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];
ScalarMultiplication32.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
}));
}
static private void ScalarMultiplication32Test()
{
byte[] key = new byte[32];
for (int i = 0; i < 32; i++)
{
key[i] = 42;
}
byte[] result = new byte[32];
const int iterations = 100;
// load the caches
for (int i = 0; i < 100; i++)
{
ScalarMultiplication32.MultiplyBase(result, key);
}
Stopwatch stopwatch = Stopwatch.StartNew();
for (int i = 0; i < iterations; i++)
{
ScalarMultiplication32.MultiplyBase(result, key);
}
stopwatch.Stop();
PrintPerformance("ScalarMult32", stopwatch.ElapsedMilliseconds, iterations);
}
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];
ScalarMultiplication32.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 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];
ScalarMultiplication32.Multiply(out1, scalar, p1);
ScalarMultiplication32.Multiply(out2, scalar, p2);
Assert.IsTrue(out1.SequenceEqual(out2));
}
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];
ScalarMultiplication32.Multiply(out1, scalar, p1);
ScalarMultiplication32.Multiply(out2, scalar, p2);
Assert.IsTrue(out1.SequenceEqual(out2));
}
public void MultiplyBase1()
{
byte[] alicesk = new byte[] {
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[] alicepk = new byte[32];
ScalarMultiplication32.MultiplyBase(alicepk, alicesk);
Assert.IsTrue(Enumerable.SequenceEqual(alicepk, new byte[]
{
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
}));
}
public void MultiplyBase2()
{
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[] bobpk = new byte[32];
ScalarMultiplication32.MultiplyBase(bobpk, bobsk);
Assert.IsTrue(Enumerable.SequenceEqual(bobpk, new byte[]
{
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
}));
}