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

<table class="fixed-width table-group" id="tab3"><tr><td><table class="table"><colgroup><col style="width:7.51em"/><col style="width:4.04em"/><col style="width:10.83em"/><col style="width:7.33em"/><col style="width:6.93em"/></colgroup><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center"> P1 </td><td class="align_center"> P2 </td><td class="align_center"> P3 </td><td class="align_center"> P4 </td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Zhang et al. [<a href="/journals/scn/2018/3205898/#B17" target="_blank">17</a>]</td><td class="align_center">2H+2S</td><td class="align_center">4nH+6nS+3nB+ nE</td><td class="align_center">|I|H+2|I|S+|I|E</td><td class="align_center">|I|H+2|I|S+3B</td></tr><tr><td class="align_left" colspan="5"><hr/></td></tr><tr><td class="align_left">Ours</td><td class="align_center"> H+S</td><td class="align_center">(4n+7)H+(5n+12)S+11B</td><td class="align_center">|I|H +|I|S+|I|E</td><td class="align_center">|I|S+3B</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><div>P1: key extraction phase, P2: block tag generation phase, P3: prove phase, P4: verify phase; E: exponential operation and its time cost, S: scalar multiplication and its time cost, H: hash computation and its time cost, B: bilinear pairing and its time cost.<br/></div></td></tr></table>

<div>Comparison of computation costs.</div>

Security and Communication Networks

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Table 3

Table 3: ID-Based Public Auditing Protocol for Cloud Data Integrity Checking with Privacy-Preserving and Effective Aggregation Verification 