Two-Factor Data Security Protection Mechanism for Cloud Storage System

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Joseph K. Liu
  • Kaitai Liang
  • Willy Susilo
  • Jianghua Liu
  • Yang Xiang

Research units

  • Monash University
  • University of Wollongong
  • Fujian Normal University
  • Deakin University

Abstract

In this paper, we propose a two-factor data security protection mechanism with factor revocability for cloud storage system. Our system allows a sender to send an encrypted message to a receiver through a cloud storage server. The sender only needs to know the identity of the receiver but no other information (such as its public key or its certificate). The receiver needs to possess two things in order to decrypt the ciphertext. The first thing is his/her secret key stored in the computer. The second thing is a unique personal security device which connects to the computer. It is impossible to decrypt the ciphertext without either piece. More importantly, once the security device is stolen or lost, this device is revoked. It cannot be used to decrypt any ciphertext. This can be done by the cloud server which will immediately execute some algorithms to change the existing ciphertext to be un-decryptable by this device. This process is completely transparent to the sender. Furthermore, the cloud server cannot decrypt any ciphertext at any time. The security and efficiency analysis show that our system is not only secure but also practical.

Details

Original languageEnglish
Article number7173024
Pages (from-to)1992-2004
Number of pages13
JournalIEEE Transactions on Computers
Volume65
Issue number6
Publication statusPublished - 1 Jun 2016
MoE publication typeA1 Journal article-refereed

    Research areas

  • cloud storage, factor revocability, security, Two-factor

ID: 4459132