Partially hidden policy multi-authority CP-ABE scheme with constant length ciphertext

LIU Yilong; XU Shengwei; YUE Ziyan

doi:10.11959/j.issn.1000-436x.2024142

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Partially hidden policy multi-authority CP-ABE scheme with constant length ciphertext

Papers | 更新时间：2024-09-10

- Partially hidden policy multi-authority CP-ABE scheme with constant length ciphertext
- Journal on Communications Vol. 45, Issue 8, Pages: 20-36(2024)
- 作者机构：
  
  1.北京邮电大学网络空间安全学院,北京 100876
  2.北京电子科技学院网络空间安全系,北京 100070
  3.北京电子科技学院信息安全研究所,北京 100070
- 作者简介：
- 基金信息：
  
  The National Key Research and Development Program of China(2022YFB3104402)
- DOI：10.11959/j.issn.1000-436x.2024142
  CLC： TP393
- Received：08 April 2024，
  
  Revised：2024-07-08，
  
  Published：25 August 2024
- 稿件说明：
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刘怡龙,许盛伟,岳梓岩.密文长度固定的策略部分隐藏多授权机构CP-ABE方案[J].通信学报,2024,45(08):20-36.

LIU Yilong,XU Shengwei,YUE Ziyan.Partially hidden policy multi-authority CP-ABE scheme with constant length ciphertext[J].Journal on Communications,2024,45(08):20-36.
刘怡龙,许盛伟,岳梓岩.密文长度固定的策略部分隐藏多授权机构CP-ABE方案[J].通信学报,2024,45(08):20-36. DOI： 10.11959/j.issn.1000-436x.2024142.

LIU Yilong,XU Shengwei,YUE Ziyan.Partially hidden policy multi-authority CP-ABE scheme with constant length ciphertext[J].Journal on Communications,2024,45(08):20-36. DOI： 10.11959/j.issn.1000-436x.2024142.

摘要

针对现有访问策略隐藏的密文策略属性加密（CP-ABE）方案存在的安全性低、资源开销大的问题，提出了一种密文长度固定的策略部分隐藏多授权机构CP-ABE方案。首先，通过隐藏访问策略中的属性值，降低隐私数据泄露的风险；其次，通过固定密文长度和使用外包解密技术，减少用户的资源开销；最后，采用多授权机构管理机制，避免部署单一授权机构易产生的密钥托管问题。通过安全分析证明了方案在标准模型中满足选择明文攻击下的密文不可区分性，以及方案隐藏的访问策略和产生的外包密钥能够抵抗属性值猜测攻击。通过与已有方案的性能对比，证明了所提方案的总体资源开销更小。

Abstract

To solve the problems of low security and high resource overhead of existing hidden policy ciphertext policy attribute-based encryption (CP-ABE) schemes

a partially hidden policy multi-authority CP-ABE scheme with constant length ciphertext was proposed. Firstly

the values of the attributes in the access policy were hidden

enabling the proposed scheme to reduce the risk of private data leakage. Secondly

by fixing the ciphertext length and using outsourcing decryption techniques

the resource overhead for the user was reduced in the proposed scheme. Finally

the multi-authority management mechanism was used so that the proposed scheme avoided the key escrow problem that can easily arise when using a single authoritative authority. The security analysis proves that the proposed scheme satisfies the indistinguishability under chosen plaintext attack in the standard model

as well as the scheme’s hidden access policy and the generated outsourcing key can resist attribute value guessing attack. The overall resource overhead of the proposed scheme is proven to be lower by comparing its performance with the existing schemes.

关键词

Keywords

references

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