REPAIR: fragile watermarking for encrypted speech authentication with recovery ability

Qing Qian (), Yunhe Cui (), Hongxia Wang () and Mingsen Deng ()
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Qing Qian: Guizhou University of Finance and Economics
Yunhe Cui: Guizhou University
Hongxia Wang: Sichuan University
Mingsen Deng: Guizhou University of Finance and Economics

Telecommunication Systems: Modelling, Analysis, Design and Management, 2020, vol. 75, issue 3, No 3, 273-289

Abstract: Abstract Confidentiality and integrity are fundamental requirements when transmitting and storing data. In order to guarantee the confidentiality and integrity of speech signal, we present a novel wateRmarking scheme for Encrypted sPeech AuthenticatIon with Recovery (REPAIR) scheme. In REPAIR, an encryption algorithm is first designed based on a hyper-chaotic method to improve the confidentiality of the original speech by encryption. Subsequently, a watermark generation and embedding algorithm is proposed to generate and embed the check bits and compression bits. Afterwards, a content authentication and tampering recovery algorithm is introduced to locate and recover the tampered speech frames. Meanwhile, a speech decryption algorithm is also presented to decrypt the encrypted speech. Analysis and experimental results demonstrate that REPAIR can detect and locate synchronization attacks and de-synchronization attacks without using the auxiliary synchronous code. Additionally, REPAIR can also recover the tampered content with high quality.

Keywords: Digital speech; Authentication; Confidentiality; Integrity; Recovery; Encryption; Watermarking (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s11235-020-00684-8

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