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Design and implementation of a new symmetric cryptographic algorithm for instant messaging in a web environment

Abstract:

The present investigation allows the design and implementation of a new symmetric cryptographic algorithm for instant messaging in a web environment, in order to increase the security of information, using cryptography. The base cryptographic algorithm was the AES (Advanced Encryption Standard), selected according to the parameters of comparison with other symmetric algorithms generating the Prototype I, this allowed the development of a new cryptographic algorithm that incorporates new functions that generate the Prototype II. The software used was Netbeans as IDE of Java development of the desktop prototypes with which entropy tests were performed on the messages encrypted by each of them and using R Stadistical, statistical data were obtained from the tests carried out for the validation of the proposed algorithm and its respective incorporation in 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 tool the cryptanalysis tests were performed for the measurement and comparison of the indicators that were considered in variables. With the application of descriptive and inferential statistics in the verification of the hypothesis, it is concluded that the proposed new algorithm increased the security level by 53% when compared to the symmetric AES base algorithm because it has a greater diffusion in message encryption.