Protocolo híbrido para autenticação quântica de mensagens clássicas com uso do gerador de sequências pseudoaleatórias blum-blum-shub.

Abstract

In the present time, when the search for computational and unconditional security is a reality, studies have been done to solve problems related to messages changes and authentication, in a safe way. Cryptographic systems are studied, valued and tested for real safety, allowing the cryptoanalysts of such systems. The quantum cryptography appears as a powerful allied to provide unconditional security. The quantum authentication of classic messages is a reality that can be put in practice in a relatively short time. A hybrid protocol authentication of classic messages is considered, using the BBS(Blum- Blum-Shub), pseudo-random sequence generator. The protocol´s security against individual attacks is formally evaluated.