/// <summary>/// AESRijndael/// </summary>public class AESRijndael{/// <summary>/// 检验密钥是否有效长度【16|24|32】/// </summary>/// <param name="key">密钥</param>/// <returns>bool</returns>public static bool CheckRijndaelKey(string key){if (string.IsNullOrWhiteSpace(key))return false;if (16.Equals(key.Length) || 24.Equals(key.Length) || 32.Equals(key.Length))return true;elsereturn false;}/// <summary>/// 检验向量是否有效长度【16】/// </summary>/// <param name="iv">向量</param>/// <returns>bool</returns>public static bool CheckRijndaelIV(string iv){if (string.IsNullOrWhiteSpace(iv))return false;if (16.Equals(iv.Length))return true;elsereturn false;}/// <summary>/// Rijndael加密/// </summary>/// <param name="data">被加密的明文</param>/// <param name="dataEncoding">要加密字符串加载时编码方式</param>  /// <param name="key">密钥</param>/// <param name="vector">向量</param> /// <param name="cipherMode">对称算法的运算模式</param>  /// <param name="paddingMode">对称算法中使用的填充模式</param>  /// <returns>返回Base64String密文</returns>public static string RijndaelEncrypt(string data, Encoding dataEncoding, string key, string vector, CipherMode cipherMode = CipherMode.CBC, PaddingMode paddingMode = PaddingMode.PKCS7){return RijndaelEncrypt(dataEncoding.GetBytes(data), key, vector, cipherMode, paddingMode);}/// <summary>/// Rijndael加密/// </summary>/// <param name="dataBytes">被加密的明文</param>/// <param name="key">密钥</param>/// <param name="vector">向量</param> /// <param name="cipherMode">对称算法的运算模式</param>  /// <param name="paddingMode">对称算法中使用的填充模式</param>  /// <returns>返回Base64String密文</returns>public static string RijndaelEncrypt(byte[] dataBytes, string key, string vector, CipherMode cipherMode = CipherMode.CBC, PaddingMode paddingMode = PaddingMode.PKCS7){byte[] cryptoBytes = null;try{using (RijndaelManaged aes = new RijndaelManaged()){aes.Key = Encoding.UTF8.GetBytes(key);aes.IV = Encoding.UTF8.GetBytes(vector);aes.Mode = cipherMode;aes.Padding = paddingMode;using (MemoryStream ms = new MemoryStream()){using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write)){cs.Write(dataBytes, 0, dataBytes.Length);cs.FlushFinalBlock();cryptoBytes = ms.ToArray();}}}}catch{cryptoBytes = null;}return Convert.ToBase64String(cryptoBytes);}/// <summary>/// Rijndael解密/// </summary>/// <param name="data">被解密的密文</param>/// <param name="dataEncoding">解密字符串返回的编码方式</param>  /// <param name="key">密钥</param>/// <param name="vector">向量</param> /// <param name="cipherMode">对称算法的运算模式</param>  /// <returns>返回指定编码明文</returns>public static string RijndaelDecrypt(string data, Encoding dataEncoding, string key, string vector, CipherMode cipherMode = CipherMode.CBC, PaddingMode paddingMode = PaddingMode.PKCS7){return dataEncoding.GetString(RijndaelDecrypt(data, key, vector, cipherMode, paddingMode));}/// <summary>/// Rijndael解密/// </summary>/// <param name="data">被解密的密文</param>/// <param name="key">密钥</param>/// <param name="vector">向量</param> /// <param name="cipherMode">对称算法的运算模式</param>  /// <param name="paddingMode">对称算法中使用的填充模式</param> /// <returns>返回指定编码明文</returns>public static byte[] RijndaelDecrypt(string data, string key, string vector, CipherMode cipherMode = CipherMode.CBC, PaddingMode paddingMode = PaddingMode.PKCS7){byte[] dataBytes = Convert.FromBase64String(data);byte[] cryptoBytes = null;try{using (RijndaelManaged aes = new RijndaelManaged()){aes.Key = Encoding.UTF8.GetBytes(key);aes.IV = Encoding.UTF8.GetBytes(vector);aes.Mode = cipherMode;aes.Padding = paddingMode;using (MemoryStream ms = new MemoryStream(dataBytes)){using (CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Read)){using (MemoryStream originalMemory = new MemoryStream()){byte[] bufferBytes = new byte[1024];int bytesRead = 0;while ((bytesRead = cs.Read(bufferBytes, 0, bufferBytes.Length)) > 0){originalMemory.Write(bufferBytes, 0, bytesRead);}cryptoBytes = originalMemory.ToArray();}}}}}catch (Exception ex){cryptoBytes = null;}return cryptoBytes;}}