From: Thomas Habets <habets@google.com>
Date: Thu, 2 Aug 2018 12:32:33 +0100
Subject: Fix RSA_set0_key() usage to make verify work with OpenSSL 1.1

Fixes #43
---
 src/common.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/common.cc b/src/common.cc
index 56d910a..b6f573e 100644
--- a/src/common.cc
+++ b/src/common.cc
@@ -57,7 +57,7 @@ RSA_set0_key(RSA *rsa, BIGNUM *n, BIGNUM *e, BIGNUM *d)
   rsa->n = n;
   rsa->e = e;
   rsa->d = d;
-  return 0;
+  return 1;
 }
 #endif
 #ifndef HAVE_RSA_GET0_KEY
@@ -803,8 +803,8 @@ public_decrypt(const Key& key, const std::string& sig)
 {
   // Load key.
   RSAWrap rsa;
-  if (RSA_set0_key(rsa.get(), string2bn(key.modulus), string2bn(key.exponent),
-                   NULL)) {
+  if (!RSA_set0_key(rsa.get(), string2bn(key.modulus), string2bn(key.exponent),
+                    NULL)) {
     throw std::runtime_error("RSA_set0_key failed");
   }