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Using Granule to Search Privacy Preserving Voice in Home IoT Systems

Li, Wei and Chen, Yumin and Hu, Huosheng and Tang, Chao (2020) 'Using Granule to Search Privacy Preserving Voice in Home IoT Systems.' IEEE Access, 8. 31957 - 31969. ISSN 2169-3536

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Abstract

The Home IoT Voice System (HIVS) such as Amazon Alexa or Apple Siri can provide voice-based interfaces for people to conduct the search tasks using their voice. However, how to protect privacy is a big challenge. This paper proposes a novel personalized search scheme of encrypting voice with privacy-preserving by the granule computing technique. Firstly, Mel-Frequency Cepstrum Coefficients (MFCC) are used to extract voice features. These features are obfuscated by obfuscation function to protect them from being disclosed the server. Secondly, a series of definitions are presented, including fuzzy granule, fuzzy granule vector, ciphertext granule, operators and metrics. Thirdly, the AES method is used to encrypt voices. A scheme of searchable encrypted voice is designed by creating the fuzzy granule of obfuscation features of voices and the ciphertext granule of the voice. The experiments are conducted on corpus including English, Chinese and Arabic. The results show the feasibility and good performance of the proposed scheme.

Item Type: Article
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 08 Sep 2020 15:48
Last Modified: 08 Sep 2020 16:15
URI: http://repository.essex.ac.uk/id/eprint/27633

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