| 1234567891011121314151617181920212223 | import jwtfrom werkzeug.exceptions import Unauthorizedfrom configs import dify_configclass PassportService:    def __init__(self):        self.sk = dify_config.SECRET_KEY    def issue(self, payload):        return jwt.encode(payload, self.sk, algorithm='HS256')    def verify(self, token):        try:            return jwt.decode(token, self.sk, algorithms=['HS256'])        except jwt.exceptions.InvalidSignatureError:            raise Unauthorized('Invalid token signature.')        except jwt.exceptions.DecodeError:            raise Unauthorized('Invalid token.')        except jwt.exceptions.ExpiredSignatureError:            raise Unauthorized('Token has expired.')
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