A security protection system and method for local data

Abstract

The present invention discloses a local data security protection system and method. The method comprises writing file attribute information and filling information of a to-be-protected file into a virtual file of a computer private disk; using a mobile private disk to randomly generate a data encryption key and a crushing secret key, and encrypting the data encryption key and the crushing secret key by using an encryption public key stored in a USBKey, thus to obtain a data encryption key ciphertext and a crushing secret key ciphertext; calling a password of the mobile private disk to encrypt the to-be-protected data file, crushing and blocking ciphertext data according to a crushing fraction n, thus to obtain n fragmented files, and calculating HASH values for each fragmented file; reading storage proportions of the computer private disk and the mobile private disk in a configuration file, and grouping according to the storage proportions; storing related information of the protected data file into data items of a file key information sheet and a fragment index information sheet of an indexical database; and storing the grouped fragmented files into the pre-set computer private disk and mobile private disk.

Description

technical field [0001] The present invention relates to the technical field of information security, in particular to a local data security protection system and method. Background technique [0002] Along with people's daily life, most of the electronic data such as personal data and important files are stored on the hard disk of the computer in the form of data, and these data are easily stolen by hackers by implanting Trojan horse software into the computer. In recent years, a large number of personal data leakage incidents have occurred at home and abroad, and personal data information security has become a hot topic today. [0003] In the existing electronic document transparent encryption and decryption system, the common method is to perform transparent encryption and decryption based on file redirection. Although a series of protection measures have been taken for the file, the encrypted file that saves the file data is always deleted from the file creation to the co...

AI Technical Summary

Problems solved by technology

[0002] With people's daily life, electronic data such as private information and important documents are mostly stored in the form of data on computer hard drives, and these data are easily stolen by hackers by implanting Trojan horse software into computers

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