Access management method

A computer-implemented method of managing access to a resource through a communication network by a group of users comprising a first user and at least one second user, the method comprising:

• assigning beforehand, to each user of the group, a secret information specific to the user, and assigning beforehand, to the resource, a secret information specific to the resource, said resource specific secret information being determined as a function of the user specific secret information of all the users;
• receiving from the first user a first request for accessing the resource, said first request including a secret information given by the first user, and verifying that the secret information given by the first user corresponds to the secret information specific to the first user;
• verifying, using a processor of the computer, that all the users of the group have requested access to said resource through the communication network and have given the secret information specific to each user;
• determining a value of the resource specific secret information from all the user specific secret information given, and comparing said value with the assigned resource specific secret information;
• and
• authorizing all the users to access the resource if said determined value of the resource specific secret information equals the assigned resource specific secret information.