Abstract:
A method for processing content stored on a component is disclosed. A first partition of a first memory is encrypted with a first encryption key and a second partition of the first memory is encrypted with a second encryption key. The second encryption key is different from the first encryption key. The first encryption key is stored in a storage register of the component and the second encryption key is stored in a first location of a non-volatile memory. A memory address of the first location is stored in the first partition of the first memory.
Abstract:
A method of authenticating a slave device. The method includes initializing, by a host device, a charge retention circuit of the slave device, and receiving, by the host device, an indication of a discharge time of the charge retention circuit. The host device authenticates the slave device based on the received indication of the discharge time of the charge retention device.
Abstract:
An integrated circuit includes functional circuitry such as a processing core, memory interfaces, cryptographic circuitry, etc. The integrated circuit also includes protection circuitry to protect the functional circuitry of the integrated circuit against attacks by hidden channels. The protection circuitry, for each of a series of successive periods of time, selects a configuration of the functional circuitry from a set of configurations of the functional circuitry, sets a duration of the period of time, and applies the selected configuration of the functional circuitry for the set duration of the period of time.
Abstract:
A method of authenticating a slave device. The method includes initializing, by a host device, a charge retention circuit of the slave device, and receiving, by the host device, an indication of a discharge time of the charge retention circuit. The host device authenticates the slave device based on the received indication of the discharge time of the charge retention device.
Abstract:
An integrated circuit includes a number of components disposed at a surface of a semiconductor body and an interconnect region connecting the components into a functional circuit. A metallic shield is also produced in the interconnect region. A configurable stage is configurable to operate in a receiving antenna configuration or in a detection configuration during which the integrated circuit is configured to detect a presence of an external electromagnetic radiation representative of an attack by injection of faults
Abstract:
A device for detecting a laser attack made on an integrated circuit chip comprises a bipolar transistor of a first type formed in a semiconductor substrate, that bipolar transistor comprising a parasitic bipolar transistor of a second type. A buried region, forming the base of the parasitic bipolar transistor, operates as a detector of the variations in current flowing caused by impingement of laser light on the substrate.
Abstract:
The disclosure concerns a method implemented by a processing device. The method includes performing a first execution by the processing device of a computing function based on one or more initial parameters stored in a first memory device. The execution of the computing function generates one or more modified values of at least one of the initial parameters, wherein during the first execution the one or more initial parameters are read from the first memory device and the one or more modified values are stored in a second memory device. The method also includes performing a second execution by the processing device of the computing function based on the one or more initial parameters stored in the first memory device.
Abstract:
The disclosure concerns a method implemented by a processing device. The method includes performing a first execution by the processing device of a computing function based on one or more initial parameters stored in a first memory device. The execution of the computing function generates one or more modified values of at least one of the initial parameters, wherein during the first execution the one or more initial parameters are read from the first memory device and the one or more modified values are stored in a second memory device. The method also includes performing a second execution by the processing device of the computing function based on the one or more initial parameters stored in the first memory device.
Abstract:
A device for detecting a laser attack made on an integrated circuit chip comprises a bipolar transistor of a first type formed in a semiconductor substrate, that bipolar transistor comprising a parasitic bipolar transistor of a second type. A buried region, forming the base of the parasitic bipolar transistor, operates as a detector of the variations in current flowing caused by impingement of laser light on the substrate.
Abstract:
A device for detecting a laser attack in an integrated circuit chip formed in the upper P-type portion of a semiconductor substrate incorporating an NPN bipolar transistor having an N-type buried layer, including a detector of the variations of the current flowing between the base of said NPN bipolar transistor and the substrate.