Use hardening option to add only hardening flags

[tinc] / src / gcrypt / digest.c

diff --git a/src/gcrypt/digest.c b/src/gcrypt/digest.c
index cfea1f0..e029168 100644 (file)
--- a/src/gcrypt/digest.c
+++ b/src/gcrypt/digest.c
@@ -149,7 +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);
        }
@@ -159,7 +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);
 }