/// <summary>
/// Test the VolumeCipher class implementation
/// </summary>
public static void VolumeCipherTest(string InputDirectory)
{
string[] paths = DirectoryTools.GetFiles(InputDirectory);
// set cipher paramaters
CipherDescription desc = new CipherDescription(
SymmetricEngines.RDX, 32,
IVSizes.V128,
CipherModes.CTR,
PaddingModes.X923,
BlockSizes.B128,
RoundCounts.R14,
Digests.Keccak512,
64,
Digests.Keccak512);
// define the volume key
VolumeKey vkey = new VolumeKey(desc, paths.Length);
// key will be written to this stream
MemoryStream keyStream = new MemoryStream();
// create the volume key stream
using (VolumeFactory vf = new VolumeFactory(keyStream))
vf.Create(vkey);
// encrypt the files in the directory
using (VolumeCipher vc = new VolumeCipher(true, keyStream))
vc.Transform(paths);
// decrypt the files
using (VolumeCipher vc = new VolumeCipher(false, keyStream))
vc.Transform(paths);
// manual inspection of files..
}
/// <summary>
/// Creates a temporary VolumeKey on disk, extracts and compares the copy
/// <para>Throws an Exception on failure</</para>
/// </summary>
public static void VolumeFactoryTest()
{
string path = GetTempPath();
// cipher paramaters
CipherDescription desc = new CipherDescription(
SymmetricEngines.RDX, 32,
IVSizes.V128,
CipherModes.CTR,
PaddingModes.X923,
BlockSizes.B128,
RoundCounts.R14,
Digests.Keccak512,
64,
Digests.Keccak512);
// create the package key
VolumeKey vkey = new VolumeKey(desc, 10);
// add id's
for (int i = 0; i < vkey.FileId.Length; i++)
vkey.FileId[i] = i;
// write a key file
using (VolumeFactory vf = new VolumeFactory(path))
vf.Create(vkey);
for (int i = 0; i < vkey.Count; i++)
{
CipherDescription desc2;
KeyParams kp1;
KeyParams kp2;
using (FileStream stream = new FileStream(path, FileMode.Open))
kp1 = VolumeKey.AtIndex(stream, i);
int id = vkey.FileId[i];
// read the package
using (VolumeFactory vf = new VolumeFactory(path))
vf.Extract(id, out desc2, out kp2);
// compare key material
if (!Compare.AreEqual(kp1.Key, kp2.Key))
throw new Exception();
if (!Compare.AreEqual(kp1.IV, kp2.IV))
throw new Exception();
if (!desc.Equals(desc2))
throw new Exception();
}
if (File.Exists(path))
File.Delete(path);
}