Speech encryption based on the synchronization of fractional-order chaotic maps
| Autor: | Maamar Bettayeb, Said Djennoune, Sarah Kassim, Ouerdia Megherbi, Hamid Hamiche |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
business.industry
Computer science Strong key 020208 electrical & electronic engineering Chaotic Chaotic map 02 engineering and technology Observer (special relativity) Encryption Key generator 01 natural sciences Chaotic systems Robustness (computer science) 0103 physical sciences 0202 electrical engineering electronic engineering information engineering business 010301 acoustics Algorithm Computer Science::Cryptography and Security |
| Zdroj: | ISSPIT |
| Popis: | This work presents a new method of encrypting and decrypting speech based on a chaotic key generator. The proposed scheme takes advantage of the best features of chaotic systems. In the proposed method, the input speech signal is converted into an image which is ciphered by an encryption function using a chaotic key matrix generated from a fractional-order chaotic map. Based on a deadbeat observer, the exact synchronization of system used is established, and the decryption is performed. Different analysis are applied for analyzing the effectiveness of the encryption system. The obtained results confirm that the proposed system offers a higher level of security against various attacks and holds a strong key generation mechanism for satisfactory speech communication. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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