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標題: Cryptanalysis of Liaw's broadcasting cryptosystem
作者: Tseng, Y.M.
Jan, J.K.
關鍵字: cryptography;broadcasting cryptosystem;cryptanalysis;computer-networks
Project: Computers & Mathematics with Applications
期刊/報告no:: Computers & Mathematics with Applications, Volume 41, Issue 12, Page(s) 1575-1578.
In 1999, Liaw proposed a new broadcasting cryptosystem, which requires smaller bandwidth as compared to the previously proposed broadcasting cryptosystems. However, this article will show that the proposed system is insecure enough by presenting a conspiracy attack on it. We will also point out some ambiguous problems in Liaw's paper. Moreover, we propose an improved broadcasting cryptosystem, which is a slight modification of the proposed system to overcome the conspiracy attack. (C) 2001 Elsevier Science Ltd. All rights reserved.
ISSN: 0898-1221
DOI: 10.1016/s0898-1221(01)00122-5
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