using System;

using System.Collections.Generic;

using System.IO;

using System.Security.Cryptography;

using System.Text;

​

public class Program

{

     public class CryptoEngine  

    {  

        public static string AESDecrypt(string data, string key)

        {

            CryptoStream cryptoStream = null;

            MemoryStream mStream = null;

            RijndaelManaged aes = null;

​

            try

            {

                Byte[] encryptedBytes = Convert.FromBase64String(data);

                Byte[] bKey = new Byte[32];

                Array.Copy(Encoding.UTF8.GetBytes(key.PadRight(bKey.Length)), bKey, bKey.Length);

​

                mStream = new MemoryStream(encryptedBytes);

                //mStream.Write( encryptedBytes, 0, encryptedBytes.Length );  

                //mStream.Seek( 0, SeekOrigin.Begin );  

                aes = new RijndaelManaged();

                aes.Mode = CipherMode.ECB;

                aes.Padding = PaddingMode.PKCS7;

                aes.KeySize = 128;

                aes.Key = bKey;

                //aes.IV = _iV;  

                cryptoStream = new CryptoStream(mStream, aes.CreateDecryptor(), CryptoStreamMode.Read);

​

                byte[] tmp = new byte[encryptedBytes.Length + 32];

                int len = cryptoStream.Read(tmp, 0, encryptedBytes.Length + 32);

                byte[] ret = new byte[len];

                Array.Copy(tmp, 0, ret, 0, len);

​

                return Encoding.UTF8.GetString(ret);

            }

            catch (Exception ea)

            {

                throw new Exception("解密失败", ea);

            }

            finally

            {

                cryptoStream.Close();

                mStream.Close();

                aes.Clear();

            }

        }

         public static string AESEncrypt(string data, string key)

        {

            MemoryStream mStream = new MemoryStream();

            RijndaelManaged aes = new RijndaelManaged();

​

            byte[] plainBytes = Encoding.UTF8.GetBytes(data);

            Byte[] bKey = new Byte[32];

            Array.Copy(Encoding.UTF8.GetBytes(key.PadRight(bKey.Length)), bKey, bKey.Length);

​

            aes.Mode = CipherMode.ECB;

            aes.Padding = PaddingMode.PKCS7;

            aes.KeySize = 128;

            //aes.Key = _key;  

            aes.Key = bKey;

            //aes.IV = _iV;  

            CryptoStream cryptoStream = new CryptoStream(mStream, aes.CreateEncryptor(), CryptoStreamMode.Write);

            try

            {

                cryptoStream.Write(plainBytes, 0, plainBytes.Length);

                cryptoStream.FlushFinalBlock();

                return Convert.ToBase64String(mStream.ToArray());

            }

            finally

            {

                cryptoStream.Close();

                mStream.Close();

                aes.Clear();

            }

        }

        public static string ToBase64(string data)

        {

            var arry = Encoding.UTF8.GetBytes(data);

​

            return Convert.ToBase64String(arry);

        }

    }  

    public static void Main()

    {

        string body =@"{

          'loadInNo': 'RV2019070001',               

          'supplier': 'DUZON',               

          'supplierAddress': '北京',        

          'supplierContactInfo': '010-64391991',    

          'destination': '深圳',             

          'dateOfArrival': '20190705',          

          'transportType': 'TRUCK',          

          'items': [

            {

              'poNo': 'PO201907001',                

              'items': [

                {

                  'materielCode': 'A001',    

                  'materielName': '设备1',    

                  'category': '设备',        

                  'qty': '10',             

                  'packageQty': 1              

                },

                 {

                  'materielCode': '设备2',    

                  'materielName': 'MACI2',    

                  'category': '设备',        

                  'qty': '10',             

                  'packageQty': 1              

                }

              ]

            }

          ]

        }" ;

        string base64body = CryptoEngine.ToBase64(body);

        string key = "53802cc22bed11e897af000c297d9098";

        string en = CryptoEngine.AESEncrypt(base64body, key);  

        string de = CryptoEngine.AESDecrypt(en, key);  

        Console.WriteLine("body : "+body);

        Console.WriteLine("Base64 body : "+base64body);

        Console.WriteLine("Encrypted str1 : "+en);

        //Console.WriteLine("Decrypted str1 : "+de);

​

    }

}