The storage and processing of health data raise serious privacy concerns; therefore, the data must be encrypted. Fully Homomorphic Encryption (FHE) allows computations on encrypted data, which makes it a very promising technology in this context. However, although the efficiency of FHE algorithms has improved in recent years, they remain very complex. The security of several prominent FHE schemes is based on variants of the Learning With Errors (LWE) problem, which is also the basis of Module-Lattice-Based Key-Encapsulation Mechanism (ML-KEM), the new post-quantum standard for asymmetric encryption. In this paper, we propose an agile cryptographic scheme -combining ML-KEM and BGV -that allows efficient implementations in an embedded use case. We describe the parameter selection for the proposed scheme and show its feasibility with a proof-of-concept implementation.

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