Information-Centric Networking (ICN) has emerged as a perfect match to support data-driven applications. Typically, ICN ensures data integrity and authenticity, by provisioning signed and verifiable data packets. Nonetheless, the ICN cryptography-based security scheme entails increased computational and communication cost, while also necessitates continuous connectivity to the infrastructure. We claim that this security approach requires supportive mechanisms to perform adequately in scenarios involving disruptive connectivity and short-term communication. In this paper, we investigate the applicability of two security approaches, namely the in-force cryptographybased approach and a ‘lighter’ reputation-based one, in ad hoc information-centric networks, and aim to identify the pros and cons of each solution. Our experiments rely on a scenario deemed appropriate for the particular research objective: we selected an ICN-based Flying Ad hoc Network (FANET). We assess the impact of intermittent connectivity, as well as, the associated computational and communication cost, and the dynamics of mobility. Our results demonstrate that the reputation-based approach allows for building trust relations in a fast and lightweight manner, but without requiring permanent connectivity to trusted third parties. Therefore, we argue that the standard ICN security system can be consolidated by integrating reputation-based trust as an essential complementary mechanism.