Add auth-token code to keystoneclient, along with supporting files

This step in the process duplicates the auth-token code to keystoneclient but,
for the moment, leaves a copy in its origional location in keystone.
Testing for auth-token is also copied across, as is the cms support file.

Although no other project will yet pick up the code here in the client, since
the paste.ini files haev not yet been updated, it would work if anyone
did reference it.

Once the client code is in, the next step is to update all the other
project paste files, and then finally retire the code from keystone.

Change-Id: I88853a373d406020d54b61cba5a5e887380e3b3e

1 files changed, 7 insertions, 0 deletions

diff --git a/keystoneclient/utils.py b/keystoneclient/utils.py
index 36ec41b..225afe7 100644
--- a/keystoneclient/utils.py
+++ b/keystoneclient/utils.py
@@ -1,4 +1,5 @@
 import uuid
+import hashlib
 
 import prettytable
 
@@ -114,3 +115,9 @@ def string_to_bool(arg):
         return arg
 
     return arg.strip().lower() in ('t', 'true', 'yes', '1')
+
+
+def hash_signed_token(signed_text):
+    hash_ = hashlib.md5()
+    hash_.update(signed_text)
+    return hash_.hexdigest()