From 1dc4d7a9f61a225690e35e99b40539d942de0a53 Mon Sep 17 00:00:00 2001
From: "W.C.A. Wijngaards" <wouter@nlnetlabs.nl>
Date: Fri, 9 Oct 2020 14:40:26 +0200
Subject: [PATCH] zonemd, harden result length for unsupported algo in nettle
 digest final.

---
 validator/val_secalgo.c | 1 +
 1 file changed, 1 insertion(+)

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;
-- 
2.47.2