BigInteger.RSATest2 C# (CSharp) Method

RSATest2() public static method

public static RSATest2 ( int rounds ) : void
rounds int
return void
        public static void RSATest2(int rounds)
        {
                Random rand = new Random();
	        byte[] val = new byte[64];

                byte[] pseudoPrime1 = {
                        (byte)0x85, (byte)0x84, (byte)0x64, (byte)0xFD, (byte)0x70, (byte)0x6A,
                        (byte)0x9F, (byte)0xF0, (byte)0x94, (byte)0x0C, (byte)0x3E, (byte)0x2C,
                        (byte)0x74, (byte)0x34, (byte)0x05, (byte)0xC9, (byte)0x55, (byte)0xB3,
                        (byte)0x85, (byte)0x32, (byte)0x98, (byte)0x71, (byte)0xF9, (byte)0x41,
                        (byte)0x21, (byte)0x5F, (byte)0x02, (byte)0x9E, (byte)0xEA, (byte)0x56,
                        (byte)0x8D, (byte)0x8C, (byte)0x44, (byte)0xCC, (byte)0xEE, (byte)0xEE,
                        (byte)0x3D, (byte)0x2C, (byte)0x9D, (byte)0x2C, (byte)0x12, (byte)0x41,
                        (byte)0x1E, (byte)0xF1, (byte)0xC5, (byte)0x32, (byte)0xC3, (byte)0xAA,
                        (byte)0x31, (byte)0x4A, (byte)0x52, (byte)0xD8, (byte)0xE8, (byte)0xAF,
                        (byte)0x42, (byte)0xF4, (byte)0x72, (byte)0xA1, (byte)0x2A, (byte)0x0D,
                        (byte)0x97, (byte)0xB1, (byte)0x31, (byte)0xB3,
                };

                byte[] pseudoPrime2 = {
                        (byte)0x99, (byte)0x98, (byte)0xCA, (byte)0xB8, (byte)0x5E, (byte)0xD7,
                        (byte)0xE5, (byte)0xDC, (byte)0x28, (byte)0x5C, (byte)0x6F, (byte)0x0E,
                        (byte)0x15, (byte)0x09, (byte)0x59, (byte)0x6E, (byte)0x84, (byte)0xF3,
                        (byte)0x81, (byte)0xCD, (byte)0xDE, (byte)0x42, (byte)0xDC, (byte)0x93,
                        (byte)0xC2, (byte)0x7A, (byte)0x62, (byte)0xAC, (byte)0x6C, (byte)0xAF,
                        (byte)0xDE, (byte)0x74, (byte)0xE3, (byte)0xCB, (byte)0x60, (byte)0x20,
                        (byte)0x38, (byte)0x9C, (byte)0x21, (byte)0xC3, (byte)0xDC, (byte)0xC8,
                        (byte)0xA2, (byte)0x4D, (byte)0xC6, (byte)0x2A, (byte)0x35, (byte)0x7F,
                        (byte)0xF3, (byte)0xA9, (byte)0xE8, (byte)0x1D, (byte)0x7B, (byte)0x2C,
                        (byte)0x78, (byte)0xFA, (byte)0xB8, (byte)0x02, (byte)0x55, (byte)0x80,
                        (byte)0x9B, (byte)0xC2, (byte)0xA5, (byte)0xCB,
                };


                BigInteger bi_p = new BigInteger(pseudoPrime1);
                BigInteger bi_q = new BigInteger(pseudoPrime2);
                BigInteger bi_pq = (bi_p-1)*(bi_q-1);
                BigInteger bi_n = bi_p * bi_q;

	        for(int count = 0; count < rounds; count++)
	        {
	                // generate private and public key
                        BigInteger bi_e = bi_pq.genCoPrime(512, rand);
                        BigInteger bi_d = bi_e.modInverse(bi_pq);

                        Console.WriteLine("\ne =\n" + bi_e.ToString(10));
                        Console.WriteLine("\nd =\n" + bi_d.ToString(10));
                        Console.WriteLine("\nn =\n" + bi_n.ToString(10) + "\n");

	                // generate data of random length
		        int t1 = 0;
		        while(t1 == 0)
			        t1 = (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;
			        }
		        }

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

                        Console.Write("Round = " + count);

                        // encrypt and decrypt data
		        BigInteger bi_data = new BigInteger(val, t1);
                        BigInteger bi_encrypted = bi_data.modPow(bi_e, bi_n);
                        BigInteger bi_decrypted = bi_encrypted.modPow(bi_d, bi_n);

                        // compare
                        if(bi_decrypted != bi_data)
	        	{
		        	Console.WriteLine("\nError at round " + count);
                                Console.WriteLine(bi_data + "\n");
			        return;
		        }
		        Console.WriteLine(" <PASSED>.");
	        }

        }