ArticleScientific reports2026
SELAM: selective ECC-based lightweight authentication for the internet of medical things.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors.
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Abstract
Secure authentication in the Internet of Medical Things (IoMT) must ensure strong security while maintaining minimal computational overhead, especially for resource-constrained medical devices. This study introduces SELAM, a lightweight multifactor authentication framework optimized for critical IoMT applications. Unlike traditional designs, SELAM selectively confines elliptic-curve cryptography (ECC) to user/device registration, while relying on lightweight primitives (XOR, hashing/HMAC, and timestamp-freshness checks) in online operation to minimize runtime cost. The scheme is validated using the CICIoMT-2024 dataset through Python-based cryptographic simulation and ns-3 network emulation. Under standardized 16-byte online field accounting, SELAM reduces payload-only online communication to 6,144 bits/device versus 7,680 bits/device for a Heavy+Verify ECC baseline; in ns-3 header-inclusive accounting, this corresponds to 39,416 versus 45,703 bits/device at [Formula: see text]. At 1 Mb/s, SELAM achieves 6.24 ms total per-device authentication overhead (communication + computation) compared to 31.27 ms for Heavy+Verify, while reducing online computation from 23.59 ms to 0.10 ms per device. Across cohort sizes [Formula: see text]-[Formula: see text] over 20 seeds (mean ± 95% CI), SELAM maintains attack-regime authentication success ratio (ASR) at 0.88-0.90 (baseline: 0.90-0.92), with protocol-level FAR=0 (no accepted replay/impersonation) and benign FRR=0 observed in PhaseLogs. Security analysis using BAN logic confirms mutual authentication and key confirmation on a fresh session key in Phases 4-5, with replay/impersonation resistance under the stated Dolev-Yao adversary and standard MAC/AEAD assumptions. The results indicate that confining ECC to registration preserves strong authentication while removing public-key operations from the performance-critical online path.
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