Building or enclosure termination closing and/or opening apparatus, and method for operating a building or enclosure termination

A method for operating a building or enclosure termination opening and/or closing device,

• the building or enclosure termination opening and/or closing device comprises
• an actuator that can be actuated by an actuation signal to allow or block access through a building or enclosure termination,
• a building or enclosure termination communication device configured to receive and/or transmit encrypted and/or signed messages, and
• an individual authentication device for each building or enclosure termination opening and/or closing device which initiates the actuation signal on receipt of a valid authentication code generated from one or more code keys, and
• the building or enclosure termination opening and/or closing device uses at least one first individual mobile user terminal which comprises a user terminal communication device configured to transmit and/or receive encrypted and/or signed messages, a memory configured to store at least one individual user key, and an encryption device configured to encrypt and/or sign messages with the at least one individual user key, and
• the method comprises at least one of the following:
• a first group of operations of
• providing at least one second individual mobile user terminal which comprises a user terminal communication device configured to transmit or receive encrypted and/or signed messages, a memory configured to store at least one temporary user key, and an encryption device configured to encrypt and/or sign messages with the at least one temporary user key;
• receiving or generating information about a time limit for temporary authentication of a second user by the first mobile user terminal;
• generating a temporary user key from the time limit information and the individual user key, the temporary user key including information about the individual user key and the time limit;
• forwarding the temporary user key from the first user terminal to the at least one second user terminal;
• and
• generating an individual temporary authentication code from the temporary user key by the second user terminal, so that the temporary authentication code includes information about the individual user key and the time limit;
• and
• initiating the actuation signal by the authentication device if a temporary authentication code which corresponds to a valid individual user key is received within a valid period of time determined by the time limit;
• and
• a second group of operations of
• registering a user identification information for each authorized user who uses a first individual user terminal;
• calculating an individual user key per authorized user by means of a secret device key assigned to the individual authentication device and the assigned user identification information using a unique code calculation routine;
• and
• transmitting the individual user key to the assigned first individual mobile user terminal in the course of a registration phase.