public string Upload(string path, string filename, string key, int alg)
{
try
{
byte[] f = File.ReadAllBytes(path);
StoredFile sf = new StoredFile();
sf.username = Username;
sf.filename = filename;
sf.hash = MD5.HashString(f);
switch (alg)
{
case 0:
sf.data = DoubleTransposition.Encrypt(f, key, sf.hash);
sf.size = sf.data.Length;
break;
case 1:
sf.data = XTEA.Encrypt(f, key, sf.hash);
sf.size = sf.data.Length;
break;
default: throw new Exception("You have not chosen an algorithm.");
}
svc.Upload(Username, sf, Token);
Refresh();
return("File successfuly uploaded.");
}
catch (Exception e)
{
return(e.Message);
}
}
public void XTEAEcnryption(FileInfo file, FormModel model)
{
bool threadSuccesfull = false;
var timeStarted = DateTime.Now;
try
{
//OutputFileName
string outputFileName = FileNameCreator.CreateFileEncryptedName(
model.Folders.OutputFolder,
file.Name,
model.AlgorithmName);
//Log
loggerController.Add(" ! File enc: " + file.Name + ", Alg: " + model.AlgorithmName);
//Read a file char by char, and encrypt it
using (FileStream fsw = new FileStream(outputFileName, FileMode.Create))
{
using (BinaryWriter bw = new BinaryWriter(fsw, new ASCIIEncoding()))
{
//Writing the extension
char[] extension = file.Extension.Substring(1, file.Extension.Length - 1).ToCharArray();
char extensionLength = (char)extension.Length;
bw.Write(extensionLength);
for (var k = 0; k < extension.Length; k++)
{
bw.Write(extension[k]);
}
//Reading and encrypting files
var readedValue = File.ReadAllBytes(file.FullName);
var encryptedValue = XTEA.Encrypt(readedValue);
bw.Write(encryptedValue);
if (LoadedFilesController._END_OF_ENC_DEC_THREADS)
{
bw.Dispose();
fsw.Dispose();
File.Delete(outputFileName);
Thread.CurrentThread.Abort();
}
}
}
threadSuccesfull = true;
Thread.Sleep(250);
}
catch (Exception ex)
{
loggerController.Add(" ? Enc exception: " + ex.Message);
threadSuccesfull = false;
}
finally
{
this.ThreadEnds(file, threadSuccesfull, timeStarted);
}
}
/// <summary>
/// Stores the user's credentials in PlayerPrefs.
/// </summary>
/// <param name="username">The username to store.</param>
/// <param name="token">The token to store.</param>
/// <returns>Whether the operations was successfull.</returns>
public bool RememberUserCredentials(string username, string token)
{
if (string.IsNullOrEmpty(UserCredentialsPreferences) || string.IsNullOrEmpty(Settings.EncryptionKey) ||
string.IsNullOrEmpty(username) || string.IsNullOrEmpty(token))
{
return(false);
}
var credentials = XTEA.Encrypt(username, Settings.EncryptionKey) + "#" + XTEA.Encrypt(token, Settings.EncryptionKey);
PlayerPrefs.SetString(UserCredentialsPreferences, credentials);
PlayerPrefs.Save();
return(true);
}
/// <summary>
/// Sends a packet to the client
/// </summary>
/// <param name="packet"> The Packet </param>
internal void SendPacket(IPacket packet)
{
try
{
_stream.Write(_needToDecrypt ? XTEA.Encrypt(packet.Data, Config.Pong) : packet.Data, 0,
packet.Data.Length);
}
catch (IOException e)
{
_log.Error("Error with client: " + _ip + " Exception: " + e);
Drop("IOException: " + e.Message);
}
}
public void XTEABMPEcnryption(FileInfo file, FormModel model)
{
bool threadSuccesfull = false;
var timeStarted = DateTime.Now;
try
{
if (!file.Extension.Contains("bmp"))
{
throw new Exception("File is not bmp!");
}
//OutputFileName
string outputFileName = FileNameCreator.CreateFileEncryptedNameBMP(
model.Folders.OutputFolder,
file.Name,
model.AlgorithmName);
//Log
loggerController.Add(" ! File enc: " + file.Name + ", Alg: " + model.AlgorithmName);
//Read a file char by char, and encrypt it
using (FileStream fsw = new FileStream(outputFileName, FileMode.Create))
{
using (BinaryWriter bw = new BinaryWriter(fsw, new ASCIIEncoding()))
{
//Reading and encrypting files
var readedValue = File.ReadAllBytes(file.FullName);
long pos = readedValue[10] + 256 * (readedValue[11] + 256 * (readedValue[12] + 256 * readedValue[13]));
byte[] header = new byte[pos];
for (int i = 0; i < header.Length; i++)
{
header[i] = readedValue[i];
}
byte[] data = readedValue.Skip(header.Length).ToArray();
var encryptedValue = XTEA.Encrypt(data);
encryptedValue = header.Concat(encryptedValue).ToArray();
bw.Write(encryptedValue);
if (LoadedFilesController._END_OF_ENC_DEC_THREADS)
{
bw.Dispose();
fsw.Dispose();
File.Delete(outputFileName);
Thread.CurrentThread.Abort();
}
}
}
threadSuccesfull = true;
Thread.Sleep(250);
}
catch (Exception ex)
{
loggerController.Add(" ? Enc exception: " + ex.Message);
threadSuccesfull = false;
}
finally
{
this.ThreadEnds(file, threadSuccesfull, timeStarted);
}
}
