public static void GetWords(int num, string[] words, IWordSource wordsource, IRandomnessSource randomness)
{
for (int i = 0; i < num; i++)
{
words[i] = wordsource.GetWord(randomness.NextRandom(0, wordsource.NumWords()));
}
}
// wordsource should always be the one used to generate the words.
public static BigInteger CrackingCombinations(string[] words, IWordSource source, PriorKnowledge prior)
{
int numChars = 0;
int combinationsPerChar = 0;
if (prior == PriorKnowledge.Passphrase)
{
numChars = words.Length;
combinationsPerChar = source.NumWords();
}
else
{
numChars = String.Join("", words).Length;
combinationsPerChar = AlphanumSource.Instance.NumWords();
}
var perChar = new BigInteger("" + combinationsPerChar);
return(perChar.Pow(numChars));
}
private void Regenerate()
{
if (CanCreatePhrase)
{
int num = NumWords;
Words = new string[num];
var randomness = RandomnessSourceList.SelectedItem as IRandomnessSource;
Wordsource = WordsSourceList.SelectedItem as IWordSource;
int wordsourceNumWords = Wordsource.NumWords();
double perWord = Math.Log(wordsourceNumWords, 2);
double bits = Words.Length * perWord;
Utils.GetWords(num, Words, Wordsource, randomness);
PassphraseOutput = String.Join(" ", Words);
DoCrackingCalculations();
NumBitsOutput = String.Format("{0:0.##} bits", bits);
NumBitsTooltip = Utils.BitText(perWord, num, bits, wordsourceNumWords);
perWord = Math.Log(_alphanumSource.NumWords(), 2);
int alphWords = 0; //(int) Math.Ceiling((float)bits / perWord);
while (alphWords * perWord < bits)
{
alphWords++;
}
var alphanumWords = new string[alphWords];
bits = alphWords * perWord;
Utils.GetWords(alphWords, alphanumWords, _alphanumSource, randomness);
AlphanumOutput = String.Join("", alphanumWords);
AlphanumBitsText = Utils.BitText(perWord, alphWords, bits, _alphanumSource.NumWords());
NotifyPropertyChanged("PassphraseOutput");
NotifyPropertyChanged("PassphraseBitsText");
NotifyPropertyChanged("AlphanumOutput");
NotifyPropertyChanged("AlphanumBitsText");
NotifyPropertyChanged("NumBitsOutput");
NotifyPropertyChanged("NumBitsTooltip");
}
}