Highly reusable cloud storage data storage verification method and system

Abstract

The invention discloses a highly reusable cloud storage data storage verification method and system. The method includes: receiving a data storage verification query request of a user; confusing a current verification time and obtaining a challenge key sequence number; replacing the current verification time with the challenge key sequence number and obtaining a current challenge key and verification label; selecting P-1 pseudo-random numbers from a pseudo-random number group and mixing the pseudo-random numbers with the current challenge key so as to form a query number group; a server generating a verification label sequence and returning the verification label sequence to a client; and the client filtering the verification label sequence and comparing a filtered verification label with the verification label so as to judge whether a file is destroyed. The beneficial effects of the highly reusable cloud storage data storage verification method and system are capable of obtaining a comparatively high verification credibility at a comparatively small computing cost; and challenges of the file verification label include a real challenge parameter and a series of pseudo-random numbers at each time so that the number of possible pseudo-random labels is increased significantly and thus it is prevented that the user uses a saved correct signature to realize replay attacks.

Description

technical field [0001] The present invention relates to the computer field, and more specifically, relates to a highly reusable cloud storage data storage verification method and system. Background technique [0002] Because the cloud storage system can provide enterprises and individual users with on-demand elastic expansion of massive data storage management services at a low price, saving users the cost of special maintenance and management of the file storage system, it is welcomed by the market. [0003] However, while cloud storage brings convenience to users, it also brings new challenges and threats to data protection. Since the data is stored in the cloud and out of the control of the user, the user cannot monitor and manage the data in real time. If the data and files in the cloud storage are tampered with or damaged due to hacker attacks, administrator misoperations, malicious acts, etc., users can only rely on the cloud storage system to discover these changes. ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a highly reusable cloud storage verification method for the defect that once the tags of the above-mentioned data storage verification method in the prior art are exhausted, the server may encounter a replay attack and cannot continue to verify the file status. The storage data storage verification method and system realize the reuse of verification tags in the verification process and increase the availability of verification tags

Images