private async void ExportAsync()
{
try
{
if (!this.ValidateControls())
{
UpdateStatusStrip("Please fill all required fields.");
return;
}
UpdateStatusStrip(string.Empty);
ToogleControls(enabled: false);
byte[] cryptographicObjectContent = null;
var saveFileDialogFilter = string.Empty;
var saveFileDialogFileName = Path.GetFileNameWithoutExtension(this.textBoxPath.Text);
var selectedItemObject = (string)this.comboBoxObject.SelectedItem;
var selectedItemFormat = (string)this.comboBoxFormat.SelectedItem;
var selectedCryptographicObjectType = CertUtilConstants.CryptographicObjects[selectedItemObject];
await Task.Run(() =>
{
if (selectedCryptographicObjectType == CertUtilConstants.CryptographicObjectType.PublicKeyCertificate)
{
saveFileDialogFilter = string.Format("{0}|{1}", selectedItemFormat, CertUtilConstants.PublicKeyCertificatesFormats[selectedItemFormat]);
saveFileDialogFileName += CertUtilConstants.PublicKeyCertificatesFormats[selectedItemFormat].Trim('*');
if (selectedItemFormat.Contains("Base64"))
{
var cryptographicObjectText = CertificateUtils.ExportPublicKeyCertificateToPEM(File.ReadAllBytes(this.textBoxPath.Text), this.textBoxPassword.Text.ToSecureString());
cryptographicObjectContent = System.Text.Encoding.ASCII.GetBytes(cryptographicObjectText);
}
else if (selectedItemFormat.Contains("Binary"))
{
cryptographicObjectContent = CertificateUtils.ExportPublicKeyCertificate(File.ReadAllBytes(this.textBoxPath.Text), this.textBoxPassword.Text.ToSecureString());
}
else
{
throw new NotImplementedException();
}
}
else if (selectedCryptographicObjectType == CertUtilConstants.CryptographicObjectType.PrivateKey)
{
saveFileDialogFilter = string.Format("{0}|{1}", selectedItemFormat, CertUtilConstants.PrivateKeyFormats[selectedItemFormat]);
saveFileDialogFileName += CertUtilConstants.PrivateKeyFormats[selectedItemFormat].Trim('*');
if (selectedItemFormat.Contains("Base64"))
{
var cryptographicObjectText = CertificateUtils.ExportPrivateKeyToPEM(File.ReadAllBytes(this.textBoxPath.Text), this.textBoxPassword.Text.ToSecureString());
if (cryptographicObjectText.IsNullOrEmpty())
{
throw new Exception("Certificate does not have a private key.");
}
cryptographicObjectContent = System.Text.Encoding.ASCII.GetBytes(cryptographicObjectText);
}
else if (selectedItemFormat.Contains("Binary"))
{
cryptographicObjectContent = CertificateUtils.ExportPrivateKey(File.ReadAllBytes(this.textBoxPath.Text), this.textBoxPassword.Text.ToSecureString());
if (cryptographicObjectContent == null)
{
throw new Exception("Certificate does not have a private key.");
}
}
else
{
throw new NotImplementedException();
}
}
else
{
throw new NotImplementedException();
}
});
using (var saveFileDialog = new SaveFileDialog())
{
saveFileDialog.Title = "Please choose a file name...";
saveFileDialog.Filter = saveFileDialogFilter;
saveFileDialog.FileName = saveFileDialogFileName;
saveFileDialog.CheckFileExists = false;
saveFileDialog.CheckPathExists = true;
if (DialogResult.OK == saveFileDialog.ShowDialog(this))
{
string fileName = saveFileDialog.FileName;
if (fileName.Length > 0)
{
File.WriteAllBytes(fileName, cryptographicObjectContent);
UpdateStatusStrip("File has been successfully saved.");
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(this, $"Error: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
ToogleControls(enabled: true);
}