Abstract: A method for negotiating reciprocal access to secured data in a computing terminal comprising authenticating, by an application in the computing terminal, the first party by means of transmitting authentication data read on the computing terminal to an application server of the computing terminal configured to store data in the computing terminal, authenticating, by the application, the second party, accepting, by the second party, a negotiation request, defining and sending, by the second party, proposed conditions of access to the secured data, negotiating and accepting, by the first party and the second party, the conditions for access to the secured data, and creating, by the application server, a negotiated digital certificate for the first party and a negotiated digital certificate for the second party, wherein each of the negotiated digital certificates is encrypted with a public key, wherein the public key is configured to control access to the secured data.

Abstract: The invention relates to a terminal (3) for the strong authentication of a user, comprising:—a reader (31, 34) of a user's authentication parameters;—a receiver of a geolocation signal (33);—an interface (37) for communication with another apparatus;—and a processor (38), extracting the date and time of the geolocation signal, generating encrypted data comprising authentication parameters read by the reader and the date and time extracted, and ordering the transmission of said encrypted data by way of the communication interface (37).

Abstract: The invention relates to a method of secure broadcasting of encrypted digital data of a proprietary entity, these data being stored in a storage module (6) of a server (5), comprising: the encryption of the digital data by means of an encryption key for the broadcasting of the digital data to the authenticated third party, and the broadcasting of these digital data to the authenticated third party.

Abstract: The invention relates to a terminal (3) for the strong authentication of a user, comprising:—a reader (31, 34) of a user's authentication parameters;—a receiver of a geolocation signal (33);—an interface (37) for communication with another apparatus;—and a processor (38), extracting the date and time of the geolocation signal, generating encrypted data comprising authentication parameters read by the reader and the date and time extracted, and ordering the transmission of said encrypted data by way of the communication interface (37).

Abstract: The invention relates to a method of secure broadcasting of encrypted digital data of a proprietary entity, these data being stored in a storage module (6) of a server (5), comprising: the encryption of the digital data by means of an encryption key for the broadcasting of the digital data to the authenticated third party, and the broadcasting of these digital data to the authenticated third party.