Figure 1: A comprehensive security framework can provide critical security capabilities for embedded devices.
Implementing security within the device
Not only must a security solution for embedded devices ensure the device firmware has not been tampered with, it also needs to secure the data stored by the device, secure the communication between the device and the network, and it protect the device from cyber-attacks. This can only be achieved by including security in the early stages of design.
Unfortunately, there is no one one-size fits all security solution for embedded devices. Security requirements must take into consideration the cost of a security failure (economic, environmental, social, etc.), the risk of attack, available attack vectors, and the cost of implementing a security solution.
Any security framework should provide the security features as shown in table 1 below.