A Privacy Preserving Friend Discovery Multi Key Obfuscation Scheme in Mobile Social Networks

LUO En-tao; CHEN Shu-hong; WANG Wen-bo; ZHANG Shao-bo; PINIAL Khan-butt

doi:10.3969/j.issn.0372-2112.2018.09.012

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A Privacy Preserving Friend Discovery Multi Key Obfuscation Scheme in Mobile Social Networks

更新时间：2025-07-16

- A Privacy Preserving Friend Discovery Multi Key Obfuscation Scheme in Mobile Social Networks
- Acta Electronica Sinica Vol. 46, Issue 9, Pages: 2123-2130(2018)
- 作者机构：
  
  1. 湖南科技学院电子与信息工程学院,湖南,永州,425199
  2. 广州大学计算机科学与教育软件学院,广东,广州,510006
  3. 加拿大麦特马斯特大学计算机与软件学院, 加拿大汉密尔顿,L8R 5G8
  4. 湖南科技大学计算机与工程学院,湖南,湘潭,411101
  5. 信德农业大学信息技术中心, 巴基斯坦信德,70060
  6. 湖南科技学院电子与信息工程学院,湖南,永州,425199
  7. 广州大学计算机科学与教育软件学院,广东,广州,510006
  8. 加拿大麦特马斯特大学计算机与软件学院加拿大汉密尔顿,L8R 5G8
  9. 湖南科技大学计算机与工程学院,湖南,湘潭,411101
  10. 信德农业大学信息技术中心巴基斯坦信德,70060
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2018.09.012
  CLC： TP393
- Published Online：25 September 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
LUO En-tao, CHEN Shu-hong, WANG Wen-bo, et al. A Privacy Preserving Friend Discovery Multi Key Obfuscation Scheme in Mobile Social Networks[J]. Acta Electronica Sinica, 2018, 46(9): 2123-2130.
DOI：

LUO En-tao, CHEN Shu-hong, WANG Wen-bo, et al. A Privacy Preserving Friend Discovery Multi Key Obfuscation Scheme in Mobile Social Networks[J]. Acta Electronica Sinica, 2018, 46(9): 2123-2130. DOI： 10.3969/j.issn.0372-2112.2018.09.012.

摘要

在移动社交网络中，为保证交友匹配过程中用户的隐私，提出多密钥混淆隐私保护方案.利用代理重加密技术，对用户密钥密文进行重新加密，实现了以扩充交友访问策略条件的交友匹配，并保证密文转换过程中用户的隐私不被泄露；利用随机密文组件加密技术，实现了对真实明文对应加密文件的信息隐藏，提高了攻击者的破解难度；利用数据摘要签名技术，解决了以往方案未考虑的多加密文件对应的文件解密问题.安全和实验分析表明，本文方案可以达到CPA（Chosen Plaintext Attack）安全，可以保证交友用户的隐私不被泄露，并且比既有的方案更有效.

Abstract

In mobile social networks

in order to ensure the privacy of users in the process of friend matching

a privacy protection scheme for multiple keys is proposed. Proxy re-encryption technology is utilized to encrypt the user's key into ciphertext

expand friend matching access policy conditions and ensure no leakage of the ciphertext of user privacy during the process of transformation. The employed encryption technology of random ciphertext components can realize the hidden information of the plainntext

and improve the crack difficulty of the attacker. Multiple encrypted files decryption problem is solved by data signature technology

which are not considered by previous works. Security and experimental analysis show that this scheme can achieve CPA (Chosen Plaintext Attack) security

ensure the privacy of friend discovery

and that is more effective than existing solutions.

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