Cryptanalysis and Improved Construction of a Group Key Agreement for Secure Group Communication

被引：0

作者：

Xu, Jun ^{[1
,2
]}

Hu, Lei ^{[1
,2
]}

Zhang, Xiaona ^{[1
,2
]}

Peng, Liqiang ^{[1
,2
]}

Huang, Zhangjie ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Informat Engn, State Key Lab Informat Secur, Beijing 100093, Peoples R China

[2] Chinese Acad Sci, Data Assurance & Commun Secur Res Ctr, Beijing 100093, Peoples R China

来源：

INFORMATION SECURITY, (ISC 2016) | 2016年 / 9866卷

关键词：

Group key agreement; Secure group communication; NTRU cryptosystem; Ciphertext-only attack;

D O I：

10.1007/978-3-319-45871-7_4

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, we give a ciphertext-only attack on a NTRU-based group key agreement. Our attack can recover the plaintext without having access to the secret decryption key of any group member even when there are only two group members. In order to overcome this drawback, we propose an improved group key agreement and make the corresponding cryptanalysis, which shows that it is secure and resilient to this ciphertext-only attack as well as other attacks under some constraints.

引用

页码：48 / 58

页数：11

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