Cryptanalysis of an identity based broadcast encryption scheme without random oracles

被引：10
|
作者：
Wang, Xu An [2 ]
Weng, Jian [1 ,3 ,4 ]
Yang, Xiaoyuan [2 ]
Yang, Yanjiang [5 ]
机构：
[1] Jinan Univ, Dept Comp Sci, Guangzhou 510632, Guangdong, Peoples R China
[2] Engn Coll Chinese Armed Police Force, Key Lab Informat & Network Secur, Xian 710086, Peoples R China
[3] Beijing Univ Posts & Telecommun, State Key Lab Networking & Switching Technol, Beijing 100876, Peoples R China
[4] Chinese Acad Sci, Inst Software, State Key Lab Informat Secur, Beijing 100080, Peoples R China
[5] Inst Infocomm Res I2R, Singapore 119613, Singapore
来源：
INFORMATION PROCESSING LETTERS | 2011年 / 111卷 / 10期
基金：
国家高技术研究发展计划(863计划); 美国国家科学基金会;
关键词：
Cryptography; Identity based broadcast encryption; Chosen-ciphertext attack; Chosen-plaintext attack; CONSTANT-SIZE CIPHERTEXTS;
D O I：
10.1016/j.ipl.2011.02.007
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Identity based broadcast encryption allows a centralized transmitter to send encrypted messages to a set of identities S, so that only the users with identity in S can decrypt these ciphertexts using their respective private key. Recently [Information Processing Letters 109 (2009)], an identity-based broadcast encryption scheme was proposed (Ren and Gu, 2009) [1], and it was claimed to be fully chosen-ciphertext secure without random oracles. However, by giving a concrete attack, we indicate that this scheme is even not chosen-plaintext secure. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：461 / 464
页数：4
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