Stop using OpenSSL for hashes.

[meshlink] / src / openssl / digest.c

diff --git a/src/openssl/digest.c b/src/openssl/digest.c
index 8d97e3bf9ed345c53e5db8dc7949297e06920c65..8d6e64da40f3bce367433465f0d78bdf02256044 100644 (file)
--- a/src/openssl/digest.c
+++ b/src/openssl/digest.c
@@ -1,6 +1,6 @@
 /*
     digest.c -- Digest handling
-    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
@@ -115,14 +115,23 @@ bool digest_verify(digest_t *digest, const void *indata, size_t inlen, const voi
 }
 
 int digest_get_nid(const digest_t *digest) {
-       return digest->digest ? digest->digest->type : 0;
+       if(!digest || !digest->digest)
+               return 0;
+
+       return digest->digest->type;
 }
 
 size_t digest_keylength(const digest_t *digest) {
+       if(!digest || !digest->digest)
+               return 0;
+
        return digest->digest->md_size;
 }
 
 size_t digest_length(const digest_t *digest) {
+       if(!digest)
+               return 0;
+
        return digest->maclength;
 }