值) /// </summary> /// <param name="key">密钥</param> /// <param name="iv">向量</param> /// <param name="data">明文</param> /// <param name="isRetBase64">true:返回base64,false:返回Utf8</param> /// <returns></returns> public static string Des3EncodeECB(string key, string data) { string rtnResult = string.Empty; byte[] rtnValue = null; byte[] keyArr = Encoding.UTF8.GetBytes(key); byte[] ivArr = Encoding.UTF8.GetBytes(ivDefault); byte[] dataArr = Encoding.UTF8.GetBytes(data); rtnValue = Des3EncodeCBC(keyArr, ivArr, dataArr); rtnResult = Convert.ToBase64String(rtnValue); return rtnResult; } /// <summary> /// 3DES 解密(字符串参数和返回值) /// </summary> /// <param name="key">密钥</param> /// <param name="iv">向量</param> /// <param name="data">明文</param> /// <returns></returns> public static string Des3DecodeECB(string key, string dataEnBase64) { string rtnResult = string.Empty; byte[] rtnValue = null; byte[] keyArr = Encoding.UTF8.GetBytes(key); byte[] ivArr = Encoding.UTF8.GetBytes(ivDefault); byte[] dataArr = Convert.FromBase64String(dataEnBase64); rtnValue = Des3DecodeCBC(keyArr, ivArr, dataArr); rtnResult = Encoding.UTF8.GetString(rtnValue).TrimEnd('\0'); // 去除多余空字符 return rtnResult; } /// <summary> /// 3DES 解密(字符串参数和返回值) /// </summary> /// <param name="key">密钥</param> /// <param name="iv">向量</param> /// <param name="data">明文</param> /// <returns></returns> public static string Des3DecodeECB(string key, byte[] dataArr) { string rtnResult = string.Empty; byte[] rtnValue = null; byte[] keyArr = Encoding.UTF8.GetBytes(key); byte[] ivArr = Encoding.UTF8.GetBytes(ivDefault); rtnValue = Des3DecodeECB(keyArr, ivArr, dataArr); rtnResult = Encoding.UTF8.GetString(rtnValue).TrimEnd('\0'); // 去除多余空字符 return rtnResult; } #endregion #region 提供Iv(扩展方法) /// <summary> /// 3DES 加密(字符串参数和返回值) /// </summary> /// <param name="key">密钥</param> /// <param name="iv">向量</param> /// <param name="data">明文</param> /// <param name="isRetBase64">true:返回base64,false:返回Utf8</param> /// <returns></returns> public static string Des3EncodeECB(string key, string iv, string data) { string rtnResult = string.Empty; byte[] rtnValue = null; byte[] keyArr = Encoding.UTF8.GetBytes(key); byte[] ivArr = Encoding.UTF8.GetBytes(iv); byte[] dataArr = Encoding.UTF8.GetBytes(data); rtnValue = Des3EncodeCBC(keyArr, ivArr, dataArr); rtnResult = Convert.ToBase64String(rtnValue); return rtnResult; } /// <summary> /// 3DES 解密(字符串参数和返回值) /// </summary> /// <param name="key">密钥</param> /// <param name="iv">向量</param> /// <param name="data">明文</param> /// <returns></returns> public static string Des3DecodeECB(string key, string iv, string dataEnBase64) { string rtnResult = string.Empty; byte[] rtnValue = null; byte[] keyArr = Encoding.UTF8.GetBytes(key); byte[] ivArr = Encoding.UTF8.GetBytes(iv); byte[] dataArr = Convert.FromBase64String(dataEnBase64); rtnValue = Des3DecodeCBC(keyArr, ivArr, dataArr); rtnResult = Encoding.UTF8.GetString(rtnValue).TrimEnd('\0'); // 去除多余空字符 return rtnResult; } /// <summary> /// 3DES 解密(字符串参数和返回值) /// </summary> /// <param name="key">密钥</param> /// <param name="iv">向量</param> /// <param name="data">明文</param> /// <returns></returns> public static string Des3DecodeECB(string key, string iv, byte[] dataArr) { string rtnResult = string.Empty; byte[] rtnValue = null; byte[] keyArr = Encoding.UTF8.GetBytes(key); byte[] ivArr = Encoding.UTF8.GetBytes(iv); rtnValue = Des3DecodeECB(keyArr, ivArr, dataArr); rtnResult = Encoding.UTF8.GetString(rtnValue).TrimEnd('\0'); // 去除多余空字符 return rtnResult; } #endregion #region 原加解密方法 /// <summary> /// DES3 ECB模式加密 /// </summary> /// <param name="key">密钥</param> /// <param name="iv">IV(当模式为ECB时，IV无用)</param> /// <param name="str">明文的byte数组</param> /// <returns>密文的byte数组</returns> public static byte[] Des3EncodeECB(byte[] key, byte[] iv, byte[] data) { try { // Create a MemoryStream. MemoryStream mStream = new MemoryStream(); TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider(); tdsp.Mode = CipherMode.ECB; tdsp.Padding = PaddingMode.PKCS7; // Create a CryptoStream using the MemoryStream // and the passed key and initialization vector (IV). CryptoStream cStream = new CryptoStream(mStream, tdsp.CreateEncryptor(key, iv), CryptoStreamMode.Write); // Write the byte array to the crypto stream and flush it. cStream.Write(data, 0, data.Length); cStream.FlushFinalBlock(); // Get an array of bytes from the // MemoryStream that holds the // encrypted data. byte[] ret = mStream.ToArray(); // Close the streams. cStream.Close(); mStream.Close(); // Return the encrypted buffer. return ret; } catch (CryptographicException e) { Console.WriteLine("A Cryptographic error occurred: {0}", e.Message); return null; } } /// <summary> /// DES3 ECB模式解密 /// </summary> /// <param name="key">密钥</param> /// <param name="iv">IV(当模式为ECB时，IV无用)</param> /// <param name="str">密文的byte数组</param> /// <returns>明文的byte数组</returns> public static byte[] Des3DecodeECB(byte[] key, byte[] iv, byte[] data) { try { // Create a new MemoryStream using the passed // array of encrypted data. MemoryStream msDecrypt = new MemoryStream(data); TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider(); tdsp.Mode = CipherMode.ECB; tdsp.Padding = PaddingMode.PKCS7; // Create a CryptoStream using the MemoryStream // and the passed key and initialization vector (IV). CryptoStream csDecrypt = new CryptoStream(msDecrypt, tdsp.CreateDecryptor(key, iv), CryptoStreamMode.Read); // Create buffer to hold the decrypted data. byte[] fromEncrypt = new byte[data.Length]; // Read the decrypted data out of the crypto stream // and place it into the temporary buffer. csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length); //Convert the buffer into a string and return it. return fromEncrypt; } catch (CryptographicException e) { Console.WriteLine("A Cryptographic error occurred: {0}", e.Message); return null; } } #endregion #endregion /// <summary> /// 类测试 /// </summary> public static void Test() { System.Text.Encoding utf8 = System.Text.Encoding.UTF8; // 扩展方法测试 string keyExt = "abcdefghijklmnopqrstuvwx"; string ivExt = "12345678"; string dataExt = "吴@#@\0\n"; // CBC 模式 string tmpEnCBC = Des3Tool.Des3EncodeCBC(keyExt, ivExt, dataExt); // 返回 base64 string tmpDeCBC = Des3Tool.Des3DecodeCBC(keyExt, ivExt, tmpEnCBC); // 返回 utf8格式字符串 System.Console.WriteLine(tmpEnCBC); System.Console.WriteLine(tmpDeCBC); System.Console.WriteLine(); // ECB 带 iv string tmpEnECB = Des3Tool.Des3EncodeECB(keyExt, ivExt, dataExt); // 返回 base64 string tmpDeECB = Des3Tool.Des3DecodeECB(keyExt, ivExt, tmpEnECB); // 返回 utf8格式字符串 System.Console.WriteLine(tmpEnECB); System.Console.WriteLine(tmpDeECB); System.Console.WriteLine(); // ECB 不带 iv string tmpEnECBNoIv = Des3Tool.Des3EncodeECB(keyExt, dataExt); // 返回 base64 string tmpDeECBNoIv = Des3Tool.Des3DecodeECB(keyExt, tmpEnECBNoIv); // 返回 utf8格式字符串 System.Console.WriteLine(tmpEnECBNoIv); System.Console.WriteLine(tmpDeECBNoIv); System.Console.WriteLine(); //key为abcdefghijklmnopqrstuvwx的Base64编码 byte[] key = Convert.FromBase64String("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4"); byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }; //当模式为ECB时，IV无用 byte[] data = utf8.GetBytes("中国ABCabc123"); System.Console.WriteLine("ECB模式:"); byte[] str1 = Des3Tool.Des3EncodeECB(key, iv, data); byte[] str2 = Des3Tool.Des3DecodeECB(key, iv, str1); System.Console.WriteLine(Convert.ToBase64String(str1)); System.Console.WriteLine(System.Text.Encoding.UTF8.GetString(str2)); System.Console.WriteLine(); System.Console.WriteLine("CBC模式:"); byte[] str3 = Des3Tool.Des3EncodeCBC(key, iv, data); byte[] str4 = Des3Tool.Des3DecodeCBC(key, iv, str3); System.Console.WriteLine(Convert.ToBase64String(str3)); System.Console.WriteLine(utf8.GetString(str4)); System.Console.WriteLine(); } } }
Java 代码
import java.security.Key; import javax.crypto.Cipher; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESedeKeySpec; import javax.crypto.spec.IvParameterSpec; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; public class Des3 { public static void main(String[] args) throws Exception { byte[] key=new BASE64Decoder().decodeBuffer("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4"); byte[] keyiv = { 1, 2, 3, 4, 5, 6, 7, 8 }; byte[] data="中国ABCabc123".getBytes("UTF-8"); System.out.println("ECB加密解密"); byte[] str3 = des3EncodeECB(key,data ); byte[] str4 = ees3DecodeECB(key, str3); System.out.println(new BASE64Encoder().encode(str3)); System.out.println(new String(str4, "UTF-8")); System.out.println(); System.out.println("CBC加密解密"); byte[] str5 = des3EncodeCBC(key, keyiv, data); byte[] str6 = des3DecodeCBC(key, keyiv, str5); System.out.println(new BASE64Encoder().encode(str5)); System.out.println(new String(str6, "UTF-8")); } /** * ECB加密,不要IV * @param key 密钥 * @param data 明文 * @return Base64编码的密文 * @throws Exception */ public static byte[] des3EncodeECB(byte[] key, byte[] data) throws Exception { Key deskey = null; DESedeKeySpec spec = new DESedeKeySpec(key); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede"); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, deskey); byte[] bOut = cipher.doFinal(data); return bOut; } /** * ECB解密,不要IV * @param key 密钥 * @param data Base64编码的密文 * @return 明文 * @throws Exception */ public static byte[] ees3DecodeECB(byte[] key, byte[] data) throws Exception { Key deskey = null; DESedeKeySpec spec = new DESedeKeySpec(key); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede"); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, deskey); byte[] bOut = cipher.doFinal(data); return bOut; } /** * CBC加密 * @param key 密钥 * @param keyiv IV * @param data 明文 * @return Base64编码的密文 * @throws Exception */ public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception { Key deskey = null; DESedeKeySpec spec = new DESedeKeySpec(key); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede"); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding"); IvParameterSpec ips = new IvParameterSpec(keyiv); cipher.init(Cipher.ENCRYPT_MODE, deskey, ips); byte[] bOut = cipher.doFinal(data); return bOut; } /** * CBC解密 * @param key 密钥 * @param keyiv IV * @param data Base64编码的密文 * @return 明文 * @throws Exception */ public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception { Key deskey = null; DESedeKeySpec spec = new DESedeKeySpec(key); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede"); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding"); IvParameterSpec ips = new IvParameterSpec(keyiv); cipher.init(Cipher.DECRYPT_MODE, deskey, ips); byte[] bOut = cipher.doFinal(data); return bOut; } }
