Spreading-Based Voice Encryption by Means of OVSF Codes
Source abstract
Abstract
This paper presents a new methodology to encrypt voice signals, in such a way that they simulate being a noise signal. The objective is to obtain a signal that does not generate suspicions about its content, while protecting the message. The process is based on the spread and scrambling of the signal through the use of OVSF (orthogonal variable spreading factor) codes. The security of the method is based mainly on the input value used for the randomization phase. From a computational cost point of view, the use of fixed-length codes allows for a shorter retrieval time compared to a similar method based on variable-length codes. Regarding the encrypted signal, its main characteristic is its high entropy (very close to the ideal value). Finally, in the recovery process, a signal identical to the original is obtained.
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Research context
OpenAlex topics: Chaos-based Image/Signal Encryption · Algorithms and Data Compression · Wireless Communication Security Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Engineering, Universidad Militar Nueva Granada, Bogotá 110111, Colombia
Computer Systems Architecture and Technology, Universidad Politecnica de Madrid, Campus de Montegancedo, Boadilla del Monte, 28660 Madrid, Spain
References (20)
Show source-provided references
1. An unconditionally secure speech scrambling scheme based on an imitation process to a gaussian noise signal
2. Talha, S.K., and Barry, B.I.A. (2013, January 26–28). Evaluating the impact of AES encryption algorithm on Voice over Internet Protocol (VoIP) systems. Proceedings of the 2013 International Conference o Computing, Electrical and Electronic Engineering (ICCEEE), Khartoum, Sudan.10.1109/ICCEEE.2013.6634023 ↗
3. Survey of Various Encryption Techniques for Audio Data
4. Knudsen, R.A.E.B.L. (1998, January 20–22). Serpent: A proposal for the advanced encryption standard. Proceedings of the First Advanced Encryption Standard (AES) Conference, Ventura, CA, USA.
5. John, J.E., Ajai, A.R., and Poornachandran, P. (2012, January 11–12). Effective Implementation of DES Algorithm for Voice Scrambling. Proceedings of the International Conference on Security in Computer Networks and Distributed Systems, Trivandrum, India.10.1007/978-3-642-34135-9_8 ↗
6. A block cipher based on a suitable use of the chaotic standard map10.1016/j.chaos.2004.11.096 ↗
7. An appropriate system for securing real-time voice communication based on ADPCM coding and chaotic maps10.1007/s11042-016-3377-3 ↗
8. Zhou, X., and Tang, X. (2011, January 22–24). Research and implementation of RSA algorithm for encryption and decryption. Proceedings of the 2011 6th International Forum on Strategic Technology, Harbin, China.
9. Audio encryption—A chaos-based data byte scrambling technique10.1504/IJASS.2018.091847 ↗
10. Audio encryption scheme by confusion and diffusion based on multi-scroll chaotic system and one-time keys10.1016/j.ijleo.2016.05.073 ↗
11. Jaillet, F., and Virette, D. (2015). Encoding of Multichannel Digital Audio Signals. (8,964,994), U.S. Patent.
12. High-uncertainty audio signal encryption based on the Collatz conjecture
13. Authenticity verification of audio signals based on fragile watermarking for audio forensics10.1016/j.eswa.2017.09.003 ↗
14. A mathematical theory of communication10.1002/j.1538-7305.1948.tb01338.x ↗
15. Entropy and uncertainty10.3390/e10040493 ↗
16. Evolutionary Algorithm for Speech Scrambling based on Asexual Reproduction
17. Wang, J. (2013). Pearson Correlation Coefficient. Encyclopedia of Systems Biology, Springer.10.1007/978-1-4419-9863-7_372 ↗
18. Chaotic encryption of speech signals10.1007/s10772-011-9103-7 ↗
19. A novel approach for speech encryption: Zaslavsky map as pseudo random number generator10.1016/j.procs.2016.07.302 ↗
20. Audio encryption based on the cosine number transform10.1007/s11042-015-2755-6 ↗