From 442bf725ef61cde4f82077421960738b0d1da2ed Mon Sep 17 00:00:00 2001
From: Roman Zeyde <roman.zeyde@gmail.com>
Date: Wed, 7 Jun 2017 23:11:57 +0300
Subject: [PATCH] gpg: fail SCD-related requests

---
 libagent/gpg/agent.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/libagent/gpg/agent.py b/libagent/gpg/agent.py
index 81fc9ff..892fdcc 100644
--- a/libagent/gpg/agent.py
+++ b/libagent/gpg/agent.py
@@ -92,9 +92,15 @@ class Handler(object):
             b'PKSIGN': lambda conn, _: self.pksign(conn),
             b'PKDECRYPT': lambda conn, _: self.pkdecrypt(conn),
             b'HAVEKEY': lambda _, args: self.have_key(*args),
-            b'KEYINFO': lambda conn, _: self.key_info(conn)
+            b'KEYINFO': lambda conn, _: self.key_info(conn),
+            b'SCD': lambda *_: self.fail_scd(),
         }
 
+    @staticmethod
+    def fail_scd():
+        """No support for smart-card device protocol."""
+        raise AgentError(b'ERR 100696144 No such device <SCD>')
+
     @util.memoize
     def get_identity(self, keygrip):
         """