摘要:
A contactless integrated circuit includes modulation and demodulation circuits configured to connect to an HF antenna circuit to emit and receive HF signals by inductive coupling in a reader mode, modulation and demodulation circuits configured to connect to a UHF antenna to emit and receive UHF signals by electric coupling in a reader mode, a data processing circuit connected to the modulation and demodulation circuits, and configured to provide data to be emitted to the modulation circuits, and to process received signals, transmitted by the demodulation circuits, the demodulation circuits including a common demodulation circuit to equally process signals received by the UHF and HF antennas.
摘要:
A microcontroller system, such as a system-on-a-chip integrated circuit, including a processor (e.g., a Von Neumann processor), memory, and a memory protection unit (MPU), where the MPU provides execute-only access rights for one or more protected areas of the memory. The MPU can allow instructions fetched from within a protected area to access data in the protected area while preventing instructions fetched from outside the protected area from accessing data in the protected area.
摘要:
A device includes a radio transceiver equipped with a UHF antenna, a clock generator associated with the radio transceiver, a processor configured to periodically connect to the radiotelephony network by way of the radio transceiver, and a UHF tag reader configured to conduct a transaction with a UHF tag only outside periods of connection of the processor to the radiotelephony network. The device is particularly directed for use in mobile telephones.
摘要:
A camouflaged shift registers and method for producing same is disclosed. In one embodiment, the camouflaged shift register comprises a plurality of serially coupled flip-flops, each of the flip-flops comprising a logic output communicatively coupled to an input of a serially adjacent next flip-flop and a camouflage element communicatively coupled between the logic output of a first flip-flop of the plurality of flip-flops and the input of a second flip-flop of the plurality of flip-flops serially adjacent to the first flip-flop, wherein the camouflage element has a physical layout mimicking a first function but performs a second function different from the first function.
摘要:
In a general aspect, an integrated circuit can include a network configured to detect fault-injection attacks on the integrated circuit, the network including a plurality of optical sensors. The integrated circuit can also include a surveillance flip-flop coupled with the network, the surveillance flip-flop being configured to signal a fault when one or more optical sensors of the plurality of optical sensors changes state. The integrated circuit can further include at least one inductive winding included in the network, the at least one inductive winding being configured to generate an induced voltage that causes switching of at least one optical sensor of the plurality of optical sensors when the at least one inductive winding is subjected to an electromagnetic flux capable of causing a fault-injection in the integrated circuit.
摘要:
In a general aspect, a portable electronic device can include a digital display including a first electrically conductive plane. The first electrically conductive plane can be configured to neutralize electromagnetic radiation produced by the digital display. The portable electronic device can also include a data transmission device configured to transmit data by intracorporeal current. The data transmission device can include a first electrode that is configured to be capacitively coupled with a body of a user and a second electrode that includes the first electrically conductive plane. The first electrically conductive plane can be electrically coupled with an electrical ground of the data transmission device. The portable electronic device can further include a printed circuit including a second electrically conductive plane. The second electrically conductive plane can be included in the second electrode of the data transmission device.
摘要:
In a general aspect, a method for transmitting data by inductive coupling can include applying, at a rate of a data-carrying signal, a plurality of bursts of a periodic signal to a tuned inductive antenna circuit. The method can further include producing, in the tuned inductive antenna circuit, an antenna signal, the antenna signal generating a magnetic field. The method can further include delimiting an amplitude of each burst of the plurality of bursts of the periodic signal in accordance with an envelope signal, the envelope signal having a rising edge and a falling edge. The delimiting can include shaping the falling edge of the envelope signal using one of a digital shaping circuit and an analog shaping circuit, such that a slope of the falling edge of the envelope signal is flattened as compared to a square envelope signal.
摘要:
A method for executing an application in an NFC device, including steps during which: a contactless link is established between a first and a second NFC devices, the first NFC device transmits through the contactless link an identifier memorized by the first NFC device, the second NFC device transmits through the contactless link an application identifier, the second NFC device transmits to an application server the identifier of the first NFC device and the application identifier, the application server transmits to an authentication server the identifier of the first NFC device and the application identifier, the authentication server verifies the identification data, and if the first NFC device and the application are identified, the authentication server authorizes the two NFC devices to execute the application by transmitting to the application server an identifier of a user of the first NFC device, corresponding to the identifier of the first NFC device.
摘要:
The present invention relates to a contactless communication method between an NFC card with a contact and contactless dual interface, installed in a communication terminal, and an external NFC device, the terminal including an NFC module coupled to the contact interface of the card and including a contactless communication interface, the method including the steps of: selecting one or the other of the contact and contactless interfaces of the card, transmitting signals between the card and the NFC device through the selected interface, and if the contact interface of the card is selected, through the contactless interface of the NFC module, and detecting by the card the presence of the NFC module connected to its contact interface, the selection of one or the other of the contact and contactless interfaces of the card being performed by the card depending on the result of the detection of the NFC module presence.
摘要:
The invention relates to a method of executing a secure application in an NFC device, the method comprising steps during which: a contactless link is established between first and second NFC devices, the first NFC device transmits by the contactless link an identifier of a secure processor of the first NFC device, the second NFC device transmits by the contactless link an application identifier, the secure processor transmits by the contactless link first authentication data allowing the authentication of the secure processor of the first NFC device, the second NFC device transmits to an application server the first authentication data, the application server transmits to an authentication server the first authentication data and second authentication data) to authenticate the application and authorizes the two NFC devices to execute the application only if the secure processor and the application are authenticated.