public void SymmetricEncryptionEqualsTest()
{
string message = "aw3lrifos83fusoi3fjsofisjfo";
byte[] messageBytes = Encoding.Unicode.GetBytes(message);
var asymmetricEncryption = new AsymmetricEncryption(_publicKey, _privateKey);
string path = Path.GetTempFileName();
string outputPath = Path.GetTempFileName();
asymmetricEncryption.EncryptSymmetrically(messageBytes, 256, 128, outputPath);
byte[] encryptedBytes = File.ReadAllBytes(outputPath);
int keyLen = BitConverter.ToInt32(encryptedBytes.Take(4).ToArray(), 0);
byte[] key = encryptedBytes.Skip(4).Take(keyLen).ToArray();
int ivLen = BitConverter.ToInt32(encryptedBytes.Skip(4 + key.Length).Take(4).ToArray(), 0);
byte[] iv = encryptedBytes.Skip(4 + key.Length + 4).Take(ivLen).ToArray();
key = asymmetricEncryption.DecryptToBytes(key);
iv = asymmetricEncryption.DecryptToBytes(iv);
byte[] encryptedMessageBytes = encryptedBytes.Skip(4 + keyLen + 4 + ivLen).ToArray();
SymmetricEncryption symmetricEncryption = new SymmetricEncryption(key, iv);
string decryptedMessage = symmetricEncryption.DecryptToString(encryptedMessageBytes);
Assert.AreEqual(message, decryptedMessage);
}
public async Task SymmetricEncryptionEqualsTest()
{
string message = "aw3lrifos83fusoi3fjsofisjfo";
byte[] messageBytes = Encoding.UTF8.GetBytes(message);
var asymmetricEncryption = new AsymmetricEncryption(_publicKey, _privateKey);
string path = Path.GetTempFileName();
MemoryStream encryptedStream = new MemoryStream();
await asymmetricEncryption.EnvelopeAsync(messageBytes, 256, 128, encryptedStream, CancellationToken.None);
byte[] encryptedBytes = encryptedStream.ToArray();
int keyLen = BitConverter.ToInt32(encryptedBytes.Take(4).ToArray(), 0);
byte[] key = encryptedBytes.Skip(4).Take(keyLen).ToArray();
int ivLen = BitConverter.ToInt32(encryptedBytes.Skip(4 + key.Length).Take(4).ToArray(), 0);
byte[] iv = encryptedBytes.Skip(4 + key.Length + 4).Take(ivLen).ToArray();
key = asymmetricEncryption.DecryptToBytes(key);
iv = asymmetricEncryption.DecryptToBytes(iv);
byte[] encryptedMessageBytes = encryptedBytes.Skip(4 + keyLen + 4 + ivLen).ToArray();
SymmetricEncryption symmetricEncryption = new SymmetricEncryption(key, iv);
string decryptedMessage = symmetricEncryption.DecryptToString(encryptedMessageBytes, Encoding.UTF8);
Assert.Equal(message, decryptedMessage);
}