Beispiel #1
0
        public void TestFromBytes()
        {
            byte[] input1 = { 0 };
            Action action = () => ECPoint.FromBytes(input1, ECCurve.Secp256k1);

            action.Should().Throw <FormatException>();

            byte[] input2 = { 4,  121, 190, 102, 126, 249, 220, 187, 172,  85, 160, 98, 149, 206, 135,  11,  7,   2, 155, 252, 219, 45, 206,  40, 217,  89, 242, 129, 91,  22, 248, 23, 152, 72,
                              58, 218, 119,  38, 163, 196, 101,  93, 164, 251, 252, 14,  17,   8, 168, 253, 23, 180,  72, 166, 133, 84,  25, 156,  71, 208, 143, 251, 16, 212, 184 };
            ECPoint.FromBytes(input2, ECCurve.Secp256k1).Should().Be(ECCurve.Secp256k1.G);

            byte[] input3 = { 2, 121, 190, 102, 126, 249, 220, 187, 172, 85, 160, 98, 149, 206, 135, 11, 7, 2, 155, 252, 219, 45, 206, 40, 217, 89, 242, 129, 91, 22, 248, 23, 152 };
            ECPoint.FromBytes(input3, ECCurve.Secp256k1).Should().Be(ECCurve.Secp256k1.G);
            ECPoint.FromBytes(input2.Skip(1).ToArray(), ECCurve.Secp256k1).Should().Be(ECCurve.Secp256k1.G);

            byte[] input4 = GeneratePrivateKey(72);
            ECPoint.FromBytes(input4, ECCurve.Secp256k1).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("3634473727541135791764834762056624681715094789735830699031648" +
                                                                                                                     "273128038409767"), ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("18165245710263168158644330920009617039772504630129940696140050972160274286151"),
                                                                                                                                                                                ECCurve.Secp256k1), ECCurve.Secp256k1));

            byte[] input5 = GeneratePrivateKey(96);
            ECPoint.FromBytes(input5, ECCurve.Secp256k1).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("1780731860627700044960722568376592200742329637303199754547598" +
                                                                                                                     "369979440671"), ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("14532552714582660066924456880521368950258152170031413196862950297402215317055"),
                                                                                                                                                                             ECCurve.Secp256k1), ECCurve.Secp256k1));

            byte[] input6 = GeneratePrivateKey(104);
            ECPoint.FromBytes(input6, ECCurve.Secp256k1).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("3634473727541135791764834762056624681715094789735830699031648" +
                                                                                                                     "273128038409767"), ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("18165245710263168158644330920009617039772504630129940696140050972160274286151"),
                                                                                                                                                                                ECCurve.Secp256k1), ECCurve.Secp256k1));
        }
Beispiel #2
0
        public void TestOpMultiply()
        {
            ECPoint p = null;

            byte[] n      = new byte[] { 1 };
            Action action = () => p = p * n;

            action.Should().Throw <ArgumentNullException>();

            p = ECCurve.Secp256k1.G;
            n = null;
            action.Should().Throw <ArgumentNullException>();

            n = new byte[] { 1 };
            action.Should().Throw <ArgumentException>();

            p = ECCurve.Secp256k1.Infinity;
            n = new byte[32];
            (p * n).Should().Be(p);

            p = ECCurve.Secp256k1.G;
            (p * n).Should().Be(ECCurve.Secp256k1.Infinity);

            n[0] = 1;
            (p * n).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("63395642421589016740518975608504846303065672135176650115036476193363423546538"), ECCurve.Secp256k1),
                                            new ECFieldElement(BigInteger.Parse("29236048674093813394523910922582374630829081423043497254162533033164154049666"), ECCurve.Secp256k1), ECCurve.Secp256k1));
        }
Beispiel #3
0
        public void TestEncodePoint()
        {
            ECPoint point = new ECPoint(null, null, ECCurve.Secp256k1);

