An Autonomous Log Storage Management Protocol with Blockchain Mechanism and Access Control for the Internet of Things

. 2020 Nov 12;20(22):6471. doi: 10.3390/s20226471

Algorithm 1: System initialization.

Input:

I n i t i a l p a r a m e t e r s

.
Output:

P P

M S K

1:
Select a big number $q$ , and determine the elliptic curve: $E : y^{2} = x^{3} + a x + b m o d q$ .
2:
Generate a cyclic group $G_{1}$ and bilinear map $e : G_{1} \times G_{1} \to G_{T}$ .
3:
Set $g$ as the generator of $G_{1}$ .
4:
Determine system attribute set $u_{s} = {a t t_{1}, a t t_{2}, \dots, a t t_{x}}$ .
5:
Select ${Q_{1}, Q_{2}, \dots, Q_{x}} \in_{R} G_{1}$ , based on attribute $u_{s}$ .
6:
Choose a secure one-way hash function $H : {0, 1}^{*} \in G_{1}$ .
7:
Randomly select $α, β \in_{R} Z_{q}$ .
8:
Compute $B = g^{β}$ .
9:
Compute public key $Y = e {(g, g)}^{α}$ .
10:
Generate $P P = (g, B, Y, H, Q_{x}, e, G_{1}, G_{T})$ and $M S K = (α, β, u_{s})$ .