DEVICE OBFUSCATION IN ELECTRONIC NETWORKS
    21.
    发明申请

    公开(公告)号:US20190159035A1

    公开(公告)日:2019-05-23

    申请号:US16191024

    申请日:2018-11-14

    Applicant: Arm IP Limited

    Abstract: A method, electronic apparatus and computer program for device obfuscation in electronic networks, comprising determining at least one device type of at least one physical device operable to be at least intermittently attached to a wireless network; generating a pattern of wireless network activity associated with the at least one device type; exposing over the wireless network a plurality of non-functional messages conforming to the pattern; and operating a purported sender and receiver of each of the plurality of messages to obscure at least one of an exploitable characteristic and an exploitable state of the at least one device type with respect to the wireless network.

    PROCESSING DIGITAL CONTENT
    23.
    发明申请

    公开(公告)号:US20180246714A1

    公开(公告)日:2018-08-30

    申请号:US15756129

    申请日:2016-08-23

    Applicant: Arm IP Limited

    CPC classification number: G06F8/66 G06F9/466

    Abstract: A machine-implemented method or data processing component for controlling the processing of digital content from plural sources by at least one data processing device comprises receiving at least two digital content manifests at the data processing device; receiving at least one digital content payload at the data processing device; and responsive to the at least two digital content manifests, performing an atomic action using the at least one digital content payload.

    DETECTING UNDESIRED ENERGY CONSUMPTION IN ELECTRONIC DEVICES

    公开(公告)号:US20170108913A1

    公开(公告)日:2017-04-20

    申请号:US15292333

    申请日:2016-10-13

    Applicant: ARM IP Limited

    CPC classification number: G06F1/3234 G06F1/3206 G06F9/44505 Y02D10/43

    Abstract: A method for detecting and responding to a configuration setting capable of causing undesired energy consumption in a configurable electronic device comprises measuring a power state of at least one connection point of the configurable electronic device to establish a measured power state value; comparing the measured power state value with a stored power state value for the connection point; and responsive to a discrepancy between the measured power state value and the stored power state value for the connection point where the discrepancy is capable of causing undesired energy consumption, emitting a condition signal.

    Management of control parameters in electronic systems

    公开(公告)号:US11188378B2

    公开(公告)日:2021-11-30

    申请号:US16801790

    申请日:2020-02-26

    Applicant: ARM IP Limited

    Abstract: The machine implemented method for operating at least one electronic system comprises detecting a pattern of use of plural control parameters in a path through a graph of operational context switches to reach a target operational context; storing a representation of the pattern in association with an indicator identifying the target operational context; responsive to detecting at least one of a request for a switch of operation from a source operational context to the target operational context, a trapping on a resource access, and a detection of a breakpoint, retrieving the representation in accordance with the indicator identifying the target operational context; and responsive to the retrieving, applying at least one control parameter to said at least one electronic system to match the pattern.

    Method and device for updating software executed from non-volatile memory

    公开(公告)号:US11150891B2

    公开(公告)日:2021-10-19

    申请号:US16704048

    申请日:2019-12-05

    Applicant: ARM IP LIMITED

    Abstract: A data processing device has a processor which executes software directly from non-volatile memory. The processor has a runtime component which dynamically maps software element identifiers specified by the software to corresponding software elements in memory. Mapping information is used to determine which software elements identifiers correspond to which software elements. This provides a level of indirection which can be used to make software updates more efficient, by updating only parts of the software while leaving old parts of the software as they are. Updated software elements can be stored to memory and the mapping information updated to point to the new elements, while existing mappings may be retained.

    Time-limited access to configuration settings

    公开(公告)号:US11108779B2

    公开(公告)日:2021-08-31

    申请号:US15433297

    申请日:2017-02-15

    Applicant: ARM IP Limited

    Inventor: Milosch Meriac

    Abstract: Broadly speaking, embodiments of the present techniques provide methods and apparatus to implement a time-limited configuration settings hierarchy. The time-limited configuration settings hierarchy introduces a temporary override setting that allows a fail-back to a prior setting after the expiry of a time period. This allows temporary users of IoT devices to have much higher levels of privilege over configuration settings, as an automatic revocation of the permission and reversion to the previous settings is guaranteed on the expiry of the specified time period.

    Access control and code scheduling
    30.
    发明授权

    公开(公告)号:US10891146B2

    公开(公告)日:2021-01-12

    申请号:US15304302

    申请日:2015-04-20

    Applicant: ARM IP LIMITED

    Abstract: A data processing system operates in a plurality of modes including a first privilege mode and a second privilege mode with the first privilege mode giving rights of access that are not available in the second privilege mode. Application code executes in the second privilege mode and generates function calls to hypervisor code which executes in the first privilege mode. These function calls are to perform a secure function requiring the rights of access which are only available in the first privilege mode. Scheduling code which executes in the second privilege mode controls scheduling of both the application code and the hypervisor code. Memory protection circuitry operating with physical addresses serves to control access permissions required to access different regions within the memory address space using configuration data which is written by the hypervisor code. The hypervisor code temporarily grants access to different regions within the physical memory address space to the system in the second privilege mode as needed to support the execution of code scheduled by the scheduling code.

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