public static IList <T> ShuffleCryptographically <T>(this IList <T> list, RandomNumberGenerator randomNumberGenerator = null, bool doNotDispose = false)
{
try
{
if (list is null)
{
throw new ArgumentNullException(nameof(list));
}
if (randomNumberGenerator == null)
{
randomNumberGenerator = RandomNumberGenerator.Create();
}
using (var random = new CryptoRandom(randomNumberGenerator, doNotDispose))
{
return(ShuffleInternally(list, (min, max) =>
{
int i;
do
{
random.TryNext <int>(out i);
if (i == int.MaxValue)
{
i = 0;
}
i = Math.Abs(i);
} while (i == int.MaxValue);
int diff = max - min;
int part = int.MaxValue / diff;
int value = i / part;
return value + min;
}));
}
}
finally
{
if (!doNotDispose)
{
randomNumberGenerator?.Dispose();
}
}
}