Possible dialogues between power, mathematics and cryptography

In this text we discuss how power, mathematics and cryptography establish dialogues that are considered critical for the present, but which have influence from past concerns future. We contextualize our reflections a historical perspective, especially in Brazilian context, advance debates about cryptography, based on mathematical theories, influenced dynamized wars. Going little beyond present some concerning role of as means data security, one main discussions contemporary society. reflection, point out position power holders knowledge occupy, that, scope basic school, lacks important both teachers students.