J4 ›› 2012, Vol. 39 ›› Issue (4): 23-28+154.doi: 10.3969/j.issn.1001-2400.2012.04.005

• 研究论文 • 上一篇    下一篇



  1. (1. 西安电子科技大学 计算机网络与信息安全教育部重点实验室,陕西 西安  710071;
    2. 西安理工大学 理学院数学系,陕西 西安  710054)
  • 收稿日期:2011-04-18 出版日期:2012-08-20 发布日期:2012-10-08
  • 通讯作者: 孙瑾
  • 作者简介:孙瑾(1977-),女,讲师,西安电子科技大学博士研究生,E-mail: oksunjin@xaut.edu.cn.
  • 基金资助:


Fully secure attribute-based broadcast encryption

SUN Jin1,2;HU Yupu1   

  1. (1. Key Lab. of Computer Networks and Information Security of Ministry of Education, Xidian Univ., Xi'an  710071, China;
    2. Dept. of Application Mathematics, Xi'an Univ. of Tech., Xi'an  710048, China)
  • Received:2011-04-18 Online:2012-08-20 Published:2012-10-08
  • Contact: SUN Jin



关键词: 双系统密码, 基于属性的密码, 广播加密, 可证明安全


According to the broadcast encryption scheme with wide applications in the real world but to the fact that its security and efficiency can not be taken into consideration in the model simultaneously, a fully secure attribute-based broadcast encryption scheme is proposed by combining Waters dual system encryption and attribute-based cryptography. Based on the standard model, by using the orthogonality property of composite-order bilinear groups and the attribute vector, the scheme can achieve constant-size ciphertext which constrains four group exponents. The scheme is proved by using three static assumptions which do not depend on the number of queries the attacker makes. Furthermore, the analytical results indicate that the scheme of this paper is fully secure and can satisfy the higher efficiency and practical requirement.

Key words: dual system encryption, attribute-based cryptography, broadcast encryption, provably secure


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