consolidate all repos to one for archive

semester_3/racunalniska_omrezja/naloga_4/Server/Server.cs

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+using System.Net.Sockets;
+using System.Net;
+using System.Text;
+using System;
+using System.Security.Cryptography;
+
+namespace Naloga
+{
+    class Server
+    {
+        const int STD_PORT = 1234;
+        const string STD_IP = "127.0.0.1";
+        const int STD_BUFF = 256;
+        
+
+        static void Main()
+        {
+           
+            TcpListener listener = new TcpListener(IPAddress.Parse(STD_IP), STD_PORT);
+            listener.Start();
+
+            TcpClient client = listener.AcceptTcpClient();
+            NetworkStream tcpStream = client.GetStream();
+            FileStream fileStream = new FileStream("video.mp4", FileMode.OpenOrCreate);
+
+            
+
+            int bufferCount = Convert.ToInt32(Math.Ceiling((double)fileStream.Length / (double)STD_BUFF));
+            byte[] size = BitConverter.GetBytes(bufferCount);
+            tcpStream.Write(size, 0, size.Length);
+           
+
+            using (ECDiffieHellmanCng eCDiffieHellmanCng = new ECDiffieHellmanCng())
+            {
+
+                eCDiffieHellmanCng.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash;
+                eCDiffieHellmanCng.HashAlgorithm = CngAlgorithm.Sha256;
+
+                byte[] myPublicKey = eCDiffieHellmanCng.PublicKey.ToByteArray();
+               
+
+
+
+                tcpStream.Write(myPublicKey, 0, myPublicKey.Length);
+                byte[] therePublicKey = new byte[myPublicKey.Length];
+                int retLenght = tcpStream.Read(therePublicKey, 0, therePublicKey.Length);
+                CngKey thereKey = CngKey.Import(therePublicKey, CngKeyBlobFormat.EccPublicBlob);
+                byte[] myKey = eCDiffieHellmanCng.DeriveKeyMaterial(thereKey);
+
+               
+                
+                
+                using (Aes aes = Aes.Create())
+                {
+                   
+                    aes.Key = myKey;
+                    
+                    aes.IV = Encoding.UTF8.GetBytes("sestnajst1616161"); ;
+                    //tcpStream.Write(aes.IV, 0, aes.IV.Length);
+                    //Console.WriteLine(Encoding.UTF8.GetString(aes.IV));
+                    aes.Mode = CipherMode.CBC;
+                    aes.Padding = PaddingMode.PKCS7;
+                    // Encrypt the message
+
+
+
+                    using (CryptoStream cs = new CryptoStream(fileStream, aes.CreateEncryptor(), CryptoStreamMode.Read))
+                    {
+                        for(int i = 0; i < bufferCount+1; i++)
+                        {
+                            byte[] buffer = new byte[STD_BUFF];
+                            int readBytes = cs.Read(buffer, 0, buffer.Length);
+                            tcpStream.Write(buffer, 0, readBytes);
+                        }
+                        cs.Close();
+                    }
+                    aes.Dispose();
+                }
+                eCDiffieHellmanCng.Dispose();
+
+            }
+
+
+
+            Console.WriteLine("Finished");
+
+            fileStream.Close();
+            tcpStream.Close();
+            client.Close();
+            listener.Stop();
+            Console.ReadKey();
+        }
+    }
+
+}

semester_3/racunalniska_omrezja/naloga_4/Server/Server.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>