int ASN1_UTCTIME_check(ASN1_UTCTIME *a);
ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s,time_t t);
int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, char *str);
+time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s);
int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *a);
ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,time_t t);