基于向量承诺与代理重加密的数据外包及分享方案

Data Outsourcing and Sharing Scheme Based on Vector Commitment and Proxy Re-encryption

为保障外包数据的完整性、机密性以及可访问性,在向量承诺原语基础上,结合代理重加密技术,提出一种安全的数据外包及分享方案。通过引入对承诺值的数字签名,使得任意第三方可以在数据拥有者和服务提供商均不完全可信的情况下,对外包数据的完整性进行校验,数据拥有者可以对外包数据执行高效的添加、删除、修改和访问授权操作。性能及安全性分析结果表明了该方案的可行性。

In order to guarantee the integrity,confidentiality and accessibility of outsourcing data,a secure data outsourcing and sharing scheme is proposed based on the vector commitment primitive and the proxy re-encryption technology.By introducing a digital signature of the commitment value,any third party can verify the integrity of the outsourcing data without the data owner and service provider being fully trusted,and the data owner can perform efficient execution of the outsourcing data adding,deleting,modifing,and accessing authorization actions.Performance and safety analysis results show the feasibility of the scheme.