public static async void EncryptAndWrite <T>(T objectToSave, string fileName)
{
var jsonString = JsonConvert.SerializeObject(objectToSave);
jsonString = AESEncryption.Encrypt(jsonString, "key");
var file = await ApplicationData.Current.RoamingFolder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
using (var datawriter = new DataWriter(stream))
{
datawriter.WriteString(jsonString);
await datawriter.StoreAsync();
}
}
var properties = await file.GetBasicPropertiesAsync();
System.Diagnostics.Debug.WriteLine(properties.Size);
}
public static async Task <T> ReadAndDecrypt <T>(string fileName)
{
string jsonString;
var file = await ApplicationData.Current.RoamingFolder.TryGetItemAsync(fileName) as StorageFile;
if (file == null)
{
return(default(T));
}
var stream = await file.OpenAsync(FileAccessMode.Read);
using (var dataReader = new DataReader(stream.GetInputStreamAt(0)))
{
uint bytesLoaded = await dataReader.LoadAsync((uint)stream.Size);
jsonString = dataReader.ReadString(bytesLoaded);
}
jsonString = AESEncryption.Decrypt(jsonString, "key");
return(JsonConvert.DeserializeObject <T>(jsonString));
}