public BackendDataViewModel()
{
certificateLargeIcon = "Resources/CertificateImages/certificate_large.png";
_certsList = new ObservableCollection <CertViewModel>();
cert_collection = new X509Certificate2Collection();
rootCA = new CertViewModel {
CertLabel = "rootCA"
};
rootCA.CertificateSelectionChanged += this.CertificateSelectionChanged;
RNCert = new CertViewModel {
CertLabel = "RN cert"
};
RNCert.CertificateSelectionChanged += this.CertificateSelectionChanged;
intermediateCA = new CertViewModel {
CertLabel = "citizen CA"
};
intermediateCA.CertificateSelectionChanged += this.CertificateSelectionChanged;
authCert = new CertViewModel {
CertLabel = "Authentication"
};
authCert.CertificateSelectionChanged += this.CertificateSelectionChanged;
signCert = new CertViewModel {
CertLabel = "Signature"
};
signCert.CertificateSelectionChanged += this.CertificateSelectionChanged;
certsList.Add(rootCA);
certsList[0].Certs.Add(RNCert);
certsList[0].Certs.Add(intermediateCA);
certsList[0].Certs[1].Certs.Add(authCert);
certsList[0].Certs[1].Certs.Add(signCert);
}
//event function notified by CertViewModel when an other certificate is selected
public void CertificateSelectionChanged(object sender, EventArgs e)
{
CertViewModel certificate = sender as CertViewModel;
cert_valid_from = certificate.CertValidfrom;
cert_valid_untill = certificate.CertValidUntill;
cert_usage = certificate.CertUsage;
cert_trust = certificate.CertTrust;
}
private void StoreCertificate(ref CertViewModel theCertViewModel, ref X509Certificate2 theX509Certificate)
{
theCertViewModel.CertValidfrom = theX509Certificate.GetEffectiveDateString();
theCertViewModel.CertValidUntill = theX509Certificate.GetExpirationDateString();
theCertViewModel.CertVisibility = Visibility.Visible;
theCertViewModel.CertTrust = "Not checked";
foreach (X509Extension extension in theX509Certificate.Extensions)
{
//Console.WriteLine(extension.Oid.FriendlyName + "(" + extension.Oid.Value + ")");
if (extension.Oid.Value == "2.5.29.15")//OID_KEY_USAGE
{
theCertViewModel.CertUsage = "";
X509KeyUsageExtension ext = (X509KeyUsageExtension)extension;
if (ext.KeyUsages.HasFlag(X509KeyUsageFlags.DigitalSignature))
{
theCertViewModel.CertUsage += "DigitalSignature ";
}
if (ext.KeyUsages.HasFlag(X509KeyUsageFlags.NonRepudiation))
{
theCertViewModel.CertUsage += "NonRepudiation ";
}
if (ext.KeyUsages.HasFlag(X509KeyUsageFlags.KeyCertSign))
{
theCertViewModel.CertUsage += "KeyCertSign ";
}
if (ext.KeyUsages.HasFlag(X509KeyUsageFlags.DataEncipherment))
{
theCertViewModel.CertUsage += "DataEncipherment ";
}
if (ext.KeyUsages.HasFlag(X509KeyUsageFlags.DecipherOnly))
{
theCertViewModel.CertUsage += "DecipherOnly ";
}
if (ext.KeyUsages.HasFlag(X509KeyUsageFlags.EncipherOnly))
{
theCertViewModel.CertUsage += "EncipherOnly ";
}
if (ext.KeyUsages.HasFlag(X509KeyUsageFlags.KeyAgreement))
{
theCertViewModel.CertUsage += "KeyAgreement ";
}
if (ext.KeyUsages.HasFlag(X509KeyUsageFlags.KeyEncipherment))
{
theCertViewModel.CertUsage += "KeyEncipherment ";
}
if (ext.KeyUsages == (X509KeyUsageFlags.None))
{
theCertViewModel.CertUsage += "No key usage parameters ";
}
}
}
}
