PrivCrowd: A Secure Blockchain-Based Crowdsourcing Framework with Fine-Grained Worker Selection

Table 3

Time costs (in seconds) of algorithms of the FEforIP.

d	FE.Setup	FE.Enc	FE.KeyGen	FE.Dec
1	0.435	0.138	0.161	0.187
2	0.496	0.191	0.246	0.261
3	0.534	0.235	0.35	0.336
4	0.589	0.288	0.442	0.396
5	0.664	0.339	0.437	0.467
6	0.743	0.394	0.537	0.529
7	0.736	0.446	0.635	0.616
8	0.77	0.477	0.675	0.621
9	0.884	0.493	0.736	0.745
10	0.922	0.551	0.87	0.827
100	5.312	4.897	7.367	7.283
500	24.658	24.358	40.891	39.912
1000	48.64	47.797	72.211	69.047