File security method in limited area based on position information

Abstract

The invention discloses a file security method in a limited area based on position information, which aims at safe communication in a certain area. A file security system in the limited area based on the position information is established at first, wherein the file security system is composed of user hosts, a safety management host and a global positioning system, the safety management host is equipped with a file privilege management program, and each user host is provided with a position information module and a file privilege service program. The security method comprises that the safety management host generates a private key for the user host; a sending part encrypts a message, and a position private key is generated according to a safety area limited by the message; the safety management host determines data validity of a position private key of a receiving part to verify whether the receiving part is in the safety area; and the receiving part decrypts the message in the limited area. The file security method controls the private area via double authentication means including user password and geographical position, and is suitable for secret places as secret conferences and secret rooms.

Description

technical field [0001] The invention relates to a method for securing files in a limited area based on location information, and belongs to the technical field of information security. Background technique [0002] Currently, the State Secrets Law stipulates that top-secret documents can only be accessed at designated locations. Similarly, units related to national security and cutting-edge technology (especially national defense and military industry) also require employees to complete their work in a specified area, and they are not allowed to continue using work resources if they leave the specified physical location. In addition to the requirements of rules and regulations, it is technically necessary to achieve limited area access control, that is, files in the computer can only be accessed in specified areas such as secret rooms, offices, etc. Once the specified area is exceeded, the files in the computer cannot be accessed. Accessed by any user. [0003] The traditi...

AI Technical Summary

Problems solved by technology

The file encryption method based on visible light invented by Xing Zhibo of Beihang University and others in 2011 uses optical communication to encrypt files in a certain area, but this method has the disadvantages of fixed security area and difficult expansion

In 2003, Logan Scott abroad proposed an encryption method based on geographic location information. However, in this method, the two parties communicate directly and there is no third party to monitor. It is not suitable for high security applications such as confidential meetings that require monitoring of the communication process. occasion

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