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Analysis of Data Encryption Mechanisms for Searchable Encryption

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2013, 18(9), pp.79-89
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

손정갑 1 양유진 2 Heekuck Oh 1 Sangjin Kim 3

1한양대학교
2한국기술교육대학교 컴퓨터공학부
3한국기술교육대학교

Accredited

ABSTRACT

Recently, the need for outsourcing sensitive data has grown due to the wide spreading of cost-effective and flexible cloud service. However, there is a fundamental concern in using such service since users have to trust external servers. Therefore, searchable encryption can be a very valuable tool to meet the security requirements of data outsourcing. However, most of work on searchable encryption focus only on privacy preserving search function and relatively lacks research on encryption mechanism used to actually encrypt data. Without a suitable latter mechanism, searchable encryption cannot be deployed in real world cloud services. In this paper,we analyze previously used and possible data encryption mechanisms for multi-user searchable encryption system and discuss their pros and cons. Our results show that readily available tools such as broadcast encryption, attribute-based encryption, and proxy re-encryption do not provide suitable solutions. The main problem with existing tools is that they may require separate fully trusted servers and the difficulty in preventing collusion attacks between outsiders and semi-trusted servers.

Citation status

* References for papers published after 2022 are currently being built.

This paper was written with support from the National Research Foundation of Korea.