public async void DecryptEncryptedFileToNewFile()
{
//eg. decrypt encrypted file to a new file
//XamEncDec.DecryptFileAsNewFile(<True=local directory,False=use custom path>,
//<set string for custom path>, <folder name for output>, <encrypted filename>,
//<password used for encryption>, <new filename for decrypted file>);
var isFileDecrypted = await XamEncDec.DecryptFileAsNewFile(true, "", "folderName1", "MARBLES_ENCRYPTED.JPG", "myPassword", "MARBLES_DECRYPTED.JPG");
}
private async void DecryptFileToNewFile_Clicked(object sender, EventArgs e)
{
if (ent_filetofile_filename.Text != "" && ent_filetofile_filename.Text != null)
{
var file = await CrossFilePicker.Current.PickFile();
try
{
if (file != null)
{
await Navigation.PushModalAsync(popup);
await Task.Delay(5000);
StringBuilder stb = new StringBuilder(file.FilePath);
int postIndex = IndexOf(stb, file.FileName, 0, true);
string folderPath = stb.Remove(postIndex, file.FilePath.Length - postIndex).ToString();
//convert android content Uri into physical path, normally happens in Android emulator
folderPath = ConvertAndroidContentUriPath(folderPath);
bool isFileEncrypted = await XamEncDec.DecryptFileAsNewFile(false, folderPath, "", file.FileName, "myPassword", ent_filetofile_filename.Text);
if (isFileEncrypted)
{
await DisplayAlert("Decrypt", "File successfully decrypted", "OK");
}
else
{
await DisplayAlert("Error", "Decryption failed", "OK");
}
file.Dispose();
}
}
catch (Exception ex)
{
await DisplayAlert("Error", "Decryption failed, file is not a valid encrypted file", "OK");
}
await Navigation.PopModalAsync();
}
else
{
await DisplayAlert("Error", "Please set the filename", "OK");
}
}
