公开(公告)号：US09471799B2

公开(公告)日：2016-10-18

申请号：US14492786

申请日：2014-09-22

Applicant: Advanced Micro Devices, Inc.

Inventor： Joshua S. Schiffman ,  David A. Kaplan

IPC: G06F21/62 ,  G06F21/60

CPC classification number: G06F21/62 ,  G06F21/606 ,  G06F21/74 ,  G06F21/83

Abstract: A system and method are disclosed for securely receiving data from an input device coupled to a computing system. The system includes an interface configured to receive data from an input device, a coprocessor, and a host computer, wherein the host computer includes an input handler and a host processor. The host processor is configured to execute code in a normal mode and in a privileged mode. The host processor switches from the normal mode to the secure mode upon data being available from the interface while the host computer is in a secure input mode. The input handler receives the data from the interface and sends the received data to the coprocessor responsive to receiving the data while operating in the secure mode.

Abstract translation: 公开了用于从耦合到计算系统的输入设备安全地接收数据的系统和方法。 该系统包括被配置为从输入设备，协处理器和主计算机接收数据的接口，其中主机包括输入处理器和主机处理器。 主机处理器被配置为以正常模式和特权模式执行代码。 当主机处于安全输入模式时，主机处理器可以从接口获得数据，从正常模式切换到安全模式。 输入处理器接收来自接口的数据，并且响应于在安全模式下操作时接收数据而将接收到的数据发送到协处理器。

公开(公告)号：US20160085976A1

公开(公告)日：2016-03-24

申请号：US14492786

申请日：2014-09-22

Applicant: Advanced Micro Devices, Inc.

Inventor： Joshua S. Schiffman ,  David A. Kaplan

IPC: G06F21/62 ,  G06F21/60

CPC classification number: G06F21/62 ,  G06F21/606 ,  G06F21/74 ,  G06F21/83

Abstract: A system and method are disclosed for securely receiving data from an input device coupled to a computing system. The system includes an interface configured to receive data from an input device, a coprocessor, and a host computer, wherein the host computer includes an input handler and a host processor. The host processor is configured to execute code in a normal mode and in a privileged mode. The host processor switches from the normal mode to the secure mode upon data being available from the interface while the host computer is in a secure input mode. The input handler receives the data from the interface and sends the received data to the coprocessor responsive to receiving the data while operating in the secure mode.

Abstract translation: 公开了用于从耦合到计算系统的输入设备安全地接收数据的系统和方法。 该系统包括被配置为从输入设备，协处理器和主计算机接收数据的接口，其中主机包括输入处理器和主机处理器。 主机处理器被配置为以正常模式和特权模式执行代码。 当主机处于安全输入模式时，主机处理器可以从接口获得数据，从正常模式切换到安全模式。 输入处理器接收来自接口的数据，并且响应于在安全模式下操作时接收数据而将接收到的数据发送到协处理器。