Getting error while hashing password using Bcrypt in Python

Question

I am getting error while hashing the pain text password using Bcrypt in Python. I am providing the error below.

Traceback (most recent call last):
  File "hash.py", line 3, in <module>
    hashed = hashpw(plaintext_password, gensalt(log_rounds=13))
TypeError: gensalt() got an unexpected keyword argument 'log_rounds'

My code is given below.

from bcrypt import hashpw, gensalt
plaintext_password = 'subhra123@'
hashed = hashpw(plaintext_password, gensalt(log_rounds=13))
print hashed

Here I need to hash my password.

well looks like gensalt() does not take log_rounds as a parameter? did you look at the docs to see what exactly to pass? — N. Ivanov
– N. Ivanov, Commented Sep 20, 2017 at 8:59

N. Ivanov · Accepted Answer · 2017-09-20 09:05:47Z

2

Your error comes from log_rounds, you simply should just use the number. Here is an example:

hashed = hashpw(plaintext_password, gensalt(13))

From the official docs:

Adjustable Work Factor One of bcrypt’s features is an adjustable logarithmic work factor. To adjust the work factor merely pass the desired number of rounds to bcrypt.gensalt(rounds=12) which defaults to 12):

Working demo:

import bcrypt
password = b"super secret password"
# Hash a password for the first time, with a certain number of rounds
hashed = bcrypt.hashpw(password, bcrypt.gensalt(14))
# Check that a unhashed password matches one that has previously been
#   hashed
if bcrypt.hashpw(password, hashed) == hashed:
    print("It Matches!")
else:
    print("It Does not Match :(")

Here is a link to the docs, where it specifies how to work with this.

Hope this helps!

edited Sep 20, 2017 at 9:05

answered Sep 20, 2017 at 9:00

N. Ivanov

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MegaIng · Accepted Answer · 2017-09-20 09:00:50Z

2

I thing you want to use gensalt(13) or gensalt(rounds=13) instead of gensalt(log_rounds=13).

answered Sep 20, 2017 at 9:00

MegaIng

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