try something like this:
def hashing(plaintext, salt="", sha="512"):
""" Returns the hashed and encrypted hexdigest of a plaintext and salt"""
app = webapp2.get_app()
# Hashing
if sha == "1":
phrase = hashlib.sha1()
elif sha == "256":
phrase = hashlib.sha256()
else:
phrase = hashlib.sha512()
phrase.update("%s@%s" % (plaintext, salt))
phrase_digest = phrase.hexdigest()
# Encryption (PyCrypto)
# wow... it's so secure :)
try:
from Crypto.Cipher import AES
mode = AES.MODE_CBC
# We can not generate random initialization vector because is difficult
to retrieve them later without knowing
# a priori the hash to match. We take 16 bytes from the hexdigest to
make the vectors different for each hashed
# plaintext.
iv = phrase_digest[:16]
encryptor = AES.new(app.config.get('aes_key'), mode, iv)
ciphertext = [encryptor.encrypt(chunk) for chunk in
chunks(phrase_digest, 16)]
return ''.join(ciphertext)
except Exception, e:
logging.error("CRYPTO is not running: {}".format(e))
raise
On Monday, January 4, 2016 at 8:12:37 AM UTC+2, A. Kong wrote:
>
> Hi all,
>
> If I understand it correctly, GAE webapp2 encrypts password using SHA1
> (see method create_user as in
> https://webapp-improved.appspot.com/_modules/webapp2_extras/appengine/auth/models.html
> )
>
> I want to be able to switch to SHA-256 or other algorithm. Is there any
> official way to override this? I found this github repo and its
> recommendation seems to be rolling your own RequestHandler. Is it a good
> approach? Is there any other alternative?
>
> There is a related entry in the archived bug tracker
> https://code.google.com/p/webapp-improved/issues/detail?id=57 Is the
> comment there still up to date?
>
> Cheers
>
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