public void GenerateSignature_Should_ReturnValidSignature()
{
var crypto = new VirgilCrypto();
var keyPair = crypto.GenerateKeys();
var snapshot = Encoding.UTF8.GetBytes("some card snapshot");
var signatureSnapshot = Encoding.UTF8.GetBytes("some signature snapshot");
var extendedSnapshot = signatureSnapshot != null
? CombineBytesArrays(snapshot, signatureSnapshot)
: snapshot;
var signature = crypto.GenerateSignature(extendedSnapshot, keyPair.PrivateKey);
Assert.IsTrue(crypto.VerifySignature(signature, extendedSnapshot, keyPair.PublicKey));
}