77 lines
2.3 KiB
Python
77 lines
2.3 KiB
Python
from base64 import b64encode
|
|
from io import BytesIO
|
|
|
|
from Crypto.Cipher import PKCS1_v1_5 as Cipher_pksc1_v1_5
|
|
from Crypto.PublicKey import RSA
|
|
from PIL import Image
|
|
|
|
from ddddocr import DdddOcr
|
|
|
|
|
|
def encrypt(t):
|
|
public_key = "-----BEGIN PUBLIC KEY-----\nMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQD5uIDebA2qU746e/NVPiQSBA0Q3J8/G23zfrwMz4qoip1vuKaVZykuMtsAkCJFZhEcmuaOVl8nAor7cz/KZe8ZCNInbXp2kUQNjJiOPwEhkGiVvxvU5V5vCK4mzGZhhawF5cI/pw2GJDSKbXK05YHXVtOAmg17zB1iJf+ie28TbwIDAQAB\n-----END PUBLIC KEY-----"
|
|
rsa_key = RSA.importKey(public_key)
|
|
cipher = Cipher_pksc1_v1_5.new(rsa_key)
|
|
cipher_text = b64encode(cipher.encrypt(t.encode()))
|
|
return cipher_text.decode()
|
|
|
|
|
|
def md5(s):
|
|
import hashlib
|
|
m = hashlib.md5()
|
|
m.update(s.encode())
|
|
return m.hexdigest()
|
|
|
|
|
|
def cap_recognize(cap):
|
|
return DdddOcr().classification(denoise(cap))
|
|
|
|
|
|
def denoise(cap):
|
|
img = Image.open(BytesIO(cap))
|
|
steps = ((1, 1), (1, 0), (1, -1), (0, 1), (0, -1), (-1, 1), (-1, 0), (-1, -1))
|
|
_PX_BACKGROUND = (250, 250, 250)
|
|
_PX_TARGET = (250, 0, 0)
|
|
threshold, repeat = 7, 2
|
|
|
|
for _ in range(repeat):
|
|
for j in range(img.width):
|
|
for i in range(img.height):
|
|
px = img.getpixel((j, i))
|
|
if px == _PX_BACKGROUND:
|
|
continue
|
|
count = 0
|
|
if px[0] < px[1] + px[2]:
|
|
count = 2
|
|
for x, y in steps:
|
|
if 0 <= j + x < img.width and 0 <= i + y < img.height:
|
|
if img.getpixel((j + x, i + y)) == _PX_BACKGROUND:
|
|
count += 1
|
|
if count >= threshold:
|
|
img.putpixel((j, i), _PX_BACKGROUND)
|
|
else:
|
|
img.putpixel((j, i), _PX_TARGET)
|
|
|
|
buf = BytesIO()
|
|
img.save(buf, format='PNG')
|
|
return buf.getvalue()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
import requests
|
|
import re
|
|
|
|
bjySession = requests.session()
|
|
bjySession.timeout = 5 # set session timeout
|
|
touch = bjySession.get(url="https://m.bjyouth.net/site/login")
|
|
capUrl = "https://m.bjyouth.net" + re.findall(
|
|
r'src="(/site/captcha.+)" alt=', touch.text)[0]
|
|
cap1 = bjySession.get(url=capUrl).content
|
|
cap2 = denoise(cap1)
|
|
|
|
img = Image.open(BytesIO(cap1))
|
|
img.show()
|
|
|
|
img = Image.open(BytesIO(cap2))
|
|
img.show()
|