private bool _TestFailed(OmgNum num)
{
m_primeTester.SetTestedNumber(num.Copy());
for (int i = 0; i < m_testsPerNumber; i++)
{
OmgNum testBase = OmgOp.Random(OmgNum.GetConst(2), num);
bool isPrime = m_primeTester.IsPrimeToBase(testBase);
testBase.Release();
if (!isPrime)
{
return(true);
}
}
return(false);
}
private OmgNum _FindFactorsWithPollard(Dictionary <OmgNum, OmgNum> result, OmgNum num)
{
num = num.Copy();
while (!num.IsOne())
{
OmgNum factor = m_polard.FindFactor(num, maxIterations: 100000);
if (factor == null || factor.IsOne() || OmgOp.Equal(factor, num))
{
return(num);
}
OmgNum pow = _FindPow(ref num, factor);
result[factor] = pow;
}
return(num);
}
public SignaureKey GenerateSignature(int keyByteLength)
{
int componentLength = keyByteLength * 8 / 2;
OmgNum p = m_primeSource.GeneratePrime(componentLength);
OmgNum q = m_primeSource.GeneratePrime(componentLength);
OmgNum n = OmgOp.Multiply(p, q);
OmgNum carmN = _Carmichael(p.Dec(), q.Dec());
OmgNum e = _SelectRandomExponent(carmN, out OmgNum d);
p.Release();
p.Release();
return(new SignaureKey {
cert = new SignCertificate {
N = n.Copy(), D = d
},
secret = new SignSecret()
{
N = n, E = e
}
});
}
public Dictionary <OmgNum, OmgNum> Factorize(OmgNum num)
{
var initNum = num.Copy();
var result = new Dictionary <OmgNum, OmgNum>();
if (_IsSmallPrime(result, num))
{
return(result);
}
num = _FindFactorsWithPollard(result, num);
num = _FermaFactorization(result, num);
if (!num.IsOne())
{
result[num] = 1.ToOmgNum();
}
if (result.Count == 1 && result.TryGetValue(initNum, out var power) && power.IsOne())
{
return(result);
}
var nonPrimeFactors = new Stack <OmgNum>(result.Keys);
while (nonPrimeFactors.Count > 0)
{
var factor = nonPrimeFactors.Pop();
if (result[factor].IsZero())
{
result.Remove(factor);
continue;
}
var primeFactors = Factorize(factor);
if (primeFactors.Count == 1 && primeFactors.Values.First().IsOne())
{
continue;
}
var topPower = result[factor];
result.Remove(factor);
foreach (var primeFactor in primeFactors)
{
var pow = OmgOp.Multiply(topPower, primeFactor.Value);
if (result.ContainsKey(primeFactor.Key))
{
result[primeFactor.Key] = OmgOp.Add(result[primeFactor.Key], pow);
}
else
{
result[primeFactor.Key] = pow;
}
}
}
var keys = new List <OmgNum>(result.Keys);
foreach (var key in keys)
{
if (result[key].IsZero())
{
result.Remove(key);
}
}
return(result);
}
