Cloud storage service-oriented dynamic data integrity auditing program

Abstract

The invention discloses a cloud storage service-oriented dynamic data integrity auditing program, and aims to overcome the deficiency of an existing data integrity examination program of the cloud storage service in supporting the user dynamic operation. The cloud storage service-oriented dynamic data integrity auditing program includes a key generation phase in which a user generates a pair of public and private keys and transmits the public key to a cloud service supplier and an auditor; a data outsourcing phase in which the user transmits data blocks and labels to the cloud service supplier, and the cloud service supplier verifies the correctness of the labels; a cloud data integrity auditing phase in which the auditor transmits an audit request to the cloud service supplier, and a cloud server computes an evidence and returns the evidence to the auditor, and finally the auditor verifies the correctness of the evidence; and a cloud data dynamic updating phase in which the user transmits the data blocks and the labels to the cloud service supplier, and the cloud service supplier performs update operation and informs the user of an updated result. The cloud storage service-oriented dynamic data integrity auditing program can not only effectively satisfy a safety requirement of the data integrity auditing program of the cloud storage service but also effectively support dynamic operations of users.

Description

technical field [0001] The invention belongs to the technical field of cloud storage security, and more specifically relates to a dynamic data integrity audit scheme for cloud storage services. Background technique [0002] As a development trend of future storage technology, cloud storage provides convenient and low-cost mass storage services for cloud computing. Users store personal data in cloud servers, which not only reduces the user's storage burden, but also enables access to cloud data anytime, anywhere. However, users do not have absolute control over personal data in the cloud, so data security is an issue that cannot be ignored. [0003] At present, researchers have proposed a variety of data integrity checking schemes for cloud storage services, but the existing dynamic audit schemes have problems of insecurity and low efficiency. The user's dynamic operations may lead to the following attacks: replay attack - a malicious cloud service provider uses an outdated...

AI Technical Summary

Problems solved by technology

However, users do not have absolute control over personal data in the cloud, so data security is an issue that cannot be ignored

[0003] At present, researchers have proposed a variety of data integrity checking schemes for cloud storage services, but the existing dynamic audit schemes have problems of insecurity and low efficiency.

The user's dynamic operations may lead to the following attacks: replay attack - a malicious cloud service provider uses an outdated version of the data block and label to pass the auditor's verification, forgery attack - a malicious cloud service provider forges a label To deceive the auditor's verification, deletion attack - a malicious cloud service provider deliberately deletes a part of user data or pre-calculated aggregated data blocks and tags

Images