/// <summary>
/// Abstract base class for Elliptic Curve / AES-256 hybrid ciphers.s
/// </summary>
/// <param name="Curve">Curve instance</param>
public EcAes256(CurvePrimeField Curve)
: base()
{
this.curve = Curve;
this.publicKey = Curve.PublicKey;
this.hasPrivateKey = true;
this.keyString = this.publicKey.X.ToString() + "," + this.publicKey.Y.ToString();
}
/// <summary>
/// Abstract base class for Elliptic Curve / AES-256 hybrid ciphers.s
/// </summary>
/// <param name="X">X-coordinate of remote public key.</param>
/// <param name="Y">Y-coordinate of remote public key.</param>
/// <param name="ReferenceCurve">Reference curve</param>
public EcAes256(byte[] X, byte[] Y, CurvePrimeField ReferenceCurve)
: base()
{
this.publicKey = new PointOnCurve(FromNetwork(X), FromNetwork(Y));
this.curve = ReferenceCurve;
this.hasPrivateKey = false;
this.keyString = this.publicKey.X.ToString() + "," + this.publicKey.Y.ToString();
}
public void Test_ECDH(CurvePrimeField Curve1, CurvePrimeField Curve2)
{
int n;
for (n = 0; n < 100; n++)
{
byte[] Key1 = Curve1.GetSharedKey(Curve2.PublicKey, HashFunction.SHA256);
byte[] Key2 = Curve2.GetSharedKey(Curve1.PublicKey, HashFunction.SHA256);
int i, c;
Assert.AreEqual(c = Key1.Length, Key2.Length);
for (i = 0; i < c; i++)
{
Assert.AreEqual(Key1[i], Key2[i]);
}
Curve1.GenerateKeys();
Curve2.GenerateKeys();
}
}
public void Test_ECDSA(CurvePrimeField Curve1, CurvePrimeField Curve2,
HashFunction HashFunction)
{
int n;
using (RandomNumberGenerator rnd = RandomNumberGenerator.Create())
{
for (n = 0; n < 100; n++)
{
byte[] Data = new byte[1024];
rnd.GetBytes(Data);
KeyValuePair <BigInteger, BigInteger> Signature = Curve1.Sign(Data, HashFunction);
bool Valid = Curve2.Verify(Data, Curve1.PublicKey, HashFunction, Signature);
Assert.IsTrue(Valid);
Curve1.GenerateKeys();
Curve2.GenerateKeys();
}
}
}