public static class MyEncryption{#region Md5加密/// <summary>/// 使用MD5加密/// </summary>/// <param name="str">需要加密的数据。</param>/// <param name="kind">加密类型：1-普通加密；2-密码加密</param>/// <returns></returns>public static string EncryptMD5(this string source, int kind = 2){string str = "";byte[] data = Encoding.Unicode.GetBytes(source.ToCharArray());try{if (kind == 1)//1代表加密Byte[]数组{byte[] result = MakeMD5(data);string sResut = Encoding.Unicode.GetString(result);str = sResut;}else{//作为密码方式加密str = FormsAuthentication.HashPasswordForStoringInConfigFile(source, "MD5");}return str;}catch (Exception e){LogException.WriteLog(e, "加密出错");return null;}}#endregion#region base64加密解密/// <summary>/// 转换为Base64编码字符/// </summary>/// <param name="source"></param>/// <returns></returns>public static string EncryptBase64(this string source){if (string.IsNullOrEmpty(source)){LogException.WriteLog(null, "");return null;}else{try{//将字符串转换成UTF-8编码的字节数组byte[] buffer = Encoding.UTF8.GetBytes(source);//将UTF-8编码的字节数组转换成Base64编码的字符串string result = Convert.ToBase64String(buffer);return result;}catch (Exception e){LogException.WriteLog(e, "加密出错");return null;}}}/// <summary>/// 将Base64编码字符转换为字符/// </summary>/// <param name="result"></param>/// <returns></returns>public static string DecryptBase64(this string result){if (string.IsNullOrEmpty(result)){LogException.WriteLog(null, "加密出错");return null;}else{try{//将字符串转换成Base64编码的字节数组byte[] buffer = Convert.FromBase64String(result);//将字节数组转换成UTF-8编码的字符串string source = Encoding.UTF8.GetString(buffer);return source;}catch (Exception e){LogException.WriteLog(e, "加密出错");return null;}}}#endregion#region DES加密解密/// <summary>/// DES加密/// </summary>/// <param name="source">加密数据</param>/// <param name="key">8位字符的密钥字符串</param>/// <param name="iv">8位字符的初始化向量字符串</param>/// <returns></returns>public static string EncryptDES(this string source, string key, string iv){byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(key);byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(iv);try{DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();int i = cryptoProvider.KeySize;MemoryStream ms = new MemoryStream();CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);StreamWriter sw = new StreamWriter(cst);sw.Write(source);sw.Flush();cst.FlushFinalBlock();sw.Flush();return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);}catch (Exception e){LogException.WriteLog(e, "加密出错");return null;}}/// <summary>/// DES解密/// </summary>/// <param name="result">解密数据</param>/// <param name="key">8位字符的密钥字符串(需要和加密时相同)</param>/// <param name="iv">8位字符的初始化向量字符串(需要和加密时相同)</param>/// <returns></returns>public static string DecryptDES(this string result, string key, string iv){byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(key);byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(iv);byte[] byEnc;try{byEnc = Convert.FromBase64String(result);DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();MemoryStream ms = new MemoryStream(byEnc);CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);StreamReader sr = new StreamReader(cst);return sr.ReadToEnd();}catch (Exception e){LogException.WriteLog(e, "加密出错");return null;}}/// <summary>/// DES加密/// </summary>/// <param name="source">解密数据</param>/// <param name="iv">8位字符的初始化向量字符串</param>/// <returns></returns>public static string EncryptDES(this string source, string iv){return EncryptDES(source, "MHAFU365", iv);}/// <summary>/// DES解密/// </summary>/// <param name="result">解密数据</param>/// <param name="iv">8位字符的初始化向量字符串</param>/// <returns></returns>public static string DecryptDES(this string result, string iv){return DecryptDES(result, "MHAFU365", iv);}#endregion#region TripleDESC加密解密#region 字符/// <summary> /// 使用给定密钥加密 /// </summary> /// <param name="source">原始文字</param> /// <param name="key">密钥</param> /// <param name="encoding">字符编码方案</param> /// <returns>密文</returns> public static string EncryptTripleDESC(this string source, string key){byte[] buff = System.Text.Encoding.Default.GetBytes(source);byte[] kb = System.Text.Encoding.Default.GetBytes(key);return Convert.ToBase64String(EncryptTripleDESC(buff, kb));}/// <summary> /// 使用给定密钥解密 /// </summary> /// <param name="result">密文</param> /// <param name="key">密钥</param> /// <param name="encoding">字符编码方案</param> /// <returns>明文</returns> public static string DecryptTripleDESC(this string result, string key, Encoding encoding){byte[] buff = Convert.FromBase64String(result);byte[] kb = System.Text.Encoding.Default.GetBytes(key);return encoding.GetString(DecryptTripleDESC(buff, kb));}/// <summary> /// 使用缺省密钥字符串加密 /// </summary> /// <param name="source">明文</param> /// <returns>密文</returns> public static string EncryptTripleDESC(this string source){return EncryptTripleDESC(source, "HAFU365");}/// <summary> /// 使用缺省密钥解密 /// </summary> /// <param name="result">密文</param> /// <returns>明文</returns> public static string DecryptTripleDESC(this string result){return DecryptTripleDESC(result, "HAFU365", System.Text.Encoding.Default);}/// <summary> /// 使用给定密钥加密 /// </summary> /// <param name="source">原始数据</param> /// <returns>密文</returns> public static byte[] EncryptTripleDESC(this byte[] source){byte[] key = System.Text.Encoding.Default.GetBytes("HAFU@365");return EncryptTripleDESC(source, key);}/// <summary> /// 使用缺省密钥解密数据 /// </summary> /// <param name="result">密文</param> /// <returns>明文</returns> public static byte[] DecryptTripleDESC(this byte[] result){byte[] key = System.Text.Encoding.Default.GetBytes("HAFU@365");return DecryptTripleDESC(result, key);}#endregion#region 字节数组/// <summary> /// 使用给定密钥加密 /// </summary> /// <param name="source">明文</param> /// <param name="key">密钥</param> /// <returns>密文</returns> public static byte[] EncryptTripleDESC(this byte[] source, byte[] key){try{TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();des.Key = MakeMD5(key);des.Mode = CipherMode.ECB;return des.CreateEncryptor().TransformFinalBlock(source, 0, source.Length);}catch (Exception e){LogException.WriteLog(e, "加密出错");return null;}}/// <summary> /// 使用给定密钥解密数据 /// </summary> /// <param name="result">密文</param> /// <param name="key">密钥</param> /// <returns>明文</returns> public static byte[] DecryptTripleDESC(this byte[] result, byte[] key){try{TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();des.Key = MakeMD5(key);des.Mode = CipherMode.ECB;return des.CreateDecryptor().TransformFinalBlock(result, 0, result.Length);}catch (Exception e){LogException.WriteLog(e, "加密出错");return null;}}#endregion#endregion#region 生成MD5摘要/// <summary> /// 生成MD5摘要 /// </summary> /// <param name="original">数据源</param> /// <returns>摘要</returns> private static byte[] MakeMD5(byte[] original){MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();byte[] keyhash = hashmd5.ComputeHash(original);hashmd5 = null;return keyhash;}#endregion
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