private bool TestPassword(string psw)
{
_ms.Position = 0;
var response = Crypter.Decrypt(VocabularyProviderFactory.CreateProvider(psw), _ms);
return(response.Contains("parter"));
}
private void LoadFile()
{
var stream = ContentResolver.OpenInputStream(ContentReference);
if (DecryptRadioButton.Checked)
{
const int MEGABYTE = 1024 * 1024;
var tempBuffers = new List <byte[]>();
int totalRead = 0;
int read;
//read all into memory
do
{
var tempBuffer = new byte[MEGABYTE];
read = stream.Read(tempBuffer, 0, MEGABYTE);
if (read > 0)
{
totalRead += read;
tempBuffers.Add(tempBuffer);
}
} while (read == MEGABYTE);
//assemble back into one buffer
var buffer = new byte[totalRead];
for (int i = 0; i < tempBuffers.Count; i++)
{
Array.Copy(tempBuffers[i], 0, buffer, i * MEGABYTE, i == tempBuffers.Count - 1 ? totalRead % MEGABYTE : MEGABYTE);
}
//decrypt
string decoded;
using (var wrapper = new MemoryStream(buffer))
{
decoded = Crypter.Decrypt(VocabularyProviderFactory.CreateProvider(PasswordBox.Text), wrapper);
}
//replace tabs with tab stops
var builder = new StringBuilder();
int counter = 0;
for (int i = 0; i < decoded.Length; i++)
{
switch (decoded[i])
{
case '\r':
case '\n':
counter = 0;
builder.Append(decoded[i]);
break;
case '\t':
var delta = 8 - (counter % 8);
counter += delta;
builder.Append(' ', delta);
break;
default:
counter++;
builder.Append(decoded[i]);
break;
}
}
//set content
ContentViewer.Text = builder.ToString();
}
else
{
using (var istr = new StreamReader(stream))
{
ContentViewer.Text = istr.ReadToEnd();
}
}
SettingsGrid.Visibility = ViewStates.Gone;
ContentViewer.Visibility = ViewStates.Visible;
}
