Method, System and Apparatus for Protection of Multi-Die Structures

    公开(公告)号:US20220029838A1

    公开(公告)日:2022-01-27

    申请号:US17481771

    申请日:2021-09-22

    Abstract: The disclosure generally provides methods, systems and apparatus to construct a Physically Unclonable Function (PUF) value for an electronic package based on the package's internal components and their interconnects. In one embodiment, the package is a System-On-Chip (SOC) having a plurality of dielets and a plurality of interconnect connecting the dielets. Each of the dielets and each of the interconnects (at one or more locations) may define an entropy source. each entropy source may have an entropy value. Each entropy source communicates an initial entropy value to a PUF aggregator. The PUF aggregator receives and/or aggregates the various entropies from the various entropy sources to construct the native SOC PUF value. The native SOC PUF value defines the authentic PUF value of the SOC at SOC release. Any deviation from the native SOC PUF value may be deemed a security breach of the SOC.

    MICRO-ARCHITECTURAL FAULT DETECTORS

    公开(公告)号:US20220100629A1

    公开(公告)日:2022-03-31

    申请号:US17033272

    申请日:2020-09-25

    Abstract: Micro-architectural fault detectors are described. An example of storage mediums includes instructions for receiving one or more micro instructions for scheduling in a processor, the processor including one or more processing resources; and performing fault detection in performance of the one or more micro instructions utilizing one or more of a first idle canary detection mode, wherein the first mode includes assigning at least one component as an idle canary detector to perform a canary process with an expected outcome, and a second micro-architectural redundancy execution mode, wherein the second mode includes replicating a first micro instruction to generate micro instructions for performance by a set of processing resources.

    PROTECTION OF AUTHENTICATION TAG COMPUTATION AGAINST POWER AND ELECTROMAGNETIC SIDE-CHANNEL ATTACKS

    公开(公告)号:US20220083651A1

    公开(公告)日:2022-03-17

    申请号:US17024107

    申请日:2020-09-17

    Abstract: Protection of authentication tag computation against power and electromagnetic side-channel attacks is described. An example of one or more storage mediums includes instructions for performing a process for calculation of an authentication tag for a data encryption operation, including generating one or more random values; receiving multiple data blocks for calculation, and performing calculation utilizing the received data blocks and the one or more random values to generate intermediate values; performing a data accumulation operation to accumulate random values in calculation of the data blocks; and calculating the authentication tag based at least in part on the generated intermediate values and the accumulated random values.

    MITIGATING ATTACKS ON KERNEL ADDRESS SPACE LAYOUT RANDOMIZATION

    公开(公告)号:US20190004972A1

    公开(公告)日:2019-01-03

    申请号:US15637524

    申请日:2017-06-29

    Abstract: Various systems and methods for detecting and preventing side-channel attacks, including attacks aimed at discovering the location of KASLR-randomized privileged code sections in virtual memory address space, are described. In an example, a computing system includes electronic operations for detecting unauthorized attempts to access kernel virtual memory pages via trap entry detection, with operations including: generating a trap page with a physical memory address; assigning a phantom page at an open location in the privileged portion of the virtual memory address space; generating a plurality of phantom page table entries corresponding to an otherwise-unmapped privileged virtual memory region; placing the trap page in physical memory and placing the phantom page table entry in a page table map; and detecting an access to the trap page via the phantom page table entry, to trigger a response to a potential attack.

    PROTECTION OF AUTHENTICATION TAG COMPUTATION AGAINST POWER AND ELECTROMAGNETIC SIDE-CHANNEL ATTACKS

    公开(公告)号:US20230185905A1

    公开(公告)日:2023-06-15

    申请号:US18066913

    申请日:2022-12-15

    CPC classification number: G06F21/55 G06F2221/034

    Abstract: Protection of authentication tag computation against power and electromagnetic side-channel attacks is described. An example of one or more storage mediums includes instructions for performing a process for calculation of an authentication tag for a data encryption operation, including generating one or more random values; receiving multiple data blocks for calculation, and performing calculation utilizing the received data blocks and the one or more random values to generate intermediate values; performing a data accumulation operation to accumulate random values in calculation of the data blocks; and calculating the authentication tag based at least in part on the generated intermediate values and the accumulated random values.

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