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consolidate all repos to one for archive

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This commit is contained in:
Nikola Petrov
2025-01-28 13:46:42 +01:00
commit a6610fbc7a
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63
semester_3/racunalniska_omrezja/naloga_4/.gitattributes vendored Normal file
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###############################################################################
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* text=auto
###############################################################################
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###############################################################################
#*.doc diff=astextplain
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#*.rtf diff=astextplain
#*.RTF diff=astextplain

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## Ignore Visual Studio temporary files, build results, and
## files generated by popular Visual Studio add-ons.
##
## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
# User-specific files
*.rsuser
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semester_3/racunalniska_omrezja/naloga_4/4_Naloga.sln Normal file
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.3.32929.385
MinimumVisualStudioVersion = 10.0.40219.1
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Client", "Client\Client.csproj", "{319BBFFD-8B44-4979-A249-B373C0999197}"
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Server", "Server\Server.csproj", "{AF0EF317-9227-41D3-AF83-0718A008A7CD}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MyApplication", "MyApplication\MyApplication.csproj", "{FCB673DA-8D3B-421B-A746-63ABF92A74D9}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{319BBFFD-8B44-4979-A249-B373C0999197}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{319BBFFD-8B44-4979-A249-B373C0999197}.Debug|Any CPU.Build.0 = Debug|Any CPU
{319BBFFD-8B44-4979-A249-B373C0999197}.Release|Any CPU.ActiveCfg = Release|Any CPU
{319BBFFD-8B44-4979-A249-B373C0999197}.Release|Any CPU.Build.0 = Release|Any CPU
{AF0EF317-9227-41D3-AF83-0718A008A7CD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{AF0EF317-9227-41D3-AF83-0718A008A7CD}.Debug|Any CPU.Build.0 = Debug|Any CPU
{AF0EF317-9227-41D3-AF83-0718A008A7CD}.Release|Any CPU.ActiveCfg = Release|Any CPU
{AF0EF317-9227-41D3-AF83-0718A008A7CD}.Release|Any CPU.Build.0 = Release|Any CPU
{FCB673DA-8D3B-421B-A746-63ABF92A74D9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{FCB673DA-8D3B-421B-A746-63ABF92A74D9}.Debug|Any CPU.Build.0 = Debug|Any CPU
{FCB673DA-8D3B-421B-A746-63ABF92A74D9}.Release|Any CPU.ActiveCfg = Release|Any CPU
{FCB673DA-8D3B-421B-A746-63ABF92A74D9}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {3C45B0A3-2A60-451D-8C65-A3B529982687}
EndGlobalSection
EndGlobal

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semester_3/racunalniska_omrezja/naloga_4/Client/Client.cs Normal file
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using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Security.Cryptography;
using System.Reflection.Metadata;
using System;
namespace Naloga {
class Client
{
const int STD_PORT = 1234;
const string STD_IP = "127.0.0.1";
const int STD_BUFF = 256;
static void Main()
{
TcpClient client = new TcpClient();
client.Connect(IPAddress.Parse(STD_IP), STD_PORT);
NetworkStream tcpStream = client.GetStream();
byte[] bytes = new byte[STD_BUFF];
int lenght = tcpStream.Read(bytes, 0, bytes.Length);
int bufferCount = BitConverter.ToInt32(bytes,0);
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[STD_BUFF];
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");
//Console.WriteLine(Encoding.UTF8.GetString(aes.IV));
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
// Encrypt the message
using(FileStream fileStream = new FileStream("video.mp4", FileMode.OpenOrCreate))
using (CryptoStream cs = new CryptoStream(tcpStream, aes.CreateDecryptor(), CryptoStreamMode.Read))
{
for (int i = 0; i < bufferCount+1; i++)
{
byte[] bytes2 = new byte[STD_BUFF];
int len = cs.Read(bytes2, 0, bytes2.Length);
//Console.WriteLine(Encoding.UTF8.GetString(bytes2));
fileStream.Write(bytes2, 0, len);
}
cs.Close();
fileStream.Close();
}
aes.Dispose();
}
}
tcpStream.Close();
client.Close();
Console.WriteLine("Finished");
Console.ReadKey();
}
}
}

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semester_3/racunalniska_omrezja/naloga_4/Client/Client.csproj Normal file
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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>

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semester_3/racunalniska_omrezja/naloga_4/MyApplication/App.xaml Normal file
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<Application x:Class="MyApplication.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:MyApplication"
StartupUri="MainWindow.xaml">
<Application.Resources>
</Application.Resources>
</Application>

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semester_3/racunalniska_omrezja/naloga_4/MyApplication/App.xaml.cs Normal file
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using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
namespace MyApplication
{
/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
}
}

