SRH Hochschule Heidelberg

From Sealed to Anchored: What a Consortium Ledger Adds to HMAC-Sealed IoT Audit Logs in Ambient Assisted Living

A symmetric integrity seal is worth exactly what its key is worth. Any party holding the keyed-hash (HMAC) key of an Internet of Things (IoT) audit trail can forge a record, re-seal a modified one, and leave no cryptographic trace, so an HMAC-sealed log establishes nothing to an...