Mca project topics-Code Shoppy
To denote an exact form of decoupling software modules in object-oriented programming the dependency inversion principle is used. By using this principle, the conventional dependency relationships known from high-level, policy-setting modules to low-level, dependency modules are reversed which results in description high-level modules autonomous of the low-level module implementation details. In conventional application architecture, lower-level components are planned to be inspired by higher-level components which allow increasingly complex systems to be built. Designing of the software engineering principles significantly decrease the software complexity on application projects. As a result, object oriented based architecture is planned on giving quality-conscious software services including the minimal development cost with increased reusability of the code. In this work, higher-level components depend directly upon lower-level components in order to attain some task which limits the reprocess opportunities of the higher-level components.android app ideas for students college project
In recent years, with the unprecedented advancement in technology and aggressive expansion in internet usage, the amount of data generated and its distribution over various networks has increased remarkably. As the number of people using the internet has passed four billion marks in 2018, it is obvious to observe a surge in both the generation and the distribution of multimedia data, especially digital images. However, the security, integrity, and authenticity of this huge amount of digital data have become a crucial challenge for both the users as well as the organizations dealing with it. In particular, sensitive information like confidential military and medical images are at high risk of being intercepted by intruders. To meet these security challenges, development of robust cryptographic schemes is quite essential. These schemes help secure communication of data between the sender and the authorized receivers having common security keys. Apart from the security aspects, high computational speed is also a desirable criterion for an efficient cryptosystem to be incorporated with a real-time communication.android mini project topics
Chaotic maps are one of the most promising dynamical systems to design cryptosystems because the discrete dynamic chaotic maps have an inherent property of hiding relationship between initial and final states . This unpredictable nature of chaotic map components makes it more suitable for constructing image cryptosystems. Confusion and diffusion are two basic and important phases of a chaos-based system. Confusion withholds any correspondence between the key and the ciphertext, and it is usually achieved by permutation of pixels using chaotic maps without making any changes in the pixel values. Diffusion, on the other hand, ensures that changing any pixel in the original image leads to the change in multiple pixels of the cipher image. Owing to its significant relevance in the design of image cryptosystems, researchers have proposed many variants and improved algorithms to encrypt digital images using chaotic maps including . In chaos-based image encryption, many confusion and diffusion techniques are reported in the literature such as DNA-based encryption dynamic random growth technique , non-adjacent coupled map lattices system etc. A new image encryption algorithm called the Tent-Logistic map-based Data Encryption Algorithm (DEALT) is reported in It adopts the substitution-permutation network that operates on the pixels, under two rounds. Firstly, the image is decomposed into fixed-length data blocks. Then, substitution and permutation processes are carried out on these blocks using the Tent-Logistic map.
The main contributions of this paper are the followings. First, to the best of our knowledge, no previous study has taken advantage of the fourth order 1D MCA to improve the efficiency of the classic diffusion-confusion architecture (i.e., the bit-wise XOR operation and the pixel-wise random permutation). Computer simulations show that the proposed combination CA–chaos, compared to a set of recently published works, gives competitive performances with a lower level of complexity. Second, the secret key (i.e., the initial condition and the control parameter) of the 1D chaotic map are generated using the 256-bit long hash value of the original image, this reliance boosted the sensitivity to minor changes in the original image or the initial keys, and then insured a high immunity to known/chosen plaintext attacks. Third, the time complexity of the proposed encryption scheme is significantly reduced as it employed a one-dimensional map instead of higher-dimensional ones and one iteration of the fourth order 1D MCA.latest mca project topics 2018
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