Microsec Ltd., a medium-sized company, headquartered in Hungary, is an active participant in the IT market since 1984. The firm has a prominent role in Public Key Infrastructure based electronic signature solution developments, online user authentication, delivery systems, encryption, qualified trust services and C-ITS message security services. Main Capacities The operator of the ”e-Szignó Certificate Authority”, an eIDAS Qualified Trust Service Provider (QTSP); Software development based on Public Key Infrastructure (PKI) such as electronic signature creation, electronic delivery systems, and CA software family (MicroCA Suite); PKI related consultancy and technical standardization related activity under the framework of European Telecommunications Standards Institute (ETSI); Development and operation of the Hungarian Online Business Register and Company Information System and other technical background services; Development of the Hungarian ICAO standard ePassport and electronic signature-ready national eID security architectures; Expert of security certificates used by cooperative intelligent transport systems (C-ITS); Provider of C-ITS message security certificates (Microsec V2X PKI platform) according to the European (CCMS) and the North American (SCMS) standards. Memberships European Telecommunications Standards Institute (ETSI) since 2007 European Signature Dialog (ESD) since 2019 CAR 2 CAR Communication Consortium (C2C-CC) since 2020 5G Automotive Association (5GAA) since 2020 OmniAir Consortium since 2020 PKI Consortium since 2021