The Proposed Hierarchical (k, k) VSS Scheme (Different implementation structures considering the listed)

(a) 12=2„e2„e3

(b) 12=2„e3„e2

(c) 12=3„e2„e2

needs 3 (2, 2) schemes and 4 (3, 3) schemes

needs 7 (2, 2) schemes and 2 (3, 3) schemes

needs 1 (3, 3) schemes and 9 (2, 2) schemes

k = 12 = 22 „e 3

EXAMPLE : A Three-Layer (12, 12) VSS Scheme

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