public ReadPage()
{
InitializeComponent();
try
{
var json = Uri.UnescapeDataString(new Uri(App.UriData).Query.Replace("?data=", string.Empty));
var message = JsonConvert.DeserializeObject <KriptalMessage>(json);
var aes = new AesCrypto();
var rsa = new RsaCrypto();
var localDataManager = new LocalDataManager(App.Password);
var privateKey = localDataManager.GetPrivateKey();
var textAesKey = rsa.DecryptWithPrivate(message.TextAesKey, privateKey);
var textAesIv = rsa.DecryptWithPrivate(message.TextAesIv, privateKey);
var text = aes.Decrypt(message.TextData, textAesKey, Convert.FromBase64String(textAesIv));
MessageText = text;
if (!string.IsNullOrEmpty(message.BlockchainStampUrl))
{
var blockchainUrl = rsa.DecryptWithPrivate(message.BlockchainStampUrl, privateKey);
BlockchainReciptUrl = blockchainUrl;
}
if (message.FileName != string.Empty)
{
FileName = rsa.DecryptWithPrivate(message.FileName, privateKey);
var fileAesKey = rsa.DecryptWithPrivate(message.FileAesKey, privateKey);
var fileAesIv = rsa.DecryptWithPrivate(message.FileAesIv, privateKey);
FileData = aes.Decrypt(message.FileData, fileAesKey, Convert.FromBase64String(fileAesIv));
HasAttachment = true;
}
else
{
HasAttachment = false;
}
var fromId = rsa.DecryptWithPrivate(message.FromId, privateKey);
var user = localDataManager.Get <User>(u => u.Id == fromId);
UserName = user.Name;
App.UriData = string.Empty;
BindingContext = this;
}
catch
{
DisplayAlert(AppResources.Title, AppResources.CantRead, AppResources.OK);
}
}
