HistoTrust : Tracing AI behavior with secure hardware and blockchain technology

International audienceIn areas of activity where the notion of accountability is strong, theadoption of artificial intelligence (AI) is limited by the opacity andlack of understanding of its behavior, all the more so in theembedded domain where neural networks are compressed andexecuted on microcontrollers. While the NIST introduced in 2021several principles allowing the AI explainability, this paperintroduces a novel scheme, HistoTrust, combining securehardware and blockchain technology to bring trust in thetraceability of AI behavior and allow its explainability. HistoTrustattests in an Ethereum ledger all the relevant data produced by aphysical device, especially the heuristics inferred by AI. Thus, theaudition of the ledger allows security verifications and AIbehavior analysis