MCU廠商為關(guān)鍵任務(wù)IP提供保護(hù)

　　許多設(shè)計(jì)師仍然認(rèn)為，他們可以使“相當(dāng)好”的IP安全，禁止調(diào)試訪問(wèn)MCU。在開(kāi)發(fā)周期后，調(diào)試路徑（JTAG或社署）被阻止使用用戶(hù)可配置設(shè)置。然而，這種方法對(duì)那些想要逆向設(shè)計(jì)產(chǎn)品的技術(shù)熟練的盜版盜版者來(lái)說(shuō)并沒(méi)有太大的威懾力。

　　簡(jiǎn)單地阻止調(diào)試訪問(wèn)不阻止讀取包含關(guān)鍵軟件IP的位置的設(shè)備內(nèi)存。雖然有幾種方法來(lái)解決這個(gè)問(wèn)題，其中一個(gè)最有效的是隔離關(guān)鍵IP通過(guò)創(chuàng)建內(nèi)部硬件和軟件進(jìn)入壁壘。

　　然而，在描述兩種解決方案之前，值得列舉的是使嵌入式空間變得越來(lái)越危險(xiǎn)的事態(tài)發(fā)展。

　　Appliances such as dishwashers， refrigerators， and home-automation systems are using more and more powerful MCUs to implement advanced diagnostic and convenience features. The software IP that implements these features costs time and money to develop， which means that effective steps are needed to prevent theft by competitors.

　　Protecting product IP is much easier when the appliance or device operates more or less autonomously. The “big data” trend – collecting terabytes of information that can be mined for marketing purposes – has given embedded systems the critical task of originating that data and transporting it over Internet of Things （IoT） connections. This major shift in interconnectedness adds to the imperative for protection.