X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fgcrypt%2Fdigest.c;h=fce48ee26944e89c154780de0dbd4e1b10b0a80e;hb=refs%2Fheads%2F1.1;hp=50446f6e7309f29ee775a2e9f7b90a9da47eb83f;hpb=90cde91141ec61be4354d8deab21edb8fdf01022;p=tinc

diff --git a/src/gcrypt/digest.c b/src/gcrypt/digest.c
index 50446f6e..e0291689 100644
--- a/src/gcrypt/digest.c
+++ b/src/gcrypt/digest.c
@@ -111,6 +111,10 @@ bool digest_open_by_nid(digest_t *digest, nid_t nid, size_t maclength) {
 }
 
 void digest_close(digest_t *digest) {
+	if(!digest) {
+		return;
+	}
+
 	if(digest->hmac) {
 		gcry_md_close(digest->hmac);
 	}
@@ -145,7 +149,7 @@ bool digest_create(digest_t *digest, const void *indata, size_t inlen, void *out
 
 		memcpy(outdata, tmpdata, digest->maclength);
 	} else {
-		char tmpdata[len];
+		char *tmpdata = alloca(len);
 		gcry_md_hash_buffer(digest->algo, tmpdata, indata, inlen);
 		memcpy(outdata, tmpdata, digest->maclength);
 	}
@@ -155,7 +159,7 @@ bool digest_create(digest_t *digest, const void *indata, size_t inlen, void *out
 
 bool digest_verify(digest_t *digest, const void *indata, size_t inlen, const void *cmpdata) {
 	size_t len = digest->maclength;
-	uint8_t outdata[len];
+	uint8_t *outdata = alloca(len);
 
 	return digest_create(digest, indata, inlen, outdata) && !memcmp(cmpdata, outdata, len);
 }