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

Algorithm7: Log signcryption.

Input:

B F, P P, M

.
Output:

C T, δ_{I o T}

1:
Set LSSS matrix $m_{e}$ by $B F$ .
2:
Randomly generate $r_{j} \in_{R} Z_{q} (\forall j \in x)$ .
3:
Generate ${\vec{v}}_{e} = [\begin{matrix} s \\ \begin{matrix} a t t_{1} \\ a t t_{2} \\ \begin{matrix} ⋮ \\ a t t_{j} \end{matrix} \end{matrix} \end{matrix}] \in_{R} Z_{q} (\forall j \in x)$ .
4:
Use $m_{e}$ and ${\vec{v}}_{e}$ to compute $λ_{e} = m_{e} {\vec{v}}_{e}$ .
5:
Use $s$ and $g$ to compute $C^{'} = g^{s}$ .
6:
Use $B$ , $r_{j}$ and $λ_{e}$ to compute $C_{j} = g^{β λ_{e}} Q_{j}^{- r_{j}} (\forall j \in x)$ .
7:
Use $r_{j}$ and $g$ to compute $D_{j} = g^{r_{j}} (\forall j \in x)$ .
8:
Compute $C = M Y^{s}$ .
9:
Compute $h = H (C)$ .
10:
Compute $σ_{C T} = h^{Y_{. x} s}$ .
11:
Perform $σ_{I o T} = E C D S A (σ_{C T}, I P_{I o T}, t_{I o T}) .$
12:
Send $C T = (σ_{C T}, C, C_{j}, C^{'}, D_{j}, m_{e}, I P_{I o T}, t_{C T}) w i t h (m_{e}, ρ (j))$ to gateway.
13:
Store $δ_{I o T} = (σ_{I o T}, I P_{I o T}, t_{I o T})$ .