An algorithm for constructing S-boxes for block symmetric encryption

A New Approach into Constructing S-boxes for Lightweight Block Ciphers

In this paper we can give an overview of some of the popular block ciphers, rather a strong focus is put on the construction of their S-boxes. While we were studding S-boxes we saw that there is a room for improvement. The focus is on putting quasigroups of order 4 with good cryptographic properties and their ! and " # transformations, in order to achieve also small bit S-boxes.

AN ALGORITHM FOR FINDING THE EIGENPAIRS OF A SYMMETRIC MATRIX

The purpose of this paper is to show that ideas and techniques of the homotopy continuation method can be used to find the complete set of eigenpairs of a symmetric matrix. The homotopy defined by Chow, Mallet- Paret and York [I] may be used to solve this problem with 2""-n curves diverging to infinity which for large n causes a great inefficiency. M. Chu 121 introduced a homotopy equation...

Constructing S-boxes for Lightweight Cryptography with Feistel Structure

Strenthening Hash Functions using Block Symmetric Key Encryption Algorithm

With the requirement of high speed network protocols, fast message integrity and authentication services are at the top most priority. Currently many integrity techniques, that involve hashing, are being used and developed, but almost every technique faces one or other attack or any other security or performance related issue. The chief problem being faced is the forgery of hash value, being tr...

Lightweight Symmetric Encryption Algorithm for Secure Database

Virtually all of today’s organizations store their data in huge databases to retrieve, manipulate and share them in an efficient way. Due to the popularity of databases for storing important and critical data, they are becoming subject to an overwhelming range of threats, such as unauthorized access. Such a threat can result in severe financial or privacy problems, as well as other corruptions....