CryptoJS encrypted string can pass different parameters in python can only pass a string? How to implement the second CryptoJS implementation in python ,how to get clientKey2,This will only give the first result.Thanks!
> saltedPassword=CryptoJS.PBKDF2("key", "salt", {keySize: 8,iterations:500,hasher: CryptoJS.algo.SHA256});
> clientKey1=CryptoJS.HmacSHA256(saltedPassword.toString(), "Client Key")
> clientKey2=CryptoJS.HmacSHA256(saltedPassword, "Client Key")
> clientKey1.toString()
> "857ef8988876a3bb6bcadb85ca257787074e73e830d7dc14c1f838ba46aef1f5"
> clientKey2.toString()
> "9a8574da9b276ee1162dcb92071df587f4513bc03060bda1e9b3897d46233416"
> saltedPassword.toString()
> "6e441ccd26e6b35198b4b17457dc0266d36b751d0062b5850b0e302ceb1d6dcc"
i use this way can get clientKey1,
import hashlib
import hmac
def HmacSHA256(k,v):
message = bytes(k).encode('utf-8')
secret = bytes(v).encode('utf-8')
signature = hmac.new(secret, message, digestmod=hashlib.sha256).hexdigest()
return signature
signature = HmacSHA256("6e441ccd26e6b35198b4b17457dc0266d36b751d0062b5850b0e302ceb1d6dcc","Client Key")
print signature
How to get the second result in Python,Thanks!
To get the desired clientKey2 you need to encode the hex digits of your saltedPassword string to bytes. One way to do that which works on both Python 2 & Python 3 is to use binascii.unhexlify.
Your HmacSHA256 function is a bit odd. It won't work on Python 3, since bytes objects don't have an .encode method. In Python 2, bytes is just a synonym for str.
Anyway, here's some code that works on both Python 2 & Python 3.
from __future__ import print_function
import hashlib
import hmac
import binascii
key = "Client Key".encode()
salted = "6e441ccd26e6b35198b4b17457dc0266d36b751d0062b5850b0e302ceb1d6dcc"
raw = binascii.unhexlify(salted)
signature = hmac.new(key, salted.encode(), digestmod=hashlib.sha256).hexdigest()
print(signature)
signature = hmac.new(key, raw, digestmod=hashlib.sha256).hexdigest()
print(signature)
output
857ef8988876a3bb6bcadb85ca257787074e73e830d7dc14c1f838ba46aef1f5
9a8574da9b276ee1162dcb92071df587f4513bc03060bda1e9b3897d46233416
The output is identical on Python 2 & Python 3.
BTW, it would be simpler to do this task in Python 3, which makes a clean distinction between text and byte strings. Also, the Python 3 hashlib module has a pbkdf2 function.