File compression method and system

Abstract

The invention relates to the field of network information security, in particular to a file compression encryption and decryption method and system based on dynamic passwords. The method comprises the steps that first, a compression encryption device compresses an original file into a compressed file; second, a first dynamic password is input into the compression encryption device and an encryption key is generated; third, the compression encryption device encrypts the compressed file through the encryption key. According to the file compression encryption and decryption method and system, the file is compressed firstly, the dynamic passwords are obtained through a dynamic token, then, the encryption key is obtained through the dynamic passwords, and the compressed file can be encrypted; an authentication server and the dynamic token synchronously generate dynamic passwords, the dynamic passwords are compared so that the compressed file can be decrypted. Due to the fact that authenticity and integrity of the compressed file in the transmission process are guaranteed in the whole decryption process through the dynamic passwords, non-repudiation of signature verification of the compressed file is guaranteed, the file can be managed more easily, operation can be convenient to perform, and both safety and usability of file management can be achieved.

Description

technical field [0001] The invention relates to the field of network information security, in particular to a dynamic password-based file compression encryption and decryption method and system thereof. Background technique [0002] In recent years, with the development of computer technology, the amount of data processing has also increased. In order to store, process and transmit large amounts of data more effectively, compression technology has emerged as the times require, which can compress a large-capacity file into a small file. capacity files. [0003] The fast-paced life makes people get used to file transfer through the network. At present, most of the files on the file server commonly used on the Internet are compressed files. When using the file function, most of them choose to compress the attached file before sending it. As a result, in addition to reducing the load on the network, it can save time and money. [0004] With the rapid development of Internet t...

AI Technical Summary

Problems solved by technology

In the prior art file storage or transmission process, the worst case is that there is no compression or encryption. In this case, the security performance of the file cannot be guaranteed, and it also causes a waste of network resources to a certain extent; of course, In the best case, the file is both compressed and encrypted

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