How do I validate and access EV properties of a EV Certificate?

I'd like to determine if a given x509 Certificate is an EV cert using C#. Since there are no properties available to me in the .NET API and I'm not sure where to get more information on this standard, I'm a bit stuck.

Does anyone have the answer, or know where I should start looking inside the binary blob开发者_高级运维?

The EV certificate is distinguished by special certificate policy (that's a certificate extension), so by reading this extension you can recognize EV certificate. Complete list of EV policy identifiers can be found here.