Smart card and method for safely managing same

Abstract

The invention provides a smart card which comprises an interface module, a controllable storage region, a storage controller and an additional controller, wherein the additional controller establishes catalogue FCP information and file FCP information by using a name as an index according to a command of establishing FCP information, obtains the FCP information according to the name of a file to be processed, and analyzes the FCP information of the file to be processed to obtain a safety condition and a safety algorithm. Whether the safety condition is met is judged according to a permission validation command, when the safety condition is met, data included by the field to be processed is protected by using the safety algorithm to obtain the data subjected to safety protection, and the data subjected to the safety protection is output to the storage controller; and the safety condition is not met, operation is rejected. The invention also provides a method for safely managing the smart card. By adopting the smart card and the method provided by the invention, the safety and the flexibility can be enhanced.

Description

technical field [0001] The invention relates to storage technology, in particular to an intelligent storage card and its safety management method. Background technique [0002] Smart Storage Card (SSC) combines traditional smart card technology and ultra-large-capacity memory technology, uses a variety of communication and computer interfaces, and is loaded in mobile communication terminals, computers, and other digital terminal equipment to provide large-capacity storage. , New wireless value-added applications, multimedia processing, information security, DRM and other intelligent information, multimedia, entertainment and other products. [0003] Since the data in the smart memory card is mostly important data of the user or the issuer, how to realize safe data storage, communication and security of operation instructions in a specific area will be an important problem that the smart memory card must solve. [0004] The invention patent with the publication number CN1015...

AI Technical Summary

Problems solved by technology

Since the device accessing the smart memory card manages the security of the smart memory card, the security is low; and the confidential data area adopts a fixed file structure, and the authority management is based on the sector, which is easier to be intercepted and cracked by physics or software, and there is a high security risks; the security logic in this invention patent is relatively fixed and simple, and cannot be flexibly set, and needs to be further improved

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