问题
I'm trying to integrate a 3rd party payment gateway (CCAvenue
) in Django 1.11, Python 3.5.2
The reference code provided by the 3rd party uses the deprecated library md5 to encrypt texts.
from Crypto.Cipher import AES
import md5
def pad(data):
length = 16 - (len(data) % 16)
data += chr(length)*length
return data
def encrypt(plainText,workingKey):
iv = '\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f'
plainText = pad(plainText)
encDigest = md5.new ()
encDigest.update(workingKey)
enc_cipher = AES.new(encDigest.digest(), AES.MODE_CBC, iv)
encryptedText = enc_cipher.encrypt(plainText).encode('hex')
return encryptedText
How do I make the above encrypt()
method Python 3 compatible using the hashlib
library of Python 3? Can you post the whole method?
回答1:
Here's a Python 3 compatible way of doing the same:
from binascii import hexlify, unhexlify
from Crypto.Cipher import AES
from hashlib import md5
from django.utils.encoding import force_bytes
iv = '\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f'
BS = 16
def _pad(data):
return data + (BS - len(data) % BS) * chr(BS - len(data) % BS)
def _unpad(data):
return data[0:-ord(data[-1])]
def encrypt(plain_text, working_key):
plain_text = _pad(plain_text)
enc_cipher = AES.new(md5(force_bytes(working_key)).digest(), AES.MODE_CBC, _iv)
return hexlify(enc_cipher.encrypt(plain_text)).decode('utf-8')
def decrypt(cipher_text, working_key):
encrypted_text = unhexlify(cipher_text)
dec_cipher = AES.new(md5(force_bytes(working_key)).digest(), AES.MODE_CBC, _iv)
return _unpad(dec_cipher.decrypt(encrypted_text).decode('utf-8'))
来源:https://stackoverflow.com/questions/44992024/correctly-migrate-from-python-2-md5-library-to-python-3-hashlib