Practical Embedded Security

CHAPTER 5 Embedded Security

In this chapter, we delve into the embedded realm. In this chapter, we will cover security from an embedded systems developer’s point of view. First and foremost, the primary concept that will be introduced here and reinforced throughout the text is that the embedded systems we are covering are NOT PCs or expensive devices running Windows or Linux (see Figure 1). The personal computer and many expensive embedded devices have virtually infinite resources when compared to low-power, inexpensive, embedded platforms. The problem is that many security solutions rely on this almost limitless supply of memory and clock cycles. Cryptography is expensive, and the flexibility of some protocols (for example, allowing multiple ...