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Cryptanalysis of Liaw's broadcasting Cryptosystem

✍ Scribed by Yuh-Min Tseng; Jinn-Ke Jan

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
195 KB
Volume
41
Category
Article
ISSN
0898-1221

No coin nor oath required. For personal study only.

✦ Synopsis

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.

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