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The Journal of The Korea Institute of Intelligent Transport Systems Vol.10 No.1 pp.84-90

텔레매틱스 환경에서 화자인증을 이용한VoIP기반 음성 보안통신

김형국,신동

VoIP-Based Voice Secure Telecommunication Using Speaker Authentication in Telematics Environments

Hyoung-Gook Kim,Dong Shin

Abstract

In this paper, a VoIP-based voice secure telecommunication technology using the text-independent speaker authentication in the telematics environments is proposed. For the secure telecommunication, the sender's voice packets are encrypted by the public-key generated from the speaker's voice information and submitted to the receiver. It is constructed to resist against the man-in-the middle attack. At the receiver side, voice features extracted from the received voice packets are compared with the reference voice-key received from the sender side for the speaker authentication. To improve the accuracy of text-independent speaker authentication, Gaussian Mixture Model(GMM)-supervectors are applied to Support Vector Machine (SVM) kernel using Bayesian information criterion (BIC) and Mahalanobis distance (MD).
Text-independent speaker verification,bayesian information criterion,Mahalanobis distance,public-Keyinfrastructure,diffie-hellman algorithm