JISE


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Journal of Information Science and Engineering, Vol. 40 No. 5, pp. 1115-1138


A Partial-Filename Search Mechanism for Encrypted Filenames in a P2P Network

SHIN-YAN CHIOU1,2,3
1Department of Electrical Engineering, College of Engineering
Chang Gung University
Taoyuan, 333 Taiwan
2Department of Nuclear Medicine
Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
3Department of Neurosurgery
Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
E-mail: ansel@mail.cgu.edu.tw

The efficiency and accuracy of data search, storage, confidentiality and security of P2P systems is a serious concern. Previous studies have proposed using a partial filename search function which allows the user to input a partial filename to search for associated filenames on the remote system. However, if the file name is encrypted for enhanced se-curity, this search function is ineffective. This paper proposes a search mechanism for en-crypted filenames. In the case of filename encryption, the proposed method can also achieve a partial filename search function while maintaining filename confidentiality. The proposed system was implemented on an Android smartphone to simulate encrypted file-name search. To the best of our knowledge, this is the first work done on partial-filename search for encrypted filenames.

Keywords: encrypted filename search, partial filename search, P2P, security, confidentiality

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