Conference paper Open Access
Authenticated Key Distribution: When the Coupon Collector is Your Enemy
Beunardeau, M.; Orche, F.; Maimuţ, D.; Naccache, D.; Rønne, P.; Ryan, P.
We introduce new authenticated key exchange protocols which on the one hand do not resort to standard public key setups with corresponding assumptions of computationally hard problems, but on the other hand, are more efficient than distributing symmetric keys among the participants. To this end, we rely on a trusted central authority distributing key material whose size is independent of the total number of users, and which allows the users to obtain shared secret keys. We analyze the security of our construction, taking into account various attack models. Importantly, only symmetric primitives are needed in the protocol making it an alternative to quantum-safe key exchange protocols which rely on hardness assumptions.
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- Publication date:
- July 20, 2020
- DOI:
-
- Keyword(s):
- Symmetric cryptography Key exchange protocol Authentication Provable security Post-quantum cryptography
- Grants:
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European Commission:
- FutureTPM - Future Proofing the Connected World: A Quantum-Resistant Trusted Platform Module (779391)
- Meeting:
- Innovative Security Solutions for Information Technology and Communication (SecITC 2019), Bucharest, Romania, November 14 - 15, 2019
- Alternate identifiers:
- Communities:
- License (for files):
- Creative Commons Attribution 4.0 International