Abstract:

This paper abandons the design of memory card and applies combination design of file system and security access mechanism and the design method of modularization to satisfy the market requirement for a smart card. We add binary files and log files into the file structure and perform reliability storage design. We also design and implement the functionalities of application firewall and a multi-purpose card. The design method increases the reliability, applicability and flexibility of a smart card.

Key words: smart card, chip operating system, file management, data access