From 8dccba6a45db0466370726ed462b9da2eae43bce Mon Sep 17 00:00:00 2001
From: Cory Fields <cory-nospam-@coryfields.com>
Date: Fri, 9 Jan 2015 22:06:08 -0500
Subject: [PATCH] fail immediately on an empty signature

---
 src/ecwrapper.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ecwrapper.cpp b/src/ecwrapper.cpp
index 33dd9a9a2..0236e90c1 100644
--- a/src/ecwrapper.cpp
+++ b/src/ecwrapper.cpp
@@ -117,6 +117,9 @@ bool CECKey::SetPubKey(const unsigned char* pubkey, size_t size) {
 }
 
 bool CECKey::Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig) {
+    if (vchSig.empty())
+        return false;
+
     // New versions of OpenSSL will reject non-canonical DER signatures. de/re-serialize first.
     unsigned char *norm_der = NULL;
     ECDSA_SIG *norm_sig = ECDSA_SIG_new();