Utilização de matriz na criptografia

Abstract

Dealing with information security has always been and still is a challenge. From the old age means were used, although rustic for our time, so that the messages sent even intercepted were not deciphered. In this way of "hiding" the meaning of the words we call cryptography that can be done in several ways. This work of qualitative bibliographic research aims to demonstrate the relationship that can be established between the study of matrices with the cryptography so we will talk about the history of cryptography, we will define some types of matrices as square matrix, identity matrix and inverse matrix that will be used in our problem situation. We will demonstrate step by step how to encode and decode a message using a pre-established matrix, this will be possible using an array called the encoder associated with its inverse matrix called the decoding matrix. The teacher in relating the teaching of matrices with the coding of messages facilitates the understanding of the student who has the opportunity to associate the content with something practical.