Speech Encryption Based on Wavelet Transformation and Chaotic Map

التفاصيل البيبلوغرافية
العنوان:	Speech Encryption Based on Wavelet Transformation and Chaotic Map
المؤلفون:	Hala B.Abdul Wahab, Sundus I. Mahdi
المصدر:	Engineering and Technology Journal, Vol 34, Iss 5B, Pp 721-729 (2016)
بيانات النشر:	Unviversity of Technology- Iraq, 2016.
سنة النشر:	2016
المجموعة:	LCC:Science LCC:Technology
مصطلحات موضوعية:	speech encryption, chaotic map, block shuffling, residual intelligibility, transform domain, Science, Technology
الوصف:	In this paper a new algorithm is presented for speech encryption. It includes dividing the speech signal into overlapped blocks then shuffling those blocks in the time domain. A second permutation is done for the coefficients of the block which generated from wavelet transform by using chaotic key based on Hénon map, and partially encrypting the shuffled online speech signal in a transform domain. The security for the proposed system will depend on different parameters, including secret block sizes, the amount for overlapping along the x-axes and y-axes, permutation key and dynamic encrypted key. By having a new level of security the eavesdropper has to choose the amount of overlapping correctly. Many online speech signal tests demonstrate the validity of the proposed algorithm. The results show that it provides secure approach to real-time speech encryption and at the same time gives high intelligibility for the recovered speech.
نوع الوثيقة:	article
وصف الملف:	electronic resource
اللغة:	English
تدمد:	1681-6900 2412-0758
Relation:	https://etj.uotechnology.edu.iq/article_124062_c32546a9ec2e28657ab03f188bd629cd.pdf; https://doaj.org/toc/1681-6900; https://doaj.org/toc/2412-0758
DOI:	10.30684/etj.34.5B.12
URL الوصول:	https://doaj.org/article/c1a221e9b4b9486282c51d7dd30fb4d6
رقم الانضمام:	edsdoj.1a221e9b4b9486282c51d7dd30fb4d6
قاعدة البيانات:	Directory of Open Access Journals

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الوصف
تدمد:	16816900 24120758
DOI:	10.30684/etj.34.5B.12