Fontecha-Moreno, G. and Vacca-Díaz, E. 2020. Study of the theory of numbers applied to some cryptographic methods using TIC. Electronic Journal of Knowledge, Knowledge and Practices. 3, 1 (Dec. 2020), 49-71. DOI:https://doi.org/https://doi.org/10.5377/recsp.v3i1.9771.