public void testEcDh()
{
byte[] p = new byte[32];
byte[] q = null;
byte[] n = new byte[32];
p[0] = 100;
n[0] = 100;
n = curve25519.generatePrivateKey(n);
for (int count = 0; count < 1000; count++)
{
q = curve25519.calculateAgreement(n, p);
Array.Copy(q, 0, p, 0, 32);
q = curve25519.calculateAgreement(n, p);
Array.Copy(q, 0, n, 0, 32);
n = curve25519.generatePrivateKey(n);
}
byte[] result = new byte[] {
(byte)0xce, (byte)0xb4, (byte)0x4e, (byte)0xd6, (byte)0x4a,
(byte)0xd4, (byte)0xc2, (byte)0xb5, (byte)0x43, (byte)0x9d,
(byte)0x25, (byte)0xde, (byte)0xb1, (byte)0x10, (byte)0xa8,
(byte)0xd7, (byte)0x2e, (byte)0xb3, (byte)0xe3, (byte)0x8e,
(byte)0xf4, (byte)0x8a, (byte)0x42, (byte)0x73, (byte)0xb1,
(byte)0x1b, (byte)0x4b, (byte)0x13, (byte)0x8d, (byte)0x17,
(byte)0xf9, (byte)0x34
};
List <byte> qList = new List <byte>(q);
List <byte> resultList = new List <byte>(result);
CollectionAssert.AreEqual(resultList, qList);
}
public void TestGenPrivKeyFromRandom()
{
byte[] randomBuffer = GetRandomBuffer(EXPECTED_LEN);
byte[] privKeyBytes = curve25519.generatePrivateKey(randomBuffer);
Assert.IsNotNull(privKeyBytes);
Assert.AreEqual(EXPECTED_LEN, privKeyBytes.Length,
"This implementation should produce 32 byte private keys.");
bool allZero = true;
//force fail to test this logic
//privKeyBytes = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
foreach (byte b in privKeyBytes)
{
if (!allZero)
{
break; //early
}
if (b.CompareTo(0) != 0)
{
allZero = false;
}
}
Assert.IsFalse(allZero, "A private key shouldn't be all zeroes.");
}
public void TestECPublicKeyEquals()
{
curve25519.Curve25519Native native = new curve25519.Curve25519Native();
byte[] privKey = native.generatePrivateKey();
byte[] pubKey = native.generatePublicKey(privKey);
DjbECPublicKey key1 = new DjbECPublicKey(pubKey);
byte[] pubKey2 = native.generatePublicKey(privKey);
Assert.IsTrue(StructuralComparisons.StructuralEqualityComparer.Equals(
pubKey, pubKey2));
DjbECPublicKey key2 = new DjbECPublicKey(pubKey2);
Assert.IsTrue(key1.Equals(key2));
int hash1 = key1.GetHashCode();
int hash2 = key2.GetHashCode();
Assert.AreEqual<int>(hash1, hash2);
}
public void TestECPublicKeyEquals()
{
curve25519.Curve25519Native native = new curve25519.Curve25519Native();
byte[] privKey = native.generatePrivateKey();
byte[] pubKey = native.generatePublicKey(privKey);
DjbECPublicKey key1 = new DjbECPublicKey(pubKey);
byte[] pubKey2 = native.generatePublicKey(privKey);
Assert.IsTrue(StructuralComparisons.StructuralEqualityComparer.Equals(
pubKey, pubKey2));
DjbECPublicKey key2 = new DjbECPublicKey(pubKey2);
Assert.IsTrue(key1.Equals(key2));
int hash1 = key1.GetHashCode();
int hash2 = key2.GetHashCode();
Assert.AreEqual <int>(hash1, hash2);
}
public byte[] generatePrivateKey(byte[] random)
{
return(native.generatePrivateKey(random));
}