Abstract: Authentication and secure wireless data exchange is provided between a chip with an identification code and a dedicated server via a read unit, which carries out contactless read and/or write operations on the chip. The read unit connects to a computer terminal connected to a communication network. A first connection is first established to the communication network from the computer terminal connected to the read unit to the dedicated server using a defined secure data communication protocol. A second connection to the communication network from the read unit to the dedicated server is then established using the computer terminal as a secure data transmission tunnel to directly exchange encrypted data between the read unit and the server invisibly to the computer terminal. Finally, wireless personalized communication is carried out between the read unit and the chip once the chip is identified upon request of the dedicated server.

Abstract: The method is for coded marking of a product of small size, such as horological or jewelry product (10). The method consists in carrying out a first mathematical operation of encrypting an identifier (13), such as a serial number of the product to be marked using a specific security algorithm key to obtain a first authenticator. The first authenticator includes a first data length defined by a first large number of alphanumerical characters. This first authenticator is encrypted using a second mathematical operation using a Hash type function into a second authenticator. This second authenticator includes a second data length defined by a second reduced number of alphanumerical characters shorter than the first number of characters. The second authenticator is converted into a coded image, which is preferably a two dimensional barcode (11) so as to be placed on the product as the coded mark in order to allow said product to be authenticated.

Abstract: The method allows authentication and secure wireless data exchange between a chip with an identification code (1?) and a dedicated server (35) via a read unit (5). This read unit is arranged for carrying out contactless read and/or write operations on the chip. The read unit is connected to a computer terminal (30) connected to a communication network (300) of computer terminals. For the method, a first connection is first of all established to the communication network from the computer terminal connected to the read unit to the dedicated server using a defined secure data communication protocol. A second connection to the communication network from the read unit to the dedicated server is then established. For this second connection, the computer terminal is used as a secure data transmission tunnel in order to directly exchange encrypted data between the read unit and the server in a manner invisible to the computer terminal.