SECURE REMOTE PERIPHERAL ENCRYPTION TUNNEL

A Secure Remote Peripheral Encryption Tunnel (SeRPEnT) can be implemented in a portable embedded device for the Universal Serial Bus (USB) with a much more restricted attack surface than a general purpose client computer. The SeRPEnT device can comprise a small, low-power “cryptographic switchboard” that can operate in a trusted path mode and a pass-through mode. In the trusted path mode, the SeRPEnT device can tunnel connected peripherals through the client to a server with Virtual Machine (VM)-hosted applications. In the pass-through mode, the SeRPEnT device can pass-through the connected peripherals to the client system, allowing normal use of the local system by the user. SeRPEnT can also enable secure transactions between the user and server applications by only allowing input to the VMs to originate from the SeRPEnT device.