The Improved Hierarchical (k, k) VSS Scheme (Four-Layer (15,15) VSS Scheme Using the Improved Method )

EXAMPLE : Since 15≦24, thus we can use 24-1=15 (2, 2) schemes to construct a (16, 16) VSS scheme, and the share size is 24=16. Then using the idea of the above theorem, we can get a (15, 15) scheme with share size 16.

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Layer 4 :

(2, 2) scheme

Layer 3 :

(2, 2) scheme

Layer 2 :

(2, 2) scheme

Layer 2 :

(2, 2) scheme

S 1 S 2 S 3 S 4 S 5 S 6 S 7 S 8 S 9 S 10 S 11 S 12 S 13 S 14 S 15 S16

S' 1 S' 2 S' 3 S' 4 S' 5 S' 6 S' 7 S' 8 S' 9 S' 10 S' 11 S' 12 S' 13 S' 14 S' 15

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