Skip to main content
SpringerLink
Log in
Book cover

International Conference on the Theory and Application of Cryptology

ASIACRYPT 1991: Advances in Cryptology — ASIACRYPT '91 pp 299–311Cite as

A secure analog speech scrambler using the discrete cosine transform

  • Conference paper
  • First Online:

  • 200 Accesses

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 739))

Abstract

A secure technique for analog speech encryption is described which uses the Discrete Cosine Transform (DCT). The paper shows how the proposed technique overcomes weaknesses identified in other analog scramblers by using transform domain permutation and the insertion of dummy transform components. It is shown that the DCT scrambler with dummy spectrum insertion offers a similar level of security to a digital scrambler on a bandlimited channel while providing better quality of recovered speech.

This is a preview of subscription content, log in via an institution.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. N. Ahmed, T. Natarajan and K. Rao, “Discrete Cosine Transform”, IEEE Trans. on Computers, 1974, pp. 90–93.

    Google Scholar 

  2. B. Atal, V. Cuperman and Gershoff (editors), Advances in Speech Coding, Kluwer Academic Press, 1990.

    Google Scholar 

  3. H. Beker and F. Piper, Secure Speech Communications, Academic Press, 1985.

    Google Scholar 

  4. E. Dawson, B. Goldburg and S. Sridharan, “The Automated Cryptanalysis of Analog Speech Scramblers” in Abstracts of EUROCRYPT 91, 1991, pp. 203–207.

    Google Scholar 

  5. R.M. Gray, “Vector Quantization”, IEEE ASSP Mag., April 1984, pp 4–29.

    Google Scholar 

  6. N. Jayant, B. McDermott, S. Christensen and A. Quinn, “A comparison of four methods for analog speech privacy”, IEEE Trans. on Communications, Vol. COM-29, No. 1, 1981, pp. 18–23.

    Article  Google Scholar 

  7. A. Matsunaga, K. Koga, M. Ohkawa, “An analog speech scrambling system using the FFT technique with high level security”, IEEE Journal in Selected Areas in Communications, vol. 7, May 1989, pp. 540–547.

    Article  Google Scholar 

  8. S.R. Quackenbush, T.P. Barnwell and M.A. Clements, Objective Measures of Speech Quality, Prentice Hall, 1988.

    Google Scholar 

  9. R.A. Rueppel, New Approaches to Stream Ciphers, PhD Thesis, Swiss Federal Institute of Technology, 1984.

    Google Scholar 

  10. K. Sakurai, T. Koga and T. Muratani, “A speech scrambler using Fast Fourier Transform Techniques”, IEEE Selected Areas in Communications, vol SAC-2, No. 3, May 1984, pp. 434–442.

    Article  Google Scholar 

  11. S. Sridharan, E. Dawson and B. Goldburg, “A Fast Fourier Transform Based Encryption System” to appear in IEE Proceedings Part I Communications, Speech and Vision.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. School of Electrical and Electronic Systems Engineering, Queensland University of Technology, GPO Box 2434, 4001, Brisbane, Queensland, Australia

    B. Goldburg

  2. School of Mathematics and Information Security Research Centre, Queensland University of Technology, GPO Box 2434, 4001, Brisbane, Queensland, Australia

    E. Dawson

  3. School of Electrical Engineering, University of Technology Sydney, 2001, Sydney, New South Wales, Australia

    S. Sridharan

Authors
  1. B. Goldburg
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. E. Dawson
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. S. Sridharan
    View author publications

    You can also search for this author in PubMed Google Scholar

Editor information

Hideki Imai Ronald L. Rivest Tsutomu Matsumoto

Rights and permissions

Reprints and permissions

Copyright information

© 1993 Springer-Verlag Berlin Heidelberg

About this paper

Cite this paper

Goldburg, B., Dawson, E., Sridharan, S. (1993). A secure analog speech scrambler using the discrete cosine transform. In: Imai, H., Rivest, R.L., Matsumoto, T. (eds) Advances in Cryptology — ASIACRYPT '91. ASIACRYPT 1991. Lecture Notes in Computer Science, vol 739. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-57332-1_25

Download citation

  • DOI: https://doi.org/10.1007/3-540-57332-1_25

  • Published:

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-57332-6

  • Online ISBN: 978-3-540-48066-2

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics

Search

Navigation