Signature Electronique Atexo https://www.marches-publics.gouv.fr/crypto//signature// true SHA256 SHA256 https://ec.europa.eu/information_society/policy/esignature/trusted-list/tl.html https://ec.europa.eu/tools/lotl/eu-lotl.xml https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=uriserv:OJ.C_.2019.276.01.0001.01.ENG ATEXO