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2005 | OriginalPaper | Chapter
Cryptanalysis and Improvement of a Multisignature Scheme
Authors : Manik Lal Das, Ashutosh Saxena, V. P. Gulati
Published in: Distributed Computing – IWDC 2005
Publisher: Springer Berlin Heidelberg
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A multisignature scheme for implementing safe delivery rule in group communication systems (MSGC) was recently proposed by Rahul and Hansdah. In this paper we show that the MSGC scheme is insecure against forgery attack and signature integrity attack. We propose an improved scheme that resists the weaknesses of MSGC scheme.