Oberthur Technologies

Idemia France

Idema France

Olivier Chamley

Christophe Giraud

Hugues Thiebeauld De La Crouee

Nicolas Morin

Lorenzo Stranges

Stéphane Jayet

Gregoire Godel

Hugo Greneche

Stéphane Andreau

Grégoire Godel

Hugues Thiebauld De La Crouée

A method of executing a program by a processor, and an electronic entity including such a processor, the method includes the following steps:

Method of executing a program by a processor and electronic entity comprising such a processor

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.

Masking and unmasking methods and devices

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.

System and method for updating an operating system for a smart card or other secure element

A method for the performance of a function by a microcircuit, includes: at least one step of determining () 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 () a protection function; when it is determined that the operation of the microcircuit is normal, a step of performing () 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 () of the performance of the decoy function by a timer.

Method and device for the performance of a function by a microcircuit

The invention in particular relates to provide security for intermediate programming code for its execution by a virtual machine. After having received () a plurality of pseudo-instructions of the intermediate programming code, the plurality of bytecode instructions is converted (), the conversion including a step of inserting at least one bytecode instruction relative to a function for execution checking of at least one bytecode instruction of the plurality of bytecode instructions. A following step is directed to generating bytecode, the generated bytecode including the plurality of converted bytecode instructions.

Method, computer program and device for providing security for intermediate programming code for its execution by a virtual machine

The method includes in placing an instruction presence parameter in the 'argument' field of a binary word defining a read/write command generated by generic management programs (drivers) for removable data storage units. This makes it possible to circumvent the limitation of the set of the commands authorized by a generic program for managing a removable data storage unit, without running the risk of data being interpreted wrongly as instructions.

Method of passing instructions between a host station and a portable electronic device, and device for implementation

A smart card () storing a first and a second application () and elements for receiving commands originating from outside the card (), the first application () being capable of executing first commands, the smart card includes elements () for determining () whether a received command is implemented by the first application so as to transmit () the received command to the second application () in the case of a negative determination. Notably, the determination can implement either a table () listing the first commands, or conditional instructions provided within the execution code for the first application. Application of the invention to a second highly-securitized application, of the banking transaction type, and to a first less-securitized application, of the mobile telephone application type.

Smart card, telephone comprising such a card and method for executing a command in such a card

Smartcard, telephone comprising such a card and method for executing a command in such a card

The microprocessor card includes a first microprocessor and a second microprocessor, the first microprocessor including elements for commanding the second microprocessor. In embodiments, the card includes electrical contacts adapted to carry command signals, these electrical contacts being connected exclusively to the first microprocessor. In embodiments, the first microprocessor includes elements for commanding the second microprocessor via commands conforming to the ISO 7816 standard. The first microprocessor uses a lower level of security than the second microprocessor.

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Leognan, France

Olivier Chamley