公开(公告)号：US20140025940A1

公开(公告)日：2014-01-23

申请号：US13946681

申请日：2013-07-19

Applicant: OBERTHUR TECHNOLOGIES

Inventor： Christophe Giraud ,  Olivier Chamley ,  Gregoire Godel

IPC: G06F21/57

CPC classification number: G06F21/575 ,  G06F21/51 ,  G06F21/57

Abstract: A secure element includes a boot program comprises instructions for the execution a startup step to determine if a non-volatile memory stores an active operating system, and, in the affirmative, to launch execution of the operating system, an authentication step of a updater device, as a function of first authentication data determined by a secure element and second authentication data received from the updater device, and, in response to the authentication step, a storage step of a new operating system received from the update, device in the non-volatile memory and an activation step of the new operating system, when said instructions are executed by a microprocessor.

Abstract translation: 安全元件包括引导程序，其包括用于执行用于确定非易失性存储器是否存储活动操作系统的启动步骤的指令，并且肯定地启动操作系统的执行，更新器件的认证步骤 ，作为由安全元件确定的第一认证数据和从更新器件接收到的第二认证数据的功能，并且响应于认证步骤，从更新中接收到的新操作系统的存储步骤， 当所述指令由微处理器执行时，新的操作系统的易失性存储器和激活步骤。

公开(公告)号：US10242183B2

公开(公告)日：2019-03-26

申请号：US14965203

申请日：2015-12-10

Applicant: OBERTHUR TECHNOLOGIES

Inventor： Olivier Chamley ,  Christophe Giraud

IPC: G06F21/54 ,  G06F21/55 ,  G06F21/62

Abstract: A method of executing a program by a processor, and an electronic entity including such a processor, the method includes the following steps: a calling program calling a subprogram and passing at least one parameter; the subprogram determining a return status indicator; the subprogram determining a return word by using a predetermined function to combine at least the return status indicator and the parameter; returning to the calling program with the determined return word as a result; and the calling program comparing the return word and a determined word determined by using the predetermined function to combine at least one possible value of the return status indicator and the parameter passed when calling the subprogram.

公开(公告)号：US10121392B2

公开(公告)日：2018-11-06

申请号：US15439973

申请日：2017-02-23

Applicant: OBERTHUR TECHNOLOGIES

Inventor： Olivier Chamley ,  Christophe Giraud

IPC: G09C1/00 ,  G06F21/60 ,  G06F21/79 ,  H04L9/06

Abstract: Devices and methods for masking and unmasking sensitive data, based on a standard cryptographic algorithm defining a ciphering algorithm, and a deciphering algorithm using more resources than the ciphering algorithm are described. The masking of sensitive data is done by applying the deciphering algorithm to the sensitive data to obtain masked sensitive data. The unmasking of the masked sensitive data is done by applying the ciphering algorithm to the masked sensitive data to obtain sensitive data in plain form.

公开(公告)号：US09779246B2

公开(公告)日：2017-10-03

申请号：US13946681

申请日：2013-07-19

Applicant: OBERTHUR TECHNOLOGIES

Inventor： Christophe Giraud ,  Olivier Chamley ,  Gregoire Godel

IPC: G06F21/57 ,  G06F21/51

CPC classification number: G06F21/575 ,  G06F21/51 ,  G06F21/57

Abstract: A secure element includes a boot program comprises instructions for the execution a startup step to determine if a non-volatile memory stores an active operating system, and, in the affirmative, to launch execution of the operating system, an authentication step of a updater device, as a function of first authentication data determined by a secure element and second authentication data received from the updater device, and, in response to the authentication step, a storage step of a new operating system received from the update, device in the non-volatile memory and an activation step of the new operating system, when said instructions are executed by a microprocessor.

公开(公告)号：US09483641B2

公开(公告)日：2016-11-01

申请号：US14509144

申请日：2014-10-08

Applicant: OBERTHUR TECHNOLOGIES

Inventor： Olivier Chamley

IPC: H04L29/06 ,  G06F21/55 ,  G06K19/073

CPC classification number: G06F21/554 ,  G06K19/07363 ,  H04L63/1441

Abstract: A method for the performance of a function by a microcircuit, includes:at least one step of determining (205) whether an anomaly is detected or whether the operation of the microcircuit is normal;when it is determined that an anomaly is detected, a step of performing (210) a protection function;when it is determined that the operation of the microcircuit is normal, a step of performing (215) a decoy function simulating the protection function by being perceptible, from the outside of the microcircuit, in a manner more or less identical to the protection function;the method being characterized in that it includes an interruption (250) of the performance of the decoy function by a timer.

Abstract translation: 该方法的特征在于它包括由定时器执行诱饵功能的中断（250）。