void ProcessLeafs()
{
FileStream ThreadFilePtr = new FileStream(Filename, FileMode.Open, FileAccess.Read);
FileBlock ThreadFileBlock = FileParts[Convert.ToInt16(Thread.CurrentThread.Name)];
Tiger TG = new Tiger();
byte[] DataBlock;
byte[] Data = new byte[LeafSize + 1];
int LeafIndex, BlockLeafs;
int i;
ThreadFilePtr.Position = ThreadFileBlock.Start;
while (ThreadFilePtr.Position < ThreadFileBlock.End)
{
LeafIndex = (int)ThreadFilePtr.Position / 1024;
if (ThreadFileBlock.End - ThreadFilePtr.Position < DataBlockSize)
{
DataBlock = new byte[ThreadFileBlock.End - ThreadFilePtr.Position];
}
else
{
DataBlock = new byte[DataBlockSize];
}
ThreadFilePtr.Read(DataBlock, 0, DataBlock.Length); //read block
BlockLeafs = DataBlock.Length / 1024;
for (i = 0; i < BlockLeafs; i++)
{
Buffer.BlockCopy(DataBlock, i * LeafSize, Data, 1, LeafSize);
TG.Initialize();
TTH[0][LeafIndex++] = TG.ComputeHash(Data);
}
if (i * LeafSize < DataBlock.Length)
{
Data = new byte[DataBlock.Length - BlockLeafs * LeafSize + 1];
Data[0] = LeafHash;
Buffer.BlockCopy(DataBlock, BlockLeafs * LeafSize, Data, 1, (Data.Length - 1));
TG.Initialize();
TTH[0][LeafIndex++] = TG.ComputeHash(Data);
Data = new byte[LeafSize + 1];
Data[0] = LeafHash;
}
}
DataBlock = null;
Data = null;
}
private byte[] LeafHash(byte[] Raw_Data) //leaf hash.
{
byte[] Data = new byte[Raw_Data.Length + 1];
Data[0] = 0x00; //leaf hash mark.
Raw_Data.CopyTo(Data, 1);
//gets tiger hash value for leafs blocks.
Tiger TG = new Tiger();
TG.Initialize();
return(TG.ComputeHash(Data));
}
void ProcessInternalLeaf(int Level, int Index, byte[] LeafA, byte[] LeafB)
{
Tiger TG = new Tiger();
byte[] Data = new byte[LeafA.Length + LeafB.Length + 1];
Data[0] = InternalHash;
Buffer.BlockCopy(LeafA, 0, Data, 1, LeafA.Length);
Buffer.BlockCopy(LeafB, 0, Data, LeafA.Length + 1, LeafA.Length);
TG.Initialize();
TTH[Level][Index] = TG.ComputeHash(Data);
}
private byte[] InternalHash(byte[] LeafA, byte[] LeafB) //internal hash.
{
byte[] Data = new byte[LeafA.Length + LeafB.Length + 1];
Data[0] = 0x01; //internal hash mark.
//combines two leafs.
LeafA.CopyTo(Data, 1);
LeafB.CopyTo(Data, LeafA.Length + 1);
//gets tiger hash value for combined leaf hash.
Tiger TG = new Tiger();
TG.Initialize();
return(TG.ComputeHash(Data));
}
public static bool SelfTest()
{
ASCIIEncoding enc = null;
byte[] hash = null;
int nI = 0;
string TEST_DATA = null;
byte[] TEST_HASH = null;
Tiger tg = null;
int _Vb_t_i4_0 = 0;
byte[] _Vb_t_array_0 = null;
TEST_DATA = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
_Vb_t_array_0 = new byte[] { ((byte)15), ((byte)123), ((byte)249), ((byte)161), ((byte)155), ((byte)156), ((byte)88), ((byte)242), ((byte)183), ((byte)97),
((byte)13), ((byte)247), ((byte)232), ((byte)79), ((byte)10), ((byte)195), ((byte)167), ((byte)28), ((byte)99), ((byte)30),
((byte)123), ((byte)83), ((byte)247), ((byte)142) };
TEST_HASH = _Vb_t_array_0;
tg = new Tiger();
tg.Initialize();
enc = new ASCIIEncoding();
hash = tg.ComputeHash(enc.GetBytes(TEST_DATA));
if (hash.Length != TEST_HASH.Length)
{
return(false);
}
_Vb_t_i4_0 = (TEST_HASH.Length - 1);
for (nI = 0; (nI <= _Vb_t_i4_0); nI++)
{
if (hash[nI] != TEST_HASH[nI])
{
return(false);
}
}
return(true);
}
//leaf hash.
private byte[] LH(byte[] Raw_Data)
{
byte[] Data = new byte[Raw_Data.Length + 1];
Data[0] = 0x00; //leaf hash mark.
