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embedded elapsed-time attestation

Technological challenge: Cyber security : hardware and sofware (learn more)

Department: Département Systèmes (LETI)

Laboratory: Laboratoire Sécurité des Objets et des Systèmes Physiques

Start Date: 01-09-2022

Location: Grenoble

CEA Code: SL-DRT-22-0158

Contact: christine.hennebert@cea.fr

The security objectives of connected objects are usually Confidentiality, Integrity and Authentication (CIA). However, guaranteeing these objectives does not prevent changing the order of events or the elapsed time between two events. To meet these new security needs and ensure the security of an history of data or transactions, connected objects must be able to provide proof of the time interval separating two events, or two blocks of structured data, within an asynchronous communication system. This thesis topic proposes to explore possible solutions allowing a constrained device or IoT to prove the elapsed time based on secure hardware components such as TEE (Trusted Execution Environment), SE (Secure Element) and TPM (Trusted Platform Module).

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