public double CalculateFitness(string cipherText)
{
double fitness = 0;
SubstitutionCipher cipher = new SubstitutionCipher();
string decrypted = cipher.Decrypt(cipherText, Key);
//var trigramCounts = new FrequenciesCalculation();
var decrTrigramCounts = FrequenciesCalculation.getTrigramCounts(decrypted);
foreach (var trigram in decrTrigramCounts.Keys)
{
double defTrigramCount = FrequenciesCalculation.getCount(trigram);
if (defTrigramCount != 0)
{
fitness += decrTrigramCounts[trigram] * Math.Log(defTrigramCount, 2.0);
}
}
return(fitness);
}
public void SimulationStart()
{
FrequenciesCalculation frequenciesCalculation = new FrequenciesCalculation();
FrequenciesCalculation.PopulateDefTrigramCounts();
Pool pool1 = new Pool(PoolSize, EncryptedText);
pool1.CreateInitialPool();
Pool pool2 = new Pool(PoolSize, EncryptedText);
pool2.CreateInitialPool();
pool1.EnsureDistinctPool();
pool2.EnsureDistinctPool();
gen.CreateFirstGeneration(pool1, pool2);
gen.EnsureDistinctPools();
gen.GenerationSample[0].PossibleKeys.Sort(ComparatorForSorting);
gen.GenerationSample[1].PossibleKeys.Sort(ComparatorForSorting);
}