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Symmetric Key Encryption With Many Secret Keys

Sudeva Vijaya Kumar

Annals of Computer Science and Information Systems

2017

Vol. 10

335--339

One of the essential practices in the field of secured communication between two people is Cryptography. It confirms features like availability, authenticity, integrity and confidentiality of information. Also it enhances the mechanism of data security. For the purpose of encryption and decryption, in cryptography we have symmetric and asymmetric cryptography. Out of these, symmetric is the simplest and used widely due to its speed and feasibility in decrypting bulk messages, and requirement of limited computer resources. Symmetric key technique uses one secret key for cryptography, which opens the door for different kinds of security attacks. Through this paper I would like to introduce a Novel Symmetric key encryption and decryption using multiple secret keys. Here in this approach I am using different secret keys to encrypt different original texts.

Analysis of the arm spacing effect on symmetric and asymmetric Y-shape optical power splitters: plasmonic interactions between gold nanorings

Ahmadivand A.

Optica Applicata

2014

Vol. 44, nr 1

123--133

In this paper, we investigated specific properties and features of several kinds of Y-splitters based on gold nanorings arrays which are surrounded by SiO2 host substance, to be used at C-band spectrum (λ ~ 1550 nm). The comparison between two kinds of splitters shows that the symmetric splitter demonstrates better performance than the asymmetric splitter at given wavelength with high efficiency and transmittance (power ratio). Calculations proved that the transmitted power percentage was approximately ~47.5% in the well-organized splitter. It is shown that the offset distance plays an important role in the quality of the optical energy division and transmission through the plasmonic waveguide. The influence of increasing and decreasing in the offset distance was demonstrated numerically by snapshots. Hence, choosing and determining the appropriate value for the offset distance lead to the structure with lower losses and higher percentage in energy transmission. Ultimately, the optical behavior of an asymmetric nanostructure with unequal distances between the arms and the main array is investigated and its applications and possible purposes are introduced.