# An efficient blockchain-based framework for file sharing

## TL;DR

This paper introduces a blockchain-based system for secure and efficient file sharing that addresses issues like tamper detection and confidentiality loss.

## Contribution

The paper proposes a new consensus mechanism combining DPoS and PBFT for secure and efficient blockchain-based file sharing.

## Key findings

- The framework uses distributed storage and asymmetric encryption to ensure reliable and traceable file sharing.
- The proposed consensus mechanism achieves higher throughput compared to existing schemes.

## Abstract

File sharing, being the foundation of the Internet, has traditionally relied on a centralized service architecture resulting in significant maintenance costs. Moreover, due to the lack of an effective file management system, instances of sensitive information going out of control and loss of confidentiality in file sharing have occurred frequently. In order to address the difficulty of tamper detection and the lack of supervision in the entire process of file transfer in the current Internet environment, this paper designs a blockchain-based system architecture for secure sharing of electronic documents. An efficient blockchain model is used in our framework, and with the help of distributed storage system and asymmetric encryption technology, file sharing can be controlled, reliable and traceable in the transfer process. Referring to existing consensus mechanisms, e.g., Delegated Proof of Stake (DPoS) and Practical Byzantine Fault Tolerance (PBFT), we propose a new consensus for efficient and secure file sharing. Our experimental results show that our framework can maintain a higher throughput than existing schemes