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Transcript-Bound Hybrid PQC Combiners Proven Downgrade-Resilient

2026-09-21 18:11 UTC · arXiv cs.CR · read the source ↗ #post-quantum-cryptography#hybrid-kem#tls
  • Engineer — Learn: Formal proof that hybrid ML-KEM combiners without transcript binding can be fully downgraded by an active attacker; engineers designing or auditing custom hybrid PQC handshakes (TLS, SSH, IKE) should verify their key schedule binds the session key to a transcript hash, not just the raw KEM output.
  • SOC/IR — Skip
  • Leader — Skip
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