C# AES加密

 

/// <summary>
        ///  加密 参数：string
        /// </summary>
        /// <param name="strCon">加密内容</param>
        /// <param name="key">密钥</param>
        /// <returns>string：密文</returns>
        public static string Encrypt(string strCon, string key)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(strCon))
                {
                    return null;
                }

                byte[] byCon = Encoding.UTF8.GetBytes(strCon);
                var rm = new RijndaelManaged
                {
                    IV= Encoding.UTF8.GetBytes(key),
                    Key = Encoding.UTF8.GetBytes(key),
                    Mode = CipherMode.CBC,
                    Padding = PaddingMode.PKCS7
                };
                ICryptoTransform cTransform = rm.CreateEncryptor();
                byte[] resultArray = cTransform.TransformFinalBlock(byCon, 0, byCon.Length);
                return Convert.ToBase64String(resultArray, 0, resultArray.Length);
            }
            catch
            {
                return "";
            }
        }

        public static string Decrypt(string strCon, string key)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(strCon))
                {
                    return null;
                }

                byte[] byCon = Convert.FromBase64String(strCon);
                var rm = new RijndaelManaged
                {
                    IV = Encoding.UTF8.GetBytes(key),
                    Key = Encoding.UTF8.GetBytes(key),
                    Mode = CipherMode.CBC,
                    Padding = PaddingMode.PKCS7
                };
                ICryptoTransform cTransform = rm.CreateDecryptor();
                byte[] resultArray = cTransform.TransformFinalBlock(byCon, 0, byCon.Length);
                return Encoding.UTF8.GetString(resultArray);
            }
            catch
            {
                return "";
            }
        }