public NvStreamDevice(IPAddress ipAddress, CryptoProvider cryptoProvider)
{
IPAddress = ipAddress;
CryptoProvider = cryptoProvider;
NvHttp = new NvHttp(new Uri($"http://{IPAddress}:{HTTP_PORT}/"));
Online = false;
}
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility =
AppViewBackButtonVisibility.Collapsed;
CryptoProvider = new CryptoProvider();
await CryptoProvider.Initialize();
if (StreamDevices.Count == 0)
{
await GetItemsAsync();
}
base.OnNavigatedTo(e);
}
public async Task <bool> Pair()
{
// Generate salt for hashing the pin
byte[] salt = CryptoProvider.GenerateRandomBytes(16);
// Combine sal and pin and generate aes key from them
string pin = CryptoProvider.GeneratePin();
byte[] saltedPin = CryptoProvider.SaltPin(salt, pin);
KeyParameter aesKey = CryptoProvider.GenerateAesKey(EnhancedSecurity, saltedPin);
// Send the salt and get server cert. This doesn't have read timeout
// because the user must enter the PIN before the server responds
NvPair getServerCertResponse = await NvHttp.GetServerCert(salt, CryptoProvider.GetCertificatePem());
}
public static async Task <List <NvStreamDevice> > DiscoverStreamDevices(CryptoProvider cryptoProvider)
{
List <NvStreamDevice> streamDevices = new List <NvStreamDevice>();
IReadOnlyList <IZeroconfHost> results = await
ZeroconfResolver.ResolveAsync(ZEROCONF_PROTOCOL);
foreach (var result in results)
{
NvStreamDevice streamDevice = new NvStreamDevice(IPAddress.Parse(result.IPAddress), cryptoProvider);
streamDevice.Online = true;
await streamDevice.QueryDataInsecure();
streamDevices.Add(streamDevice);
}
return(streamDevices);
}
