Identity-based cloud storage efficient auditing method capable of acting and uploading data

Abstract

The invention discloses an identity-based cloud storage efficient auditing method capable of acting and uploading data, comprising: an initialization step, a proxy signer private key generating step,a data proxy signature generating and uploading step, and an auditing certificate generating and verifying step. The auditing method provided by the invention helps the data owner to authorize the proxy signer to generate the proxy signature of the data and upload the same to the cloud server, and helps the trusted auditor to perform integrity auditing on the cloud storage data. By compressing thedata file into a homomorphic message authentication code, using the elliptic curve signature algorithm to digitally sign the message authentication code of the data block, encrypting the data file with a lightweight stream password, and finally storing the signature set and the ciphertext in the cloud server, thus not only ensuring the confidentiality of data files, but effectively solving the problem of integrity verification of the remote cloud storage data.

Description

technical field [0001] The invention relates to the technical field of cyberspace security, in particular to an identity-based cloud storage efficient audit method that can upload data by proxy. Background technique [0002] With the rapid development of cloud computing and Internet of Things technologies, massive amounts of big data will be stored in remote cloud servers. In this developed network environment, how to ensure that the information sent by the information source is complete and has not been tampered with, and how to ensure the storage The integrity of the data on the cloud server is the focus of information security that people have paid attention to in recent years. Relevant cryptographic technology, digital signature technology, digital signature and security audit can effectively solve these information security problems. They play a vital role in establishing a complete security mechanism in the entire information domain, which is very important in today's ...

AI Technical Summary

Problems solved by technology

At present, many cloud storage data security audit schemes with data integrity verification function have appeared, but there are very few cloud storage data security audit schemes that support data proxy uploading. Currently, there is only one construction scheme with this function, but this The scheme directly stores the original data of the data owner in the cloud server, which cannot ensure the confidentiality of the data, and the scheme is based on the bilinear pairing structure, and the calculation overhead is very large

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