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

Algorithm 6: User registration.

Input:

I D_{i}, P P, M S K

.
Output:

S K_{I D_{i}}

.

1:
Receive $I D_{i}$ from $U_{i}$ .
2:
Verify $I D_{i}$ .
3:
Choose $t_{I D_{i}} \in_{R} Z_{q}$ .
4:
Compute $K^{i} = g^{α + (β t_{I D_{i}})}$ .
5:
Compute $L^{i} = g^{t_{I D_{i}}}$ .
6:
Compute $K_{j}^{i} = Q_{j}^{t_{I D_{i}}} (\forall j \in x)$ .
7:
Send $S K_{I D_{i}} =$ ( $K^{i}, L^{i}, K_{j}^{i}$ ) to $U_{i}$ .