Abstract: The supply voltage for a module of an integrated circuit managed to support protection against side channel attacks. Upon startup of the integrated circuit, one action from the following actions is selected in response to a command: supplying the module with the supply voltage having a fixed value that is selected from a plurality of predetermined values, or varying the value of the supply voltage in time with a pulsed signal.

Abstract: An electronic device includes a starting circuit configured to compare a value representative of the power supply voltage with a threshold, wherein the circuit includes a generator of a current proportional to temperature.

Abstract: An electronic device includes a logic circuit and an auxiliary circuit. The logic circuit includes a first terminal coupled to a supply voltage terminal, a second terminal intended coupled to a reference voltage terminal and an output terminal configured to deliver a signal in a high state or a low state. The auxiliary circuit is coupled between the first terminal and the second terminal and is configured to randomly generate or not generate an additional current between the first terminal and the second terminal on each change of state of the signal on the output terminal.

Abstract: A circuit for detecting a glitch in power supply includes a detection circuit to detect the glitch in a DC supply voltage of the power supply when a magnitude in the glitch in a DC supply voltage of the power supply exceeds a detection threshold, wherein the detection threshold is a function of the DC supply voltage, and wherein the detection circuit comprises a low pass filter, a control circuit coupled to the low pass filter, and a current mirror circuit coupled to the control circuit having an output for providing a logic signal indicative of a detected glitch.

Abstract: A secure electronic chip including a plurality of biased semiconductor wells and a well biasing current detection circuit. Each of the wells includes a transistor and a bias contact electrically isolated from the transistor. The detection circuit is electrically coupled to each bias contact and is configured to detect a bias current passing through the bias contact that is indicative of an attempt to tamper with the electronic chip.

Abstract: An electronic chip including a plurality of buried doped bars and a circuit for detecting an anomaly of an electric characteristic of the bars.

Abstract: A power supply voltage is monitored by a monitoring circuit including a variable current generator and a band gap voltage generator core receiving the variable current and including a first node and a second node. A control circuit connected to the first and second nodes is configured to deliver a control signal on a first output node having a first state when an increasing power supply voltage is below a first threshold and having a second state when increasing power supply voltage exceeds the first threshold. The first threshold is at least equal to the band gap voltage. An equalization circuit also connected to the first and second nodes with feedback to the variable current generator generates the bandgap voltage at a second output node. The control signal operates to control actuation of the equalization circuit.

Abstract: A power supply voltage is monitored by a monitoring circuit including a band gap voltage generator core including a first node and a second node. A control circuit connected to the first and second nodes is configured to deliver a control signal on a first output node having a first state when an increasing power supply voltage is below a first threshold and having a second state when increasing power supply voltage exceeds the first threshold. The first threshold is at least equal to the band gap voltage. An equalization circuit also connected to the first and second nodes with feedback to the band gap voltage generator core generates the bandgap voltage at a second output node. The control signal operates to control actuation of the equalization circuit.

Abstract: The supply voltage for a module of an integrated circuit managed to support protection against side channel attacks. Upon startup of the integrated circuit, one action from the following actions is selected in response to a command: supplying the module with the supply voltage having a fixed value that is selected from a plurality of predetermined values, or varying the value of the supply voltage in time with a pulsed signal.

Abstract: A power supply voltage is monitored by a monitoring circuit including a variable current generator and a band gap voltage generator core receiving the variable current and including a first node and a second node. A control circuit connected to the first and second nodes is configured to deliver a control signal on a first output node having a first state when an increasing power supply voltage is below a first threshold and having a second state when increasing power supply voltage exceeds the first threshold. The first threshold is at least equal to the band gap voltage. An equalization circuit also connected to the first and second nodes with feedback to the variable current generator generates the bandgap voltage at a second output node. The control signal operates to control actuation of the equalization circuit.

Abstract: An electronic device includes a logic circuit and an auxiliary circuit. The logic circuit includes a first terminal coupled to a supply voltage terminal, a second terminal intended coupled to a reference voltage terminal and an output terminal configured to deliver a signal in a high state or a low state. The auxiliary circuit is coupled between the first terminal and the second terminal and is configured to randomly generate or not generate an additional current between the first terminal and the second terminal on each change of state of the signal on the output terminal.

Abstract: A power supply voltage is monitored by a monitoring circuit including a band gap voltage generator core including a first node and a second node. A control circuit connected to the first and second nodes is configured to deliver a control signal on a first output node having a first state when an increasing power supply voltage is below a first threshold and having a second state when increasing power supply voltage exceeds the first threshold. The first threshold is at least equal to the band gap voltage. An equalization circuit also connected to the first and second nodes with feedback to the band gap voltage generator core generates the bandgap voltage at a second output node. The control signal operates to control actuation of the equalization circuit.

Abstract: A DC voltage glitch detection circuit, wherein a detection threshold is a function of this DC voltage.

Abstract: An electronic device randomly modifies a current profile of a logic circuit by using an auxiliary circuit. The logic circuit includes a first terminal coupled to a supply voltage terminal, a second terminal coupled to a reference voltage terminal and an output terminal configured to deliver a signal in a high state or a low state. The auxiliary circuit is coupled between the first terminal and the second terminal and is configured to randomly generate or not generate an additional current between the first terminal and the second terminal on each change of state of the signal on the output terminal.

Abstract: An electronic chip including: a plurality of first semiconductor bars of a first conductivity type and of second semiconductor bars of a second conductivity type arranged alternately and contiguously on a region of the first conductivity type; two detection contacts arranged at the ends of each second bar; a circuit for detecting the resistance between the detection contacts of each second bar; insulating trenches extending in the second bars down to a first depth between circuit elements; and insulating walls extending across the entire width of each second bar down to a second depth greater than the first depth.

Abstract: An electronic chip including a plurality of buried doped bars and a circuit for detecting an anomaly of an electric characteristic of the bars.

Abstract: A method for smoothing current consumed by an electronic device is based on a series of current copying operations and on a current source delivering a reference current. The reference current is delivered in such a manner that current consumed as seen from the power supply depends on the reference current.

Abstract: An electronic device includes a logic circuit and an auxiliary circuit. The logic circuit includes a first terminal coupled to a supply voltage terminal, a second terminal intended coupled to a reference voltage terminal and an output terminal configured to deliver a signal in a high state or a low state. The auxiliary circuit is coupled between the first terminal and the second terminal and is configured to randomly generate or not generate an additional current between the first terminal and the second terminal on each change of state of the signal on the output terminal.

Abstract: The current signature of an electronic function is masked by controlling a current source that supplies power for the electronic function is controlled in a dynamically-varying manner. Excess current is detected and compared to a threshold. If the detected excess current meets the threshold, the operation of the electronic function is modified, for example by controlling a clock.

Abstract: An electronic chip including: a plurality of first semiconductor bars of a first conductivity type and of second semiconductor bars of a second conductivity type arranged alternately and contiguously on a region of the first conductivity type; two detection contacts arranged at the ends of each second bar; a circuit for detecting the resistance between the detection contacts of each second bar; insulating trenches extending in the second bars down to a first depth between circuit elements; and insulating walls extending across the entire width of each second bar down to a second depth greater than the first depth.