阿里云API签名

python3阿里云API签名

import uuid,base64,sys,hashlib,hmac,requests
from datetime import datetime
from urllib import parse
class AliAuth(object):
    Timestamp = datetime.utcnow().isoformat()
    SignatureNonce = str(uuid.uuid1())
    def __init__(self, config, Id=None, key=None):
        assert config['Action'], "Value error"
        self.config = config
        self.url = 'http://ecs.aliyuncs.com/'
        self.id  = ''  #此处填阿里云AK
        self.Key = ''  #此处填阿里云AK
        self.__data = dict({
            "AccessKeyId": self.id,
            "SignatureMethod": 'HMAC-SHA1',
            "SignatureVersion": "1.0",
            "SignatureNonce": self.SignatureNonce,
            "Timestamp": self.Timestamp,
            "Version": "2014-05-26",
            "Format": "JSON"
        }, **self.config)

    @classmethod
    def reload(cls, body):
        cls.Timestamp = datetime.utcnow().isoformat()
        cls.SignatureNonce = str(uuid.uuid1())
        return cls(config=body)

    @property
    def data(self):
        return self.__data

    @data.setter
    def data(self, value):
        if self.__data:
            raise AssertionError("not allow opeartion")
        self.__data = value

    @staticmethod
    def percent_encode(encodeStr):
        if isinstance(encodeStr, bytes):
            encodeStr = encodeStr.decode(sys.stdin.encoding)
        res = parse.quote_plus(encodeStr.encode('utf-8'), '')
        res = res.replace('+', '%20').replace('*', '%2A').replace('%7E', '~')
        return res

    def auth(self):
        base = sorted(self.data.items(), key=lambda data:data[0])
        canstring = ''
        for k, v in base:
            canstring += '&' + self.percent_encode(k) + '=' + self.percent_encode(v)
        self.Key += "&"
        data = 'POST&%2F&' + self.percent_encode(canstring[1:])
        self._salt(data)
        return self.data

    def _salt(self, data):
        result = data.encode(encoding='utf-8')
        uri = hmac.new(self.Key.encode("utf-8"), result, hashlib.sha1).digest()
        key = base64.b64encode(uri).strip()
        self.data['Signature'] = key
        return self.data
if __name__ == '__main__':
    data={"Action":"DescribeRegions"}
    s = AliAuth(config=data)
    token = s.auth()
    print(token)
    response = requests.post(url="http://ecs.aliyuncs.com/",data=token)
    print(response.text)