public static void ShowCertificateDialog(X509Chain chain, string title, IntPtr parent)
{
const int certStoreProvMemory = 2; // CERT_STORE_PROV_MEMORY
const int certCloseStoreCheckFlag = 2; // CERT_CLOSE_STORE_CHECK_FLAG
const uint certStoreAddAlways = 4; // CERT_STORE_ADD_ALWAYS
const uint x509AsnEncoding = 1; // X509_ASN_ENCODING
var storeHandle = CertOpenStore(certStoreProvMemory, 0, 0, 0, null);
if (storeHandle == IntPtr.Zero)
{
throw new Win32Exception();
}
try
{
foreach (var element in chain.ChainElements)
{
var certificate = element.Certificate;
var certificateBytes = certificate.Export(X509ContentType.Cert);
var certContextHandle = CertCreateCertificateContext(
x509AsnEncoding, certificateBytes, (uint)certificateBytes.Length);
if (certContextHandle == IntPtr.Zero)
{
throw new Win32Exception();
}
CertAddCertificateContextToStore(storeHandle, certContextHandle, certStoreAddAlways, IntPtr.Zero);
}
var extraStoreArray = new[] { storeHandle };
var extraStoreArrayHandle = GCHandle.Alloc(extraStoreArray, GCHandleType.Pinned);
try
{
var extraStorePointer = extraStoreArrayHandle.AddrOfPinnedObject();
var viewInfo = new CRYPTUI_VIEWCERTIFICATE_STRUCT();
viewInfo.hwndParent = parent;
viewInfo.dwSize = Marshal.SizeOf(viewInfo);
viewInfo.pCertContext = chain.ChainElements[0].Certificate.Handle;
viewInfo.szTitle = title;
viewInfo.nStartPage = 0;
viewInfo.cStores = 1;
viewInfo.rghStores = extraStorePointer;
var fPropertiesChanged = false;
CryptUIDlgViewCertificate(ref viewInfo, ref fPropertiesChanged);
}
finally
{
if (extraStoreArrayHandle.IsAllocated)
{
extraStoreArrayHandle.Free();
}
}
}
finally
{
CertCloseStore(storeHandle, certCloseStoreCheckFlag);
}
}
public void ViewCertificate()
{
var certViewInfo = new CRYPTUI_VIEWCERTIFICATE_STRUCT();
certViewInfo.dwSize = Marshal.SizeOf(certViewInfo);
certViewInfo.pCertContext = _cert.Handle;
certViewInfo.szTitle = "Certificate Info";
certViewInfo.dwFlags = CRYPTUI_DISABLE_ADDTOSTORE;
certViewInfo.nStartPage = 0;
bool fPropertiesChanged = false;
if (!CryptUIDlgViewCertificate(ref certViewInfo, ref fPropertiesChanged))
{
int error = Marshal.GetLastWin32Error();
if (error != 1223)
{
MessageBox.Show("Showing the certificate errored with exit code " + error.ToString(),
"ERROR!", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
}
private void buttonViewCertificate_Click(object sender, EventArgs e)
{
try
{
// Get the cert
X509Certificate2 cert = new X509Certificate2(this.Certificate);
// Show the cert
CRYPTUI_VIEWCERTIFICATE_STRUCT certViewInfo = new CRYPTUI_VIEWCERTIFICATE_STRUCT();
certViewInfo.dwSize = Marshal.SizeOf(certViewInfo);
certViewInfo.pCertContext = cert.Handle;
certViewInfo.szTitle = "Certificate";
certViewInfo.dwFlags = CRYPTUI_DISABLE_ADDTOSTORE;
certViewInfo.nStartPage = 0;
certViewInfo.hwndParent = this.Handle;
bool fPropertiesChanged = false;
CryptUIDlgViewCertificate(ref certViewInfo, ref fPropertiesChanged);
}
catch (Exception ex)
{
Debug.WriteLine(ex);
ExceptionDialog.ShowDialog(this, ex);
}
}
internal static extern bool CryptUIDlgViewCertificate(
ref CRYPTUI_VIEWCERTIFICATE_STRUCT pCertViewInfo,
ref bool pfPropertiesChanged
);
static void ShowCertificateChain(this IEnumerable <X509Certificate2> chain, HwndSource hwndSource)
{
const int CERT_STORE_PROV_MEMORY = 2;
const int CERT_CLOSE_STORE_CHECK_FLAG = 2;
const uint CERT_STORE_ADD_ALWAYS = 4;
const uint X509_ASN_ENCODING = 1;
var storeHandle = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0, 0, null);
if (storeHandle == IntPtr.Zero)
{
throw new Win32Exception();
}
try
{
foreach (var cert in chain)
{
var certificate = cert;
var certificateBytes = certificate.Export(X509ContentType.Cert);
var certContextHandle = CertCreateCertificateContext(X509_ASN_ENCODING, certificateBytes, (uint)certificateBytes.Length);
if (certContextHandle == IntPtr.Zero)
{
throw new Win32Exception();
}
CertAddCertificateContextToStore(storeHandle, certContextHandle, CERT_STORE_ADD_ALWAYS, IntPtr.Zero);
}
var extraStoreArray = new[] { storeHandle };
var extraStoreArrayHandle = GCHandle.Alloc(extraStoreArray, GCHandleType.Pinned);
try
{
var extraStorePointer = extraStoreArrayHandle.AddrOfPinnedObject();
var viewInfo = new CRYPTUI_VIEWCERTIFICATE_STRUCT
{
hwndParent = hwndSource?.Handle ?? IntPtr.Zero,
pCertContext = chain.First().Handle,
nStartPage = 0,
cStores = 1,
rghStores = extraStorePointer
};
viewInfo.dwSize = Marshal.SizeOf(viewInfo);
var fPropertiesChanged = false;
CryptUIDlgViewCertificate(ref viewInfo, ref fPropertiesChanged);
}
finally
{
if (extraStoreArrayHandle.IsAllocated)
{
extraStoreArrayHandle.Free();
}
}
}
finally
{
CertCloseStore(storeHandle, CERT_CLOSE_STORE_CHECK_FLAG);
}
}