Providing secure data transmission over a universal serial bus (USB) interface

摘要

An example includes a computing device including a controller configured to communicably couple the computing device to a peripheral computing device. The controller includes an encryption unit configured to encrypt input data received from the peripheral computing device before sending the input data to an application running on the computing device, and a decryption unit configured to decrypt output data received from the application before sending the output data to the peripheral computing device. The computing device also includes a memory device including a data structure that directs the flow of the data between the peripheral computing device and the application. The data structure includes an encryption enable field and an encryption key field for controlling the encryption and decryption units of the controller.