Table 6.

Average time cost of processing transactions

Operation on transaction	Computations	Time cost
Hospital generates a $T_{\mathrm{initialize}}^1$	1S + 7PM	212.209 ms
Hospital generates a $T_{\mathrm{initialize}}^2$	1S + 9E	83.931 ms
Hospital generates a $T_{\mathrm{initialize}}^3$	1S + 9PM	271.347 ms
Hospital generates a Trecord	1S + 14FA	5.226 ms
Insurance company generates a Tquery	1S	5.226 ms
Server generates a Trespond	1S + 5FM + 12FA + 1E + 1PM	43.543 ms
Record-node verifies a $T_{\mathrm{initialize}}^1$	1V + 5PM + 2PA	157.454 ms
Record-node verifies a $T_{\mathrm{initialize}}^2$	1V	9.137 ms
Record-node verifies a $T_{\mathrm{initialize}}^3$	1V + 15PM + 9PA	454.796 ms
Record-node verifies a Trecord	1V	9.137 ms
Record-node verifies a Tquery	1V	9.137 ms
Record-node verifies a Trespond	1V + 2PM + 10PA + 5Pairing	494.361 ms
Server verifies a $T_{\mathrm{initialize}}^2$	3D+ + 3PM	101.807 ms
Insurance company verifies a Trespond	1D + 1PM	33.936 ms
Insurance company recovers the result	4FA + 4FM	< 0.005 ms

In the table, S is a signing computation, V denotes a signature verification, PM describes a point multiplication on the ECC, PA is a point addition on the ECC, Pairing means a pairing computation, E is a encryption, D denotes a decryption, FM describes a field multiplication and FA is a field addition. For instance, “2PM + 3PA + 1V + 6Pairing” denotes that the corresponding computations contain 2 point multiplications, 3 point additions, 1 signature verification and 6 pairing computations