A Reconstruction Attack Scheme on Secure Outsourced Spatial Dataset in Vehicular Ad-Hoc Networks

Table 1

Space discretization.

Attack granularity	Index number	Records per index
10 × 10	100	1758.11
20 × 20	400	439.53
30 × 30	900	195.35
40 × 40	1600	109.88
50 × 50	2500	70.32
60 × 60	3600	48.84
70 × 70	4900	35.88
80 × 80	6400	27.47
90 × 90	8100	21.70
100 × 100	10000	17.58