-extern void digest_close(digest_t *);
-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 *);
-extern bool digest_active(const digest_t *);
+extern void digest_close(digest_t *digest);
+extern bool digest_create(digest_t *digest, const void *indata, size_t inlen, void *outdata) __attribute__((__warn_unused_result__));
+extern bool digest_verify(digest_t *digest, const void *indata, size_t inlen, const void *digestdata) __attribute__((__warn_unused_result__));
+extern bool digest_set_key(digest_t *digest, const void *key, size_t len) __attribute__((__warn_unused_result__));
+extern int digest_get_nid(const digest_t *digest);
+extern size_t digest_keylength(const digest_t *digest);
+extern size_t digest_length(const digest_t *digest);
+extern bool digest_active(const digest_t *digest);