avt.DynamicFlashRotator.Net.RegCore.Cryptography.BigInteger.MulDivTest C# (CSharp) Method

MulDivTest() public static method

public static MulDivTest ( int rounds ) : void
rounds int
return void
        public static void MulDivTest(int rounds)
        {
            Random rand = new Random();
            byte[] val = new byte[64];
            byte[] val2 = new byte[64];

            for (int count = 0; count < rounds; count++) {
                // generate 2 numbers of random length
                int t1 = 0;
                while (t1 == 0)
                    t1 = (int)(rand.NextDouble() * 65);

                int t2 = 0;
                while (t2 == 0)
                    t2 = (int)(rand.NextDouble() * 65);

                bool done = false;
                while (!done) {
                    for (int i = 0; i < 64; i++) {
                        if (i < t1)
                            val[i] = (byte)(rand.NextDouble() * 256);
                        else
                            val[i] = 0;

                        if (val[i] != 0)
                            done = true;
                    }
                }

                done = false;
                while (!done) {
                    for (int i = 0; i < 64; i++) {
                        if (i < t2)
                            val2[i] = (byte)(rand.NextDouble() * 256);
                        else
                            val2[i] = 0;

                        if (val2[i] != 0)
                            done = true;
                    }
                }

                while (val[0] == 0)
                    val[0] = (byte)(rand.NextDouble() * 256);
                while (val2[0] == 0)
                    val2[0] = (byte)(rand.NextDouble() * 256);

                Console.WriteLine(count);
                BigInteger bn1 = new BigInteger(val, t1);
                BigInteger bn2 = new BigInteger(val2, t2);


                // Determine the quotient and remainder by dividing
                // the first number by the second.

                BigInteger bn3 = bn1 / bn2;
                BigInteger bn4 = bn1 % bn2;

                // Recalculate the number
                BigInteger bn5 = (bn3 * bn2) + bn4;

                // Make sure they're the same
                if (bn5 != bn1) {
                    Console.WriteLine("Error at " + count);
                    Console.WriteLine(bn1 + "\n");
                    Console.WriteLine(bn2 + "\n");
                    Console.WriteLine(bn3 + "\n");
                    Console.WriteLine(bn4 + "\n");
                    Console.WriteLine(bn5 + "\n");
                    return;
                }
            }
        }