C# (CSharp) Org.BouncyCastle.Math.BigInteger.IsProbablePrime Exemples

Exemple #1

        static public Org.BouncyCastle.Math.BigInteger GenerateBigIntegerPrimes(int bits)
        {
            Org.BouncyCastle.Security.SecureRandom ran = new Org.BouncyCastle.Security.SecureRandom();
            Org.BouncyCastle.Math.BigInteger       c   = new Org.BouncyCastle.Math.BigInteger(bits, ran);

            for (; ;)
            {
                if (c.IsProbablePrime(100) == true)
                {
                    break;
                }
                c = c.Subtract(new Org.BouncyCastle.Math.BigInteger("1"));
            }
            return(c);
        }

Exemple #2

        static public Org.BouncyCastle.Math.BigInteger genpr2(int bits, long initialRand)
        {
#pragma warning disable CS0618 // Type or member is obsolete
            Org.BouncyCastle.Security.SecureRandom ran = new Org.BouncyCastle.Security.SecureRandom(
                new Org.BouncyCastle.Math.BigInteger(initialRand.ToString()).ToByteArray());
#pragma warning restore CS0618 // Type or member is obsolete

            Org.BouncyCastle.Math.BigInteger c = new Org.BouncyCastle.Math.BigInteger(bits, ran);

            for (;;)
            {
                if (c.IsProbablePrime(1) == true)
                {
                    break;
                }

                c = c.Subtract(new Org.BouncyCastle.Math.BigInteger("1"));
            }
            return(c);
        }