Diseño e implementación de un nuevo algoritmo criptográfico simétrico para mensajería instantánea en un entorno web.

Abstract

The objective was the design and implementation of a new symmetric cryptographic algorithm for instant messaging in a web environment, to increase the security of information that is transmitted through insecure channels of information using cryptography. A review of the characteristics of the most used symmetric critical algorithms was made, this allowed the determination of the symmetric algorithm Advanced Encryption Standard (AES) as base algorithm according to the comparison parameters with other symmetric algorithms generating the Prototype I, this allowed the development of a new cryptographic algorithm that incorporates new functions that generated the Prototype II. In the implementation, NetBeans was used as a development environment in the desktop prototypes with which the entropy tests of the messages encrypted by each of them were performed and using Statistical R, statistical data were obtained from the tests performed for the validation of the algorithm proposed and their respective incorporation in the web prototypes applied in a chat with PostgreSQL support as a database engine. With the implementation of Prototypes I and II the comparison of the results obtained from the analysis of the characteristics of the algorithms was made and through the Cryptool device the cryptanalysis tests were carried out for the measurement and comparison of the indicators that were considered in the variables. With the application of descriptive and inferential statistics in the verification of hypotheses, it is concluded that the proposed new algorithm increased the security level by 53% when compared with the symmetric AES base algorithm because it has a greater diffusion in message encryption. The modification of the functions that the algorithm executes or the increase of new functions help to spread the message further.