From 456ab6898636cc770dd6faf105bb176f16aa5f79 Mon Sep 17 00:00:00 2001
From: Ned Batchelder <ned@edx.org>
Date: Wed, 18 Sep 2019 14:49:03 -0400
Subject: [PATCH] Check for ascii with an explicit ascii encode. BOM-728

---
 openedx/core/djangoapps/credit/signature.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/openedx/core/djangoapps/credit/signature.py b/openedx/core/djangoapps/credit/signature.py
index 47aebfc468..371d4bf941 100644
--- a/openedx/core/djangoapps/credit/signature.py
+++ b/openedx/core/djangoapps/credit/signature.py
@@ -36,7 +36,7 @@ def get_shared_secret_key(provider_id):
 
     if isinstance(secret, six.text_type):
         try:
-            secret = str(secret)
+            secret.encode('ascii')      # pylint: disable=pointless-statement
         except UnicodeEncodeError:
             secret = None
             log.error(u'Shared secret key for credit provider "%s" contains non-ASCII unicode.', provider_id)