python微信支付接口_Python微信支付APIv3签名

import time

import random

from Cryptodome.PublicKey import RSA

from Cryptodome.Signature import pkcs1_15

from Cryptodome.Hash import SHA256

from base64 import b64encode

mchid = '商户ID'

serial_no = '商户API证书序列号'

private_key = "-----BEGIN PRIVATE KEY-----\n" \

"NIIEvgIBADANBgkqhkiG9w0B3QEFAA5CBKgwggSkAgEAAoIBAQC2l/hfX5g6qjo7" \

"BcqTa+LldQpd7m4ZZEKT2BxUpYPNJ/YoZO1c3qB/+CfQQlKJYPseOsTnUeuAZ2AG" \

"z2LWuh/36gmiFX2Nw1pI0AkVwec8pB1+IqLGHzRsAaDJ++2J88TcWOuM5lOcBr6I" \

"VJOyl1ghYB4Dnuk2uid46rAZwWL3L2FZ+ktfdtePt4zOQrpILRuDNzR6TOcd1JER" \

"ylt8iDyoVTr69ALnQdhoNnofnrBK3R4sY5ON1BR01DpZM8yX8mmb6yOLjp1VoP+5" \

"n8pCPVAqZJEbwfDH90naeMZLYfoCvdaJhxHLblviZN7v4VW6Fx/W43O9sRTNPukU" \

"W5pLBP57AgMBAAECggEBAI9U6iZLzx62A7HTUPq6ZMkEQB2OEyUhe9W8fjjAGJ9R" \

"8DwzRdRx+gGaVf54IXwvwdAwB+MhfkE0ZL/Tyd2PC4s7j0ZJol5G7Ddd/tOye4cx" \

"uOkL3USyuB7UhFgpx4RT88OYlYbsQtOmw6gW5D376bWBUu46rw1Dwbp8V7JQCRTJ" \

"K+vbMj1ytgP10fg/hTQNe7RWmd+KC+OGZbBH6MxybLoR+BOwQQpwGEgoEoY9Rmlm" \

"E/8poPvdY/PLIaS2ca/rsgJ/ZhiSx6BL0DAqVkKtM9U9T0LRoZmJcCp6YgLKGA0X" \

"BrnbMXczFHFVfjmK1jw4UqWbPICsrbhF4dtIuSqZbDECgYEA4M8J4T/grNaNhQTc" \

"x6q/ylFZB3I8Qoih2YeLx7/JOBEL66jNJhHVrgyF8JChlL0J8RGMg8KdxzZ0OTEw" \

"Q5ZK4mo93cxwqFh87X4KUNaicNveCsxuEL80Bbhst7NmJKi5T2VQMR9kFd+eTwx8" \

"c5aOHX5W4RIogKyNHqvCdEqHohMCgYEAz+1/NfRtqI2F68olrtdlbReaHtlCZxRJ" \

"3XhaIT5OGjXE/0upRRx6EgDh4f+wvqpFdlutPHFTSz4H/5rBGyZ7NJ5D44WO3Z7K" \

"SdY3YJ+5J6Nu+2OX6FGZWmqyW9kgYRthzClqNduBWbgu0gRC8R8wLg1W7xe9HN5e" \

"bc0HnhnBfvkCgYBSNMNbH/2rlkVn1/BX/yNk+zxAEdDhT49HuV4u6/3Lx8gBI9fo" \

"zOrDW4b7AhhkCICDK7SjVd5WQ55ab5dDj8jQZK384Q5tMPZ17fodt27tMClQ75Js" \

"A08lrFvtDOg6DbK9ysF5RQ5XRU9hfqJfrjVHqbRhVz+CVhbAmXRhDAPvC5KBgQCX" \

"kXuCvCvXi1qNF+1CN3eS/3p0dFEITOzPSXUB+KX8SyfQJbo9S9XcG9KM6NNRGVPL" \

"RGbSwZVDKvOvqoKLpRB4ucmpJ+mNubuh+Uqi36ubrnIvRFkum5TbKR3dADivMMOo" \

"jKQEoH75BN70bvDRTbfUShsN8ZAA5EQXbDbaU9IOGQKBgEr+xQMksLCif8GrwlfJ" \

"Vrf3uyXTyY1QVRAGy9UIiM0RnsWDaGcRgNaz1K9YV3gqm7qHe2y8fzB0PLLw2TzY" \

"GUwxIttKpnEVlX1M59nmGFmQq08YNC+JRHZrvmmB0MyEBSA9lg0ugASdQQC5PGYa" \

"Rnn7p8VlUEauVmFpF6BTVZLQ\n" \

"-----END PRIVATE KEY-----"

timestamp = str(int(time.time()))

nonce_str = str(random.randint(100000, 10000000))

def sign_str(method, url_path, request_body):

"""生成欲签名字符串"""

sign_list = [

method,

url_path,

timestamp,

nonce_str,

request_body

]

return '\n'.join(sign_list) + '\n'

def sign(sign_str):

"""生成签名"""

rsa_key = RSA.importKey(private_key)

signer = pkcs1_15.new(rsa_key)

digest = SHA256.new(sign_str.encode('utf8'))

sign = b64encode(signer.sign(digest)).decode('utf8')

return sign

def authorization(method, url_path, request_body):

"""生成Authorization"""

signstr = sign_str(method, url_path, request_body)

s = sign(signstr)

authorization = 'WECHATPAY2-SHA256-RSA2048 ' \

'mchid="{mchid}",' \

'nonce_str="{nonce_str}",' \

'signature="{sign}",' \

'timestamp="{timestamp}",' \

'serial_no="{serial_no}"'.\

format(mchid=mchid,

nonce_str=nonce_str,

sign=s,

timestamp=timestamp,

serial_no=serial_no

)

return authorization

if __name__ == '__main__':

print(authorization('POST', '/v3/marketing/favor/users/openid/coupons', '{"stock_id":"123","stock_creator_mchid":"1302430101","out_request_no":"20190522_001","appid":"your appid"}'))

# Authorization WECHATPAY2-SHA256-RSA2048 mchid="1312030806",nonce_str="f0wwnSIuQN8yDr0U4bYKNmUgALcMUCLM",signature="dcFTPfaAewd+UXuXv+VA+KeGW1coUG68PtklWtsMiFGal5GxiljGUVGV60gBnIo2La1R3cxf7mOb62q7xoab9mP1SZ5dP8L+amQ9vyl+ZYTaJOg31vtkDwMU0ILNqy96SuKy+5/Q2NSCQU0fBLMWU11vbSoA2ycEsCjDEknc8Hiw+vyKkV6iGyUNBMizfwZhJWdRcWDWeyxAy0rsaZKVOpeEyJ2xPQnLX8uB+gqCIO5+vE8KYjseXPGun+Zr6i5gl7i0O/BdBfY4BDRAZsrF5v7LikptEbRwJ8+1IevIT5LaUc5J5BnGM009BuzsZzK8cphhKvepVmA8Gy0gWvfDeA==",timestamp="1592375315",serial_no="14DFFAAAA79AF4BD56CC1O55E06246E95D3PAAS0"

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