Device and method for authentication of a remote user

摘要

The user (7) authentication technique at a distance is to access locally a machine (4) forming part of a network (5) with a distant server (3) which is administrator controlled (8) , in case of a line breakdown. Authorization is carried out by creating communications (D) between user and administrator communication (9). A predetermined calculation is passed to the server and a response obtained to the communication (RD) which is then passed to the user. The local machine compares the response transmitted with a calculation to authorize access to the local user.