Fully Secure Identity-based Broadcast Encryption in the Subgroups

被引：0

作者：

Zhang Leyou ^{[1
,2
]}

Hu Yupu ^{[2
]}

Wu Qing ^{[3
]}

机构：

[1] Xidian Univ, Dept Math Sci, Xian 710071, Peoples R China

[2] Xidian Univ, Minist Educ, Key Lab Comp Networks & Informat Secur, Xian 710071, Peoples R China

[3] Xian Inst Posts & Telecommun, Sch Automat, Xian 710121, Peoples R China

来源：

CHINA COMMUNICATIONS | 2011年 / 8卷 / 02期

关键词：

identity-based broadcast encryption; dual system encryption; full security; static assumption; subgroup; provable security; DUAL SYSTEM ENCRYPTION; SHORT CIPHERTEXTS; HIBE;

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this paper, we show how to use the dual techniques in the subgroups to give a secure identity-based broadcast encryption(IBBE) scheme with constant-size ciphertexts. Our scheme achieves the full security (adaptive security) under three static (i.e. non q-based) assumptions. It is worth noting that only recently Waters gives a short ciphertext broadcast encryption system that is even adaptively secure under the simple assumptions. One feature of our methodology is that it is relatively simple to leverage our techniques to get adaptive security.

引用

页码：152 / 158

页数：7

共 9 条

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