import json import base64, time, os, struct, secrets, hashlib from cryptography.hazmat.primitives import hashes from cryptography.hazmat.primitives.asymmetric import padding from cryptography.hazmat.backends import default_backend from cryptography.hazmat.primitives import serialization from Conf.golob import mchid, serial_no, appId def generate_signature(payload): # 请求参数 url_path = "/v3/pay/transactions/jsapi" timestamp = f"{int(time.time())}" nonce_str = secrets.token_hex(16).upper() # 转换 payload 为 JSON 字符串，保持中文字符 json_payload = json.dumps(payload, ensure_ascii=False, indent=2) # 将每一行的末尾添加 \n # formatted_payload = '\n'.join(line + '\\n' for line in json_payload.splitlines()) # 构造待签名字符串 sign_string = r'POST\n{}\n{}\n{}\n{}\n'.format(url_path, timestamp, nonce_str, json_payload) print(sign_string) # 读取私钥 with open("apiclient_key.pem", "rb") as key_file: private_key = serialization.load_pem_private_key( key_file.read(), password=None, backend=default_backend() ) # Create a SHA-256 hash of the data digest = hashlib.sha256(sign_string.encode()).digest() # Sign the hash with the private key signature = private_key.sign( digest, padding.PKCS1v15(), hashes.SHA256() ) # Encode the signature in base64 base64_signature = base64.b64encode(signature).decode('utf-8') rep_header = { "Authorization": f'WECHATPAY2-SHA256-RSA2048 mchid="{mchid}",nonce_str="{nonce_str}",signature="{base64_signature}",timestamp="{timestamp}",serial_no="{serial_no}"', 'Accept': "application/json", "Content-Type": "application/json" } return rep_header if __name__ == '__main__': generate_signature() 这块签名有问题吗

一个公司可以最多支持几个小程序