            byte[] result1 = { 0 };
            point.EncodePoint(true).Should().BeEquivalentTo(result1);

            point = ECCurve.Secp256k1.G;
            byte[] result2 = { 4,  121, 190, 102, 126, 249, 220, 187, 172,  85, 160, 98, 149, 206, 135,  11,  7,   2, 155, 252, 219, 45, 206,  40, 217,  89, 242, 129, 91,  22, 248, 23, 152, 72,
                               58, 218, 119,  38, 163, 196, 101,  93, 164, 251, 252, 14,  17,   8, 168, 253, 23, 180,  72, 166, 133, 84,  25, 156,  71, 208, 143, 251, 16, 212, 184 };
            point.EncodePoint(false).Should().BeEquivalentTo(result2);
            point.EncodePoint(false).Should().BeEquivalentTo(result2);

            byte[] result3 = { 2, 121, 190, 102, 126, 249, 220, 187, 172, 85, 160, 98, 149, 206, 135, 11, 7, 2, 155, 252, 219, 45, 206, 40, 217, 89, 242, 129, 91, 22, 248, 23, 152 };
            point.EncodePoint(true).Should().BeEquivalentTo(result3);
            point.EncodePoint(true).Should().BeEquivalentTo(result3);

            point = ECCurve.Secp256r1.G;
            byte[] result4 = { 3, 107, 23, 209, 242, 225, 44, 66, 71, 248, 188, 230, 229, 99, 164, 64, 242, 119, 3, 125, 129, 45, 235, 51, 160, 244, 161, 57, 69, 216, 152, 194, 150 };
            point.EncodePoint(true).Should().BeEquivalentTo(result4);
            point.EncodePoint(true).Should().BeEquivalentTo(result4);

            // Test cache

            point = ECPoint.DecodePoint(ECCurve.Secp256r1.G.EncodePoint(true), ECCurve.Secp256r1);
            point.EncodePoint(true).Should().BeEquivalentTo(result4);
            point.EncodePoint(true).Should().BeEquivalentTo(result4);

            byte[] result5 = "046b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c2964fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5".HexToBytes();
            point = ECPoint.DecodePoint(ECCurve.Secp256r1.G.EncodePoint(false), ECCurve.Secp256r1);
            point.EncodePoint(true).Should().BeEquivalentTo(result4);
            point.EncodePoint(true).Should().BeEquivalentTo(result4);
            point.EncodePoint(false).Should().BeEquivalentTo(result5);
            point.EncodePoint(false).Should().BeEquivalentTo(result5);
        }
Beispiel #4
0
        public void TestTryParse()
        {
            ECPoint.TryParse("00", ECCurve.Secp256k1, out ECPoint result).Should().BeFalse();
            result.Should().BeNull();

            ECPoint.TryParse("0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8", ECCurve.Secp256k1,
                             out result).Should().BeTrue();
            result.Should().Be(ECCurve.Secp256k1.G);
        }
Beispiel #5
0
        public void TestSerialize()
        {
            MemoryStream  stream       = new MemoryStream();
            ECPoint       point        = new ECPoint(null, null, ECCurve.Secp256k1);
            ISerializable serializable = point;

            serializable.Serialize(new BinaryWriter(stream));
            stream.ToArray().Should().BeEquivalentTo(new byte[] { 0 });
        }
Beispiel #6
0
        public void TestDeserialize()
        {
            ECPoint       point        = new ECPoint(null, null, ECCurve.Secp256k1);
            ISerializable serializable = point;

