ChainConfig.cbSize=sizeof(CERT_CHAIN_ENGINE_CONFIG);ChainConfig.hRestrictedRoot=NULL;ChainConfig.hRestrictedTrust=NULL;ChainConfig.hRestrictedOther=NULL;ChainConfig.cAdditionalStore=0;ChainConfig.rghAdditionalStore=NULL;ChainConfig.dwFlags=CERT_CHAIN_CACHE_END_CERT;ChainConfig.dwUrlRetrievalTime