private void SecRandTest()
{
using (SecureRandom rnd = new SecureRandom())
{
double x1 = 0.0;
for (int i = 0; i < 1000; i++)
{
x1 = rnd.NextDouble();
if (x1 > 1.0)
throw new Exception("SecureRandom: NextDouble returned a value outside of the expected range.");
}
short x2 = 0;
for (int i = 0; i < 1000; i++)
{
x2 = rnd.NextInt16(1, 6);
if (x2 > 6)
throw new Exception("SecureRandom: NextInt16 returned a value outside of the expected range.");
if (x2 < 1)
throw new Exception("SecureRandom: NextInt16 returned a value outside of the expected range.");
}
ushort x3 = 0;
for (int i = 0; i < 1000; i++)
{
x3 = rnd.NextUInt16(1, 52);
if (x3 > 52)
throw new Exception("SecureRandom: NextUInt16 returned a value outside of the expected range.");
if (x3 < 1)
throw new Exception("SecureRandom: NextUInt16 returned a value outside of the expected range.");
}
int x4 = 0;
for (int i = 0; i < 1000; i++)
{
x4 = rnd.NextInt32(3371, 16777216);
if (x4 > 16777216)
throw new Exception("SecureRandom: NextInt32 returned a value outside of the expected range.");
if (x4 < 3371)
throw new Exception("SecureRandom: NextInt32 returned a value outside of the expected range.");
}
uint x5 = 0;
for (int i = 0; i < 1000; i++)
{
x5 = rnd.NextUInt32(77721, 777216);
if (x5 > 777216)
throw new Exception("SecureRandom: NextUInt32 returned a value outside of the expected range.");
if (x5 < 77721)
throw new Exception("SecureRandom: NextUInt32 returned a value outside of the expected range.");
}
long x6 = 0;
for (int i = 0; i < 1000; i++)
{
x6 = rnd.NextInt64(2814749767, 281474976710653);
if (x6 > 281474976710656)
throw new Exception("SecureRandom: NextInt64 returned a value outside of the expected range.");
if (x6 < 2814749767)
throw new Exception("SecureRandom: NextInt64 returned a value outside of the expected range.");
}
ulong x7 = 0;
for (int i = 0; i < 1000; i++)
{
x7 = rnd.NextUInt64(5759403792, 72057594037927934);
if (x7 > 72057594037927936)
throw new Exception("SecureRandom: NextUInt64 returned a value outside of the expected range.");
if (x7 < 5759403792)
throw new Exception("SecureRandom: NextUInt64 returned a value outside of the expected range.");
}
}
}
/// <summary>
/// A random number is generated until a probable prime number is found
/// </summary>
internal static BigInteger ConsBigInteger(int BitLength, int Certainty, SecureRandom Rnd)
{
// PRE: bitLength >= 2;
// For small numbers get a random prime from the prime table
if (BitLength <= 10)
{
int[] rp = _offsetPrimes[BitLength];
return _biPrimes[rp[0] + Rnd.NextInt32(rp[1])];
}
int shiftCount = (-BitLength) & 31;
int last = (BitLength + 31) >> 5;
BigInteger n = new BigInteger(1, last, new int[last]);
last--;
do
{// To fill the array with random integers
for (int i = 0; i < n._numberLength; i++)
n._digits[i] = Rnd.Next();
// To fix to the correct bitLength
// n.digits[last] |= 0x80000000;
n._digits[last] |= Int32.MinValue;
n._digits[last] = IntUtils.URShift(n._digits[last], shiftCount);
// To create an odd number
n._digits[0] |= 1;
} while (!IsProbablePrime(n, Certainty));
return n;
}