Travesa i Grau, ArturBou Comas, Aleix2018-05-232018-05-232018-01-19https://hdl.handle.net/2445/122510Treballs Finals de Grau de Matemàtiques, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2018, Director: Artur Travesa i Grau[en] Since 2001, AES symmetric private key criptosystem is being used as one of the standards to encrypt a huge amount of messages. AES is analysed from an algebraic point of view using finite field theory, a less common approach in the available standard literature. To finish, the security of the cryptosystem is assessed.45 p.application/pdfcatcc-by-nc-nd (c) Aleix Bou Comas, 2018http://creativecommons.org/licenses/by-nc-nd/3.0/esXifratge (Informàtica)Treballs de fi de grauCamps finits (Àlgebra)Seguretat informàticaData encryption (Computer science)Bachelor's thesesFinite fields (Algebra)Computer securityinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess