Title:
Message Authentication PPMG:
Preprocessing Phase for MAC Generation Algorithm
Abstract: In this paper, we propose an algorithm
that consists of two phases. The first phase is the preprocessing phase where
our proposed work is based on. The second phase is a cipher block chaining
(CBC) which is a general model used to produce a MAC value. The preprocessing
phase is an important one which is developed to modify the text message before
starting the cipher block chaining phase to produce the MAC value, it is
consisted of several steps discussed later, it modifies the text message
length and the value (ASCII Code) of each character in the text, the modification
is based on text, so any changes to the text leads to a new modification.
Preprocessing phase is important because it achieves the paper objective,
which is to prevent the existence of two messages having the same MAC value.
Author: Ala Eddin Ismail, Jabr Asim Elsheikh,
and Abdullah Abdali Rashed