python实现银联支付和支付宝支付接入

import OpenSSL
import json
import time
import urllib
import base64
 
from django.conf import settings
 
def build_sign(param_map, sign_type="RSA"):
 '''
 Doc: https://doc.open.alipay.com/doc2/detail.htm?treeId=200&articleId=105351&docType=1
 '''
 # 将筛选的参数按照第一个字符的键值ASCII码递增排序（字母升序排序），如果遇到相同字符则按照第二个字符的键值ASCII码递增排序，以此类推。
 sort_param = sorted([(key, unicode(value, settings.ALIPAY_CHARSET).encode(settings.ALIPAY_CHARSET)) for key, value in param_map.iteritems()], key=lambda x: x[0])
 # 将排序后的参数与其对应值，组合成“参数=参数值”的格式，并且把这些参数用&字符连接起来，此时生成的字符串为待签名字符串。SDK中已封装签名方法，开发者可直接调用，详见SDK说明。
 # 如自己开发，则需将待签名字符串和私钥放入SHA1 RSA算法中得出签名（sign）的值。
 content = '&'.join(['='.join(x) for x in sort_param])
 return base64.encodestring(OpenSSL.crypto.sign(settings.ALIPAY_APP_PRIVATE_KEY_OBJ, content, 'sha1'))
 
def build_params(out_trade_no, subject, body, total_amount):
 '''
 Doc：https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7629140.0.0.MVkRGo&treeId=193&articleId=105465&docType=1
 将参数按照支付宝规定组织并签名之后，返回
 '''
 params = {}
 # 获取配置文件
 params['app_id']   = settings.ALIPAY_APPID
 params['method']   = settings.ALIPAY_METHOD
 params['format']   = settings.ALIPAY_FORMAT
 params['charset']   = settings.ALIPAY_CHARSET
 params['sign_type']   = settings.ALIPAY_SIGN_TYPE
 params['sign_type']   = settings.ALIPAY_SIGN_TYPE
 params['timestamp']   = time.strftime('%Y-%m-%d %H:%M:%S')
 params['version']   = settings.ALIPAY_VERSION
 params['notify_url']  = settings.ALIPAY_NOTIFY_URL
 
 # 业务参数
 params['biz_content'] = {}
 params['biz_content']['body']    = body   # 订单描述、订单详细、订单备注，显示在支付宝收银台里的“商品描述”里
 params['biz_content']['subject']   = subject  # 商品的标题/交易标题/订单标题/订单关键字等。
 params['biz_content']['out_trade_no']  = out_trade_no # 商户网站唯一订单号 
 params['biz_content']['total_amount']  = '%.2f' % (float(total_amount) / 100) # 订单总金额，单位为元，精确到小数点后两位，取值范围[0.01,100000000] 
 params['biz_content']['product_code']  = settings.ALIPAY_APP_PRODUCT_CODE
 params['biz_content']      = json.dumps(params['biz_content'], separators=(',', ':'))
 
 params['sign'] = build_sign(params)
 
 return urllib.urlencode(params)
 
def check_sign(message, sign):
 '''Doc: https://doc.open.alipay.com/docs/doc.htm?spm=a219a.7629140.0.0.dDRpeK&treeId=204&articleId=105301&docType=1'''
 try:
  OpenSSL.crypto.verify(settings.ALIPAY_PUBLIC_KEY_OBJ, sign, message, 'SHA1')
  return True
 except Exception as _:
  return False

# 支付宝开发者公钥（支付宝生成）
ALIPAY_PUBLIC_KEY = os.path.join(BASE_DIR, 'utils/paycenter/alipay/certs/alipay_public_key')
_ALIPAY_PUBLIC_KEY_OBJ_PUB = OpenSSL.crypto.load_publickey(OpenSSL.crypto.FILETYPE_PEM, open(ALIPAY_PUBLIC_KEY).read())
_ALIPAY_PUBLIC_KEY_OBJ_X509 = OpenSSL.crypto.X509()
_ALIPAY_PUBLIC_KEY_OBJ_X509.set_pubkey(_ALIPAY_PUBLIC_KEY_OBJ_PUB)
ALIPAY_PUBLIC_KEY_OBJ = _ALIPAY_PUBLIC_KEY_OBJ_X509