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semester_3/racunalniska_omrezja/naloga_4/MyApplication/AssemblyInfo.cs Normal file
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using System.Windows;
[assembly: ThemeInfo(
ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
//(used if a resource is not found in the page,
// or application resource dictionaries)
ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
//(used if a resource is not found in the page,
// app, or any theme specific resource dictionaries)
)]

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semester_3/racunalniska_omrezja/naloga_4/MyApplication/MainWindow.xaml Normal file
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<Window x:Class="MyApplication.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:MyApplication"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<StackPanel>
<Label Name="lableAddress" Content="Label"/>
<Button Content="Select file to send" Click="Select_Click"/>
<Button x:Name="send_Button" Content="Send" Click="Send_Click" IsEnabled="False"/>
<Button Content="Recive" Click="Recive_Click"/>
<Label Name="lableFileName"/>
<Label Name="lableSize"/>
<Label Name="lableFinish"/>
</StackPanel>
</Grid>
</Window>

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semester_3/racunalniska_omrezja/naloga_4/MyApplication/MainWindow.xaml.cs Normal file
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using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace MyApplication
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
const int STD_PORT = 1234;
const string STD_IP = "127.0.0.1";
const int STD_BUFF = 256;
string fileName = "";
public MainWindow()
{
InitializeComponent();
}
private void Select_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog dialog = new OpenFileDialog();
dialog.FileName = ""; // Default file name
dialog.DefaultExt = "*."; // Default file extension
dialog.Filter = "All|*.*"; // Filter files by extension
bool? result = dialog.ShowDialog();
if (result == true)
{
fileName = dialog.FileName;
lableAddress.Content = fileName;
send_Button.IsEnabled = true;
}
}
private void Send_Click(object sender, RoutedEventArgs e)
{
lableFinish.Content = "";
Send();
}
private void Recive_Click(object sender, RoutedEventArgs e)
{
lableFinish.Content = "";
Recive();
}
private void Recive()
{
string downloadsPath = KnownFolders.GetPath(KnownFolder.Downloads);
TcpListener tcpListener = new TcpListener(IPAddress.Parse(STD_IP), STD_PORT);
tcpListener.Start();
using TcpClient tcpClient = tcpListener.AcceptTcpClient();
using NetworkStream networkStream = tcpClient.GetStream();
//--------------------------------------------------------------------------------------------------Recive Name of File------------------------------------
byte[] buffer = new byte[STD_BUFF];
int readBytes = networkStream.Read(buffer, 0, buffer.Length);
if (readBytes < 0) return;
string fileName = Encoding.UTF8.GetString(buffer,0, readBytes);
string fileDestination = downloadsPath + "\\" + fileName;
lableFileName.Content = fileDestination;
//-----------------------------------------------------------------------------------------------Send Size of File------------------------------------
buffer = new byte[STD_BUFF];
readBytes = networkStream.Read(buffer, 0, buffer.Length);
if (readBytes < 0) return;
int bufferCount = BitConverter.ToInt32(buffer, 0);
lableSize.Content = bufferCount.ToString();
//-------------------------------------------------------------------------------------------------ECDiffieHellmanCng--------------------
using ECDiffieHellmanCng eCDiffieHellmanCng = new ECDiffieHellmanCng();
eCDiffieHellmanCng.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash;
eCDiffieHellmanCng.HashAlgorithm = CngAlgorithm.Sha256;
byte[] myPublicKey = eCDiffieHellmanCng.PublicKey.ToByteArray();
networkStream.Write(myPublicKey, 0, myPublicKey.Length);
byte[] therePublicKey = new byte[140];
readBytes = networkStream.Read(therePublicKey, 0, therePublicKey.Length);
if (readBytes < 0) return;
CngKey thereKey = CngKey.Import(therePublicKey, CngKeyBlobFormat.EccPublicBlob);
byte[] Key = eCDiffieHellmanCng.DeriveKeyMaterial(thereKey);
using Aes aes = Aes.Create();
aes.Key = Key;
aes.IV = Encoding.UTF8.GetBytes("sestnajst1616161");
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
using CryptoStream cryptoStream = new CryptoStream(networkStream, aes.CreateDecryptor(), CryptoStreamMode.Read);
using FileStream fileStream = new FileStream(fileDestination, FileMode.OpenOrCreate);
for (int i = 0; i < bufferCount; i++)
{
buffer = new byte[STD_BUFF];
readBytes = cryptoStream.Read(buffer, 0, buffer.Length);
