Enabling Fast Public Auditing and Data Dynamics in Cloud Services

Changhee Hahn, Hyunsoo Kwon, Daeyeong Kim, Junbeom Hur

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Public auditing enables efficient integrity checks of data assigned to cloud servers. In this article, we revisit the public auditing for encrypted data, in which a major concern is how to effectively support data dynamics, i.e., data modification, insertion, and deletion. We first determine which factor in existing auditing schemes most limits data dynamics from a cost perspective. We then propose a novel public auditing scheme that provides data dynamics that are orders of magnitude faster than previous methods. Our auditing challenge-response protocol reduces the computation cost of the third-party auditor (TPA) significantly, thus increasing the verification speed for the auditing results. Performance and security analysis demonstrates that the proposed scheme generates minimal computation costs while guaranteeing data integrity and privacy against an untrusted cloud.

Original languageEnglish
Pages (from-to)2047-2059
Number of pages13
JournalIEEE Transactions on Services Computing
Issue number4
Publication statusPublished - 2022

Bibliographical note

Publisher Copyright:
© 2022 IEEE.


  • Public auditing
  • cloud computing
  • data dynamics
  • data integrity
  • security

ASJC Scopus subject areas

  • Hardware and Architecture
  • Computer Science Applications
  • Computer Networks and Communications
  • Information Systems and Management


Dive into the research topics of 'Enabling Fast Public Auditing and Data Dynamics in Cloud Services'. Together they form a unique fingerprint.

Cite this