Online/Offline Ciphertext Retrieval on Resource Constrained Devices. (21st July 2016)
- Record Type:
- Journal Article
- Title:
- Online/Offline Ciphertext Retrieval on Resource Constrained Devices. (21st July 2016)
- Main Title:
- Online/Offline Ciphertext Retrieval on Resource Constrained Devices
- Authors:
- Jiang, Peng
Mu, Yi
Guo, Fuchun
Wang, Xiaofen
Wen, Qiaoyan - Abstract:
- Abstract : The ciphertext retrieval is of paramount importance for data confidentiality and utilization in mobile cloud environment. The receiver, usually equipped with resource constrained devices, retrieves data stored in the cloud server by submitting a confidential request (or trapdoor) to the cloud. Previous schemes need at least one exponentiation operation in group $\mathbb {G}$ for each keyword to generate the trapdoor, which is quite burdensome for mobile devices to support such computational cost. The computational cost of trapdoor generation limits the application of ciphertext retrieval, especially in a wireless environment. In this paper, we propose the first online/offline ciphertext retrieval (OOCR) scheme, where the trapdoor generation is split into two phases: offline phase and online phase . Most of the computation of the trapdoor could be performed in the offline phase prior to knowing the keyword. The generation of the real trapdoor with keyword can be done efficiently in the online phase. The most challenging task is to resist the so-called insider attacks, which is about keyword guessing attacks from the untrusted cloud server. We also build a novel framework to resist insider attacks and propose an OOCR scheme against insider attacks. Our semantic security proof and performance analysis demonstrate that the proposal is practical for mobile cloud applications.
- Is Part Of:
- Computer journal. Volume 59:Number 7(2016:Jul.)
- Journal:
- Computer journal
- Issue:
- Volume 59:Number 7(2016:Jul.)
- Issue Display:
- Volume 59, Issue 7 (2016)
- Year:
- 2016
- Volume:
- 59
- Issue:
- 7
- Issue Sort Value:
- 2016-0059-0007-0000
- Page Start:
- 955
- Page End:
- 969
- Publication Date:
- 2016-07-21
- Subjects:
- ciphertext retrieval -- public key encryption with keyword search -- insider attacks -- resource constrained devices -- cloud computing
Computers -- Periodicals
005.1 - Journal URLs:
- http://comjnl.oxfordjournals.org/ ↗
http://ukcatalogue.oup.com/ ↗ - DOI:
- 10.1093/comjnl/bxv099 ↗
- Languages:
- English
- ISSNs:
- 0010-4620
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3394.060000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 12387.xml