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CloudS: A Multi-cloud Storage System with Multi-level Security

  • Lu Shen
  • Shifang Feng
  • Jinjin Sun
  • Zhongwei Li
  • Gang WangEmail author
  • Xiaoguang LiuEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9530)

Abstract

With the increase of data quantity, people have begun to attach importance to cloud storage, however, traditional single cloud can’t ensure the privacy of users’ data to a certain extent. To solve the security issue, we present a multi-cloud storage system called CloudS which spreads data over multiple cloud storage servers by using a new kind of XOR-based non-systematic erasure codes - Privacy Protecting Codes (PPC). For better user experiences and tradeoffs between security and performance, CloudS provides multiple levels of security by a variety of combinations of compression, encryption and coding schemes. In addition, we also put forward a novel Parallel Cyclic Encryption (PCE) scheme to achieve random secret key protection which attains high security and performance. We implement CloudS as a web application which doesn’t require users to perform complicated operations on local.

Keywords

Multi-cloud Multi-level security Erasure code Encryption Key management 

Notes

Acknowledgments

This work is partially supported by NSF of China (grant numbers: 61373018, 11301288), Program for New Century Excellent Talents in University (grant number: NCET130301) and the Fundamental Research Funds for the Central Universities (grant number: 65141021).

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Nankai-Baidu Joint Lab, College of Computer and Control Engineering and College of SoftwareNankai UniversityTianjinChina

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