37 lines
870 B
Python
37 lines
870 B
Python
from hashlib import md5
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from urllib.parse import urlencode, unquote_plus
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def get_signature(key: str, data: dict):
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"""
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签名过程如下：
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0. 忽略已经存在的 sign
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1. 将所有参数名按照字典序排列，并以 "参数1=值1&参数2=值2&参数3=值3" 的形式排序
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2. 将上面的内容加上 "&key=KEY"（KEY 为设置的商户密钥）
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3. 将组合后的字符串转换为大写 MD5
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:param key: 商户密钥
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:param data: 要签名的参数字典
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:return: 签名后的字符串
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:rtype: str
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"""
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d = data.copy()
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# pop 掉 sign 字段
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try:
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d.pop('sign')
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except KeyError:
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pass
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# pop 掉无效字段
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p = sorted([x for x in d.items() if (x[1] or x[1] == 0)], key=lambda x: x[0])
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p.append(('key', key))
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p = unquote_plus(urlencode(p))
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h = md5()
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h.update(p.encode())
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r = h.hexdigest().upper()
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return r |