public void CryptoBoxOpenAfternm_Decryption_Should_Success()
{
//Arrange
String expectedMessage = "test";
Byte[] bMessage = Encoding.UTF8.GetBytes(expectedMessage);
Byte[] pk = new Byte[TweetNaCl.BoxPublicKeyBytes];
Byte[] sk = new Byte[TweetNaCl.BoxSecretKeyBytes];
Byte[] nonce = new Byte[TweetNaCl.BoxNonceBytes];
pk = TweetNaCl.CryptoBoxKeypair(sk);
TweetNaCl.RandomBytes(nonce);
var k = TweetNaCl.CryptoBoxBeforenm(pk, sk);
//Act
var encMessage = TweetNaCl.CryptoBoxAfternm(bMessage, nonce, k);
var decMessage = TweetNaCl.CryptoBoxOpenAfternm(encMessage, nonce, k);
//Assert
Assert.AreEqual(decMessage.Length, bMessage.Length, "decryption failed.");
Assert.AreEqual(decMessage, bMessage, "decryption failed.");
var resultMessage = Encoding.ASCII.GetString(decMessage);
Assert.AreEqual(resultMessage, expectedMessage, "decryption failed.");
}