fileStream.Write(buffer, 0, readBytes);
}
cryptoStream.Close();
aes.Clear();
eCDiffieHellmanCng.Clear();
networkStream.Close();
tcpClient.Close();
tcpListener.Stop();
lableFinish.Content = "finished";
}
void Send()
{
using TcpClient tcpClient = new TcpClient();
tcpClient.Connect(IPAddress.Parse(STD_IP), STD_PORT);
using NetworkStream networkStream = tcpClient.GetStream();
//--------------------------------------------------------------------------------------------------Send Name of File------------------------------------
string[] fileNames = fileName.Split("\\");
byte[] nameInBytes = Encoding.UTF8.GetBytes(fileNames.Last());
networkStream.Write(nameInBytes, 0, nameInBytes.Length);
lableFileName.Content = fileName;
using FileStream fileStream = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.Read);
//-----------------------------------------------------------------------------------------------Send Size of File------------------------------------
int bufferCount = Convert.ToInt32(Math.Ceiling((double)fileStream.Length / (double)STD_BUFF));
byte[] size = BitConverter.GetBytes(bufferCount);
networkStream.Write(size, 0, size.Length);
lableSize.Content = bufferCount.ToString();
//-------------------------------------------------------------------------------------------------ECDiffieHellmanCng--------------------
using ECDiffieHellmanCng eCDiffieHellmanCng = new ECDiffieHellmanCng();
eCDiffieHellmanCng.KeyDerivationFunction = ECDiffieHellmanKeyDerivationFunction.Hash;
eCDiffieHellmanCng.HashAlgorithm = CngAlgorithm.Sha256;
//----------------------------------------------------------------------Send my key--------------
byte[] myPublicKey = eCDiffieHellmanCng.PublicKey.ToByteArray();
networkStream.Write(myPublicKey, 0, myPublicKey.Length);
//-------------------------------------------------------------------Recive there key and create private key------------------------
byte[] therePublicKey = new byte[140];
int readByte = networkStream.Read(therePublicKey, 0, therePublicKey.Length);
if (readByte < 0) return;
CngKey thereKey = CngKey.Import(therePublicKey, CngKeyBlobFormat.EccPublicBlob);
byte[] Key = eCDiffieHellmanCng.DeriveKeyMaterial(thereKey);
//---------------------------------------------------------------------------AES Crete
using Aes aes = Aes.Create();
aes.Key = Key;
aes.IV = Encoding.UTF8.GetBytes("sestnajst1616161");
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
//----------------------------------------------------------------------------Create crypto strim
using CryptoStream cryptoStream = new CryptoStream(fileStream, aes.CreateEncryptor(), CryptoStreamMode.Read);
for(int i = 0; i < bufferCount+1; i++)
{
byte[] buffer = new byte[STD_BUFF];
int returndCaunt = cryptoStream.Read(buffer, 0, buffer.Length);
networkStream.Write(buffer, 0, returndCaunt);
}
cryptoStream.Close();
aes.Clear();
eCDiffieHellmanCng.Clear();
networkStream.Close();
networkStream.Close();
tcpClient.Close();
lableFinish.Content = "finished";
}
public enum KnownFolder
{
Contacts,
Downloads,
Favorites,
Links,
SavedGames,
SavedSearches
}
public static class KnownFolders
{
private static readonly Dictionary<KnownFolder, Guid> _guids = new()
{
[KnownFolder.Contacts] = new("56784854-C6CB-462B-8169-88E350ACB882"),
[KnownFolder.Downloads] = new("374DE290-123F-4565-9164-39C4925E467B"),
[KnownFolder.Favorites] = new("1777F761-68AD-4D8A-87BD-30B759FA33DD"),
[KnownFolder.Links] = new("BFB9D5E0-C6A9-404C-B2B2-AE6DB6AF4968"),
[KnownFolder.SavedGames] = new("4C5C32FF-BB9D-43B0-B5B4-2D72E54EAAA4"),
[KnownFolder.SavedSearches] = new("7D1D3A04-DEBB-4115-95CF-2F29DA2920DA")
};
public static string GetPath(KnownFolder knownFolder)
{
return SHGetKnownFolderPath(_guids[knownFolder], 0);
}
[DllImport("shell32",
CharSet = CharSet.Unicode, ExactSpelling = true, PreserveSig = false)]
private static extern string SHGetKnownFolderPath(
[MarshalAs(UnmanagedType.LPStruct)] Guid rfid, uint dwFlags,
nint hToken = 0);
}
}
}

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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>WinExe</OutputType>
<TargetFramework>net6.0-windows</TargetFramework>
<Nullable>enable</Nullable>
<UseWPF>true</UseWPF>
</PropertyGroup>
</Project>

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semester_3/racunalniska_omrezja/naloga_4/Server/Server.cs Normal file
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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();
}
}
}

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semester_3/racunalniska_omrezja/naloga_4/Server/Server.csproj Normal file
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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>