Am 04.11.2010 17:15, schrieb anatoly techtonik:
> pickle is insecure, marshal too.
If the transport or storage layer is not save, you should
cryptographically sign the data anyway::
def pickle_encode(data, key):
msg = base64.b64encode(pickle.dumps(data, -1))
sig = base64.b64encode(hmac.new(key, msg).digest())
return sig + ':' + msg
def pickle_decode(data, key):
if data and ':' in data:
sig, msg = data.split(':', 1)
if sig == base64.b64encode(hmac.new(key, msg).digest()):
return pickle.loads(base64.b64decode(msg))
raise pickle.UnpicklingError("Wrong or missing signature.")
Bottle (a web framework) uses a similar approach to store non-string
data in client-side cookies. I don't see a (security) problem here.
--
Mit freundlichen Grüßen
Marcel Hellkamp
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