/*
digest.h -- header file digest.c
- Copyright (C) 2007-2013 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
extern digest_t *digest_open_by_nid(int nid, int maclength) __attribute__ ((__malloc__));
extern digest_t *digest_open_sha1(int maclength) __attribute__ ((__malloc__));
extern void digest_close(digest_t *);
-extern bool digest_create(digest_t *, const void *indata, size_t inlen, void *outdata);
-extern bool digest_verify(digest_t *, const void *indata, size_t inlen, const void *digestdata);
-extern bool digest_set_key(digest_t *, const void *key, size_t len);
+extern bool digest_create(digest_t *, const void *indata, size_t inlen, void *outdata) __attribute__ ((__warn_unused_result__));
+extern bool digest_verify(digest_t *, const void *indata, size_t inlen, const void *digestdata) __attribute__ ((__warn_unused_result__));
+extern bool digest_set_key(digest_t *, const void *key, size_t len) __attribute__ ((__warn_unused_result__));
extern int digest_get_nid(const digest_t *);
extern size_t digest_keylength(const digest_t *);
extern size_t digest_length(const digest_t *);