private string DecodeQrCode(WriteableBitmap wb)
{
IBarcodeReader reader = QrTools.GetQrReader();
var result = reader.Decode(wb);
return(result?.Text);
}
public async Task GenerateQrCode(string contactName)
{
IUserModel user = _storageService.GetUser();
string publicKey = RsaKeyTools.ExtractPublicKey(user.KeyPair);
Tuple <string, string> pkElements = RsaKeyTools.DecomposePublicKey(publicKey);
string contents = ComposeQrData(user.Id, contactName, pkElements.Item1, pkElements.Item2);
IBarcodeWriter writer = QrTools.GetQrWriter();
var matrix = writer.Encode(contents);
var wb = writer.Write(matrix);
await PictureLibraryTools.SaveWriteableBitmap(wb, string.Format(QrCodeFileName, contactName));
}
