Time termination high-performance grading data erasing method for synthetic aviation electronic system

An avionics system and data erasing technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc. The superiority of hierarchical security management and other issues to achieve good security and timeliness, balance security and timeliness, and solve high time-consuming effects

Active Publication Date: 2009-02-11
XIDIAN UNIV
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AI Technical Summary

Problems solved by technology

The method used in traditional data erasure is generally to fill and cover all the storage clusters occupied by the file once or even multiple times with useless data. Although this can achieve high security, it takes too long and cannot meet the needs of integrated avionics systems. At the same time, it cannot reflect the superiority of the integrated avionics system for the hierarchical safety management of documents

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  • Time termination high-performance grading data erasing method for synthetic aviation electronic system
  • Time termination high-performance grading data erasing method for synthetic aviation electronic system
  • Time termination high-performance grading data erasing method for synthetic aviation electronic system

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Embodiment Construction

[0029] 1. Explanation of the parameter symbols used in the invention

[0030] F: file name;

[0031] L: file size, in megabytes;

[0032] E: Whether the file is encrypted, E=0 the file is not encrypted, E=1 the file is encrypted;

[0033] T: Erase allowed time, assigned by the system, the maximum time allowed by the system when erasing specified files;

[0034] R i : File security level, the total number of levels is freely set by the system according to needs, and the ASAAC specification defaults to level 4 (Top Secret R 1 , Confidential R 2 , Secret R 3 , Unrated R 4 , R i is an integer, arranged from small to large, and the security level shown decreases in order);

[0035] R: the average value of all security levels of the current system, the present invention assumes that the current system has n security levels, then , R∈{R 1 , R 2 ,...,R i ,...,R n};

[0036] M: Master algorithm for data erasure;

[0037] h: cluster group length;

[0038] m: the number ...

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Abstract

The invention discloses a time-limited efficient method for erasing ranked data in an integrated avionics system, and provides a layered architecture to erase the data of the integrated avionics system, wherein the upper layer thereof is the ranked data erasing decision, which decides a sub-algorithm for erasing data in a file by adopting a 'mean correspondence diffusion method' and combining the file properties, such as security level, size, encryption, etc., as well as the system allowable erasing time. The lower layer is the ranked data erasing algorithm, which comprises a main erasing algorithm and an erasing algorithm set composed of erasing sub-algorithms, wherein, the main erasing algorithm is used for balancing the security and the timeliness of the file erasing by designing a 'skipping' method; the erasing sub-algorithms in the erasing algorithm set are generated and configured according to different parameters by the main erasing algorithm, and used for being called by the erasing decision, so as to erase the files at different security levels. The method for erasing the ranked data has the characteristics of limited time, high efficiency, safety and flexibility. Therefore, the method is suitable for the integrated airborne avionics system of the next-generation.

Description

technical field [0001] The invention belongs to the technical field of safety management of integrated avionics systems, and specifically relates to a time-limited and highly efficient hierarchical data erasure method in an integrated avionics system, which has real-time performance, high efficiency, safety and flexibility, and is suitable for the next generation Airborne integrated avionics system. Background technique [0002] With the development of high technology, the role of air power in military and civilian use is becoming more and more obvious. Military: Air power has the remarkable characteristics of global reach, quick battles, coordinated operations, strong firepower, and high survival rate, which determines that air power has the advantages of seizing air supremacy, ground attack, rapid response, and seizing "information control power". Irreplaceable role; civilian use: Air power also plays a huge role in emergency rescue and disaster relief, civil aviation tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 马建峰沈玉龙焦鹏程裴庆祺刘家佳尹文冠
Owner XIDIAN UNIV
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