From 51c21f6b9d80c109a7038460a20b38e4bdc5ebfb Mon Sep 17 00:00:00 2001
From: Seonpyo Kim <spkim@kodebox.io>
Date: Wed, 15 May 2019 19:08:43 +0900
Subject: [PATCH] Clear a copied secret key after negation

---
 src/secp256k1.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/secp256k1.c b/src/secp256k1.c
index fca64ce3..ade3a563 100644
--- a/src/secp256k1.c
+++ b/src/secp256k1.c
@@ -567,6 +567,7 @@ int secp256k1_ec_privkey_negate(const secp256k1_context* ctx, unsigned char *sec
     secp256k1_scalar_negate(&sec, &sec);
     secp256k1_scalar_get_b32(seckey, &sec);
 
+    secp256k1_scalar_clear(&sec);
     return 1;
 }