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Speech Encryption Using Circulant Transformations

Manjunath, G and Anand, GV (2002) Speech Encryption Using Circulant Transformations. In: 2002 IEEE International Conference on Multimedia and Expo. ICME 2002, 26-29 August, Lausanne,Switzerland, Vol.1, 553-556.


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A new analog encryption technique using unitary circulant transformations of the sampled analog signal is proposed. This technique is less vulnerable to attack than other known schemes based on transposition (scrambling) of the signal components in the time or frequency domain. The new technique introduces primarily a phase distortion. A new distortion measure capable of quantifying phase distortion is proposed. An optimal speaker-specific key generation scheme is then developed for maximizing an objective function based on the new distortion measure.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Analog speech encryption;Key generation;Distortion measure
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 31 Jan 2006
Last Modified: 19 Sep 2010 04:23
URI: http://eprints.iisc.ac.in/id/eprint/5250

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