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    Memory module authentication extension
    1.
    发明授权
    Memory module authentication extension 有权

    公开(公告)号：US11899777B2

    公开(公告)日：2024-02-13

    申请号：US18179735

    申请日：2023-03-07

    Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    Inventor： Melvin K. Benedict ,  Eric L. Pope

    IPC: G06F12/00 ,  G06F21/44 ,  G06F13/42 ,  G06F13/16

    CPC classification number: G06F21/44 ,  G06F13/1668 ,  G06F13/4282

    Abstract: Systems and methods are provided for a secondary authentication of a memory module. A nonce key is written to a nonce register of a register array on the memory module, the nonce register being accessible over two different interfaces. In various embodiments, the nonce key may be generated by a management system of the computing platform after performing one or more authentication processes for a memory module over a management interface. Authentication information for use in performing authentication can be stored in an identification component on the memory module. If authentication is successful, the management system can generate the nonce key and write it to the nonce register. Upon receiving a request to access an address, a memory controller can read the nonce register of the memory module at the requested address and compare the nonce key to an identifier included in the request.

    Encrypted memory access using page table attributes
    3.
    发明授权
    Encrypted memory access using page table attributes 有权

    公开(公告)号：US11126565B2

    公开(公告)日：2021-09-21

    申请号：US15193146

    申请日：2016-06-27

    Applicant: Hewlett Packard Enterprise Development LP

    Inventor： Melvin K. Benedict

    IPC: G06F12/14 ,  G11C7/24 ,  G11C29/44

    Abstract: Encrypted memory access using page table attributes is disclosed. One example is a memory system including a memory controller at a memory interface. The memory controller includes an encryptor to control a plurality of memory access keys respectively associated with memory regions, where each memory region is allocated to a respective client, and an access manager to receive an access request from a client, the access request including a client access key to access a memory element. The access manager looks up a memory access key from a page table attribute associated with a physical address of the memory element, and determines if the access request is valid by comparing the client access key with the memory access key associated with the memory region that includes the memory element. Based on the determination and a mode of operation, the access manager provides a response to the access request.

    METHODS AND SYSTEMS FOR TRANSPOSITION CHANNEL ROUTING
    10.
    发明申请
    METHODS AND SYSTEMS FOR TRANSPOSITION CHANNEL ROUTING 有权

    公开(公告)号：US20220139791A1

    公开(公告)日：2022-05-05

    申请号：US17084375

    申请日：2020-10-29

    Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    Inventor： Melvin K. Benedict ,  Karl J. Bois

    IPC: H01L21/66 ,  H01L21/768

    Abstract: Systems and assemblies are provided for transposition channel routing where the characteristics of an escape route can be modified on a printed circuit board (PCB) in a manner that reduces crosstalk and realizes significant signal quality improvement. The techniques involve “transposition” of a signal line pair on the PCB, reduces effect coupling coefficients for individual aggressor signals, thereby reducing the crosstalk. Transposition channel routing techniques can also be applied to other areas on a PCB (e.g., other than escape routes) where space is constrained and other mitigation techniques are not possible. The PCB can include an array of contact pads, a plurality of signal line pairs that include an escape route. One or more transposition junctions disposed within the escape route can route a signal line pair from a first routing channel in the escape route into a second routing channel in the escape route.

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