            byte[] input = { 4,  121, 190, 102, 126, 249, 220, 187, 172,  85, 160,  98, 149, 206, 135,  11,   7,  2, 155, 252, 219,  45, 206, 40, 217, 89, 242, 129,  91, 22, 248, 23, 152,
                             72,  58, 218, 119,  38, 163, 196, 101,  93, 164, 251, 252,  14,  17,   8, 168, 253, 23, 180,  72, 166, 133,  84, 25, 156, 71, 208, 143, 251, 16, 212, 184 };
            serializable.Deserialize(new BinaryReader(new MemoryStream(input)));
            point.X.Should().Be(ECCurve.Secp256k1.G.X);
            point.Y.Should().Be(ECCurve.Secp256k1.G.Y);
        }
Beispiel #7
0
        public void TestDeserializeFrom()
        {
            byte[] input1 = { 0 };
            Action action = () => ECPoint.DeserializeFrom(new BinaryReader(new MemoryStream(input1)), ECCurve.Secp256k1);

            action.Should().Throw <FormatException>();

            byte[] input2 = { 4,  121, 190, 102, 126, 249, 220, 187, 172,  85, 160, 98, 149, 206, 135,  11,  7,   2, 155, 252, 219, 45, 206,  40, 217,  89, 242, 129, 91,  22, 248, 23, 152, 72,
                              58, 218, 119,  38, 163, 196, 101,  93, 164, 251, 252, 14,  17,   8, 168, 253, 23, 180,  72, 166, 133, 84,  25, 156,  71, 208, 143, 251, 16, 212, 184 };
            ECPoint.DeserializeFrom(new BinaryReader(new MemoryStream(input2)), ECCurve.Secp256k1).Should().Be(ECCurve.Secp256k1.G);
            action = () => ECPoint.DeserializeFrom(new BinaryReader(new MemoryStream(input2.Take(32).ToArray())), ECCurve.Secp256k1).Should().Be(ECCurve.Secp256k1.G);
            action.Should().Throw <FormatException>();

            byte[] input3 = { 2, 121, 190, 102, 126, 249, 220, 187, 172, 85, 160, 98, 149, 206, 135, 11, 7, 2, 155, 252, 219, 45, 206, 40, 217, 89, 242, 129, 91, 22, 248, 23, 152 };
            ECPoint.DeserializeFrom(new BinaryReader(new MemoryStream(input3)), ECCurve.Secp256k1).Should().Be(ECCurve.Secp256k1.G);
            byte[] input4 = { 3, 107, 23, 209, 242, 225, 44, 66, 71, 248, 188, 230, 229, 99, 164, 64, 242, 119, 3, 125, 129, 45, 235, 51, 160, 244, 161, 57, 69, 216, 152, 194, 150 };
            ECPoint.DeserializeFrom(new BinaryReader(new MemoryStream(input4)), ECCurve.Secp256r1).Should().Be(ECCurve.Secp256r1.G);

            action = () => ECPoint.DeserializeFrom(new BinaryReader(new MemoryStream(input3.Take(input3.Length - 1).ToArray())), ECCurve.Secp256k1).Should().Be(ECCurve.Secp256k1.G);
            action.Should().Throw <FormatException>();
        }
Beispiel #8
0
        public void TestMultiply()
        {
            ECPoint    p = ECCurve.Secp256k1.G;
            BigInteger k = BigInteger.Parse("100");

            ECPoint.Multiply(p, k).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("107303582290733097924842193972465022053148211775194373671539518313500194639752"),
                                                                              ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("103795966108782717446806684023742168462365449272639790795591544606836007446638"), ECCurve.Secp256k1),
                                                           ECCurve.Secp256k1));

            k = BigInteger.Parse("10000");
            ECPoint.Multiply(p, k).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("55279067612272658004429375184716238028207484982037227804583126224321918234542"),
                                                                              ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("93139664895507357192565643142424306097487832058389223752321585898830257071353"), ECCurve.Secp256k1),
                                                           ECCurve.Secp256k1));

            k = BigInteger.Parse("10000000000000");
            ECPoint.Multiply(p, k).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("115045167963494515061513744671884131783397561769819471159495798754884242293003"),
                                                                              ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("93759167105263077270762304290738437383691912799231615884447658154878797241853"), ECCurve.Secp256k1),
                                                           ECCurve.Secp256k1));

