From: W.C.A. Wijngaards <wouter@nlnetlabs.nl>
Date: Fri, 9 Oct 2020 12:40:26 +0000 (+0200)
Subject: zonemd, harden result length for unsupported algo in nettle digest final.
X-Git-Tag: release-1.13.2rc1~269^2~64
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1dc4d7a9f61a225690e35e99b40539d942de0a53;p=thirdparty%2Funbound.git

zonemd, harden result length for unsupported algo in nettle digest final.
---

diff --git a/validator/val_secalgo.c b/validator/val_secalgo.c
index 908155d6f..a4d020143 100644
--- a/validator/val_secalgo.c
+++ b/validator/val_secalgo.c
@@ -1636,6 +1636,7 @@ int secalgo_hash_final(struct secalgo_hash* hash, uint8_t* result,
 		sha512_digest(&hash->ctx512, SHA512_DIGEST_SIZE,
 			(unsigned char*)result);
 	} else {
+		*resultlen = 0;
 		return 0;
 	}
 	return 1;