From 28145d1e488591baa1544caec7c0ef6d45c045ac Mon Sep 17 00:00:00 2001
From: Zhi Guan <guan@pku.edu.cn>
Date: Sun, 19 Feb 2017 23:48:01 +0800
Subject: [PATCH] bug fix

---
 crypto/ec/ecdsa_ossl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/ec/ecdsa_ossl.c b/crypto/ec/ecdsa_ossl.c
index d5916909..a483bdfa 100644
--- a/crypto/ec/ecdsa_ossl.c
+++ b/crypto/ec/ecdsa_ossl.c
@@ -410,7 +410,7 @@ int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
         ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
         goto err;
     }
-    if (BN_cmp(sig->r, m) <= 0) {
+    if (BN_cmp(sig->s, m) <= 0) {
         ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, EC_R_BAD_SIGNATURE);
         ret = 0;
         goto err;