Electronic device and a computer program product
    1.
    发明授权
    Electronic device and a computer program product 有权
    电子设备和计算机程序产品

    公开(公告)号:US09510200B2

    公开(公告)日:2016-11-29

    申请号:US14233185

    申请日:2011-08-09

    摘要: An electronic device comprises a secured module arranged to store secured data. A component outside the secured module has a normal operating mode with a normal mode operating voltage. An interface is arranged to provide access to the secured module. A voltage monitoring unit is connected to the component and arranged to monitor an operating voltage Vsup of the component. An interface control unit is connected to the voltage monitoring unit and the interface. The interface control unit is arranged to inhibit access to the secured module through the interface when the operating voltage is below a predetermined secure access voltage level, the secure access voltage being higher than the normal mode operating voltage.

    摘要翻译: 电子设备包括被安排为存储安全数据的安全模块。 安全模块外部的组件具有正常工作模式,具有正常模式工作电压。 布置了一个接口来提供对安全模块的访问。 电压监视单元连接到部件并且被布置成监视部件的工作电压Vsup。 接口控制单元连接到电压监视单元和接口。 接口控制单元被布置成当工作电压低于预定安全存取电压电平时,通过接口禁止对安全模块的访问,安全访问电压高于正常模式工作电压。

    ELECTRONIC DEVICE AND A COMPUTER PROGRAM PRODUCT
    2.
    发明申请
    ELECTRONIC DEVICE AND A COMPUTER PROGRAM PRODUCT 有权
    电子设备和计算机程序产品

    公开(公告)号:US20140155027A1

    公开(公告)日:2014-06-05

    申请号:US14233185

    申请日:2011-08-09

    IPC分类号: H04W12/08

    摘要: An electronic device comprises a secured module arranged to store secured data. A component outside the secured module has a normal operating mode with a normal mode operating voltage. An interface is arranged to provide access to the secured module. A voltage monitoring unit is connected to the component and arranged to monitor an operating voltage Vsup of the component. An interface control unit is connected to the voltage monitoring unit and the interface. The interface control unit is arranged to inhibit access to the secured module through the interface when the operating voltage is below a predetermined secure access voltage level, the secure access voltage being higher than the normal mode operating voltage.

    摘要翻译: 电子设备包括被安排为存储安全数据的安全模块。 安全模块外部的组件具有正常工作模式,具有正常模式工作电压。 布置了一个接口来提供对安全模块的访问。 电压监视单元连接到部件并且被布置成监视部件的工作电压Vsup。 接口控制单元连接到电压监视单元和接口。 接口控制单元被布置成当工作电压低于预定安全存取电压电平时,通过接口禁止对安全模块的访问,安全访问电压高于正常模式工作电压。

    Method and Apparatus for Establishing Trusted Communication With External Real-Time Clock
    3.
    发明申请
    Method and Apparatus for Establishing Trusted Communication With External Real-Time Clock 审中-公开
    用外部实时时钟建立可靠通信的方法和装置

    公开(公告)号:US20120331290A1

    公开(公告)日:2012-12-27

    申请号:US13168486

    申请日:2011-06-24

    IPC分类号: H04L9/32

    CPC分类号: H04L9/3242

    摘要: Embodiments of the present invention provide systems and methods to enable secure communication between a host processor and external real time counter (RTC) logic. In an embodiment, the host processor generates a message including a command to an external device containing the RTC. The external device verifies a Message Authentication Code (MAC) included in the message and responds to the command. Embodiments of the present invention advantageously provide a dedicated power domain for the external RTC logic while guarding against third party attacks on the RTC logic and the communication between the RTC logic and the host processor.

    摘要翻译: 本发明的实施例提供了实现主处理器和外部实时计数器(RTC)逻辑之间的安全通信的系统和方法。 在一个实施例中,主机处理器生成包含命令给包含RTC的外部设备的消息。 外部设备验证消息中包含的消息认证码(MAC),并响应该命令。 本发明的实施例有利地提供用于外部RTC逻辑的专用功率域,同时防止对RTC逻辑的第三方攻击以及RTC逻辑与主机处理器之间的通信。