sign.py

from Crypto.PublicKey import RSA
from Crypto.Cipher import PKCS1_v1_5
from Crypto.Hash import SHA256
from base64 import b64encode, b64decode
import hashlib
import os

# Replace with the path to your RSA public key file
public_key_file_path = 'rsa_public_key.key'

def load_public_key(file_path):
    with open(file_path, 'rb') as file:
        key_data = file.read()
        public_key = RSA.import_key(key_data)
    return public_key

def rsa_encrypt_by_public_key(data, public_key):
    cipher = PKCS1_v1_5.new(public_key)
    encrypted_data = cipher.encrypt(data)
    return encrypted_data

def sha256_string(data):
    sha256 = hashlib.sha256()
    sha256.update(data.encode('utf-8'))
    return sha256.digest()

PUBLIC_KEY = load_public_key(public_key_file_path)

input_dict = {
    'appId': 1,
}

def obtain_sign(input_dict):
    sorted_items = sorted(input_dict.items())
    data = '&'.join(f'{k}={v}' for k, v in sorted_items) + 'D9519A4B756946F081B7BB5B5E8D1197'
    hashed_data = sha256_string(data)
    encrypted_data = rsa_encrypt_by_public_key(hashed_data, PUBLIC_KEY)
    return b64encode(encrypted_data).decode('utf-8')

sign_result = obtain_sign(input_dict)
print("Generated signature:", sign_result)

https://github.com/JuanmanDev/ConnectLifeInspection_1/blob/main/other_decompiled/assets/rsa_public_key.key