The CERT_POLICY_ID structure contains a list of certificate policies that the certificate is expressly recognized as supporting, together with optional qualifier information pertaining to these policies.
CERT_POLICY_ID is a component of CERT_KEY_USAGE_RESTRICTION_INFO.
typedef struct _CERT_POLICY_ID {
DWORD cCertPolicyElementId;
LPSTR* rgpszCertPolicyElementId;
} CERT_POLICY_ID, *PCERT_POLICY_ID;
CERT_KEY_USAGE_RESTRICTION_INFO