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With the fast evolution of the networks technology, the security becomes an important research axis. Many types of communication require the transmission of digital images. This transmission must be safe especially in applications that require a fairly high level of security such as military applications, spying, radars, and biometrics applications. Mechanisms for authentication, confidentiality,...
This paper proposes a novel confusion and diffusion algorithm for image encryption based on logistic map and cheat image. We choose the initial condition and control parameter of logistic map as the secret key. The cheat image selected from the most common images in public network, together with the chaotic matrices generated by logistic maps, is employed both in encryption and decryption processes...
In this paper, a novel image encryption scheme is proposed based on combination of pixel shuffling and A5/1. Due to sensitivity to initial conditions, chaotic maps have a good potential for designing dynamic permutation map. So a chaotic Henon and baker's map is used to generate permutation matrix. An external secret key is used to derive the initial conditions for the chaotic map. Pixel shuffling...
In this work, we propose a color image encryption of variable sizes using logistic chaotic map. We considered a process of permutation, followed by a diffusion algorithm. To evaluate this encryption method's performance, we applied a statistical analysis, and developed histograms of the original and encrypted images. For the correlation analysis, we evaluate the behavior of two adjacent pixels on...
Due to the unlimited growth of Internet and communication technologies, the extensive use of images in diverse areas such as medical, military, science, engineering, art, entertainment, advertising, education has become unavoidable. With the increasing use of digital techniques for transmitting and storing images, the fundamental issue of protecting the confidentiality, integrity as well as the authenticity...
Cryptography is an important technique to keep private data secretly in order to avoid unauthorized access. Traditional encryption methods such as DES, RSA etc... are widely used today and it seems to be computationally secure. Chaotic encryption is the new direction of cryptography and only few papers discuss on it, and it makes use of chaotic system properties such as sensitive to initial condition...
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