X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fopenssl%2Fprf.c;h=f1f3d172a5d7f2801716cd33cb2adacf73e63763;hb=df687b5ca86b93e0801db54ba4bca0f81ff02548;hp=4f5a52befc65a98bbaf8338aa7dda5d4fe2a3d11;hpb=214060ef20499332b0369030b664a8e239518661;p=tinc

diff --git a/src/openssl/prf.c b/src/openssl/prf.c
index 4f5a52be..f1f3d172 100644
--- a/src/openssl/prf.c
+++ b/src/openssl/prf.c
@@ -29,11 +29,12 @@
    We use SHA512 instead of MD5 and SHA1.
  */
 
-static bool prf_xor(int nid, const char *secret, size_t secretlen, char *seed, size_t seedlen, char *out, ssize_t outlen) {
+static bool prf_xor(int nid, const char *secret, size_t secretlen, char *seed, size_t seedlen, char *out, size_t outlen) {
 	digest_t *digest = digest_open_by_nid(nid, -1);
 
-	if(!digest)
+	if(!digest) {
 		return false;
+	}
 
 	if(!digest_set_key(digest, secret, secretlen)) {
 		digest_close(digest);
@@ -66,10 +67,13 @@ static bool prf_xor(int nid, const char *secret, size_t secretlen, char *seed, s
 		}
 
 		/* XOR the results of the outer HMAC into the out buffer */
-		for(int i = 0; i < len && i < outlen; i++)
+		size_t i;
+
+		for(i = 0; i < len && i < outlen; i++) {
 			*out++ ^= hash[i];
+		}
 
-		outlen -= len;
+		outlen -= i;
 	}
 
 	digest_close(digest);