public override ProtectedString Generate(PwProfile prf, CryptoRandomStream crsRandomSource)
{
var words = GetWords();
var options = GeneratorOptions.FromString(prf.CustomAlgorithmOptions);
var strings = new List <string>();
//Handle digits
var digitStrs = new string[options.DigitCount];
for (var i = 0; i < options.DigitCount; i++)
{
digitStrs[i] = crsRandomSource.GetRandomInt(10).ToString();
}
if (options.KeepDigitsTogether)
{
strings.Add(string.Concat(digitStrs));
}
else
{
strings.AddRange(digitStrs);
}
//Handle words
if (options.MaxLength == 0)
{
if (options.MinLength == 0)
{
for (var i = 0; i < 3; i++)
{
strings.Add(crsRandomSource.GetRandomElement(words));
}
}
else
{
var tmpLength = (int)options.DigitCount;
while (tmpLength < options.MinLength)
{
var str = crsRandomSource.GetRandomElement(words);
strings.Add(str);
tmpLength += str.Length;
}
}
}
else
{
var left = (int)options.MaxLength - (int)options.DigitCount;
while (true)
{
var validWords = words.Where(o => o.Length <= left);
if (!validWords.Any())
{
break;
}
var str = crsRandomSource.GetRandomElement(validWords);
strings.Add(str);
left -= str.Length;
if (options.MinLength != 0 && options.MinLength <= options.MaxLength - left)
{
break;
}
}
}
//Permutate and concatenate
var permutation = crsRandomSource.GetRandomPermutation(strings);
return(new ProtectedString(true, string.Concat(permutation)));
}
