Method and device for protecting codes of embedded software by hardware encryption module

Abstract

The invention discloses a technique for protecting codes of embedded software by a hardware encryption module. The main function of the technique includes that a code space is encrypted according to needs of users in different hierarchies to enable the code space to be separated from other levels to enter an encryption state. Each user is managed in a hierarchy manner by the technique, the users in each hierarchy provide user interfaces to lower-level users, rest codes can be placed in a protected range, the lower-level users must perform related configuration according to the interfaces provided by upper-level users, and a principal layer is prohibited to directly read and modify code spaces of other hierarchies. The technique can effectively protect key data information of manufacturers, and the key data information can be prevented from being read and modified by other manufacturers.

Description

technical field [0001] The invention relates to a technology for realizing embedded software code protection by using a hardware module, which mainly encrypts and protects the code and data information to be protected to make it transparent to the outside world, so as to prevent key technologies and information from leaking. Background technique [0002] With the continuous development of embedded system software, the development of a complete system software is usually not completely carried out by one manufacturer, and usually involves the participation of many manufacturers from upstream to downstream. Therefore, the cooperation between upstream and downstream has become particularly important. Therefore, the manufacturers closest to the product users will use some technical materials and related documents provided by the front-end manufacturers when developing products, and some of the information in these materials is related to the product. Key data and technical infor...

AI Technical Summary

Problems solved by technology

Therefore, the cooperation between upstream and downstream has become particularly important. Therefore, the manufacturers closest to the product users will use some technical materials and related documents provided by the front-end manufacturers when developing products, and some of the information in these materials is related to the product. Key data and technical information in the development process, so there will be a great technical security risk when provided to customers

The traditional way is to provide customers with library files, and at the same time provide documentation to explain the specific information of the interface functions in the library. In this way, the preparation work in the early stage will be very cumbersome

Images