Summary form only given. In 1985 a powerful and practical public-key scheme was produced by ElGamal; his work was applied using large prime integers. El-Kassar et al. and El-Kassar and Haraty modified the ElGamal public-key ...

A digital signature is a mechanism designed to allow secure communication through an insecure medium and can be traced in many applications where privacy is required. A digital signature is an electronic signature that can ...

In this paper, we examine the continuous review inventory model under permissible delays in payments. That is, a retailer has the option of either paying for the goods immediately upon the receipt of the order or delay the ...

Let T be a set of n distinct positive integers, x1, x2, ..., xn. The n×n matrix [T] having (xi , xj), the greatest common divisor of xi and xj , as its (i,j)-entry is called the greatest common divisor (GCD) matrix ...

The purpose of this paper is to extend the RSA public-key encryption scheme from its classical domain of natural integers Z, to two principal ideal domains, namely the domain of Gaussian integers, Z[i], and the domain of ...