public void Init(int seed)
{
var s = new byte[4];
Md.Begin();
SumResidue = 0;
CheckSum.Sival(ref s, 0, (UInt32)seed);
Update(s, 0, 4);
}
/// <summary>
/// Writes Int64 value to out buffer
/// </summary>
/// <param name="x"></param>
public void WriteLongInt(Int64 x)
{
var data = new byte[8];
if (x <= 0x7FFFFFFF)
{
WriteInt((int)x);
return;
}
WriteUInt(0xFFFFFFFF);
CheckSum.Sival(ref data, 0, (UInt32)(x & 0xFFFFFFFF));
CheckSum.Sival(ref data, 4, (UInt32)((x >> 32) & 0xFFFFFFFF));
Write(data, 0, 8);
}
/// <summary>
///
/// </summary>
/// <param name="code"></param>
/// <param name="buffer"></param>
/// <param name="count"></param>
public void MultiplexWrite(MsgCode code, byte[] buffer, int count)
{
var localBuffer = new byte[4096];
var n = count;
CheckSum.Sival(ref localBuffer, 0, (UInt32)(((MplexBase + (int)code) << 24) + count));
if (n > localBuffer.Length - 4)
{
n = localBuffer.Length - 4;
}
Util.MemoryCopy(localBuffer, 4, buffer, 0, n);
_socketOut.Write(localBuffer, 0, n + 4);
count -= n;
if (count > 0)
{
_socketOut.Write(buffer, n, count);
}
}
/// <summary>
/// Generates challenge using time as vector
/// </summary>
/// <param name="addr"></param>
/// <param name="opt"></param>
/// <returns></returns>
public static string GenerateChallenge(string addr, Options opt)
{
var challenge = String.Empty;
var input = new byte[32];
var timeVector = DateTime.Now;
for (var i = 0; i < addr.Length; i++)
{
input[i] = Convert.ToByte(addr[i]);
}
CheckSum.Sival(ref input, 16, (UInt32)timeVector.Second);
CheckSum.Sival(ref input, 20, (UInt32)timeVector.Hour);
CheckSum.Sival(ref input, 24, (UInt32)timeVector.Day);
var sum = new Sum(opt);
sum.Init(0);
sum.Update(input, 0, input.Length);
challenge = Encoding.ASCII.GetString(sum.End());
return(challenge);
}