private void btnVerify_Click(object sender, EventArgs e)
{
if (!File.Exists(txtFileToVerify.Text))
{
MessageBox.Show("Please select the file containing the signed content");
return;
}
if (!File.Exists(txtSignatureFile.Text))
{
MessageBox.Show("Please select the file containing the PKCS#7 Signature");
return;
}
try
{
using (Stream data = File.OpenRead(txtFileToVerify.Text),
sig = File.OpenRead(txtSignatureFile.Text))
{
SAPIWrapper.SignatureDetails details =
SAPIWrapper.ValidateSignature(data, sig);
lblSignerName.Text = details.SignerName;
lblSigningTime.Text = details.SignatureTimeTicks == 0 ?
"Not Available" : string.Format("{0}, {1}",
new DateTime(details.SignatureTimeTicks).ToShortDateString(),
new DateTime(details.SignatureTimeTicks).ToShortTimeString());
lblEmail.Text = details.SignerEmail;
chkIsValid.Checked = details.isValid;
lblShowCert.Tag = details.SignerCertificate;
data.Close();
sig.Close();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
private void btnSign_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(txtUsername.Text))
{
MessageBox.Show("Please provide Username");
return;
}
if (string.IsNullOrEmpty(txtPassword.Text))
{
MessageBox.Show("Please provide Password");
return;
}
if (!File.Exists(txtFile.Text))
{
MessageBox.Show(string.Format("The file '{0}' doesn't exist!",
txtFile.Text));
return;
}
try
{
using (Stream dataToSign = File.OpenRead(txtFile.Text),
Signature = new MemoryStream())
{
//Sign Stream data
SAPIWrapper.SignStream(
txtUsername.Text,
txtDomain.Text,
txtPassword.Text,
dataToSign, Signature);
//Close input stream
dataToSign.Close();
//Save signature data to file
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "Signature file (*.p7b)|*.p7b";
sfd.Title = "Please select the file to save the signature to";
sfd.FileName = Path.GetFileNameWithoutExtension(txtFile.Text) + ".p7b";
if (sfd.ShowDialog() != DialogResult.OK)
{
Signature.Close();
return;
}
File.WriteAllBytes(sfd.FileName,
(Signature as MemoryStream).ToArray());
txtSignatureFile.Text = sfd.FileName;
Signature.Close();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
MessageBox.Show("The data was signed successfully");
}
