Nishide et al. [6]

ANDgates on multivalues

Partially hidden

\(2^n[\Vert G_{T}\Vert +(4n+1)\Vert G\Vert ]\)

User: superpolynomial

User: \((3n+1)e\)

p

Li et al. [24]

ANDgates on multivalues

Partially hidden

\(2^n[\Vert G_{T}\Vert +8n\Vert G\Vert ]\)

User: superpolynomial

user: 4ne

p

Lai et al. [25]

ANDgates on multivalues

Partially hidden

\(2^n[\Vert G_{T}\Vert +(4n+2)\Vert G\Vert ]\)

user: superpolynomial

User: \((n+1)e\)

pqr

Cui et al. [28]

LSSS

Partially hidden

\(\Vert G_{T}\Vert +(6n+2)\Vert G\Vert\)

User: superpolynomial

User: \((6n+1)e\)

p

Ours

Treebased structure

Secret policy is fully hidden

Fog: \((2+2n_1)\Vert G\Vert\) user: \((n_2+2)\Vert G_T\Vert +(4+4n_2)\Vert G\Vert\)

Cloud: \(2(n_1+n_2+nn_2+1)e\)

Cloud: \((n_1+n_2+6)e\) User: no pairing

p
