Shared file authority control method

Abstract

The invention discloses a shared file authority control method which is characterized by comprising the following steps: after a file is shared, an administrator sets authority according to the specific need; only the user conforming to the authority can access the shared file so as to realize the secure access to the shared file; the administrator firstly divides the key and label range according to the concrete working need of each user, and the user encrypted files in the same range share the same key; an illegal user without the authority can not access the shared file; if a user with other authority is to access the shared file, the administrator needs to grant the authority for accessing the file; and when in access, a key authentication technology is adopted to judge whether a client has the authority for accessing the shared encrypted file in the range, wherein the encrypted files in different ranges are not interoperable. Through the invention, based on file encryption, effective control on the authority of the shared file is realized, and the users in the authority range can access the shared encrypted file while the users outside the range can not access the shared encrypted file, thereby ensuring the security of the enterprise information.

Description

technical field [0001] The invention belongs to the technical field of computer information security, and in particular relates to a method for controlling the authority of shared files. Background technique [0002] With the popularization of the Internet, on the basis that the external threats to file security have been solved, the control of internal encrypted file permissions has become another new focus of attention in the field of information security. Encrypting and protecting internal files fundamentally solves external security threats to files, and the authority control of internal encrypted file sharing is also an important issue that enterprises and institutions must solve. In the information age, for enterprises and institutions, tangible fixed assets can be valued, but intangible digital assets are the foundation of an enterprise's survival. The rapid development of the Internet is a double-edged sword. On the one hand, the convenience of network communication...

AI Technical Summary

Problems solved by technology

However, there are many loopholes in these control technologies. Using reasonable sharing permission control can not only rationally allocate limited disk space, but also ensure safe access to shared files.

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