ZeroMemory(&ChainConfig,sizeof(CERT_CHAIN_ENGINE_CONFIG));
	ChainConfig.cbSize = sizeof(CERT_CHAIN_ENGINE_CONFIG);    
	ChainConfig.dwFlags = CERT_CHAIN_ENABLE_CACHE_AUTO_UPDATE;
	ChainConfig.hRestrictedOther = hMemoryStore;

	if(!CertCreateCertificateChainEngine(&ChainConfig, &hChainEngine))
		cout << "Error CertCreateCertificateChain" << endl;
	if(!CertGetCertificateChain(
		&hChainEngine, 
		pSignerCert, 
		NULL, 
		NULL, 
		&ChainPara, 
		CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT | CERT_CHAIN_REVOCATION_CHECK_CACHE_ONLY, 
		NULL, 
		&pChainContext))       
		cout << "Error CertGetCertificateChain" << endl;