+int X509_SIG_INFO_get(const X509_SIG_INFO *siginf, int *mdnid, int *pknid,
+ int *secbits, uint32_t *flags);
+void X509_SIG_INFO_set(X509_SIG_INFO *siginf, int mdnid, int pknid,
+ int secbits, uint32_t flags);
+
+int X509_get_signature_info(X509 *x, int *mdnid, int *pknid, int *secbits,
+ uint32_t *flags);
+