# 支付宝开发者应用私钥(接入方生成)
ALIPAY_APP_PRIVATE_KEY = os.path.join(BASE_DIR, 'utils/paycenter/alipay/certs/alipay_app_private_key')
ALIPAY_APP_PRIVATE_KEY_OBJ = OpenSSL.crypto.load_privatekey(OpenSSL.crypto.FILETYPE_PEM, open(ALIPAY_APP_PRIVATE_KEY).read(), None)

import time
import hashlib
import urllib, urllib2
import base64
import OpenSSL
from django.conf import settings
 
def build_sign(param_map, sign_type="RSA"):
 '''构建签名'''
 # 将筛选的参数按照第一个字符的键值ASCII码递增排序（字母升序排序），如果遇到相同字符则按照第二个字符的键值ASCII码递增排序，以此类推。
 sort_param = sorted([(key, unicode(value, settings.UNIONPAY_ENCODING).encode(settings.UNIONPAY_ENCODING)) for key, value in param_map.iteritems()], key=lambda x: x[0])
 content = '&'.join(['='.join(x) for x in sort_param])
 message = hashlib.sha1(content).hexdigest()
 return base64.b64encode(OpenSSL.crypto.sign(settings.UNIONPAY_PRIVATE_KEY_OBJ, message, 'sha1'))
 
def build_params(out_trade_no, total_amount):
 params = {}
 # 获取配置信息
 params['accType'] = settings.UNIONPAY_ACC_TYPE
 params['accessType'] = settings.UNIONPAY_ACCESS_TYPE
 params['backUrl'] = settings.UNIONPAY_BACK_URL
 params['frontUrl'] = settings.UNIONPAY_FRONT_URL
 params['bizType'] = settings.UNIONPAY_BIZ_TYPE
 params['certId'] = settings.UNIONPAY_CERT_ID
 params['channelType'] = settings.UNIONPAY_CHANNEL_TYPE
 params['currencyCode'] = settings.UNIONPAY_CURRENCY_CODE
 params['encoding'] = settings.UNIONPAY_ENCODING
 params['merId'] = settings.UNIONPAY_MER_ID
 params['signMethod'] = settings.UNIONPAY_SIGN_METHOD
 params['txnType'] = settings.UNIONPAY_TXN_TYPE
 params['txnSubType'] = settings.UNIONPAY_TXN_SUBTYPE
 params['version'] = settings.UNIONPAY_VERSION
 
 params['orderId'] = out_trade_no
 params['txnAmt'] = '%d' % int(total_amount) # 单位为分
 params['txnTime'] = time.strftime('%Y%m%d%H%M%S') # 
 
 params['signature'] = build_sign(params)
#  return params
 return urllib.urlencode(params)
 
def check_sign(message, sign):
 try:
  OpenSSL.crypto.verify(settings.UNIONPAY_PUBLIC_KEY_OBJ, sign, message, 'SHA1')
  return True
 except Exception as _:
  return False

# 商户私钥证书
UNIONPAY_APP_PRIVATE_KEY_CERT = os.path.join(UNIONPAY_CERTS_PATH, UNIONPAY_APP_PRIVATE_KEY_CERT_FILENAME) # PKCS12 format
UNIONPAY_PRIVATE_KEYSTORE = OpenSSL.crypto.load_pkcs12(open(UNIONPAY_APP_PRIVATE_KEY_CERT).read(), UNIONPAY_APP_PRIVATE_KEY_CERT_PASSWORD)
UNIONPAY_PRIVATE_KEY_OBJ = UNIONPAY_PRIVATE_KEYSTORE.get_privatekey()

# 银联公钥证书
UNIONPAY_PUBLIC_KEY_CERT = os.path.join(UNIONPAY_CERTS_PATH, UNIONPAY_PUBLIC_KEY_CERT_FILENAME)
UNIONPAY_PUBLIC_KEY_OBJ = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM, open(UNIONPAY_PUBLIC_KEY_CERT).read())