公开(公告)号：US09507951B2

公开(公告)日：2016-11-29

申请号：US14560245

申请日：2014-12-04

Applicant: Intel Corporation

Inventor： Xiaozhu Kang ,  Ghayathri V. Garudapuram ,  Karanvir S. Grewal

IPC: G06F21/60 ,  G06F21/84 ,  G06F21/83

CPC classification number: G06F21/606 ,  G06F21/83 ,  G06F21/84

Abstract: Technologies for secure input and display of a virtual touch user interface include a computing device having a security monitor that may protect memory regions from being accessed by untrusted code. The security monitor may use hardware virtualization features such as extended page tables or directed I/O to protect the memory regions. A protected touch filter driver intercepts requests for touch input and allocates a transfer buffer. The transfer buffer is protected by the security monitor. A touch screen controller may write touch input data into the protected transfer buffer. The touch input data may be shared by the touch filter driver with authorized applications through a protected communication channel. A graphical virtual user interface may be generated by trusted code and rendered into a hardware overlay surface. The user interface may include a virtual keyboard. The security monitor may protect the overlay surface. Other embodiments are described and claimed.

Abstract translation: 用于安全输入和显示虚拟触摸用户界面的技术包括具有可以保护存储器区域不被不可信代码访问的安全监视器的计算设备。 安全监视器可以使用诸如扩展页表或定向I / O之类的硬件虚拟化特征来保护存储器区域。 受保护的触摸滤波器驱动器拦截触摸输入的请求并分配传输缓冲器。 传输缓冲区由安全监视器保护。 触摸屏控制器可将触摸输入数据写入受保护的传送缓冲器。 触摸输入数据可以由具有授权应用的触摸滤波器驱动器通过受保护的通信信道共享。 图形虚拟用户界面可以由可信代码生成并呈现到硬件覆盖表面。 用户界面可以包括虚拟键盘。 安全监视器可以保护覆盖表面。 描述和要求保护其他实施例。