Processing method for improving safety of computer files

Abstract

The invention relates to a processing method for improving safety of computer files. The method comprises following steps: determining whether the file type of a new file belongs to the pre-set file type in a pre-set file catalogue when the new file is created and executing following steps if so: step S1, converting the new file to an electric signal: in the step of converting the file into the electric signal, firstly, representing the file in the binary form and then modulating the binary form to be the electric signal to form the electric signal; S2, proportionally comparing the electric signal to compress in the frequency domain; S3, filtering the compressed electric signal: completely filtering the part with value of magnitude exceeding the threshold value of the compressed electric signal; S4, storing the electric signal in a first hard disk; and storing it to a second hard disk if not. The method is used for restoring a computer-infecting file and encrypting and decrypting important files so that safety of computer files can be greatly improved.

Description

technical field [0001] The invention relates to a processing method for improving the security of computer files. Background technique [0002] Today's computer viruses are diverse, and it is difficult to find a universally used method to identify and restore all files infected with computer viruses. However, different viruses often have certain similarities. Starting from this similarity, an effective method for recovering computer files infected with a certain type of virus can often be found. There is a class of viruses (such as worms) that destroy computer files by invading normal computer files and copying data in large numbers at the point of intrusion. For suspicious files that may be infected with such computer viruses, it can be determined whether the suspicious files are infected with such viruses by judging the degree of matching between the suspicious files and normal files. Now that it is possible to identify whether a computer file is infected with this type ...

AI Technical Summary

Problems solved by technology

At the same time, it may be necessary to use different base functions or base signals for recovery of different files. In this way, if a certain damaged file can be recovered through a specific method, we can also use this "destruction" method To encrypt the files that need to be protected, if you don’t know the specific file recovery method (for example, if you don’t know how to choose the base function or base frequency), you can’t decrypt the file