Fig 1.
A three-layer framework of environmental monitoring.
Fig 2.
(The source of the components of Fig 2 is described in the Supporting information).
Fig 3.
Process overview.
Table 1.
Notations adopted in our paper.
Table 2.
The functions comparison.
Table 3.
Comparison of communication cost.
Table 4.
Comparison of computation cost.
Fig 4.
Time cost in encryption.
Fig 5.
Time cost in decryption.