private int AllocateRandom(ref byte[] Data, int Size = 0, int NonAlign = 0)
{
CSPPrng rng = new CSPPrng();
if (Size != 0)
{
Data = new byte[Size];
}
else
{
int sze = 0;
if (NonAlign != 0)
{
while ((sze = rng.Next(MIN_ALLOC, MAX_ALLOC)) % NonAlign == 0)
{
;
}
}
else
{
sze = rng.Next(MIN_ALLOC, MAX_ALLOC);
}
Data = new byte[sze];
}
rng.GetBytes(Data);
return(Data.Length);
}
private void KeyParamsTest()
{
CSPPrng rnd = new CSPPrng();
KeyGenerator kg = new KeyGenerator();
for (int i = 0; i < 10; ++i)
{
// out-bound funcs return pointer to obj
KeyParams kp1 = kg.GetKeyParams(rnd.Next(1, 1024), rnd.Next(1, 128), rnd.Next(1, 128));
MemoryStream m = (MemoryStream)KeyParams.Serialize(kp1);
KeyParams kp2 = KeyParams.DeSerialize(m);
if (!kp1.Equals(kp2))
{
throw new Exception("KeyFactoryTest: KeyParams serialization test has failed!");
}
if (kp1.GetHashCode() != kp2.GetHashCode())
{
throw new Exception("KeyFactoryTest: KeyAuthority hash code test has failed!");
}
}
}
/// <summary>
/// Initialize an empty VolumeKey structure; generates a random key tag identifier
/// </summary>
///
/// <param name="Description">The cipher description</param>
/// <param name="Count">The number of key/vector pairs</param>
public VolumeKey(CipherDescription Description, int Count)
{
this.Description = Description;
this.Count = Count;
this.FileId = new int[Count];
this.State = new byte[Count];
this.Tag = new CSPPrng().GetBytes(TAG_SIZE);
int id = 0;
using (CSPPrng rng = new CSPPrng())
{
this.Tag = rng.GetBytes(TAG_SIZE);
id = rng.Next();
}
for (int i = 0; i < Count; ++i)
{
this.State[i] = (byte)VolumeKeyStates.Unassigned;
this.FileId[i] = id + i;
}
}
private void HmacDescriptionTest()
{
CSPPrng rng = new CSPPrng();
byte[] data = rng.GetBytes(rng.Next(100, 400));
byte[] key = rng.GetBytes(64);
HMAC mac = new HMAC(Digests.SHA256);
mac.Initialize(key);
byte[] c1 = mac.ComputeMac(data);
MacDescription mds = new MacDescription(64, Digests.SHA256);
MacStream mst = new MacStream(mds, new KeyParams(key));
mst.Initialize(new MemoryStream(data));
byte[] c2 = mst.ComputeMac();
if (!Evaluate.AreEqual(c1, c2))
{
throw new Exception("MacStreamTest: HMAC code arrays are not equal!");
}
}
private void CmacDescriptionTest()
{
CSPPrng rng = new CSPPrng();
byte[] data = rng.GetBytes(rng.Next(100, 400));
byte[] key = rng.GetBytes(32);
byte[] iv = rng.GetBytes(16);
CMAC mac = new CMAC(BlockCiphers.Rijndael);
mac.Initialize(key, iv);
byte[] c1 = mac.ComputeMac(data);
MacDescription mds = new MacDescription(32, BlockCiphers.Rijndael, IVSizes.V128, BlockSizes.B128, RoundCounts.R14);
MacStream mst = new MacStream(mds, new KeyParams(key, iv));
mst.Initialize(new MemoryStream(data));
byte[] c2 = mst.ComputeMac();
if (!Evaluate.AreEqual(c1, c2))
{
throw new Exception("MacStreamTest: CMAC code arrays are not equal!");
}
}