Ciberseguretat i vulnerabilitat en les telecomunicacions

Criptografia clàssica vs. criptografia quàntica

Abstract

In recent years, several advances in the field of quantum physics mean that quantum computers may be within reach in the near future. These developments are of enormous importance for cryptography. This paper provides an introduction to these
topics: classical and quantum computation, cryptography and the effects that quantum computation will have on associated algorithms, and the new quantum cryptography. It discusses how classical cryptographic algorithms are endangered, and how others based on quantum physics have great potential to guarantee the privacy of communication.

Keywords: quantum physics, quantum communications, cryptography, quantum cryptography,
algorithm BB84.