From a09f101f147f2313bc727371f8f1e44dc886d330 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Sun, 19 Feb 2012 18:44:51 +0100
Subject: [PATCH] Fix #650: CKey::SetSecret BIGNUM leak

---
 src/key.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/key.h b/src/key.h
index 9e92897e2..a57143b7d 100644
--- a/src/key.h
+++ b/src/key.h
@@ -141,10 +141,13 @@ public:
         if (vchSecret.size() != 32)
             throw key_error("CKey::SetSecret() : secret must be 32 bytes");
         BIGNUM *bn = BN_bin2bn(&vchSecret[0],32,BN_new());
-        if (bn == NULL) 
+        if (bn == NULL)
             throw key_error("CKey::SetSecret() : BN_bin2bn failed");
         if (!EC_KEY_regenerate_key(pkey,bn))
+        {
+            BN_clear_free(bn);
             throw key_error("CKey::SetSecret() : EC_KEY_regenerate_key failed");
+        }
         BN_clear_free(bn);
         fSet = true;
         if (fCompressed || fCompressedPubKey)