ASSIS, Francisco Marcos de; FREIRE, Raimundo Carlos S.2025-03-132006https://rigalileo.itegam.org.br/handle/123456789/639In 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.Autenticação QuânticaCriptografia QuânticaBlum-Blum-ShubSegurança IncondicionalProtocolos Híbridospdf.Ciências Exatas e da Terra Engenharias Ciência da Computação