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-rw-r--r--wqflask/utility/hmac.py9
1 files changed, 6 insertions, 3 deletions
diff --git a/wqflask/utility/hmac.py b/wqflask/utility/hmac.py
index aa21c741..10387bb0 100644
--- a/wqflask/utility/hmac.py
+++ b/wqflask/utility/hmac.py
@@ -5,12 +5,12 @@ from flask import url_for
from wqflask import app
+
def hmac_creation(stringy):
"""Helper function to create the actual hmac"""
secret = app.config['SECRET_HMAC_CODE']
-
- hmaced = hmac.new(bytearray(secret, 'utf8'), bytearray(stringy, 'utf8'), hashlib.sha1)
+ hmaced = hmac.new(secret, stringy, hashlib.sha1)
hm = hmaced.hexdigest()
# ZS: Leaving the below comment here to ask Pjotr about
# "Conventional wisdom is that you don't lose much in terms of security if you throw away up to half of the output."
@@ -18,10 +18,12 @@ def hmac_creation(stringy):
hm = hm[:20]
return hm
+
def data_hmac(stringy):
- """Takes arbitray data string and appends :hmac so we know data hasn't been tampered with"""
+ """Takes arbitrary data string and appends :hmac so we know data hasn't been tampered with"""
return stringy + ":" + hmac_creation(stringy)
+
def url_for_hmac(endpoint, **values):
"""Like url_for but adds an hmac at the end to insure the url hasn't been tampered with"""
@@ -34,5 +36,6 @@ def url_for_hmac(endpoint, **values):
combiner = "?"
return url + combiner + "hm=" + hm
+
app.jinja_env.globals.update(url_for_hmac=url_for_hmac,
data_hmac=data_hmac)