@@ -0,0 +1,229 @@
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 ) ;
}
}
}
