public MqvPublicParameters( ECPublicKeyParameters staticPublicKey, ECPublicKeyParameters ephemeralPublicKey) { this.staticPublicKey = staticPublicKey; this.ephemeralPublicKey = ephemeralPublicKey; }
// The ECMQV Primitive as described in SEC-1, 3.4 private static ECPoint CalculateMqvAgreement( ECDomainParameters parameters, ECPrivateKeyParameters d1U, ECPrivateKeyParameters d2U, ECPublicKeyParameters Q2U, ECPublicKeyParameters Q1V, ECPublicKeyParameters Q2V) { BigInteger n = parameters.N; int e = (n.BitLength + 1) / 2; BigInteger powE = BigInteger.One.ShiftLeft(e); ECCurve curve = parameters.Curve; ECPoint[] points = new ECPoint[]{ // The Q2U public key is optional ECAlgorithms.ImportPoint(curve, Q2U == null ? parameters.G.Multiply(d2U.D) : Q2U.Q), ECAlgorithms.ImportPoint(curve, Q1V.Q), ECAlgorithms.ImportPoint(curve, Q2V.Q) }; curve.NormalizeAll(points); ECPoint q2u = points[0], q1v = points[1], q2v = points[2]; BigInteger x = q2u.AffineXCoord.ToBigInteger(); BigInteger xBar = x.Mod(powE); BigInteger Q2UBar = xBar.SetBit(e); BigInteger s = d1U.D.Multiply(Q2UBar).Add(d2U.D).Mod(n); BigInteger xPrime = q2v.AffineXCoord.ToBigInteger(); BigInteger xPrimeBar = xPrime.Mod(powE); BigInteger Q2VBar = xPrimeBar.SetBit(e); BigInteger hs = parameters.H.Multiply(s).Mod(n); return ECAlgorithms.SumOfTwoMultiplies( q1v, Q2VBar.Multiply(hs).Mod(n), q2v, hs); }
protected bool Equals( ECPublicKeyParameters other) { return(q.Equals(other.q) && base.Equals(other)); }
protected bool Equals( ECPublicKeyParameters other) { return q.Equals(other.q) && base.Equals(other); }