Security for active data request streams

Abstract

Securing data exchanged between components such as hardware sub-systems of a computing device (e.g., internal communications) during a request-response cycle is desirable. In some implementations, methods and systems as disclosed to secure computing devices against attackers attempting to take physical control of a computer system (or portion thereof) to compromise the system or steal data managed by the computer system. In one example, data transmission request from sender to a receiver may be identified and associated with a unique identifier to individually identify the data transmission request (e.g., a request internal to the computer system). The request may then be provided to the receiver and a later response may be identified and validated prior to returning the response data to the requestor. The validation may include ensuring an associated tag (e.g., unique identifier) is provided with the response to tie it to the request for which the response is being sent.