/// <summary>
/// Removes a file from the container at the specified index.
/// </summary>
/// <param name="index"></param>
public void RemoveFile(int index)
{
this.Files.RemoveAt(index);
for (int i = 1; i < this.Files.Count; i++)
{
this.Files[i].Offset = this.Files[i - 1].Offset + this.Files[i - 1].Length;
}
if (this.Files.Count == 0)
{
CFile cfile = new CFile {
Name = "The container is empty", Length = 0, Offset = 0, data = AESThenHMAC.SimpleEncryptWithPassword(GetBytes("empty"), this.Key), Dummy = false
};
cfile.Length = 0;
this.Files.Add(cfile);
}
this.Save();
if (this.addRandomBuffers)
{
RemoveDummy(index);
}
}
/// <summary>
/// Adds a new file to the container
/// </summary>
/// <param name="path"></param>
public void AddFile(string path)
{
if (this.Files.ElementAt(0).Name == "The container is empty")
{
this.Files.RemoveAt(0);
}
FileInfo info = new FileInfo(path);
CFile cfile = new CFile {
Name = info.Name, Length = (int)info.Length, Offset = this.nextOffset, data = AESThenHMAC.SimpleEncryptWithPassword(ReadFileBytes(path), this.Key), Dummy = false
};
cfile.Length = cfile.data.Length;
this.Files.Add(cfile);
this.Save();
nextOffset += (int)cfile.Length;
if (this.addRandomBuffers)
{
int randSize = (int)(cfile.Length * (0.05f + new Random().NextDouble() / 10f));
var data = AESThenHMAC.SimpleEncryptWithPassword(CreateArrayWithRandomContent(randSize), this.Key);
var dummy = new CFile {
Name = "", Length = data.Length, Offset = this.nextOffset, data = data, Dummy = true
};
this.Files.Add(dummy);
this.Save();
nextOffset += (int)dummy.Length;
}
}
/// <summary>
/// Saves the current state of the container.
/// </summary>
public void Save()
{
byte[] header = GetBytes(FileListToString());
header = AESThenHMAC.SimpleEncryptWithPassword(header, this.Key);
if (hiddenContainerLoaded)
{
header2 = header;
}
else
{
header1 = header;
}
int j = 0;
using (FileStream fileStream = new FileStream(this.Path, FileMode.Create))
{
var size1 = System.BitConverter.GetBytes(header1.Length);
fileStream.Write(size1, 0, size1.Length);
var size2 = System.BitConverter.GetBytes(header2.Length);
fileStream.Write(size2, 0, size2.Length);
Random rand = new Random();
j = 0;
// Write the data to the file, byte by byte.
for (int i = 0; i < header1.Length; i++)
{
fileStream.WriteByte(header1[i]);
}
j += header1.Length;
for (int i = j; i < 25000; i++)
{
fileStream.WriteByte((byte)rand.Next());
}
j = 0;
for (int i = 0; i < header2.Length; i++)
{
fileStream.WriteByte(header2[i]);
}
j += header2.Length;
for (int i = j; i < 25000; i++)
{
fileStream.WriteByte((byte)rand.Next());
}
foreach (var cfile in this.Files)
{
for (int i = 0; i < cfile.data.Length; i++)
{
fileStream.WriteByte(cfile.data[i]);
}
}
}
}
/// <summary>
/// Creates a new container
/// </summary>
/// <param name="filename"></param>
public void Create(string filename, bool createHidden = false, string hiddenKey = null)
{
using (FileStream fs = File.Create(filename)){ }
this.Path = filename;
if (hiddenKey == null)
{
hiddenKey = RandomString(32);
}
this.header2 = AESThenHMAC.SimpleEncryptWithPassword(GetBytes("empty"), hiddenKey);
CFile cfile = new CFile {
Name = "The container is empty", Length = 0, Offset = 0, data = AESThenHMAC.SimpleEncryptWithPassword(GetBytes("empty"), this.Key), Dummy = false
};
cfile.Length = 0;
this.Files.Add(cfile);
this.Save();
}