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Many attempts have been made to reduce the number of re keying messages in group key management by optimizing the tree structure for logical key hierarchy (LKH) (X.S. Li et al., 2001), (W.T. Zhu, 2005). Contrary to the conventional assumption of complete alpha-ary trees, we investigate in this paper into more general tree structures called complete level-homogeneous trees. Specifically, we derive...
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