This book is packed with methods and techniques to guide the reader into encryption, as how is cryptography present in their lives, at almost every aspect without even notice it.

The authors focus on major advances to achieve secure transactions, secure communications and even to impact on the way economy works, emerging as a tool not only for secrecy but as a seed to a different approach to see the modern world. Some simple examples will guide the reader to the relevant ideas behind cryptography, the encryption of messages.