Embedded systems are spreading massively in critical infrastructures (industry 4.0, smart city, transportation...), contributing to the increase of the global attack surface. Indeed, this type of system, which is often poorly protected and poorly controlled by the teams in charge of the cybersecurity, can become a privileged entry point for attackers. Due to the proximity of embedded systems to a potential attacker, it is necessary to consider a broad threat model integrating logical and physical attacks when designing such systems. The work presented in this manuscript addresses several research axes. In a first axis, we propose solutions to study and implement cryptographic primitives under performance, area, energy and security constrain...