Technologies for secure input and display of virtual touch user interfaces
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United States of America Patent
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Nov 29, 2016
Issued Date -
N/A
app pub date -
Dec 4, 2014
filing date -
Oct 20, 2014
priority date (Note) -
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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.
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