A Speech Encryption based on Chaotic Maps

Saad, Saad Najim Al; Hato, Eman

doi:10.5120/16203-5488

Cited by 21 publications

(5 citation statements)

References 7 publications

(4 reference statements)

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“…Chaos-based algorithms [19]- [23] uses chaotic maps such as logistic maps, Lorenz maps, Baker maps, and Chen maps to generate random numbers to be suitable for cryptographic needs. Some of the one and two-dimensional chaotic cryptosystems found in [14], [15], [23] are promising generators for their suitability for cryptographic applications.…”

Section: Literature Surveymentioning

confidence: 99%

Randomness properties of sequence generated using logistic map with novel permutation and substitution techniques

Saraswathy

Ramesh

2023

IJECE

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In this paper, a design of a chaos-based keystream generator (KSG) using a novel permutation technique with various two-dimensional patterns and a substitution technique with Z4 mapping is proposed. Initially, a chaotic function such as a logistic map is used to generate a pseudo-random number. Then these numbers are converted into binary sequences using binary mapping. In order to achieve statistical properties of the resultant binary sequences, a novel method of KSG is developed by considering parameters such as initial value “x0”, system parameter “r”, novel permutation techniques defined by 2-dimensional patterns, and substitution technique defined over Z4 transformation. The binary sequences so obtained are subjected to randomness tests by applying the National Institute of Standards and Technology (NIST) SP-800-22 (Revision 1a) test suite for investigation of its randomness properties to obtain suitable sequences which can be used as a key for cryptographic applications. From the results obtained, it is found that the binary sequences exhibit better randomness properties as per the cryptographic requirements.

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Section: Literature Surveymentioning

confidence: 99%

Randomness properties of sequence generated using logistic map with novel permutation and substitution techniques

Saraswathy

Ramesh

2023

IJECE

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“…The size of the key space generated from this audio encryption algorithm is It can be concluded that this algorithm is robust in resisting brute force attacks compared to other algorithms (Table 4) because it has the largest key space size. Chaotic Maps Key Space Multi-scrolling -SHA 256-bit [8] 2D cosine number transform [9] 2D tent map and two Chebyshev polynomials [10] Continuation of Table 4 Circle map and modified rotation equation [11] Logistic map [12] Single NCQM [13] Double NCQM [13] 3D Lorenz -Logistic map [14] Double scrolling -SHA 256-bit (proposed)…”

Section: Key Space and Sensitivity Analysismentioning

confidence: 99%

“…Algorithm with another scheme uses a 2D tent map and two Chebyshev polynomials, which form a key space of [10]. Another article offers a circle map scheme and a modified rotation equation that produces a key space of [11], and there is an audio encryption algorithm using a logistic map with a key space of up to [12], a normalized complex quadratic map (NCQM), which produces a key space of (single NCQM) and (double NCQM) [13], and a 3D Lorenz-Logistic map with a key space formed reaching [14]. Moreover, Abdul Kadhim et al [15] proposed audio steganography with 4D grid multiwing hyper-chaotic system and introduced a speech encryption algorithm based on the Lorenz chaotic map [16]; a new speech encryption algorithm based on a dual shuffling Hénon chaotic map [17] uses a chaotic elliptic map [18].…”

Section: Introductionmentioning

confidence: 99%

Digital Audio Protection with Confusion and Diffusion Scheme Using Double-Scroll Chaotic Function

2023

Journal of Hunan University Natural Sciences

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This article describes a new idea for protecting digital audio with a confusion and diffusion scheme based on the modification of the double-scroll function and SHA-256 function. In the first scheme, the confusion process is carried out by scrambling dual channels of plain audio using the keystream of the double-scroll function in the form of the proposed new nonlinear transformation function. The initial value of the double scroll function is obtained through the SHA-256 function. In the next scheme, the diffusion process is carried out by substituting the value of the dual channels based on the nonlinear transformation function, resulting in cipher audio. The proposed algorithm based on this new idea produces a very large key space of . This means that this algorithm is highly robust to brute force attacks. Simulation of the algorithm based on the test data used produces a histogram of uniformly distributed cipher audio, and the correlation coefficient is negligible (toward zero), which can be interpreted as uncorrelated. This means that this digital audio encryption algorithm is highly resistant to statistical attacks. Another performance resulting from the algorithm in this article is that it is excellent for doing cipher and decrypted audio with reference to the PSNR value of the cipher audio being negligible (4.66037-5.04020 dB), and the PSNR value of the decrypted audio is much greater (69.28398-81.14115 dB).

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“…Analog audio cipher has four main types, they are: Since 2014 researchers tried to present different algorithms for encryption analog audio data. In 2014, Saad Najim et al [31] presented multilevel speech encryption algorithm based totally on confusion and diffusion properties. They used three keys (key1, key2 and mask key) for permutation and substitution operations.…”

Section: Analog Audio Encryption Algorithmsmentioning

confidence: 99%

A Review on Audio Encryption Algorithms Using Chaos Maps-Based Techniques

Albahrani

Alshekly²,

Lafta

2021

JCSANDM

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Due to the quick improvement in digital communications and multimedia applications during recent periods up to the current time, data protection of digital data such as image, audio and video becomes a significant challenge. The security of audio data that transfer through different networks was rated as a preferred research field in the preceding years. This review covers the recent contribution for audio encryption and gives the most evaluations for audio encryption algorithm involving security analysis, computational complexity and quality analysis and their requirements. This paper fundamentally concentrates on displaying the different types of audio encryption and decryption techniques based on chaotic maps. Digital and analog audio algorithms were displayed, discussed and compared with the illustration of the important features and drawbacks. Various digital and audio proposed projects for audio encryption using chaotic maps have been covered, which they showed extreme sensitivity to initial conditions, unpredictability and conducting in a quasi-random manner. A comparison among the proposed algorithms in the key space, chaotic maps sensitivity and statistical analysis were provided.

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A Speech Encryption based on Chaotic Maps

Cited by 21 publications

References 7 publications

Randomness properties of sequence generated using logistic map with novel permutation and substitution techniques

Randomness properties of sequence generated using logistic map with novel permutation and substitution techniques

Digital Audio Protection with Confusion and Diffusion Scheme Using Double-Scroll Chaotic Function

A Review on Audio Encryption Algorithms Using Chaos Maps-Based Techniques

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