公开(公告)号：JP2001222430A

公开(公告)日：2001-08-17

申请号：JP2000363469

申请日：2000-11-29

Applicant: ST MICROELECTRONICS SRL

Inventor： ARENA PAOLO ,  BRANCIFORTE MARCO ,  DI BERNARDO GIOVANNI ,  OCCHIPINTI LUIGI

IPC: G06N3/00 ,  B25J9/16 ,  G05B13/02 ,  G06F9/44 ,  G06N7/02 ,  G06N7/04

Abstract: PROBLEM TO BE SOLVED: To realize an electronic circuit having structural and mechanical features capable of controlling the motion of a multi-actuator electromechanical system. SOLUTION: This electronic circuit relates to a new method for controlling the movement of a multi-architecture electromechanical system having the matrix of locally connected analog sells. Each cell expresses the execution configuration of the hardware of the model of a fuzzy inference rule. It is desired that the model generates and controls the typical reaction diffusion mechanism of autonomous waves by using a fuzzy neural network, and is constituted as a fuzzy circuit architecture to be mounted in the form of an integrated circuit using a VLSICMOS technique. In this fuzzy neural network, a functional relation capable of duplexing a simultaneous reaction diffusion equation is defined, and the state variables of plural cells are processed in a language format by duplexing the simultaneous equation, and the kinetics of a vibration type is applied by two sets of fuzzy rules to be imposed on each cell, and the two dynamic processes are provided with different kinematical characteristics simultaneously.

公开(公告)号：JP2000112352A

公开(公告)日：2000-04-21

申请号：JP5845099

申请日：1999-03-05

Applicant: ST MICROELECTRONICS SRL

Inventor： OCCHIPINTI LUIGI ,  DI BERNARDO GIOVANNI ,  DI COLA EUSEBIO ,  CAPONETTO RICCARDO

IPC: G09C1/00 ,  H04L9/00 ,  H04L9/26 ,  H04L9/32

Abstract: PROBLEM TO BE SOLVED: To obtain a method for authentication and electronic signature of an enquiry type and a response type which have an improved security level by making a step generating a chaotic signal included in a step generating authentication and electronic signature signals. SOLUTION: A check terminal 2 checks identification data including a PIN (personal identification number) with respect to a card 1. Thereafter, the terminal 2 generates a signal or initial data X0 via a random value generating circuit 17 and moreover generates development time P. The terminal 2 transmits the initial data X0 and the signal of the development time to both of the card 1 and the chaotic generator of its own. The card 1 transfers the data and the signal to the chaotic generator 23 of its own and moreover calculates an authentication code RES' based on a secret key K' stored in a position 24 to transmit it to the terminal 2. The terminal 2 calculates a comparision code RES by using the secret key K stored in a position 29 to compare the RES with the authentication code RES' of the card 1.

公开(公告)号：DE69832038D1

公开(公告)日：2005-12-01

申请号：DE69832038

申请日：1998-03-06

Applicant: ST MICROELECTRONICS SRL

Inventor： OCCHIPINTI LUIGI ,  DI BERNARDO GIOVANNI ,  DI COLA EUSEBIO ,  CAPONETTO RICCARDO

IPC: G09C1/00 ,  H04L9/00 ,  H04L9/26 ,  H04L9/32 ,  G01N30/00

Abstract: The method for authentication and electronic signature is of the private-key, challenge and response type between a user requesting an authorisation (for a specific transaction, or for access to particular resources), via, for example, a smart card (1) and a controller -check terminal (2)-supplying the authorisation. To increase security of the authorisation or authentication operations, the smart card (1) comprises a chaotic generator (23) generating user's acknowledgement code, which is compared with a comparison code generated by the check terminal (2) using a chaotic generator (30) which is the same.