公开(公告)号：JP2003223101A

公开(公告)日：2003-08-08

申请号：JP2002262662

申请日：2002-09-09

Applicant: ST MICROELECTRONICS SA

Inventor： WUIDART LUC ,  BALTHAZAR PIERRE

IPC: G06T1/00 ,  G09C5/00 ,  H04L9/08 ,  H04L9/32 ,  H04N1/32 ,  H04N1/387 ,  H04N7/08 ,  H04N7/081

Abstract: PROBLEM TO BE SOLVED: To provide a method for transmitting multimedia data by using watermarking key for confirming a transmission source and preventing data from being falsified during the transmission. SOLUTION: The method for transmitting secure digital data between a sender and a receiver is provided with a step for authenticating the receiver by a symmetrical authentication key sharing algorithm with no transmission of the key, a step for watermarking the data by using the authentication key as the watermarking key and a step for transmitting the watermarked data. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003243525A

公开(公告)日：2003-08-29

申请号：JP2002257486

申请日：2002-09-03

Applicant: ST MICROELECTRONICS SA

Inventor： WUIDART SYLVIE ,  WUIDART LUC ,  BARDOUILLET MICHEL ,  BALTHAZAR PIERRE

IPC: G01K7/00 ,  G06F12/14 ,  G06F13/42 ,  G06F21/06 ,  G06K19/073 ,  H01L21/822 ,  H01L27/04

Abstract: PROBLEM TO BE SOLVED: To provide a method and a circuit for detecting the variation of at least one environmental parameter of an integrated circuit. SOLUTION: A propagation delay of an edge in a delay element sensitive to the variation of the environmental parameter is measured to compare a present or a measured delay with at least one reference value. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003177971A

公开(公告)日：2003-06-27

申请号：JP2002262663

申请日：2002-09-09

Applicant: ST MICROELECTRONICS SA

Inventor： WUIDART LUC ,  BALTHAZAR PIERRE

IPC: G06F12/14 ,  G06F21/24 ,  G06K19/073 ,  G11B20/00

Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for storing and reading digital data on/from a physical medium. SOLUTION: The method and the device to secure storage of digital data on a physical medium equipped with a calculation means by a recorder include, upon first use of the medium in a write mode, a step of memorizing at least one identifier of a reader of the medium in the medium or its calculation means in a non-volatile manner and a step of storing the data in an encrypted manner by an encryption key to be permanently included in the medium or its calculation means. The method and the device are for reading such encrypted data. COPYRIGHT: (C)2003,JPO

公开(公告)号：DE60236050D1

公开(公告)日：2010-06-02

申请号：DE60236050

申请日：2002-06-11

Applicant: ST MICROELECTRONICS SA

Inventor： ORLANDO WILLIAM ,  WUIDART LUC ,  BARDOUILLET MICHEL ,  BALTHAZAR PIERRE

IPC: G06F12/14 ,  G06F21/12 ,  G06F21/79 ,  H01L23/544 ,  H01L23/58 ,  H04L9/10 ,  H04L9/32

Abstract: The secret datum containing address of a program is combined to the physical datum of physical parameter network of an integrated circuit (10), and the combination result is stored. Independent claims are included for the following: (1) datum reading method; (2) datum protection method; and (3) integrated circuit.

公开(公告)号：FR2829645A1

公开(公告)日：2003-03-14

申请号：FR0111678

申请日：2001-09-10

Applicant: ST MICROELECTRONICS SA

Inventor： WUIDART LUC ,  BALTHAZAR PIERRE

IPC: H04L9/32 ,  G07F7/10 ,  H04L9/30 ,  G06K19/07

Abstract: Method for delivery of a secret quantity or key (s) to an integrated circuit forming part of an external device or reader used in an authentication process. The secret quantity is a function of a signature of at least one memory (4, 10, 11, 12) associated with an integrated circuit, for verification of the integrity of the memory. A signature comprises a binary word representative of the contents of one or more integrated circuit memories. The invention also relates to a corresponding authentication method and integrated circuit.

公开(公告)号：FR2829603A1

公开(公告)日：2003-03-14

申请号：FR0111718

申请日：2001-09-11

Applicant: ST MICROELECTRONICS SA

Inventor： WUIDART LUC ,  BALTHAZAR PIERRE

IPC: G06F12/14 ,  G06F21/24 ,  G06K19/073 ,  G11B20/00 ,  G06K19/10 ,  H04L9/32

公开(公告)号：DE60223703T2

公开(公告)日：2008-10-30

申请号：DE60223703

申请日：2002-09-10

Applicant: ST MICROELECTRONICS SA

Inventor： WUIDART LUC ,  BALTHAZAR PIERRE

IPC: G07F7/12 ,  H04L9/32 ,  G07F7/10

Abstract: The invention relates to a method of supplying a private quantity (s) in an integrated circuit involved in an authentication procedure by means of an external device that takes said private quantity into account. In order to verify the integrity of said memory element, the private quantity is a function of a signature (SIGN) of at least one memory element (4, 10, 11, 12) associated with the integrated circuit.

公开(公告)号：FR2829644A1

公开(公告)日：2003-03-14

申请号：FR0111676

申请日：2001-09-10

Applicant: ST MICROELECTRONICS SA

Inventor： WUIDART LUC ,  BALTHAZAR PIERRE

IPC: G06T1/00 ,  G09C5/00 ,  H04L9/08 ,  H04L9/32 ,  H04N1/32 ,  H04N1/387 ,  H04N7/08 ,  H04N7/081 ,  H04L9/30 ,  H04N7/24

Abstract: The secure transmission of digital words between a transmitter and receiver has an authentication phase using a symmetrical algorithm with an authentication key before transmission. There is a phase of watermarking the digital words with the authentication key, and a phase of transmission of the watermarked words.

公开(公告)号：FR2829265A1

公开(公告)日：2003-03-07

申请号：FR0111435

申请日：2001-09-04

Applicant: ST MICROELECTRONICS SA

Inventor： WUIDART SYLVIE ,  WUIDART LUC ,  BARDOUILLET MICHEL ,  BALTHAZAR PIERRE

IPC: G06F12/14 ,  G01K7/00 ,  G06F13/42 ,  G06F21/06 ,  G06K19/073 ,  H01L21/822 ,  H01L27/04

Abstract: Method for detection of variations of an evironmental parameter (V,T) in an integrated circuit (1): (a) evaluate a propagation delay for retarding parts (21) sensitive to variations parameters environment, and; compare the delay current with respect to a reference value (REF). The measured delay current is compared to two predetermined minimum and maximum levels or a unique reference value defining a authorized operating range for the integrated circuit. The value from programmable retarder is determined as a function of the difference between the current value and reference value. The range of possible variation being predetermined.

公开(公告)号：DE60223703D1

公开(公告)日：2008-01-03

申请号：DE60223703

申请日：2002-09-10

Applicant: ST MICROELECTRONICS SA

Inventor： WUIDART LUC ,  BALTHAZAR PIERRE

IPC: G07F7/12 ,  H04L9/32 ,  G07F7/10

Abstract: The invention relates to a method of supplying a private quantity (s) in an integrated circuit involved in an authentication procedure by means of an external device that takes said private quantity into account. In order to verify the integrity of said memory element, the private quantity is a function of a signature (SIGN) of at least one memory element (4, 10, 11, 12) associated with the integrated circuit.