/// <summary>
/// Clean up the contained managed classes that need disposing.
/// </summary>
/// <param name="disposing">true if called from Dispose, false if from the finalizer</param>
/// <remarks>
/// This class does not need a finalizer as the managed classes that wrap that native OS
/// resources for certificates have finalizers. Howerver, there may be a need for a subclass to
/// introduce a finalizer, so Dispose is properly implemented.
/// </remarks>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (_nativeCert != null)
{
_nativeCert.Dispose();
}
if (_key != null)
{
_key.Dispose();
}
if (_keyContainer != null)
{
_keyContainer.Dispose();
_keyContainer = null;
}
}
_nativeCert = null;
_key = null;
}
/// <summary>
/// Creates a certificate
/// </summary>
/// <param name="appID"></param>
/// <param name="numberOfYears"></param>
///
private void CreateCert(Guid appID, short numberOfYears)
{
// convert the times to SystemTime structures
NativeMethods.SystemTime beginTime = new NativeMethods.SystemTime(DateTime.Now);
NativeMethods.SystemTime expireTime = new NativeMethods.SystemTime(DateTime.Now);
expireTime.wYear += numberOfYears;
// convert the name into a X500 name
CertificateName certName = new CertificateName(MakeCertSubject(appID));
GenerateKeys(appID);
// create the certificate
using (CryptoApiBlob nameBlob = certName.GetCryptoApiBlob())
{
_nativeCert = NativeMethods.CertCreateSelfSignCertificate(_keyContainer,
nameBlob,
NativeMethods.SelfSignFlags.None,
IntPtr.Zero,
IntPtr.Zero,
ref beginTime,
ref expireTime,
IntPtr.Zero);
if (_nativeCert.IsInvalid)
{
_nativeCert.Dispose();
_nativeCert = null;
throw new CryptographicException(String.Format(
CultureInfo.InvariantCulture,
ResourceRetriever.GetResourceString(
"ApplicationCertificateUnableToCreateCert"),
Util.GetLastErrorMessage()));
}
else
{
// okay to use DangerousGetHandle here as handle is valid and
// used for creation of the certificate only. No reference is added
//
_certificate = new X509Certificate2(_nativeCert.DangerousGetHandle());
}
}
}
internal extern static bool CertAddCertificateContextToStore(
CertificateStoreHandle hCertStore,
CertificateHandle pCertContext,
AddDisposition dwAddDisposition,
[Out]out CertificateHandle ppStoreContext);