I am trying to transfer a code from python2 to 3. The problem happens. "pad * chr(pad)" looks like a string but when I print it out it shows . I dont know what it is really is.
<ipython-input-26-6c9679723473> in aesEncrypt(text, secKey)
43 def aesEncrypt(text, secKey):
44 pad = 16 - len(text) % 16
---> 45 text =text + pad * chr(pad)
46 encryptor = AES.new(secKey, 2, '0102030405060708')
47 ciphertext = encryptor.encrypt(text)
TypeError: can't concat str to bytes
I then tried encode() but it didnt work. I am wonder how can concat two string in python3.
<ipython-input-53-e9f33b00348a> in aesEncrypt(text, secKey)
43 def aesEncrypt(text, secKey):
44 pad = 16 - len(text) % 16
---> 45 text = text.encode("utf-8") + (pad * chr(pad)).encode("utf-8")
46 encryptor = AES.new(secKey, 2, '0102030405060708')
47 ciphertext = encryptor.encrypt(text)
AttributeError:'bytes' object has no attribute 'encode'
For the reference the original code is
作者:路人甲
链接:https://www.zhihu.com/question/31677442/answer/119959112
#encoding=utf8
import requests
from bs4 import BeautifulSoup
import re,time
import os,json
import base64
from Crypto.Cipher import AES
from pprint import pprint
Default_Header = {
'Referer':'http://music.163.com/',
'Host':'music.163.com',
'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Iceweasel/38.3.0',
'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Accept-Encoding':'gzip, deflate'
}
BASE_URL = 'http://music.163.com'
_session = requests.session()
_session.headers.update(Default_Header)
def getPage(pageIndex):
pageUrl = 'http://music.163.com/discover/playlist/?order=hot&cat=全部&limit=35&offset='+pageIndex
soup = BeautifulSoup(_session.get(pageUrl).content)
songList = soup.findAll('a',attrs = {'class':'tit f-thide s-fc0'})
for i in songList:
print i['href']
getPlayList(i['href'])
def getPlayList(playListId):
playListUrl = BASE_URL + playListId
soup = BeautifulSoup(_session.get(playListUrl).content)
songList = soup.find('ul',attrs = {'class':'f-hide'})
for i in songList.findAll('li'):
startIndex = (i.find('a'))['href']
songId = startIndex.split('=')[1]
readEver(songId)
def getSongInfo(songId):
pass
def aesEncrypt(text, secKey):
pad = 16 - len(text) % 16
text = text + pad * chr(pad)
encryptor = AES.new(secKey, 2, '0102030405060708')
ciphertext = encryptor.encrypt(text)
ciphertext = base64.b64encode(ciphertext)
return ciphertext
def rsaEncrypt(text, pubKey, modulus):
text = text[::-1]
rs = int(text.encode('hex'), 16)**int(pubKey, 16) % int(modulus, 16)
return format(rs, 'x').zfill(256)
def createSecretKey(size):
return (''.join(map(lambda xx: (hex(ord(xx))[2:]), os.urandom(size))))[0:16]
def readEver(songId):
url = 'http://music.163.com/weapi/v1/resource/comments/R_SO_4_'+str(songId)+'/?csrf_token='
headers = { 'Cookie': 'appver=1.5.0.75771;', 'Referer': 'http://music.163.com/' }
text = { 'username': '', 'password': '', 'rememberLogin': 'true' }
modulus = '00e0b509f6259df8642dbc35662901477df22677ec152b5ff68ace615bb7b725152b3ab17a876aea8a5aa76d2e417629ec4ee341f56135fccf695280104e0312ecbda92557c93870114af6c9d05c4f7f0c3685b7a46bee255932575cce10b424d813cfe4875d3e82047b97ddef52741d546b8e289dc6935b3ece0462db0a22b8e7'
nonce = '0CoJUm6Qyw8W8jud'
pubKey = '010001'
text = json.dumps(text)
secKey = createSecretKey(16)
encText = aesEncrypt(aesEncrypt(text, nonce), secKey)
encSecKey = rsaEncrypt(secKey, pubKey, modulus)
data = { 'params': encText, 'encSecKey': encSecKey }
req = requests.post(url, headers=headers, data=data)
total = req.json()['total']
if int(total) > 10000:
print songId,total
else:
pass
if __name__=='__main__':
for i in range(1,43):
getPage(str(i*35))
around line 85: encText = aesEncrypt(aesEncrypt(text, nonce), secKey)
aesEncrypt()
is called first time with data as shown with subscript '_1' and 2nd time with data shown with subscript '_2'. Notice that the type of secKey changes from a string to a list of strings, and text from a string to a bytes object.
>>> secKey_1
'0CoJUm6Qyw8W8jud'
>>> secKey_2
['e4', '1a', '61', '7c', '1e', '62', '76', '5', '94', '62', '5a', '92', '9', 'fd', '2f', '4a']
>>>
>>> text_1
'{"username": "", "password": "", "rememberLogin": "true"}'
>>> text_2
b'qjTTWCVgh3v45StLOhGtNtY3zzoImIeGkRry1Vq0LzNSgr9hDHkkh19ujd+iqbvXnzjmHDhOIA5H0z/Wf3uU5Q=='
>>>