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Post-Quantum Session Establishment for Matter over Thread: Message Size, Transport, and Protocol Options

Commey, Daniel
arXiv (All) · Papers
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cryptography-and-securitynetworking-and-internet-architecture
Matter's first post-quantum change protects device attestation with ML-DSA, but its operational handshake, CASE, still derives session keys from P-256 ECDH, so recorded traffic can be decrypted once a quantum computer exists. We quantify the cost of moving CASE to ML-KEM and post-quantum signatures
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