diff --git a/src/GBNewEnergy.Protocol/GBNewEnergy.Protocol.csproj b/src/GBNewEnergy.Protocol/GBNewEnergy.Protocol.csproj
index 58b2083..09a6046 100644
--- a/src/GBNewEnergy.Protocol/GBNewEnergy.Protocol.csproj
+++ b/src/GBNewEnergy.Protocol/GBNewEnergy.Protocol.csproj
@@ -9,6 +9,8 @@
     <Compile Remove="IBuffer.cs" />
     <Compile Remove="IBuffered.cs" />
     <Compile Remove="NEDownStreamBase.cs" />
+    <Compile Remove="NEEncryptFactory.cs" />
+    <Compile Remove="NEEncrypts\NEAES128EncryptImpl_NetCore2.cs" />
     <Compile Remove="NEHeader.cs" />
     <Compile Remove="NEUpStreamBase.cs" />
   </ItemGroup>
diff --git a/src/GBNewEnergy.Protocol/NEEncryptFactory.cs b/src/GBNewEnergy.Protocol/NEEncryptFactory.cs
index 029b40a..cf18c6a 100644
--- a/src/GBNewEnergy.Protocol/NEEncryptFactory.cs
+++ b/src/GBNewEnergy.Protocol/NEEncryptFactory.cs
@@ -17,11 +17,7 @@ namespace GBNewEnergy.Protocol
                 case NEEncryptMethod.Exception:
                     return null;
                 case NEEncryptMethod.AES128:
-#if NETCOREAPP2_1
-                return new NE_AES128EncryptImpl_NetCore2(nEConfigs);
-#else
-                return new NEAES128EncryptImpl(nEConfigs);
-#endif
+                    return new NEAES128EncryptImpl(nEConfigs);
                 case NEEncryptMethod.RSA:
                     return new NERSAEncryptImpl(nEConfigs);
                 default:
diff --git a/src/GBNewEnergy.Protocol/NEEncrypts/NEAES128EncryptImpl.cs b/src/GBNewEnergy.Protocol/NEEncrypts/NEAES128EncryptImpl.cs
index 6120c82..8508e70 100644
--- a/src/GBNewEnergy.Protocol/NEEncrypts/NEAES128EncryptImpl.cs
+++ b/src/GBNewEnergy.Protocol/NEEncrypts/NEAES128EncryptImpl.cs
@@ -21,22 +21,17 @@ namespace GBNewEnergy.Protocol.NEEncrypts
         }
 
         public byte[] Encrypt(byte[] buffer)
-        {  
-            using (var ms = new MemoryStream())
+        {
+            using (Aes encryptor = Aes.Create())
             {
-                using (var AES = new RijndaelManaged())
-                {
-                    AES.KeySize = 256;
-                    AES.BlockSize = 128;
-                    var key = new Rfc2898DeriveBytes(_nEConfigs.NEEncryptKeyBytes, saltBytes, 1000);
-                    AES.Key = key.GetBytes(32);
-                    AES.IV = key.GetBytes(16);
-                    AES.Mode = CipherMode.CBC;
-                    using (var cs = new CryptoStream(ms, AES.CreateEncryptor(), CryptoStreamMode.Write))
-                    {
-                        cs.Write(buffer, 0, buffer.Length);
-                        cs.Close();
-                    }
+                Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(_nEConfigs.NEEncryptKey, saltBytes);
+                encryptor.Key = pdb.GetBytes(32);
+                encryptor.IV = pdb.GetBytes(16);
+                using (MemoryStream ms = new MemoryStream())
+                using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(),CryptoStreamMode.Write))
+                { 
+                    cs.Write(buffer, 0, buffer.Length);
+                    cs.Close();
                     return ms.ToArray();
                 }
             }
@@ -44,22 +39,19 @@ namespace GBNewEnergy.Protocol.NEEncrypts
 
         public byte[] Decrypt(byte[] buffer)
         {
-            using (var ms = new MemoryStream())
-            using (var AES = new RijndaelManaged())
+            using (Aes encryptor = Aes.Create())
             {
-                    AES.KeySize = 256;
-                    AES.BlockSize = 128;
-                    var key = new Rfc2898DeriveBytes(_nEConfigs.NEEncryptKeyBytes, saltBytes, 1000);
-                    AES.Key = key.GetBytes(32);
-                    AES.IV = key.GetBytes(16);
-                    AES.Mode = CipherMode.CBC;
-                    using (var cs = new CryptoStream(ms, AES.CreateDecryptor(), CryptoStreamMode.Write))
-                    {
-                        cs.Write(buffer, 0, buffer.Length);
-                        cs.Close();
-                    }
+                Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(_nEConfigs.NEEncryptKey, saltBytes);
+                encryptor.Key = pdb.GetBytes(32);
+                encryptor.IV = pdb.GetBytes(16);
+                using (MemoryStream ms = new MemoryStream())
+                using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateDecryptor(),CryptoStreamMode.Write))
+                { 
+                    cs.Write(buffer, 0, buffer.Length);
+                    cs.Close(); 
                     return ms.ToArray();
-             }
+                }
+            }
         }
     }
 }
diff --git a/src/GBNewEnergy.Protocol/NEGlobalConfigs.cs b/src/GBNewEnergy.Protocol/NEGlobalConfigs.cs
index fca9978..09ed2bb 100644
--- a/src/GBNewEnergy.Protocol/NEGlobalConfigs.cs
+++ b/src/GBNewEnergy.Protocol/NEGlobalConfigs.cs
@@ -12,10 +12,6 @@ namespace GBNewEnergy.Protocol
         /// </summary>
         public string NEEncryptKey { get; set; }
         /// <summary>
-        /// 密钥
-        /// </summary>
-        public byte[] NEEncryptKeyBytes => Encoding.UTF8.GetBytes(NEEncryptKey);
-        /// <summary>
         /// 数据单元加密方式
         /// 0x01：数据不加密；0x02：数据经过 RSA 算法加密；0x03:数据经过 AES128 位算法加密；“0xFE”表示异常，“0xFF”表示无效
         /// </summary>
diff --git a/src/NEEncrypts.Tests/NEEncryptsNETCore.Test/Program.cs b/src/NEEncrypts.Tests/NEEncryptsNETCore.Test/Program.cs
index cfeeadb..1fad826 100644
--- a/src/NEEncrypts.Tests/NEEncryptsNETCore.Test/Program.cs
+++ b/src/NEEncrypts.Tests/NEEncryptsNETCore.Test/Program.cs
@@ -14,12 +14,12 @@ namespace NEEncryptsNETCore.Test
              {
                  NEEncryptKey = "smallchi"
              });
-            string str =Guid.NewGuid().ToString("N");
+            string str ="aaaaaa111111";
             var bytes = Encoding.UTF8.GetBytes(str);
             var encrypt = nE_AES128EncryptImpl.Encrypt(bytes);
             Console.WriteLine("原数据:" + str);
             Console.WriteLine("加密后:" + encrypt.ToHexString());
-            Console.WriteLine("解密后:" + Encoding.UTF8.GetString(nE_AES128EncryptImpl.Decrypt(encrypt)));
+            Console.WriteLine("解密后:" + Encoding.ASCII.GetString(nE_AES128EncryptImpl.Decrypt(encrypt)));
             Console.ReadKey();
         }
     }