public static Shifr[] encrypt(byte[][] message, EllipticCurvePoint publicB, EllipticCurvePoint _pointG)
{
Shifr[] sh = new Shifr[message.GetLength(0)];
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
byte[] key = new byte[15];
rng.GetBytes(key);
BigInteger k = new BigInteger(key);
if (k < 0)
{
k = -k;
}
;
ParallelEncoding pe = new ParallelEncoding(k, message, publicB, _pointG);
Task t1 = new Task(pe.Func0);
Task t2 = new Task(pe.Func1);
Task t3 = new Task(pe.Func2);
t1.Start();
t2.Start();
t3.Start();
pe.Func3();
Task.WaitAll(t1, t2, t3);
return(pe.Shifr);
}
public void FuncNoParallel()
{
for (int i = 0; i < lengthmess; i++)
{
int correct = 0;
BigInteger bigtext = new BigInteger(Message[i]);
EllipticCurvePoint pointtext = PointG.SearchPoint(bigtext, out correct);
EllipticCurvePoint point2 = EllipticCurvePoint.AffineCoords(EllipticCurvePoint.AddPoint(pointtext, kPublicB));
Shifr[i] = new Shifr(kP, point2, correct);
}
}
public static Shifr[] InShifr(string _str, EllipticCurvePoint g)
{
StringBuilder str = new StringBuilder(_str);
int _countSh = Convert.ToInt32(str.ToString(0, 24), 2);
Shifr[] sh = new Shifr[_countSh];
int count = Convert.ToInt32(str.ToString(24, 8), 2);
List <byte> pkP = new List <byte>();
for (int i = 0; i < count; i++)
{
byte temp = Convert.ToByte(str.ToString(32 + i * 8, 8), 2);
pkP.Add(temp);
}
str = str.Remove(0, count * 8 + 32);
byte[] pointkP = pkP.ToArray();
string point1 = BitConverter.ToString(pointkP, 0).Replace("-", ""); // сжатая точка kP
EllipticCurvePoint kP = EllipticCurvePoint.UnCompressPoint(point1, g);
string[] strshifr = new string[_countSh];
var tasks = new List <Task>();
int currentchar = 0;
for (int i = 0; i < _countSh; i++)
{
int lenstrcadr = Convert.ToInt32(str.ToString(currentchar, 16), 2);
strshifr[i] = str.ToString(currentchar + 16, lenstrcadr);
currentchar += lenstrcadr + 16;
var i1 = i;
tasks.Add(Task.Factory.StartNew(delegate()
{
int correct = 0; // корректировка
correct = Convert.ToInt32(strshifr[i1].Substring(0, 5), 2);
int countSecondPoint = Convert.ToInt32(strshifr[i1].Substring(5, 8), 2);
var secondPoint = new List <byte>();
for (int j = 0; j < countSecondPoint; j++)
{
byte temp = Convert.ToByte(strshifr[i1].Substring(13 + 8 * j, 8), 2);
secondPoint.Add(temp);
}
string _second = BitConverter.ToString(secondPoint.ToArray(), 0).Replace("-", ""); // сжатая точка
var second = EllipticCurvePoint.UnCompressPoint(_second, g);
sh[i1] = new Shifr(kP, second, correct);
}));
}
Task.WaitAll(tasks.ToArray());
return(sh.ToArray());
}
public void Func3()
{
for (int i = 3; i < lengtshifr; i += 4)
{
Shifr _sh = Sh[i];
EllipticCurvePoint para2 = _sh.PointB;
EllipticCurvePoint t = EllipticCurvePoint.AddPoint(para2, KeyPara1);
BigInteger q = t.X * Additional.Inverse(t.Z, t.P);
q = BigInteger.Remainder(q, t.P);
if (_sh.Correct != 0)
{
q += _sh.Correct;
}
Message[i] = q.ToByteArray();
}
}
