Protocolo Híbrido para Autenticação Quântica de Mensagens Clássicas com uso do Gerador de Sequências Pseudo-aleatórias 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 cryptoanalysis 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.