摘要
为解决电子合同在存储、共享过程中出现的数据被篡改或泄露等问题,提出了一种基于区块链的电子合同共享方案。首先,将智能合约与代理重加密技术相结合,构造出一个代理智能合约来代替传统代理重加密过程中的代理商,去中心化地实现了电子合同的安全共享。其次,利用星际文件系统(inter planetary file system,IPFS)存储电子合同密文,区块链存储电子合同索引地址,有效缓解了区块链的存储压力。最后,从方案对比、安全性等方面对所提方案进行分析。
In order to solve the problems of data tampering or leakage in the storage and sharing of electronic contracts,an electronic contract sharing scheme based on blockchain is proposed.First,a proxy smart contract is constructed by combining the contract with the proxy re-encryption to replace the traditional proxy,and the secure sharing of electronic contract is decentralized.Inter planetary file system(IPFS)is then used to store the ciphertext of electronic contract,and the electronic contract index address is stored in the blockchain,which effectively alleviates the storage pressure of the blockchain.Finally,the security performance of the proposed scheme is analyzed.
作者
赵海鸿
姚中原
祝卫华
朱自强
潘长风
斯雪明
ZHAO Haihong;YAO Zhongyuan;ZHU Weihua;ZHU Ziqiang;PAN Changfeng;SI Xueming(The Frontier Information Technology Research Institute,Zhongyuan University of Technology,Zhengzhou 450007,Henan,China;Henan International Joint Laboratory of Blockchain and Data Sharing,Zhongyuan University of Technology,Zhengzhou 450007,Henan,China;New Huadu Business School,Minjiang University,Fuzhou 350121,Fujian,China;School of Computer Science,Fudan University,Shanghai 201203,China)
出处
《应用科学学报》
CAS
CSCD
北大核心
2023年第2期359-368,共10页
Journal of Applied Sciences
基金
河南省重大公益专项(No.201300210300)
河南省网络密码技术重点实验室开放课题(No.LNCT2019-A07)
河南省高等学校重点项目基金(No.19A520047)资助。
关键词
电子合同
区块链
智能合约
代理重加密
星际文件系统
electronic contract
blockchain
smart contract
proxy re-encryption
inter planetary file system(IPFS)
