ID-Based Public Auditing Protocol for Cloud Data Integrity Checking with Privacy-Preserving and Effective Aggregation Verification

Table 2

Required communication number.

	P1	P2	P3
Wang et al. [16]	1	1	2
Zhang et al. [17]	1	1	2
Ours	1	4	2

P1: key extraction phase, P2: tag generation phase, P3: challenge and prove phase.