A distributed cloud storage system based on smart contracts

A cloud storage system and smart contract technology, applied in the field of information security, can solve the problems of eavesdropping and leakage reduction of users' private information, and achieve the effects of ensuring recoverability, confidentiality, and reducing storage costs

Active Publication Date: 2021-03-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, since the data transmission is distributed among the nodes without going through a centralized link, the possibility of eavesdropping and leaking the user's private information is greatly reduced
However, the selection of trusted third parties is a huge challenge

Method used

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  • A distributed cloud storage system based on smart contracts
  • A distributed cloud storage system based on smart contracts
  • A distributed cloud storage system based on smart contracts

Examples

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] This embodiment provides a distributed cloud storage system based on smart contracts, and its system flow chart is as follows figure 1 As shown, the implementation flow chart is as follows figure 2 As shown, it includes 6 modules:

[0035] Initialize the module:

[0036] Data owners and lessors (network nodes that rent out local idle disks to data owners to store personal data) download the Ethereum client and register to obtain their respective keys pk O ,sk O , (pk L ,sk L ) and the corresponding address addr O 、addr L ;where pk O is the public key of the data owner, sk O is the private key of the data owner, pk L is the public key of the lessor, sk L is the private key of the lessor, addr O is the address of the data owner, addr L is the address of the lessor; at the same time, the initialization algorithm generates a set of chal...

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Abstract

The invention discloses a distributed cloud storage system based on an intelligent contract, which belongs to the technical field of information security. The method of the present invention includes six modules including initialization, generating blocks, signing, storing, deploying contracts and auditing. Compared with the existing cloud storage solution, the present invention can prevent single-point storage failure; can guarantee the confidentiality, availability and user control of outsourced data at a lower cost; can guarantee the anonymity of the identity of the data owner and lessor ; It can ensure that after the lessor stores the outsourced data according to the contract, the data owner cannot deny the storage service enjoyed, and it can also ensure that the mortgaged assets are automatically transferred to the lessor's account after each integrity audit.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a distributed cloud storage system based on an intelligent contract. Background technique [0002] Traditional cloud storage relies on the storage service provider as a trusted third party, which has many weaknesses based on the trust model. Traditional cloud storage services may cause data leakage or loss due to technical failures. In addition, the current cloud storage service providers charge too much surcharge beyond the core cost, which leads to a significant increase in the storage cost of user data. For cloud storage users, the cost of a decentralized storage system is only 1 / 100 to 1 / 10 of that of a traditional centralized storage system. What's more, due to the non-standardization of end-to-end encryption, traditional cloud storage faces various security threats, such as man-in-the-middle attacks, malware, and hacking programs that expose sensi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32H04L29/08
CPCH04L9/3236H04L9/3247H04L67/1097
Inventor 许春香薛婧婷
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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