Method and system for protecting memory information in a platform
    2.
    发明授权
    Method and system for protecting memory information in a platform 有权
    保护平台内存信息的方法和系统

    公开(公告)号:US09092644B2

    公开(公告)日:2015-07-28

    申请号:US13976935

    申请日:2011-12-28

    摘要: A method and system to provide an effective, scalable and yet low-cost solution for Confidentiality, Integrity and Replay protection for sensitive information stored in a memory and prevent an attacker from observing and/or modifying the state of the system. In one embodiment of the invention, the system has strong hardware protection for its memory contents via XTS-tweak mode of encryption where the tweak is derived based on “Global and Local Counters”. This scheme offers to enable die-area efficient Replay protection for any sized memory by allowing multiple counter levels and facilitates using small counter-sizes to derive the “tweak” used in the XTS encryption without sacrificing cryptographic strength.

    摘要翻译: 一种方法和系统,为存储在存储器中的敏感信息提供有效,可扩展且低成本的保密性,完整性和重放保护解决方案,并防止攻击者观察和/或修改系统的状态。 在本发明的一个实施例中,系统通过经由XTS调整加密模式对其存储器内容具有强大的硬件保护,其中基于“全局和本地计数器”导出调整。 该方案提供了通过允许多个计数器级别为任何大小的存储器提供芯片区域高效的重放保护,并有助于使用小型计数器来导出XTS加密中使用的“调​​整”,而不会牺牲加密强度。

    METHOD AND SYSTEM FOR PROTECTING MEMORY INFORMATION IN A PLATFORM
    6.
    发明申请
    METHOD AND SYSTEM FOR PROTECTING MEMORY INFORMATION IN A PLATFORM 有权
    保护平台内存信息的方法和系统

    公开(公告)号:US20140208109A1

    公开(公告)日:2014-07-24

    申请号:US13976935

    申请日:2011-12-28

    IPC分类号: H04L29/06

    摘要: A method and system to provide an effective, scalable and yet low-cost solution for Confidentiality, Integrity and Replay protection for sensitive information stored in a memory and prevent an attacker from observing and/or modifying the state of the system. In one embodiment of the invention, the system has strong hardware protection for its memory contents via XTS-tweak mode of encryption where the tweak is derived based on “Global and Local Counters”. This scheme offers to enable die-area efficient Replay protection for any sized memory by allowing multiple counter levels and facilitates using small counter-sizes to derive the “tweak” used in the XTS encryption without sacrificing cryptographic strength.

    摘要翻译: 一种方法和系统,为存储在存储器中的敏感信息提供有效,可扩展且低成本的保密性,完整性和重放保护解决方案,并防止攻击者观察和/或修改系统的状态。 在本发明的一个实施例中,系统通过经由XTS调整加密模式对其存储器内容具有强大的硬件保护,其中基于“全局和本地计数器”导出调整。 该方案提供了通过允许多个计数器级别为任何大小的存储器提供芯片区域高效的重放保护,并有助于使用小型计数器来导出XTS加密中使用的“调​​整”,而不会牺牲加密强度。