Open file encrypting method without distinguishing file types

Abstract

The invention relates to an open file encrypting method without distinguishing file types, comprising the steps as follows: determining whether the file is confidential by the file opening manner; using the files opened in read-write or write manner as confidential file when opened during the confidential process, and adding marks marking whether the file is encrypted; using the file as non-confidential file if the file is opened in a write manner; determining the process of the access file in an access control layer and making a decision; setting the confidential file as to-be-decrypted filewhen the confidential file is read in the confidential process; setting the file as to-be-encrypted file when the confidential file is written in the confidential process; and setting the confidentialfile as non-decrypted file when the confidential file or non-confidential file is read and written in the non-confidential process. In the invention, trivial determination of the extended file name is avoided, and all written sensitive files are encrypted in the process just by binding special process without affecting the normal operation of the process.

Description

technical field [0001] The invention mainly relates to the field of information security, mainly a transparent file encryption method that does not distinguish file types, and an automatic protection encryption method for preventing information from being copied out of a safe computer system environment without authorization. Background technique [0002] Information encryption technology has gone through two stages: traditional encryption technology and transparent encryption technology. [0003] Traditional encryption technology is man-made active encryption. For example, RAR with password compression, using the NTFS file system of Windows operating system and doing EFS encryption, using encrypted directories, encrypted hard disks, encrypted folders, etc., all require the operator to operate the encryption by himself. This type of encryption method can effectively prevent data loss and theft such as loss of portable devices and hard drives, but traditional encryption tech...

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to overcome the essential weakness of the traditional transparent file encryption system, that is, it is necessary to bind a specific file type to determine whether encryption is required, thereby causing the inherent unavoidable loophole problem of this type of system, and further affecting the security and confidentiality requirements of this type of system The promotion of higher units provides a transparent file encryption method that does not distinguish between file types. Applying this method can completely solve the problems related to file extension restrictions such as file renaming

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