Cryptography: between successes and failures

Abstract

Cryptography is a science whose origins can be dated many years ago. Nowadays, in the Era of Internet of Things, smart objects and cryptocurrencies, it has become an essential tool for the protection of our data. Millions of unwitting users play with crypto algorithms everyday. Although these algorithms are theoretically secure, sometime specific implementations are broken. In this manuscript, we will introduce the main strengths and weaknesses observed over two thousand years of history.