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Lightweight block cipher algorithms are vital for constrained environment. Substitution box (S-box) is the essential constituent of many lightweight block cipher algorithms and it is the only nonlinear part. It is proficient to create confusion in the plaintext during the process of encryption. In this research, a new way of key dependent S-box is proposed by choosing one S-box out of 16 good S-boxes...
This paper reports on qualitative findings that have been obtained from a study about mobile phone usage by Malaysian older people. The information has been classified into various categories such as usage, difficulties encountered with the physical interface of the mobile phone, functions complexity, cost, language related issues, ideal phone and etc. In this study, two similar experiments were carried...
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