An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreams
This paper introduces an audio encryption algorithm based on permutation of audio samples using discrete modified Henon map followed by substitution operation with keystream generated from the modified Lorenz-Hyperchaotic system. In this work, the audio file is initially compressed by Fast Walsh Had...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Emerald Publishing
2023-06-01
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| Series: | Applied Computing and Informatics |
| Subjects: | |
| Online Access: | https://www.emerald.com/insight/content/doi/10.1016/j.aci.2019.10.001/full/pdf |
| _version_ | 1797796884561002496 |
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| author | F.J. Farsana V.R. Devi K. Gopakumar |
| author_facet | F.J. Farsana V.R. Devi K. Gopakumar |
| author_sort | F.J. Farsana |
| collection | DOAJ |
| description | This paper introduces an audio encryption algorithm based on permutation of audio samples using discrete modified Henon map followed by substitution operation with keystream generated from the modified Lorenz-Hyperchaotic system. In this work, the audio file is initially compressed by Fast Walsh Hadamard Transform (FWHT) for removing the residual intelligibility in the transform domain. The resulting file is then encrypted in two phases. In the first phase permutation operation is carried out using modified discrete Henon map to weaken the correlation between adjacent samples. In the second phase it utilizes modified-Lorenz hyperchaotic system for substitution operation to fill the silent periods within the speech conversation. Dynamic keystream generation mechanism is also introduced to enhance the correlation between plaintext and encrypted text. Various quality metrics analysis such as correlation, signal to noise ratio (SNR), differential attacks, spectral entropy, histogram analysis, keyspace and key sensitivity are carried out to evaluate the quality of the proposed algorithm. The simulation results and numerical analyses demonstrate that the proposed algorithm has excellent security performance and robust against various cryptographic attacks. |
| first_indexed | 2024-03-13T03:39:47Z |
| format | Article |
| id | doaj.art-bc11e4dbd206495b9790dbcefae50531 |
| institution | Directory Open Access Journal |
| issn | 2634-1964 2210-8327 |
| language | English |
| last_indexed | 2024-03-13T03:39:47Z |
| publishDate | 2023-06-01 |
| publisher | Emerald Publishing |
| record_format | Article |
| series | Applied Computing and Informatics |
| spelling | doaj.art-bc11e4dbd206495b9790dbcefae505312023-06-23T09:37:54ZengEmerald PublishingApplied Computing and Informatics2634-19642210-83272023-06-01193/423926410.1016/j.aci.2019.10.001An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreamsF.J. Farsana0V.R. Devi1K. Gopakumar2Department of Electronics and Communication, LBS Centre for Science and Technology, Kerala University, Trivandrum, IndiaDepartment of Electronics and Communication, LBS Centre for Science and Technology, Kerala University, Trivandrum, IndiaDepartment of Electronics and Communication, TKM College of Engineering, Kollam, IndiaThis paper introduces an audio encryption algorithm based on permutation of audio samples using discrete modified Henon map followed by substitution operation with keystream generated from the modified Lorenz-Hyperchaotic system. In this work, the audio file is initially compressed by Fast Walsh Hadamard Transform (FWHT) for removing the residual intelligibility in the transform domain. The resulting file is then encrypted in two phases. In the first phase permutation operation is carried out using modified discrete Henon map to weaken the correlation between adjacent samples. In the second phase it utilizes modified-Lorenz hyperchaotic system for substitution operation to fill the silent periods within the speech conversation. Dynamic keystream generation mechanism is also introduced to enhance the correlation between plaintext and encrypted text. Various quality metrics analysis such as correlation, signal to noise ratio (SNR), differential attacks, spectral entropy, histogram analysis, keyspace and key sensitivity are carried out to evaluate the quality of the proposed algorithm. The simulation results and numerical analyses demonstrate that the proposed algorithm has excellent security performance and robust against various cryptographic attacks.https://www.emerald.com/insight/content/doi/10.1016/j.aci.2019.10.001/full/pdfAudio encryptionFast Walsh Hadamard TransformModified Henon mapModified Lorenz hyperchaotic system |
| spellingShingle | F.J. Farsana V.R. Devi K. Gopakumar An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreams Applied Computing and Informatics Audio encryption Fast Walsh Hadamard Transform Modified Henon map Modified Lorenz hyperchaotic system |
| title | An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreams |
| title_full | An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreams |
| title_fullStr | An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreams |
| title_full_unstemmed | An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreams |
| title_short | An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreams |
| title_sort | audio encryption scheme based on fast walsh hadamard transform and mixed chaotic keystreams |
| topic | Audio encryption Fast Walsh Hadamard Transform Modified Henon map Modified Lorenz hyperchaotic system |
| url | https://www.emerald.com/insight/content/doi/10.1016/j.aci.2019.10.001/full/pdf |
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