private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
certFile = File.ReadAllBytes(openFileDialog.FileName);
if (certFile == null)
{
MessageBox.Show("File is empty");
}
else
{
try
{
model = CertificateReader.Read(certFile);
ShowForm showForm = new ShowForm();
showForm.richTextBox1.Text = $"Name is {model.Name} \n Issuer is {model.Issuer} \n ValidTo is {model.ValidTo} \n Valid From is {model.ValidFrom}";
showForm.Show();
}
catch (Exception ex)
{
MessageBox.Show(ex.GetBaseException().ToString());
}
}
}
}
public static CertificateModel Read(string rawData)
{
var certificate = new X509Certificate2(Convert.FromBase64String(rawData));
RSACng rsa = certificate.GetRSAPublicKey() as RSACng;
CertificateModel certificateModel = new CertificateModel
{
Name = certificate.SubjectName.Name,
Issuer = certificate.Issuer,
ValidTo = certificate.GetExpirationDateString(),
ValidFrom = certificate.GetEffectiveDateString(),
PubKey = Convert.ToBase64String(rsa?.ExportSubjectPublicKeyInfo() ?? certificate.GetPublicKey(), Base64FormattingOptions.InsertLineBreaks)
};
return(certificateModel);
}
private void btnText_Clicked(object sender, EventArgs e)
{
if (richTextBox1.Text == string.Empty)
{
MessageBox.Show("textbox is empty");
}
else
{
try
{
model = CertificateReader.Read(richTextBox1.Text.Trim());
ShowForm showForm = new ShowForm();
showForm.richTextBox1.Text = $"Name is {model.Name} \n Issuer is {model.Issuer} \n ValidTo is {model.ValidTo} \n Valid From is {model.ValidFrom}";
showForm.Show();
}
catch (Exception ex)
{
MessageBox.Show(ex.GetBaseException().ToString());
}
}
}
private async void btnUrl_Clicked(object sender, EventArgs e)
{
var url = textBox1.Text.Trim();
if (url == string.Empty)
{
MessageBox.Show("No URL Found");
}
else
{
if (!url.StartsWith("https"))
{
if (!url.StartsWith("http"))
{
url = "https://" + url;
}
else
{
url = "https:" + url.Split(':')[1];
}
}
HttpClient httpClient = new HttpClient(new HttpClientHandler
{
UseDefaultCredentials = true,
ServerCertificateCustomValidationCallback = (sender, cert, chain, error) =>
{
model = CertificateReader.Read(cert.RawData);
return(true);
}
});
await httpClient.GetAsync(url);
if (model != null)
{
ShowForm showForm = new ShowForm();
showForm.richTextBox1.Text = $"Name is {model.Name} \n Issuer is {model.Issuer} \n ValidTo is {model.ValidTo} \n Valid From is {model.ValidFrom}";
showForm.Show();
}
}
}