-int make_challenge(const char *id, const char *pass, const char *nonce,
- unsigned char *challenge, int *challengesize);
-int make_authobj(const char *id, const char *pass, const char *nonce,
- const unsigned char *secret, const int secsize,
- const unsigned char *payload, const int paysize,
- unsigned char *buffer, int *bufsize);
-int parse_authobj(const unsigned char *key, const int keysize,
- const unsigned char *buffer, const int bufsize,
- unsigned char *secret, int *secsize,
- unsigned char *payload, int *paysize);
+/* Construct new authobj from the given secret and other data */
+struct _auth_obj new_authobj(const char *userid, const char *password,
+ const char *nonce,
+ const unsigned char *secret, const int secsize,
+ const unsigned char *payload, const int paysize);
+
+/* Unwrap old authobj, extract payload, construct new one with newnonce */
+struct _auth_obj verify_authobj(const char *userid, const char *password,
+ const char *oldnonce, const char *newnonce,
+ const unsigned char *authobj, const int authsize);
+
+/* Unwrap old authobj, replace the payload, construct new one with newnonce */
+struct _auth_obj reload_authobj(const char *userid, const char *password,
+ const char *oldnonce, const char *newnonce,
+ const unsigned char *authobj, const int authsize,
+ const unsigned char *payload, const int paysize);