计算机应用 ›› 2016, Vol. 36 ›› Issue (10): 2762-2766.DOI: 10.11772/j.issn.1001-9081.2016.10.2762

• 网络空间安全 • 上一篇    下一篇

标准模型下高效的基于身份匿名广播加密方案

明洋, 原红平, 孙变, 乔正阳   

  1. 长安大学 信息工程学院, 西安 710064
  • 收稿日期:2016-03-07 修回日期:2016-04-07 出版日期:2016-10-10 发布日期:2016-10-10
  • 通讯作者: 原红平,E-mail:1058745109@qq.com
  • 作者简介:明洋(1979—),男,陕西榆林人,教授,博士,主要研究方向:公钥密码学、网络安全、云计算安全;原红平(1989—),女,山西晋城人,硕士研究生,主要研究方向:加密;孙变(1991—),女,陕西西安人,硕士研究生,主要研究方向:数字签名;乔正阳(1989—),男,河南开封人,硕士研究生,主要研究方向:在线/离线加密及签名。
  • 基金资助:
    国家自然科学基金资助项目(61202438);陕西省工业科技攻关项目(2015GY014);西安市科技计划项目(CXY1437(10))。

Efficient identity-based anonymous broadcast encryption scheme in standard model

MING Yang, YUAN Hongping, SUN Bian, QIAO Zhengyang   

  1. School of Information Engineering, Chang'an University, Xi'an Shannxi 710064, China
  • Received:2016-03-07 Revised:2016-04-07 Online:2016-10-10 Published:2016-10-10
  • Supported by:
    BackgroundThis work is partially supported by the National Natural Science Foundation of China (61202438), the Key Science and Industrial Technology Program of Shaanxi Province (2015GY014), the Xi'an Science and Technology Program (CXY1437 (10)).

摘要: 针对现实中广播加密的安全问题,提出一种标准模型下高效的基于身份匿名广播加密方案。匿名广播加密中广播者加密数据通过广播信道发送给用户,其中只有授权用户能够解密获得数据,同时任何人不能分辨出加密数据是发送给哪个用户的,从而保护了接收者用户的隐私。所提方案利用双系统加密技术,基于合数阶双线性群提出。同时,该方案基于静态假设,在标准模型中证明方案是选择明文安全的,密文和密钥取得了固定长度。和对比方案相比,所提方案密钥长度仅需2个群元素,同时方案满足匿名性。

关键词: 标准模型, 广播加密, 双系统加密, 静态假设, 双线性对

Abstract: Concerning the broadcast encryption security problem in reality, a new identity-based anonymous broadcast encryption scheme in the standard model was proposed. In a anonymous broadcast encryption scheme, broadcaster sent encrypted data to the user via a broadcast channel, which only authorized users could decrypt and access the data; meanwhile, no one knew whom the encrypted data was sent to. Thereby the recipient user's privacy was protected. The scheme was proposed by combining with dual system encryption and composite-order bilinear groups. Based on static assumptions, the proposed scheme is chosen plaintext secure in the standard model, the ciphertext and private key in the scheme has fix length. Compared with the contrast scheme, the length of key is only two group elements, and the proposed scheme can satisfy the anonymity.

Key words: standard model, broadcast encryption, dual system encryption, static assumption, bilinear pairing

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