01592nas a2200217   4500000000100000000000100001008004100002260001200043653001300055653001700068653002300085100002500108700002000133700001900153245005600172856009900228300001000327490000600337520101700343022001401360       2019                            d  c12/201910aSecurity10aCryptography10aGenetic Algorithms1 aJefferson Rodríguez1 aBrayan Corredor1 aCésar Suárez00aGenetic Operators Applied to Symmetric Cryptography  uhttps://www.ijimai.org/journal/sites/default/files/files/2019/07/ijimai20195_7_4_pdf_53926.pdf  a39-490 v53 aIn this article, a symmetric-key cryptographic algorithm for text is proposed, which applies Genetic Algorithms philosophy, entropy and modular arithmetic. An experimental methodology is used over a deterministic system, which redistributes and modifies the parameters and phases of the genetic algorithm that directly affect its behavior, carrying out a constant evaluation using the fitness function, in order to optimize the results. An independent encryption is established for the auxiliary key, using a main key, in charge of increasing security. The tests are performed over different text sizes, manipulating the parameters and criteria proposed to obtain their appropriate values. Finally, a comparison is presented against the following cryptographic algorithms DES (Data Encryption Standard), RSA (Rivest, Shamir and Adleman) and AES (Advanced Encryption Standard), exposing factors such as processing time, scalability, key size, etc. It is shown that the proposed algorithm has a better performance.  a1989-1660