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    BIOS SECURITY
    2.
    发明申请
    BIOS SECURITY 审中-公开

    公开(公告)号：US20190087582A1

    公开(公告)日：2019-03-21

    申请号：US16083818

    申请日：2016-10-21

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Maugan VILLATEL ,  Boris BALACHEFF ,  David PLAQUIN ,  Vali ALI ,  Jeffrey Kevin JEANSONNE

    IPC: G06F21/57

    Abstract: Examples associated with basic input/output system (BiOS) security are described. One example includes detecting a mismatch between an active BiOS setting and a saved BIOS setting. An update previously applied to the active BiOS setting is validated. The update Is applied to the saved BIOS setting creating an updated BIOS setting. The saved BIOS setting is updated when the updated BIOS setting and the active BIOS setting match. The saved BIOS setting is updated to the active BIOS setting. A security action is taken when the updated BiOS setting and the active BiOS setting differ.

    PROTECTING BASIC INPUT/OUTPUT (BIOS) CODE
    3.
    发明申请
    PROTECTING BASIC INPUT/OUTPUT (BIOS) CODE 审中-公开

    公开(公告)号：US20180321947A1

    公开(公告)日：2018-11-08

    申请号：US15749468

    申请日：2016-01-25

    Applicant: Hewlett-Packard Development Company, L.P

    Inventor： Wei Ze LIU ,  Jeffrey Kevin JEANSONNE ,  Dallas M BARLOW

    IPC: G06F9/4401 ,  G06F21/57

    CPC classification number: G06F9/4401 ,  G06F21/52 ,  G06F21/554 ,  G06F21/572 ,  G06F21/575 ,  G06F2221/2101 ,  G06F2221/2151

    Abstract: A method of protecting basic input/output system (BIOS) code. The method includes, with a relocation information tool executed by a processor, refactoring a number of data sections within a number of handlers of the BIOS code to tag a number of variables within the handlers. The tags indicate which of the variables should be protected at runtime. The method further includes generating a relocation file comprising a number of relocation addresses identifying locations of a number of dynamic variables that change at runtime. The relocation addresses point to a location within the handlers different from an original location. The method further includes, with a loader, loading at runtime the relocation file as part of a BIOS firmware image and adjusting data access to the dynamic variables in handler code to identify the location of the dynamic variables based on the relocation file.

    SYSTEM MANAGEMENT MODE TEST OPERATIONS
    4.
    发明申请
    SYSTEM MANAGEMENT MODE TEST OPERATIONS 审中-公开

    公开(公告)号：US20180226136A1

    公开(公告)日：2018-08-09

    申请号：US15749114

    申请日：2016-01-27

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Jeffrey Kevin JEANSONNE ,  Dallas M. BARLOW ,  Richard A. BRAMLEY, Jr. ,  David PLAQUIN ,  Maugan VILLATEL

    IPC: G11C29/38 ,  G11C29/44

    CPC classification number: G11C29/38 ,  G06F9/4401 ,  G06F9/445 ,  G06F11/2284 ,  G11C29/44

    Abstract: Example implementations relate to system management mode (SMM) test operations. For example, a system for SMM test operations may include a test mode initiation engine to reboot a computing device, and load an interface firmware engine into system management random access memory (SMRAM) associated with the computing device in response to the reboot, wherein the interface firmware engine includes a production interface firmware engine to perform the test operation on a known address space of the page of SMRAM. The system may include a test operation engine to cause the computing system to operate in a testing mode, wherein the testing mode includes operating the computing system in system management mode (SMM), in response to a test command, and perform a test operation on a page of system management random access memory (SMRAM) associated with the computing device when the computing device is operating in SMM.

    CRYPTOGRAPHIC ACCESS TO BIOS
    6.
    发明申请
    CRYPTOGRAPHIC ACCESS TO BIOS 有权

    公开(公告)号：US20210234700A1

    公开(公告)日：2021-07-29

    申请号：US16775871

    申请日：2020-01-29

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Valiuddin ALI ,  Jeffrey Kevin JEANSONNE ,  Giridhar BUSAM ,  Karthick PERIYAKULAM THARAKRAJ ,  Richard Alden BRAMLEY JR.

    IPC: H04L9/32 ,  H04L9/08 ,  H04L29/06

    Abstract: An example computing device includes a memory to store a cryptographic key, a processor coupled to the memory, and a set of instructions stored in the memory. The set of instructions, when executed by the processor, is to capture an encrypted passcode originating from a basic input/output system (BIOS) of a managed device as a challenge to grant local access to the BIOS and authenticate with a server using a user credential. When authentication with the server is successful, the set of instructions is to decrypt the encrypted passcode with the cryptographic key to obtain a decrypted passcode and output the decrypted passcode. When authentication with the server is unsuccessful, the set of instructions is to delete the cryptographic key.

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