Results 11 to 20 of about 8,976 (260)
IEEE Access, 2023 One of the first and most used hashing algorithms in blockchains is SHA-256 so the main aim of this paper is how to increase the security level of the blockchain based on the increasing hashing algorithm security.
Salwa M. Serag Eldin +7 more
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Mapped Tent Pitching Schemes for Hyperbolic Systems [PDF]
SIAM Journal on Scientific Computing, 2017 A spacetime domain can be progressively meshed by tent shaped objects. Numerical methods for solving hyperbolic systems using such tent meshes to advance in time have been proposed previously. Such schemes have the ability to advance in time by different amounts at different spatial locations.
Gopalakrishnan, Jay +2 more
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Designing S-Box Using Tent-Sine Chaotic System While Combining the Traits of Tent and Sine Map
IEEE Access, 2023 Secure exchange of sensitive information between different entities is a serious challenge in today’s environment. Therefore, various cryptosystems have been created specifically for this purpose. Various operations are used in these cryptosystems.
Annas Wasim Malik +4 more
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Speech encryption using chaotic shift keying for secured speech communication
EURASIP Journal on Audio, Speech, and Music Processing, 2017 This paper throws light on chaotic shift keying-based speech encryption and decryption method. In this method, the input speech signals are sampled and its values are segmented into four levels, namely L 0, L 1, L 2, and L 3. Each level of sampled values
P. Sathiyamurthi, S. Ramakrishnan
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An Effective Color Image Encryption Based on Henon Map, Tent Chaotic Map, and Orthogonal Matrices
Sensors, 2022 In the last decade, the communication of images through the internet has increased. Due to the growing demands for data transfer through images, protection of data and safe communication is very important.
Shamsa Kanwal +7 more
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Design of Discretized Tent Map
The Journal of the Korea Contents Association, 2008 To present the design procedure of discretized 8-bit tent map executing the transformation of tent function which is one of the chaotic functions, first, the truth table of discretized tent map was written, and then according to the simplified Boolean algebra equations obtained from the truth table, the discretized map is implemented with the exclusive
Seung-Jae Baek, Jin-Soo Park
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Frontiers in PhysicsTo overcome the drawbacks of the existing sinusoidal map and tent map, this paper proposes the design of a sinusoidal–tent (ST) map. The test results indicate that the new chaotic system exhibits more significant advantages in chaos control.
Ping-Ping Zeng +4 more
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A Color Image Encryption Technique Based on Bit-Level Permutation and Alternate Logistic Maps
Journal of Intelligent Systems, 2019 The paper presents an approach to encrypt the color images using bit-level permutation and alternate logistic map. The proposed method initially segregates the color image into red, green, and blue channels, transposes the segregated channels from the ...
Bisht Ankita +3 more
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A Multi-Carrier Structure for Chaos –Shift Keying
Journal of Kufa for Mathematics and Computer, 2021 The next generation of wireless communications networks needs higher data transfer rates; this requires to provide wireless communication systems operating at higher spectral efficiencies.
Salsabeel Hasan, Zahir Hussain
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Stability and expansivity of tent map
Proceedings of the American Mathematical Society, 2020 The paper is concerned with properties of stability for the (piecewise affine) tent map of the interval. The authors consider notions alternative to the topological stability. The first of them is orbit shift stability, which means that for \(C^0\)-small perturbations of a map from the tent family, the conjugacy between the shifts on the corresponding ...
Carrasco-Olivera, D. +2 more
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