public void PrimesGeneratorTestMethod() { var pluginInstance = TestHelpers.GetPluginInstance("PrimesGenerator"); var scenario = new PluginTestScenario(pluginInstance, new[] { "n", ".Mode" }, new[] { "OutputString" }); foreach (TestVector vector in testvectors) { if (vector.mode <= 2) { for (int i = 0; i < vector.count; i++) { object[] output = scenario.GetOutputs(new object[] { vector.input, vector.mode }); Assert.IsTrue(BigIntegerHelper.IsProbablePrime((BigInteger)output[0]), (BigInteger)output[0] + " is not a prime number in test #" + vector.n + "."); } } else { object[] output = scenario.GetOutputs(new object[] { vector.input, vector.mode }); Assert.AreEqual(vector.output, output[0], "Unexpected value in test #" + vector.n + "."); } } }
private void DoCalculateGoldbach(object o) { if (o == null || o.GetType() != typeof(PrimesBigInteger)) { return; } PrimesBigInteger value = o as PrimesBigInteger; if (value.Mod(PrimesBigInteger.Two).Equals(PrimesBigInteger.One)) // value is odd { ControlHandler.SetPropertyValue(lblGoldbachInfoCalc, "Text", string.Format(Distribution.numberline_isodd, value)); ControlHandler.SetPropertyValue(gbGoldbach, "Visibility", Visibility.Collapsed); } else if (value.Equals(PrimesBigInteger.Two)) // value = 2 { ControlHandler.SetPropertyValue(lblGoldbachInfoCalc, "Text", Distribution.numberline_istwo); ControlHandler.SetPropertyValue(gbGoldbach, "Visibility", Visibility.Collapsed); } else // value is even and not prime { int counter = 0; int maxlines = 1000; if (!value.IsProbablePrime(10)) { long x = value.LongValue; int i = 0; long sum1 = PrimeNumbers.primes[i]; while (sum1 <= x / 2) { long sum2 = x - sum1; if (BigIntegerHelper.IsProbablePrime(sum2)) //if (PrimeNumbers.isprime.Contains(sum2)) { counter++; if (counter < maxlines) { logGoldbach.Info(string.Format("{0} + {1} ", sum1, sum2)); } else if (counter == maxlines) { logGoldbach.Info(string.Format(Distribution.numberline_goldbachmaxlines, maxlines)); } if (counter % 50 == 0) { string fmt = (counter == 1) ? Distribution.numberline_goldbachfoundsum : Distribution.numberline_goldbachfoundsums; ControlHandler.SetPropertyValue(lblGoldbachInfoCalc, "Text", string.Format(fmt, counter, value)); } } sum1 = (++i < PrimeNumbers.primes.Length) ? PrimeNumbers.primes[i] : (long)BigIntegerHelper.NextProbablePrime(sum1 + 1); } string fmt1 = (counter == 1) ? Distribution.numberline_goldbachfoundsum : Distribution.numberline_goldbachfoundsums; ControlHandler.SetPropertyValue(lblGoldbachInfoCalc, "Text", string.Format(fmt1, counter, value)); ControlHandler.SetPropertyValue(gbGoldbach, "Visibility", goldbachIsOpen ? Visibility.Visible : Visibility.Collapsed); } } if (GoldbachDone != null) { GoldbachDone(); } }
/// <summary> /// Called by the environment to start generating of public/private keys /// </summary> public void Execute() { BigInteger p; BigInteger q; BigInteger n; BigInteger e; BigInteger d; ProgressChanged(0.0, 1.0); switch (settings.Source) { // manual case 0: try { p = BigIntegerHelper.ParseExpression(settings.P); q = BigIntegerHelper.ParseExpression(settings.Q); e = BigIntegerHelper.ParseExpression(settings.E); if (!BigIntegerHelper.IsProbablePrime(p)) { GuiLogMessage(p.ToString() + " is not prime!", NotificationLevel.Error); return; } if (!BigIntegerHelper.IsProbablePrime(q)) { GuiLogMessage(q.ToString() + " is not prime!", NotificationLevel.Error); return; } if (p == q) { GuiLogMessage("The primes P and Q can not be equal!", NotificationLevel.Error); return; } } catch (Exception ex) { GuiLogMessage("Invalid Big Number input: " + ex.Message, NotificationLevel.Error); return; } try { D = BigIntegerHelper.ModInverse(e, (p - 1) * (q - 1)); } catch (Exception) { GuiLogMessage("RSAKeyGenerator Error: E (" + e + ") can not be inverted.", NotificationLevel.Error); return; } try { N = p * q; E = e; } catch (Exception ex) { GuiLogMessage("Big Number fail: " + ex.Message, NotificationLevel.Error); return; } break; case 1: try { n = BigIntegerHelper.ParseExpression(settings.N); d = BigIntegerHelper.ParseExpression(settings.D); e = BigIntegerHelper.ParseExpression(settings.E); } catch (Exception ex) { GuiLogMessage("Invalid Big Number input: " + ex.Message, NotificationLevel.Error); return; } try { N = n; E = e; D = d; } catch (Exception ex) { GuiLogMessage("Big Number fail: " + ex.Message, NotificationLevel.Error); return; } break; //randomly generated case 2: try { n = BigInteger.Parse(this.settings.Range); switch (this.settings.RangeType) { case 0: // n = number of bits for primes if ((int)n <= 2) { GuiLogMessage("Value for n has to be greater than 2.", NotificationLevel.Error); return; } if (n >= 1024) { GuiLogMessage("Please note that the generation of prime numbers with " + n + " bits may take some time...", NotificationLevel.Warning); } // calculate the number of expected tries for the indeterministic prime number generation using the density of primes in the given region BigInteger limit = ((BigInteger)1) << (int)n; limittries = (int)(BigInteger.Log(limit) / 6); expectedtries = 2 * limittries; tries = 0; p = this.RandomPrimeBits((int)n); tries = limittries; limittries = expectedtries; do { q = this.RandomPrimeBits((int)n); } while (p == q); break; case 1: // n = upper limit for primes default: if (n <= 4) { GuiLogMessage("Value for n has to be greater than 4", NotificationLevel.Error); return; } p = BigIntegerHelper.RandomPrimeLimit(n + 1); ProgressChanged(0.5, 1.0); do { q = BigIntegerHelper.RandomPrimeLimit(n + 1); } while (p == q); break; } } catch { GuiLogMessage("Please enter an integer value for n.", NotificationLevel.Error); return; } BigInteger phi = (p - 1) * (q - 1); // generate E for the given values of p and q bool found = false; foreach (var ee in new BigInteger[] { 3, 5, 7, 11, 17, 65537 }) { if (ee < phi && ee.GCD(phi) == 1) { E = ee; found = true; break; } } if (!found) { for (int i = 0; i < 1000; i++) { e = BigIntegerHelper.RandomIntLimit(phi); if (e >= 2 && e.GCD(phi) == 1) { E = e; found = true; break; } } } if (!found) { GuiLogMessage("Could not generate a valid E for p=" + p + " and q=" + q + ".", NotificationLevel.Error); return; } N = p * q; D = BigIntegerHelper.ModInverse(E, phi); break; //using x509 certificate case 3: try { X509Certificate2 cert; RSAParameters par; if (this.settings.Password != "") { GuiLogMessage("Password entered. Try getting public and private key", NotificationLevel.Info); cert = new X509Certificate2(settings.CertificateFile, settings.Password, X509KeyStorageFlags.Exportable); if (cert == null || cert.PrivateKey == null) { throw new Exception("Private Key of X509Certificate could not be fetched"); } RSACryptoServiceProvider provider = (RSACryptoServiceProvider)cert.PrivateKey; par = provider.ExportParameters(true); } else { GuiLogMessage("No Password entered. Try loading public key only", NotificationLevel.Info); cert = new X509Certificate2(settings.CertificateFile); if (cert == null || cert.PublicKey == null || cert.PublicKey.Key == null) { throw new Exception("Private Key of X509Certificate could not be fetched"); } RSACryptoServiceProvider provider = (RSACryptoServiceProvider)cert.PublicKey.Key; par = provider.ExportParameters(false); } try { N = new BigInteger(par.Modulus); } catch (Exception ex) { GuiLogMessage("Could not get N from certificate: " + ex.Message, NotificationLevel.Warning); } try { E = new BigInteger(par.Exponent); } catch (Exception ex) { GuiLogMessage("Could not get E from certificate: " + ex.Message, NotificationLevel.Warning); } try { if (this.settings.Password != "") { D = new BigInteger(par.D); } else { D = 0; } } catch (Exception ex) { GuiLogMessage("Could not get D from certificate: " + ex.Message, NotificationLevel.Warning); } } catch (Exception ex) { GuiLogMessage("Could not load the selected certificate: " + ex.Message, NotificationLevel.Error); } break; } ProgressChanged(1.0, 1.0); }
/// <summary> /// Called by the environment to start generating of public/private keys /// </summary> public void Execute() { BigInteger p = 1, q = 1; ProgressChanged(0, 1); switch (settings.Source) { // manually enter primes case 0: try { p = BigIntegerHelper.ParseExpression(settings.P); q = BigIntegerHelper.ParseExpression(settings.Q); if (!BigIntegerHelper.IsProbablePrime(p)) { GuiLogMessage(p.ToString() + " is not prime!", NotificationLevel.Error); return; } if (!BigIntegerHelper.IsProbablePrime(q)) { GuiLogMessage(q.ToString() + " is not prime!", NotificationLevel.Error); return; } if (p == q) { GuiLogMessage("The primes P and Q can not be equal!", NotificationLevel.Error); return; } } catch (Exception ex) { GuiLogMessage("Invalid Big Number input: " + ex.Message, NotificationLevel.Error); return; } break; //randomly generated primes case 1: try { int keyBitLength = Convert.ToInt32(settings.KeyBitLength); if (keyBitLength < 4) { GuiLogMessage("The keylength must be greater than 3.", NotificationLevel.Error); return; } int i, maxtries = 10; for (i = 0; i < maxtries; i++) { p = BigIntegerHelper.RandomPrimeMSBSet(keyBitLength - (keyBitLength / 2)); q = BigIntegerHelper.RandomPrimeMSBSet(keyBitLength / 2); //GuiLogMessage("p = " + p.ToString(), NotificationLevel.Info); //GuiLogMessage("q = " + q.ToString(), NotificationLevel.Info); if (p != q) { break; } } if (i == maxtries) { throw new Exception("Could not create two differing primes"); } } catch (Exception ex) { GuiLogMessage(ex.Message, NotificationLevel.Error); return; } break; default: throw new Exception("Illegal Key Generation Mode"); } N = p * q; G = N + 1; Lambda = (p - 1) * (q - 1); ProgressChanged(1, 1); }
private void generateKeys(int k, int t, int l, BigInteger ownu) { if (l < 8 || l > 16) { throw new Exception("Choose parameter l from the interval 8<=l<=16 !"); } if (t <= l) { throw new Exception("Parameter t must be greater than l."); } if (k <= t) { throw new Exception("Parameter k must be greater than t."); } if (k % 2 != 0) { throw new Exception("Parameter k has to be an even number!"); } //if ((k / 2 < (l + 5)) || (k / 2 < t + 2)) // throw new Exception("Parameter k has to be specified by the rules k/2 > l+4 and k/2 > t+1!"); if (k / 2 < l + t + 10) { throw new Exception("Choose parameters k,l,t so that k/2 >= l+t+10 !"); } // generate u the minimal prime number greater than l+2 //Workaround, TODO: //u = (l == 0) ? ownu : BigIntegerHelper.NextProbablePrime(l + l + 2); u = BigIntegerHelper.NextProbablePrime((1 << l) + 2); // generate vp, vq as a random t bit prime number vp = BigIntegerHelper.RandomPrimeBits(t); vq = BigIntegerHelper.RandomPrimeBits(t); // store the product vp*vq vpvq = vp * vq; // DGK style to generate p and q from u and v: // p is chosen as rp * u * vp + 1 where r_p is randomly chosen such that p has roughly k/2 bits BigInteger rp, rq, tmp; int needed_bits; tmp = u * vp; needed_bits = k / 2 - (int)Math.Ceiling(BigInteger.Log(tmp, 2)); //int needed_bits = k / 2 - mpz_sizeinbase(tmp1, 2); do { rp = BigIntegerHelper.RandomIntMSBSet(needed_bits - 1) * 2; p = rp * tmp + 1; } while (!BigIntegerHelper.IsProbablePrime(p)); // q is chosen as rq * u*vq + 1 where rq is randomly chosen such that q has roughly k/2 bits tmp = u * vq; needed_bits = k / 2 - (int)Math.Ceiling(BigInteger.Log(tmp, 2)); do { rq = BigIntegerHelper.RandomIntMSBSet(needed_bits - 1) * 2; q = rq * tmp + 1; } while (!BigIntegerHelper.IsProbablePrime(q)); // RSA modulus n N = p * q; /* * h must be random in Zn* and have order vp*vq. We * choose it by setting * * h = h' ^{rp * rq * u}. * * Seeing h as (hp, hq) and h' as (h'p, h'q) in Zp* x Zq*, we * then have * * (hp^vpvq, hq^vpvq) = (h'p^{rp*u*vp}^(rq*vq), h'q^{rq*u*vq}^(rp*vp)) * = (1^(rq*vq), 1^(rp*vp)) = (1, 1) * * which means that h^(vpvq) = 1 in Zn*. * * So we only need to check that h is not 1 and that it really * is in Zn*. */ BigInteger r; tmp = rp * rq * u; while (true) { r = BigIntegerHelper.RandomIntLimit(n); h = BigInteger.ModPow(r, tmp, n); if (h == 1) { continue; } if (BigInteger.GreatestCommonDivisor(h, n) == 1) { break; } } /* * g is chosen at random in Zn* such that it has order uv. This * is done in much the same way as for h, but the order of * power of the random number might be u, v or uv. We therefore * also check that g^u and g^v are different from 1. */ BigInteger rprq = rp * rq; while (true) { r = BigIntegerHelper.RandomIntLimit(n); g = BigInteger.ModPow(r, rprq, n); // test if g is "good": if (g == 1) { continue; } if (BigInteger.GreatestCommonDivisor(g, n) != 1) { continue; } if (BigInteger.ModPow(g, u, n) == 1) { continue; // test if ord(g) == u } if (BigInteger.ModPow(g, vp, n) == 1) { continue; // test if ord(g) == vp } if (BigInteger.ModPow(g, vq, n) == 1) { continue; // test if ord(g) == vq } if (BigInteger.ModPow(g, u * vp, n) == 1) { continue; // test if ord(g) == u*vp } if (BigInteger.ModPow(g, u * vq, n) == 1) { continue; // test if ord(g) == u*vq } if (BigInteger.ModPow(g, vpvq, n) == 1) { continue; // test if ord(g) == vp*vq } break; // g has passed all tests } }