            k = BigInteger.Parse("1000000000000000000000000000000000000000");
            ECPoint.Multiply(p, k).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("114831276968810911840931876895388845736099852671055832194631099067239418074350"),
                                                                              ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("16721517996619732311261078486295444964227498319433363271180755596201863690708"), ECCurve.Secp256k1),
                                                           ECCurve.Secp256k1));

            k = new BigInteger(GeneratePrivateKey(100));
            ECPoint.Multiply(p, k).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("19222995016448259376216431079553428738726180595337971417371897285865264889977"),
                                                                              ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("6637081904924493791520919212064582313497884724460823966446023080706723904419"), ECCurve.Secp256k1),
                                                           ECCurve.Secp256k1));

            k = new BigInteger(GeneratePrivateKey(120));
            ECPoint.Multiply(p, k).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("79652345192111851576650978679091010173409410384772942769927955775006682639778"),
                                                                              ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("6460429961979335115790346961011058418773289452368186110818621539624566803831"), ECCurve.Secp256k1),
                                                           ECCurve.Secp256k1));

            k = new BigInteger(GeneratePrivateKey(300));
            ECPoint.Multiply(p, k).Should().Be(new ECPoint(new ECFieldElement(BigInteger.Parse("105331914562708556186724786757483927866790351460145374033180496740107603569412"),
                                                                              ECCurve.Secp256k1), new ECFieldElement(BigInteger.Parse("60523670886755698512704385951571322569877668383890769288780681319304421873758"), ECCurve.Secp256k1),
                                                           ECCurve.Secp256k1));
        }
Beispiel #9
0
        public void TestECPointConstructor()
        {
            ECPoint point = new ECPoint();

            point.X.Should().BeNull();
            point.Y.Should().BeNull();
            point.Curve.Should().Be(ECCurve.Secp256r1);

            ECFieldElement X = new ECFieldElement(new BigInteger(100), ECCurve.Secp256k1);
            ECFieldElement Y = new ECFieldElement(new BigInteger(200), ECCurve.Secp256k1);

            point = new ECPoint(X, Y, ECCurve.Secp256k1);
            point.X.Should().Be(X);
            point.Y.Should().Be(Y);
            point.Curve.Should().Be(ECCurve.Secp256k1);
            Action action = () => new ECPoint(X, null, ECCurve.Secp256k1);

            action.Should().Throw <ArgumentException>();
            action = () => new ECPoint(null, Y, ECCurve.Secp256k1);
            action.Should().Throw <ArgumentException>();
            action = () => new ECPoint(null, Y, null);
            action.Should().Throw <ArgumentException>();
        }
Beispiel #10
0
        public void TestEquals()
        {
            ECPoint point = ECCurve.Secp256k1.G;

            point.Equals(point).Should().BeTrue();
            point.Equals(null).Should().BeFalse();

            point = new ECPoint(null, null, ECCurve.Secp256k1);
            point.Equals(new ECPoint(null, null, ECCurve.Secp256r1)).Should().BeTrue();
            point.Equals(ECCurve.Secp256r1.G).Should().BeFalse();
            ECCurve.Secp256r1.G.Equals(point).Should().BeFalse();

            ECFieldElement X1     = new ECFieldElement(new BigInteger(100), ECCurve.Secp256k1);
            ECFieldElement Y1     = new ECFieldElement(new BigInteger(200), ECCurve.Secp256k1);
            ECFieldElement X2     = new ECFieldElement(new BigInteger(300), ECCurve.Secp256k1);
            ECFieldElement Y2     = new ECFieldElement(new BigInteger(400), ECCurve.Secp256k1);
            ECPoint        point1 = new ECPoint(X1, Y1, ECCurve.Secp256k1);
            ECPoint        point2 = new ECPoint(X2, Y1, ECCurve.Secp256k1);
            ECPoint        point3 = new ECPoint(X1, Y2, ECCurve.Secp256k1);

            point1.Equals(point2).Should().BeFalse();
            point1.Equals(point3).Should().BeFalse();
        }