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Internet of Drones (IoD) is expected to play a central role in many civilianand military applications, that require sensitive and mission-criticalinformation to be processed. It is therefore vital to ensure the security andprivacy of IoD. However, unlike traditional networks, IoD has a broader attacksurface and is highly energy-constrained, which hinder the direct adoption ofstandard cryptographic protocols for IoD.  We propose an energy-efficient cryptographic framework (namely IoD-Crypt),which can potentially meet the requirements of battery-limited IoD.Specifically, IoD-Crypt utilizes special precomputation techniques andself-certified primitives to gain significant computation and communicationefficiency over the standard public key cryptography (PKC) suites. Ourintegrations and optimizations are broadly applicable to key exchange, digitalsignature and public key encryption schemes that encompass generic applicationsof PKC in IoD. We prove that IoD-Crypt is secure in the random oracle model. Wefully implemented IoD-Crypt on two common drone processors, namely 8-bit AVRand 32-bit ARM, and conducted an in-depth energy analysis. Our experiments (onboth platforms) showed that IoD-Crypt offers up to 48x less energy consumptioncompared to standard techniques. We have open-sourced our implementations forwide adoption and public testing purposes.

IoD-Crypt: A Lightweight Cryptographic Framework for Internet of Drones