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alipay

时间:2020-05-22 00:14:49      阅读:119      评论:0      收藏:0      [点我收藏+]

标签:parse   签名   订单   publickey   dfa   value   amount   pycha   soft   

# -*- coding: utf-8 -*-
# !/usr/bin/env python
# Software: PyCharm
# __author__ == "YU HAIPENG"
# fileName: alipaySign.py
# Month: 五月
# time: 2020/5/21 18:59
# noqa
""" Write an introduction to the module here """

from datetime import datetime
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import SHA256
from urllib.parse import quote_plus
from base64 import decodebytes, encodebytes
import json


class AliPay(object):
"""
支付宝支付接口(PC端支付接口)
"""

def __init__(self, appid, app_notify_url, app_private_key_path,
alipay_public_key_path, return_url, debug=False):
self.appid = appid
self.app_notify_url = app_notify_url
self.app_private_key_path = app_private_key_path
self.return_url = return_url
with open(self.app_private_key_path) as fp:
self.app_private_key = RSA.importKey(fp.read())
self.alipay_public_key_path = alipay_public_key_path
with open(self.alipay_public_key_path) as fp:
self.alipay_public_key = RSA.importKey(fp.read())
if debug is True:
self.__gateway = "https://openapi.alipaydev.com/gateway.do"
else:
self.__gateway = "https://openapi.alipay.com/gateway.do"

@property
def get_way(self):
return self.__gateway

def direct_pay(self, subject, out_trade_no, total_amount, **kwargs):
biz_content = {
"subject": subject,
"out_trade_no": out_trade_no,
"total_amount": total_amount,
"product_code": "FAST_INSTANT_TRADE_PAY",
# "qr_pay_mode":4
}

biz_content.update(kwargs)
data = self._build_body("alipay.trade.page.pay", biz_content, self.return_url)
return self._sign_data(data)

def _build_body(self, method, biz_content, return_url=None):
data = {
"app_id": self.appid,
"method": method,
"charset": "utf-8",
"sign_type": "RSA2",
"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
"version": "1.0",
"biz_content": biz_content
}

if return_url is not None:
data["notify_url"] = self.app_notify_url
data["return_url"] = self.return_url

return data

def _sign_data(self, data):
data.pop("sign", None)
# 排序后的字符串
unsigned_items = self._ordered_data(data)
unsigned_string = "&".join("{0}={1}".format(k, v) for k, v in unsigned_items)
sign = self._sign(unsigned_string.encode("utf-8"))
# ordered_items = self.ordered_data(data)
quoted_string = "&".join("{0}={1}".format(k, quote_plus(v)) for k, v in unsigned_items)

# 获得最终的订单信息字符串
signed_string = quoted_string + "&sign=" + quote_plus(sign)
return signed_string

def _ordered_data(self, data): # noqa
"""

:param data:
:return:
"""
complex_keys = []
for key, value in data.items():
if isinstance(value, dict):
complex_keys.append(key)

# 将字典类型的数据dump出来
for key in complex_keys:
data[key] = json.dumps(data[key], separators=(‘,‘, ‘:‘))

return sorted([(k, v) for k, v in data.items()])

def _sign(self, unsigned_string):
# 开始计算签名
key = self.app_private_key
signer = PKCS1_v1_5.new(key)
signature = signer.sign(SHA256.new(unsigned_string))
# base64 编码,转换为unicode表示并移除回车
sign = encodebytes(signature).decode("utf8").replace("\n", "")
return sign

def _verify(self, raw_content, signature):
# 开始计算签名
key = self.alipay_public_key
signer = PKCS1_v1_5.new(key)
digest = SHA256.new()
digest.update(raw_content.encode("utf8"))
if signer.verify(digest, decodebytes(signature.encode("utf8"))):
return True
return False

def verify(self, data, signature):
"""

:param data:
:param signature: 签名
:return:
"""
if "sign_type" in data:
sign_type = data.pop("sign_type")
# 排序后的字符串
unsigned_items = self._ordered_data(data)
message = "&".join(u"{}={}".format(k, v) for k, v in unsigned_items)
return self._verify(message, signature)


if __name__ == ‘__main__‘:
alipay = AliPay(
appid=‘1231‘,
app_notify_url=‘‘,
app_private_key_path=‘‘,
alipay_public_key_path=‘‘, return_url=‘‘,
debug=True
)
n = alipay.direct_pay(‘adfa‘, ‘fdasda‘, 12132)
pay_url = f"{alipay.get_way}?{n}"

alipay.verify({}, signature=‘132132‘)

alipay

标签:parse   签名   订单   publickey   dfa   value   amount   pycha   soft   

原文地址:https://www.cnblogs.com/yuhaipeng/p/12934163.html

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