Frequency Speech Scrambler Based on the Hartley Transform and the Insertion of Random Frequency Components
Francisco Assis de Oliveira Nascimento, Ricardo Alves Toscano · The International Journal of Forensic Computer Science · 2012
Applications at the tactical level of security in analog voice channel communications have been established as a topic of interest in relation to the activities of not only the armed forces on our borders but also of the federal and civil police in several regions of our country. This paper presents a voice cryptography system based on a scrambler that lends itself to this purpose, providing: significant resistance to the breach of information, the ability to reconfigure internal modules and encryption algorithms, and a low cost product.