移动社交网络中跨域代理重加密朋友发现隐私保护方案研究

发布时间：2018-11-05 08:30

【摘要】：在移动社交网络中,为保证交友过程中的用户隐私,提出跨域环境下的代理重加密交友隐私保护方案。利用跨域多授权中心共享密钥,实现了跨域用户数据的互相访问与共享;利用代理重加密与属性加密技术,对用户属性密钥进行重新加密,实现了以扩充交友访问策略条件的交友匹配;利用用户隐私密文文件与密钥分离技术,增强了用户数据的隐私性。解决了现有方案中存在的用户数据不能跨域跨云共享、交友过少匹配及用户下线不能交友的问题。安全和实验分析表明,方案可以达到选择明文攻击(CPA,chosen plaintext attack)安全,保证交友用户的隐私不被泄露,并且比现有方案更有效。
[Abstract]:In mobile social networks, in order to ensure the privacy of users in the process of making friends, an agent re-encryption privacy protection scheme in cross-domain environment is proposed. Using cross-domain multi-authorization center to share the key, the cross-domain user data can be accessed and shared. By using proxy reencryption and attribute encryption, the user attribute key is re-encrypted, and the matching of friends is realized in order to expand the policy conditions of making friends. The privacy of user data is enhanced by using privacy ciphertext file and key separation technology. It solves the existing problems that the user data can not be shared across domains across the cloud, the problem of making too few friends and the users can not make friends off the line. Security and experimental analysis show that the scheme can achieve selective plaintext attack (CPA,chosen plaintext attack) security, ensure that the privacy of friends is not disclosed, and is more effective than the existing scheme.
【作者单位】：湖南科技学院电子与信息工程学院;中南大学信息科学与工程学院;广州大学计算机科学与教育软件学院;湖南工程学院计算机与通信学院;信德农业大学信息技术中心;
【基金】：国家自然科学基金资助项目(No.61632009,No.61472451,No.61272151,No.61502163) 湖南省自然科学基金资助项目(No.2016JJ3051) 中央高校基本科研业务费专项基金资助项目(No.2016zzts060) 湖南省教育厅科研基金资助项目(No.2015C0589) 湖南省重点研发计划基金资助项目(No.2017NK2390) 湖南科技学院计算机应用技术重点建设学科基金资助项目(No.128030219-001)~~
【分类号】：TP309

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