COUNTERMEASURE AGAINST FAULT INJECTION ATTACKS

    公开(公告)号:US20250028831A1

    公开(公告)日:2025-01-23

    申请号:US18882164

    申请日:2024-09-11

    Abstract: A method includes programming first and second values and a first compare enable command into respective first operand, second operand, and first compare enable command registers in a hardware comparator circuit. The method includes determining that a first match exists corresponding to the first and second values, programming a third value into the first operand register and a fourth value into the second operand register, and programming a second compare enable command into a second compare enable command register in the hardware comparator circuit. In response to a determination that a second match exists corresponding to the third and fourth values, the method includes asserting a success interrupt signal, programming a fifth value into the first operand register and a sixth value into the second operand register and programming a second compare enable command into a second compare enable command register in the hardware comparator circuit.

    COUNTERMEASURE AGAINST FAULT INJECTION ATTACKS

    公开(公告)号:US20230214490A1

    公开(公告)日:2023-07-06

    申请号:US17853612

    申请日:2022-06-29

    CPC classification number: G06F21/566 G06F21/52 G06F2221/034

    Abstract: A method includes programming first and second values and a first compare enable command into respective first operand, second operand, and first compare enable command registers in a hardware comparator circuit. The method includes determining that a first match exists corresponding to the first and second values, programming a third value into the first operand register and a fourth value into the second operand register, and programming a second compare enable command into a second compare enable command register in the hardware comparator circuit. In response to a determination that a second match exists corresponding to the third and fourth values, the method includes asserting a success interrupt signal, programming a fifth value into the first operand register and a sixth value into the second operand register and programming a second compare enable command into a second compare enable command register in the hardware comparator circuit.

    EXTERNAL MEMORY DATA INTEGRITY VALIDATION
    4.
    发明公开

    公开(公告)号:US20230152980A1

    公开(公告)日:2023-05-18

    申请号:US17527865

    申请日:2021-11-16

    CPC classification number: G06F3/0619 G06F3/0655

    Abstract: In some examples, a method includes determining, during a boot sequence of a controller, a hash value for data of a block of a flash storage device, the block including executable code, determining a bit pattern based on a randomly generated number, extracting a subset of data bits of the hash value according to the bit pattern to obtain a snippet, and storing the snippet to a secure storage device.

    EXTERNAL MEMORY DATA INTEGRITY VALIDATION

    公开(公告)号:US20250117141A1

    公开(公告)日:2025-04-10

    申请号:US18989032

    申请日:2024-12-20

    Abstract: In some examples, a method includes determining, during a boot sequence of a controller, a hash value for data of a block of a flash storage device, the block including executable code, determining a bit pattern based on a randomly generated number, extracting a subset of data bits of the hash value according to the bit pattern to obtain a snippet, and storing the snippet to a secure storage device.

    EXTERNAL MEMORY DATA INTEGRITY VALIDATION
    8.
    发明公开

    公开(公告)号:US20240086081A1

    公开(公告)日:2024-03-14

    申请号:US18514547

    申请日:2023-11-20

    CPC classification number: G06F3/0619 G06F3/0655

    Abstract: In some examples, a method includes determining, during a boot sequence of a controller, a hash value for data of a block of a flash storage device, the block including executable code, determining a bit pattern based on a randomly generated number, extracting a subset of data bits of the hash value according to the bit pattern to obtain a snippet, and storing the snippet to a secure storage device.

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