Raw_Data.CopyTo(Data,1);
//gets tiger hash value for leafs blocks.
Tiger TG = new Tiger();
TG.Initialize();
return TG.ComputeHash(Data);
}
//internal hash.
private byte[] IH(byte[] LeafA,byte[] LeafB)
{
byte[] Data = new byte[LeafA.Length + LeafB.Length + 1];
Data[0] = 0x01; //internal hash mark.
//combines two leafs.
LeafA.CopyTo(Data,1);
LeafB.CopyTo(Data,LeafA.Length + 1);
//gets tiger hash value for combined leaf hash.
Tiger TG = new Tiger();
TG.Initialize();
return TG.ComputeHash(Data);
}
public static bool SelfTest()
{
ASCIIEncoding enc = null;
byte[] hash = null;
int nI = 0;
string TEST_DATA = null;
byte[] TEST_HASH = null;
Tiger tg = null;
int _Vb_t_i4_0 = 0;
byte[] _Vb_t_array_0 = null;
TEST_DATA = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
_Vb_t_array_0 = new byte[] { ((byte) 15), ((byte) 123), ((byte) 249), ((byte) 161), ((byte) 155), ((byte) 156), ((byte) 88), ((byte) 242), ((byte) 183), ((byte) 97),
((byte) 13), ((byte) 247), ((byte) 232), ((byte) 79), ((byte) 10), ((byte) 195), ((byte) 167), ((byte) 28), ((byte) 99), ((byte) 30),
((byte) 123), ((byte) 83), ((byte) 247), ((byte) 142) };
TEST_HASH = _Vb_t_array_0;
tg = new Tiger ();
tg.Initialize ();
enc = new ASCIIEncoding ();
hash = tg.ComputeHash (enc.GetBytes (TEST_DATA));
if (hash.Length != TEST_HASH.Length)
{
return false;
}
_Vb_t_i4_0 = (TEST_HASH.Length - 1);
for (nI = 0; (nI <= _Vb_t_i4_0); nI++)
{
if (hash[nI] != TEST_HASH[nI])
{
return false;
}
}
return true;
}
void ProcessLeafs()
{
FileStream ThreadFilePtr = new FileStream(Filename,FileMode.Open,FileAccess.Read);
FileBlock ThreadFileBlock = FileParts[Convert.ToInt16(Thread.CurrentThread.Name)];
Tiger TG = new Tiger();
byte[] DataBlock;
byte[] Data = new byte[LeafSize + 1];
int LeafIndex,BlockLeafs;
int i;
ThreadFilePtr.Position = ThreadFileBlock.Start;
while (ThreadFilePtr.Position < ThreadFileBlock.End)
{
LeafIndex = (int) ThreadFilePtr.Position / 1024;
if (ThreadFileBlock.End - ThreadFilePtr.Position < DataBlockSize)
DataBlock = new byte[ThreadFileBlock.End - ThreadFilePtr.Position];
else
DataBlock = new byte[DataBlockSize];
ThreadFilePtr.Read(DataBlock,0,DataBlock.Length); //read block
BlockLeafs = DataBlock.Length / 1024;
for (i = 0; i < BlockLeafs; i++)
{
Buffer.BlockCopy(DataBlock,i * LeafSize,Data,1,LeafSize);
TG.Initialize();
TTH[0][LeafIndex++] = TG.ComputeHash(Data);
}
if (i * LeafSize < DataBlock.Length)
{
Data = new byte[DataBlock.Length - BlockLeafs * LeafSize + 1];
Data[0] = LeafHash;
Buffer.BlockCopy(DataBlock,BlockLeafs * LeafSize,Data,1,(Data.Length - 1));
TG.Initialize();
TTH[0][LeafIndex++] = TG.ComputeHash(Data);
Data = new byte[LeafSize + 1];
Data[0] = LeafHash;
}
}
DataBlock = null;
Data = null;
}
void ProcessInternalLeaf(int Level,int Index,byte[] LeafA,byte[] LeafB)
{
Tiger TG = new Tiger();
byte[] Data = new byte[LeafA.Length + LeafB.Length + 1];
Data[0] = InternalHash;
Buffer.BlockCopy(LeafA,0,Data,1,LeafA.Length);
Buffer.BlockCopy(LeafB,0,Data,LeafA.Length + 1,LeafA.Length);
TG.Initialize();
TTH[Level][Index] = TG.ComputeHash(Data);
}