From 76ce5c8de3b97c9843e23c9b30f1049045c4b293 Mon Sep 17 00:00:00 2001
From: Cory Fields <cory-nospam-@coryfields.com>
Date: Fri, 9 Jan 2015 22:06:08 -0500
Subject: fail immediately on an empty signature

Github-Pull: #5634
Rebased-From: 8dccba6a45db0466370726ed462b9da2eae43bce
---
 src/ecwrapper.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/ecwrapper.cpp')

diff --git a/src/ecwrapper.cpp b/src/ecwrapper.cpp
index be33913d0d..79f70d1f47 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();
-- 
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