public static byte[] DecodeMessage(byte[] message, byte[] nonce, byte[] senderPublicKey, byte[] recipientPrivateKey)
{
var curvePublicKey = PublicKeyAuth.ConvertEd25519PublicKeyToCurve25519PublicKey(senderPublicKey);
var curveSecretKey = PublicKeyAuth.ConvertEd25519SecretKeyToCurve25519SecretKey(recipientPrivateKey);
return(TweetNaCl.CryptoBoxOpen(message, nonce, curvePublicKey, curveSecretKey));
}
public void TestForMessageDecryptionTweetNaCljsKeyPair()
{
Byte[] apk = Convert.FromBase64String("GK4GzNY+fbkRPd5fwYUaca70iENh2A1QRss1KBtpWU4=");
Byte[] ask = Convert.FromBase64String("HQT4qtjv/3Q0nGYX4DB776e6QeUE40wr71MxNSg0+bc=");
Byte[] bpk = new Byte[TweetNaCl.BoxPublicKeyBytes];
Byte[] bsk = new Byte[TweetNaCl.BoxSecretKeyBytes];
String message = "test";
Byte[] bMessage = Encoding.UTF8.GetBytes(message);
Byte[] paddedMessage = new Byte[TweetNaCl.BoxZeroBytes + bMessage.Length];
Byte[] nonce = new Byte[TweetNaCl.BoxNonceBytes];
Byte[] k = new Byte[TweetNaCl.BoxBeforenmBytes];
var result = -10;
apk = TweetNaCl.CryptoBoxKeypair(ask);
Assert.AreNotEqual(result, -1, "key pair A generation failed.");
bpk = TweetNaCl.CryptoBoxKeypair(bsk);
Assert.AreNotEqual(result, -1, "key pair B generation failed.");
TweetNaCl.RandomBytes(nonce);
Assert.AreNotEqual(result, -1, "randombytes generation failed.");
var encMessage = TweetNaCl.CryptoBox(paddedMessage, nonce, bpk, ask);
Assert.AreNotEqual(result, -1, "encryption failed.");
var decMessage = TweetNaCl.CryptoBoxOpen(encMessage, nonce, apk, bsk);
Assert.AreNotEqual(result, -1, "decryption failed.");
}
public void CryptoBoxOpen_DecryptionDifferentKeyPair_Should_Success()
{
//Arrange
Byte[] apk = new Byte[TweetNaCl.BoxPublicKeyBytes];
Byte[] ask = new Byte[TweetNaCl.BoxSecretKeyBytes];
Byte[] bpk = new Byte[TweetNaCl.BoxPublicKeyBytes];
Byte[] bsk = new Byte[TweetNaCl.BoxSecretKeyBytes];
String expectedMessage = "test";
Byte[] bMessage = Encoding.UTF8.GetBytes(expectedMessage);
Byte[] nonce = new Byte[TweetNaCl.BoxNonceBytes];
apk = TweetNaCl.CryptoBoxKeypair(ask);
bpk = TweetNaCl.CryptoBoxKeypair(bsk);
TweetNaCl.RandomBytes(nonce);
//Act
var encMessage = TweetNaCl.CryptoBox(bMessage, nonce, bpk, ask);
var decMessage = TweetNaCl.CryptoBoxOpen(encMessage, nonce, apk, bsk);
//Assert
Assert.AreEqual(encMessage.Length, bMessage.Length + TweetNaCl.BoxBoxZeroBytes, "encryption failed.");
Assert.AreEqual(decMessage.Length, bMessage.Length, "decryption failed.");
var resultMessage = Encoding.ASCII.GetString(decMessage);
Assert.AreEqual(resultMessage, expectedMessage, "decryption failed.");
}
static void Main(string[] args)
{
Timer timer = Metric.Timer("Requests", Unit.Requests);
for (var i = 0; i < 10; i++)
{
Byte[] apk = new Byte[TweetNaCl.BOX_PUBLICKEYBYTES];
Byte[] ask = new Byte[TweetNaCl.BOX_SECRETKEYBYTES];
Byte[] bpk = new Byte[TweetNaCl.BOX_PUBLICKEYBYTES];
Byte[] bsk = new Byte[TweetNaCl.BOX_SECRETKEYBYTES];
String message = "test";
Byte[] bMessage = Encoding.UTF8.GetBytes(message);
Byte[] nonce = new Byte[TweetNaCl.BOX_NONCEBYTES];
Byte[] k = new Byte[TweetNaCl.BOX_BEFORENMBYTES];
apk = TweetNaCl.CryptoBoxKeypair(ask);
bpk = TweetNaCl.CryptoBoxKeypair(bsk);
TweetNaCl.RandomBytes(nonce);
using (var context = timer.NewContext("Encryption"))
{
var encMessage = TweetNaCl.CryptoBox(bMessage, nonce, bpk, ask);
var decMessage = TweetNaCl.CryptoBoxOpen(encMessage, nonce, apk, bsk);
}
using (var context = timer.NewContext("Decryption"))
{
var encMessage = TweetNaCl.CryptoBox(bMessage, nonce, bpk, ask);
var decMessage = TweetNaCl.CryptoBoxOpen(encMessage, nonce, apk, bsk);
}
//Console.WriteLine(timer.);
}
Console.ReadKey();
}