Title :
Weakness of the Synchro-Difference LKH Scheme for Secure Multicast
Author :
Kim, Heeyoul ; Chung, Byungchun ; Lee, Younho ; Park, Yongsu ; Yoon, Hyunsoo
Author_Institution :
Korea Adv. Inst. of Sci. & Technol., Daejeon
fDate :
9/1/2007 12:00:00 AM
Abstract :
Zhu proposed a synchro-difference LKH scheme for secure multicast that appeared in IEEE Communications Letters, vol. 9, no. 5, pp. 477-479, May 2005, which is an enhancement of the well-known LKH scheme. In this letter, we show that Zhu´s scheme is insecure against collusion of two or more malicious adversaries by presenting two kinds of attack scenarios.
Keywords :
cryptography; multicast communication; telecommunication security; collusion attack; encryption; logical key tree; secure multicast communication; synchro-difference LKH scheme; Cryptography; Scalability; Security; Tree data structures;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2007.070325
