public void Multiply2()
        {
            byte[] bobsk =
            {
                0x5d, 0xab, 0x08, 0x7e, 0x62, 0x4a, 0x8a,     0x4b
                ,     0x79, 0xe1, 0x7f, 0x8b, 0x83, 0x80, 0x0e, 0xe6
                ,     0x6f, 0x3b, 0xb1, 0x29, 0x26, 0x18, 0xb6, 0xfd
                ,     0x1c, 0x2f, 0x8b, 0x27, 0xff, 0x88, 0xe0, 0xeb
            };

            byte[] alicepk =
            {
                0x85, 0x20, 0xf0, 0x09, 0x89, 0x30, 0xa7,     0x54
                ,     0x74, 0x8b, 0x7d, 0xdc, 0xb4, 0x3e, 0xf7, 0x5a
                ,     0x0d, 0xbf, 0x3a, 0x0d, 0x26, 0x38, 0x1a, 0xf4
                ,     0xeb, 0xa4, 0xa9, 0x8e, 0xaa, 0x9b, 0x4e, 0x6a
            };

            byte[] k = new byte[32];

            ScalarMultiplication64.Multiply(k, bobsk, alicepk);

            Assert.IsTrue(Enumerable.SequenceEqual(k, new byte[]
            {
                0x4a, 0x5d, 0x9d, 0x5b, 0xa4, 0xce, 0x2d, 0xe1
                , 0x72, 0x8e, 0x3b, 0xf4, 0x80, 0x35, 0x0f, 0x25
                , 0xe0, 0x7e, 0x21, 0xc9, 0x47, 0xd1, 0x9e, 0x33
                , 0x76, 0xf0, 0x9b, 0x3c, 0x1e, 0x16, 0x17, 0x42
            }));
        }
        public void Curve25519Test2()
        {
            byte[] p1 =
            {
                0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
                0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
            };

            byte[] p2 =
            {
                0x25, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
            };

            byte[] scalar = new byte[32];
            byte[] out1   = new byte[32];
            byte[] out2   = new byte[32];

            ScalarMultiplication64.Multiply(out1, scalar, p1);
            ScalarMultiplication64.Multiply(out2, scalar, p2);

            Assert.IsTrue(out1.SequenceEqual(out2));
        }
        public void Multiply1()
        {
            byte[] alicesk =
            {
                0x77, 0x07, 0x6d, 0x0a, 0x73, 0x18, 0xa5,     0x7d
                ,     0x3c, 0x16, 0xc1, 0x72, 0x51, 0xb2, 0x66, 0x45
                ,     0xdf, 0x4c, 0x2f, 0x87, 0xeb, 0xc0, 0x99, 0x2a
                ,     0xb1, 0x77, 0xfb, 0xa5, 0x1d, 0xb9, 0x2c, 0x2a
            };

            byte[] bobpk =
            {
                0xde, 0x9e, 0xdb, 0x7d, 0x7b, 0x7d, 0xc1,     0xb4
                ,     0xd3, 0x5b, 0x61, 0xc2, 0xec, 0xe4, 0x35, 0x37
                ,     0x3f, 0x83, 0x43, 0xc8, 0x5b, 0x78, 0x67, 0x4d
                ,     0xad, 0xfc, 0x7e, 0x14, 0x6f, 0x88, 0x2b, 0x4f
            };

            byte[] k = new byte[32];

            ScalarMultiplication64.Multiply(k, alicesk, bobpk);

            Assert.IsTrue(Enumerable.SequenceEqual(k, new byte[]
            {
                0x4a, 0x5d, 0x9d, 0x5b, 0xa4, 0xce, 0x2d, 0xe1
                , 0x72, 0x8e, 0x3b, 0xf4, 0x80, 0x35, 0x0f, 0x25
                , 0xe0, 0x7e, 0x21, 0xc9, 0x47, 0xd1, 0x9e, 0x33
                , 0x76, 0xf0, 0x9b, 0x3c, 0x1e, 0x16, 0x17, 0x42
            }));
        }
        public void Curve25519Test1()
        {
            byte[] p1 =
            {
                0x72, 0x20, 0xf0, 0x09, 0x89, 0x30, 0xa7, 0x54,
                0x74, 0x8b, 0x7d, 0xdc, 0xb4, 0x3e, 0xf7, 0x5a,
                0x0d, 0xbf, 0x3a, 0x0d, 0x26, 0x38, 0x1a, 0xf4,
                0xeb, 0xa4, 0xa9, 0x8e, 0xaa, 0x9b, 0x4e, 0xea
            };

            byte[] p2 =
            {
                0x85, 0x20, 0xf0, 0x09, 0x89, 0x30, 0xa7, 0x54,
                0x74, 0x8b, 0x7d, 0xdc, 0xb4, 0x3e, 0xf7, 0x5a,
                0x0d, 0xbf, 0x3a, 0x0d, 0x26, 0x38, 0x1a, 0xf4,
                0xeb, 0xa4, 0xa9, 0x8e, 0xaa, 0x9b, 0x4e, 0x6a
            };

            byte[] scalar = new byte[32];
            byte[] out1   = new byte[32];
            byte[] out2   = new byte[32];

            ScalarMultiplication64.Multiply(out1, scalar, p1);
            ScalarMultiplication64.Multiply(out2, scalar, p2);

            Assert.IsTrue(out1.SequenceEqual(out2));
        }