tuple = CertGetEnhancedKeyUsage(Flags)
Finds the enhanced key usage property and/or extension for the
certificate
Parameters
Flags=0 : int
CERT_FIND_EXT_ONLY_ENHKEY_USAGE_FLAG,
CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG, or 0
Return Value
Returns a sequence of usage OIDs