数据加密之SymmetricAlgorithm加密

  #region SymmetricAlgorithm加密
         /// <summary>
         /// 按指定对称算法、键和向量加密字符串
         /// </summary>
         public static byte[] Encrypt(string plainText, string algName, byte[] rgbKey, byte[] rgbIv)
         {
             var alg = SymmetricAlgorithm.Create(algName);
             var transform = alg.CreateEncryptor(rgbKey, rgbIv);
             var ms = new MemoryStream();
             var encStream = new CryptoStream(ms, transform, CryptoStreamMode.Write);
             var sw = new StreamWriter(encStream);
             sw.WriteLine(plainText);
             sw.Close();
             encStream.Close();
             var buffer = ms.ToArray();
             ms.Close();
             return buffer;
         }
         #endregion
         #region SymmetricAlgorithm解密
         /// <summary>
         /// 按指定对称算法、键和向量解密数据
         /// </summary>
         public static string Decrypt(byte[] cypherText, string algName, byte[] rgbKey, byte[] rgbIv)
         {
             var alg = SymmetricAlgorithm.Create(algName);
             var transform = alg.CreateDecryptor(rgbKey, rgbIv);
             var ms = new MemoryStream(cypherText);
             var encStream = new CryptoStream(ms, transform, CryptoStreamMode.Read);
             var sr = new StreamReader(encStream);
             var val = sr.ReadLine();
             sr.Close();
             encStream.Close();
             ms.Close();
             return val;
         }
         #endregion