| In the process of social informatization,the number of various embedded devices has increased sharply.As a computing chip integrating secure storage,encrypted communication and cryptographic algorithm,cryptographic chip provides security guarantee for the security of embedded system.As an on-chip operating system on cryptographic chip,embedded security platform is the control carrier for the communication between external devices and cryptographic chip,manages on-chip resources and provides services for users,It is of great significance to design and implement a cryptographic chip embedded security platform with good scalability,portability and ease of use.Based on a specific cryptographic chip,this thesis develops an embedded security platform under the guidance of on-chip operating system.From the perspective of the implementation of cryptographic chip embedded security platform,this thesis selects a technical route with good scalability and cross platform portability,carries out technical research,and puts forward a solution of cryptographic chip based embedded security platform.Firstly,this thesis analyzes the research background and significance of the embedded security platform.On this basis,it analyzes and summarizes the technical basis required by the embedded security platform,analyzes the key and difficult points,summarizes the advantages and disadvantages of the development technical route of the embedded security platform,determines the development mode of the platform,defines and defines the function realization of the embedded security platform,and designs the overall architecture of the embedded security platform,This thesis introduces the main work flow of the platform,and focuses on three core modules:file system,security management and Application module.Finally,the embedded security platform is tested and the relevant display results are given.After the test,the function of the password chip embedded security platform is intact and has good practical value.The innovations of this thesis mainly include:In the aspect of data storage of the embedded security platform,a method for storing files in an embedded system is designed and implemented.In the embedded environment,according to the characteristics of the memory,the balanced wear function and power-down protection of the storage are designed.function to prolong the service life of the memory as much as possible and ensure the integrity of the data written in the file;the application uses a bytecode application interpreter to interpret the application execution,and the application adopts a unique bytecode structure,which will not follow the embedded security platform.To re-write the platform code using the scenario,you only need to quickly write the application program according to the bytecode structure,and download the application program to the platform for interpretation and execution,which realizes the rapid iteration of the application and expands the usage scenarios of the embedded security platform. |
