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支持策略隐藏且密文长度恒定的可搜索加密方案

杨小东 李婷 麻婷春 陈桂兰 王彩芬

杨小东, 李婷, 麻婷春, 陈桂兰, 王彩芬. 支持策略隐藏且密文长度恒定的可搜索加密方案[J]. 电子与信息学报, 2021, 43(4): 900-907. doi: 10.11999/JEIT200083
引用本文: 杨小东, 李婷, 麻婷春, 陈桂兰, 王彩芬. 支持策略隐藏且密文长度恒定的可搜索加密方案[J]. 电子与信息学报, 2021, 43(4): 900-907. doi: 10.11999/JEIT200083
Xiaodong YANG, Ting LI, Tingchun MA, Guilan CHEN, Caifen WANG. Searchable Encryption Scheme Supporting Policy Hiding and Constant Ciphertext Length[J]. Journal of Electronics & Information Technology, 2021, 43(4): 900-907. doi: 10.11999/JEIT200083
Citation: Xiaodong YANG, Ting LI, Tingchun MA, Guilan CHEN, Caifen WANG. Searchable Encryption Scheme Supporting Policy Hiding and Constant Ciphertext Length[J]. Journal of Electronics & Information Technology, 2021, 43(4): 900-907. doi: 10.11999/JEIT200083

支持策略隐藏且密文长度恒定的可搜索加密方案

doi: 10.11999/JEIT200083
基金项目: 国家自然科学基金(61662069, 61562077),中国博士后科学基金(2017M610817),兰州市科技计划项目(2013-4-22),西北师范大学青年教师科研能力提升计划(NWNU-LKQN-14-7)
详细信息
    作者简介:

    杨小东:男,1981年生,博士,教授,研究方向为代理重签名和云计算安全

    李婷:女,1995年生,硕士生,研究方向为云审计安全

    麻婷春:女,1992年生,硕士生,研究方向为属性加密

    陈桂兰:女,1995年生,硕士生,研究方向为可搜索加密

    王彩芬:女,1963年生,博士,教授,研究方向为信息安全协议与网络安全

    通讯作者:

    杨小东 y200888@163.com

  • 中图分类号: TN918.4

Searchable Encryption Scheme Supporting Policy Hiding and Constant Ciphertext Length

Funds: The National Natural Science Foundation of China (61662069, 61562077), The Postdoctoral Science Foundation of China (2017M610817), The Science and Technology Project of Lanzhou City (2013-4-22), The Foundation of Northwest Normal University (NWNU-LKQN-14-7)
  • 摘要: 属性加密体制是实现云存储中数据灵活访问控制的关键技术之一,但已有的属性加密方案存在密文存储开销过大和用户隐私泄露等问题,并且不能同时支持云端数据的公开审计。为了解决这些问题,该文提出一个新的可搜索属性加密方案,其安全性可归约到q-BDHE问题和CDH问题的困难性。该方案在支持关键词搜索的基础上,实现了密文长度恒定;引入策略隐藏思想,防止攻击者获取敏感信息,确保了用户的隐私性;通过数据公开审计机制,实现了云存储中数据的完整性验证。与已有的同类方案相比较,该方案有效地降低了数据的加密开销、关键词的搜索开销、密文的存储成本与解密开销,在云存储环境中具有较好的应用前景。
  • 图  1  系统模型

    图  2  计算和存储开销对比

    表  1  计算开销对比

    方案加密开销解密开销关键词搜索开销
    文献[20]$3{T_E}$$({n_d} + 2){T_P} + {n_d}{T_E}$/
    文献[26]$({n_\omega } + 6){T_E}$/$(2{n_s} + 1){T_P} + {T_E}$
    文献[27]$(3{n_\omega } + 4){T_E}$${T_P} + {n_d}{T_E}$$(2{n_s} + 1){T_P} + {n_s}{T_E}$
    本文方案$3{T_E}$$2{T_P}$$3{T_P} + {T_E}$
    下载: 导出CSV

    表  2  存储开销对比

    方案属性权威中心数据拥有者访问用户云服务提供商
    文献[20]$2\left| {{Z_P}} \right|$$(2{n_a} + 1)\left| {{G_1}} \right|$${n_k}\left| {{G_1}} \right|{\rm{ + }}\left| {{Z_p}} \right|$$3\left| {{G_1}} \right| + \left| {{G_T}} \right|$
    文献[26]$({n_\omega } + 2)\left| {{Z_P}} \right|$$({n_a} + 1)\left| {{G_1}} \right|$$(2{n_k} + 1)\left| {{G_1}} \right| + \left| {{Z_P}} \right|$$(2{n_\omega } + 1)\left| {{G_1}} \right| + \left| {{G_T}} \right|$
    文献[27]$\left| {{G_1}} \right| + \left| {{Z_P}} \right|$${n_a}\left| {{G_1}} \right| + \left| {{Z_P}} \right|$$({n_k} + 1)\left| {{G_1}} \right|{\rm{ + }}\left| {{G_T}} \right|$$({n_\omega } + 2)\left| {{G_1}} \right| + \left| {{G_T}} \right|$
    本文方案$({n_\omega } + 2)\left| {{Z_P}} \right|$${n_a}\left| {{G_1}} \right|{\rm{ + }}{n_a}\left| {{G_T}} \right|$${n_k}\left| {{G_1}} \right|{\rm{ + }}\left| {{G_T}} \right|$$2\left| {{G_1}} \right| + \left| {{G_T}} \right|$
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-01-20
  • 修回日期:  2021-10-21
  • 网络出版日期:  2020-11-16
  • 刊出日期:  2021-04-20

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