auth.py 文件源码

def payload(self, http_request):
        body = http_request.body
        # If the body is a file like object, we can use
        # boto.utils.compute_hash, which will avoid reading
        # the entire body into memory.
        if hasattr(body, 'seek') and hasattr(body, 'read'):
            return boto.utils.compute_hash(body, hash_algorithm=sha256)[0]
        elif not isinstance(body, bytes):
            body = body.encode('utf-8')
        return sha256(body).hexdigest()