static void Main(string[] args)
{
// the number of tests
const int tests = 1000;
Stopwatch stopwatch = new Stopwatch();
// simple key agreement
{
stopwatch.Start();
// generate keys
var k1 = X25519KeyAgreement.GenerateKeyPair();
var k2 = X25519KeyAgreement.GenerateKeyPair();
// generate shared secret
var shared1 = X25519KeyAgreement.Agreement(k1.PrivateKey, k2.PublicKey);
var shared2 = X25519KeyAgreement.Agreement(k2.PrivateKey, k1.PublicKey);
stopwatch.Stop();
// print them to make sure they are identical
Console.WriteLine(Convert.ToBase64String(shared1));
Console.WriteLine(Convert.ToBase64String(shared2));
Console.WriteLine($"Full key agreement done in {stopwatch.Elapsed}");
}
stopwatch.Reset();
// benchmark key generation
{
X25519KeyPair key;
stopwatch.Start();
for (int i = 0; i < tests; i++)
{
key = X25519KeyAgreement.GenerateKeyPair();
}
stopwatch.Stop();
Console.WriteLine($"Key generation done in {stopwatch.Elapsed}. That is about " +
$"{Math.Round((double)tests/stopwatch.Elapsed.Milliseconds * 1000)} keys/sec");
}
stopwatch.Reset();
// benchmark agreement
{
X25519KeyPair[] alice = new X25519KeyPair[tests];
X25519KeyPair[] bob = new X25519KeyPair[tests];
// I want to benchmark key agreement not key generation
for (int i = 0; i < tests; i++)
{
alice[i] = X25519KeyAgreement.GenerateKeyPair();
bob[i] = X25519KeyAgreement.GenerateKeyPair();
}
stopwatch.Start();
for (int i = 0; i < tests; i++)
{
X25519KeyAgreement.Agreement(alice[i].PrivateKey, bob[i].PublicKey);
}
stopwatch.Stop();
Console.WriteLine($"Key agreements done in {stopwatch.Elapsed}. That is about " +
$"{Math.Round((double)tests/stopwatch.Elapsed.Milliseconds * 1000)} agreement/sec");
stopwatch.Reset();
}
}
/// <summary>
/// Generates a new Ed25519 <see cref="GenericECKeyPairModel"/> and returns it.
/// </summary>
public static GenericECKeyPairModel GenerateKeyPair()
{
X25519KeyPair pair = X25519KeyAgreement.GenerateKeyPair();
return(new GenericECKeyPairModel(new ECPrivKeyModel(pair.PrivateKey), new ECPubKeyModel(pair.PublicKey)));
}
