A Blockchain-Assisted Electronic Medical Records by Using Proxy Reencryption and Multisignature

Table 6

Phased time costs when n = 3 (ms).

Phases	Security levels
	Level 1	Level 2	Level 3
Initialization	62.78	280.17	704.80
Group key generation	83.30	405.80	905.90
Diagnose	296.60	1366.90	2220.30
Data storage	30.10	167.14	307.40
Data sharing	193.30	971.50	2125.50