auth.py 文件源码

def _calc_signature(self, params, *args):
        boto.log.debug('using _calc_signature_1')
        hmac = self._get_hmac()
        keys = list(params.keys())
        keys.sort(key=lambda x: x.lower())
        pairs = []
        for key in keys:
            hmac.update(key.encode('utf-8'))
            val = boto.utils.get_utf8_value(params[key])
            hmac.update(val)
            pairs.append(key + '=' + urllib.parse.quote(val))
        qs = '&'.join(pairs)
        return (qs, base64.b64encode(hmac.digest()))