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    Electronic Chip Architecture
    13.
    发明申请
    Electronic Chip Architecture 审中-公开

    公开(公告)号：US20180253633A1

    公开(公告)日：2018-09-06

    申请号：US15801517

    申请日：2017-11-02

    Applicant: STMicroelectronics (Rousset) SAS

    Inventor： Alexandre Sarafianos ,  Thomas Ordas

    IPC: G06K19/073 ,  H03K3/42 ,  G05B19/042 ,  H01L21/56

    Abstract: In some embodiments, an electronic chip includes a doped semiconductor substrate of a first conductivity type, and wells of the second conductivity type on the side of the front face of the chip, in and on which wells circuit elements are formed. One or more slabs of a second conductivity type are buried under the wells and are separated from the wells. The electronic chip also includes, for each buried slab, a biasable section of the second conductivity type, which extends from the front face of the substrate to the buried slab. A first MOS transistor with a channel of the first conductivity type is disposed in the upper portion of each section, where the first transistor is an element of a flip-flop. A circuit is used for detecting a change in the logic level of one of the flip-flops.

    Method and circuit for implementing a substitution table
    15.
    发明授权
    Method and circuit for implementing a substitution table 有权

    公开(公告)号：US11258579B2

    公开(公告)日：2022-02-22

    申请号：US16281887

    申请日：2019-02-21

    Applicant: STMICROELECTRONICS (ROUSSET) SAS

    Inventor： Daniele Fronte ,  Yanis Linge ,  Thomas Ordas

    IPC: H04L9/06 ,  H04L9/00 ,  G06F21/72 ,  G09C1/00

    Abstract: A cryptographic circuit performs a substitution operation of a cryptographic algorithm based on a scrambled substitution table. For each set of one or more substitution operations of the cryptographic algorithm, the circuit performs a series of sets of one or more substitution operations of which: one is a real set of one or more substitution operations defined by the cryptographic algorithm, the real set of one or more substitution operations being based on input data modified by a real scrambling key; and one or more others are dummy sets of one or more substitution operations, each dummy set of one or more dummy substitution operations being based on input data modified by a different false scrambling key.

    Method for Randomly Modifying the Consumption Profile of a Logic Circuit, and Associated Device
    16.
    发明申请
    Method for Randomly Modifying the Consumption Profile of a Logic Circuit, and Associated Device 审中-公开

    公开(公告)号：US20190147771A1

    公开(公告)日：2019-05-16

    申请号：US16186820

    申请日：2018-11-12

    Applicant: STMicroelectronics (Rousset) SAS

    Inventor： Alexandre Sarafianos ,  Thomas Ordas ,  Yanis Linge

    IPC: G09C1/00 ,  H03K19/003

    Abstract: In an embodiment, a circuit includes a supply terminal, a reference terminal, a logic circuit coupled between the supply terminal and the reference terminal, and an auxiliary circuit coupled to the logic circuit. The auxiliary circuit includes a plurality of switches configured to be controlled to produce random criterions. Each random criterion causes, on each transition of an output signal of the logic, an attenuation of a current flowing between a supply terminal of the circuit and a reference terminal of the circuit; or an increase of the current flowing between the supply terminal of the circuit and the reference terminal of the circuit; or an additional current flowing through the logic circuit on a current path not passing through the supply terminal; or no change in the current flowing between the supply terminal of the circuit and the reference terminal of the circuit.

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