From 4507d5ef438ad37cf587f321e553f43751f70333 Mon Sep 17 00:00:00 2001
From: Christopher MacGown <chris@pistoncloud.com>
Date: Wed, 20 Jul 2016 16:53:14 -0700
Subject: [PATCH] CMS_sign expects certstack to be a pointer

---
 ctypescrypto/cms.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ctypescrypto/cms.py b/ctypescrypto/cms.py
index c4ee1e9..ede20f5 100644
--- a/ctypescrypto/cms.py
+++ b/ctypescrypto/cms.py
@@ -120,7 +120,7 @@ class SignedData(CMSBase):
             raise ValueError("Certificate doesn't match public key")
         bio = Membio(data)
         if certs is not None and len(certs) > 0:
-            certstack = StackOfX509(certs)
+            certstack = StackOfX509(certs).ptr
         else:
             certstack = None
         ptr = libcrypto.CMS_sign(cert.cert, pkey.key, certstack, bio.bio, flags)
-- 
2.39.2