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As the pending migration away from quantum-vulnerable cryptography becomes a reality, widely used key-exchange protocols like Signal need to be urgently replaced. One tool for finding replacements are deniable split Key Encapsulation Mechanisms (KEMs). Split KEMs are designed to mimic the message structure of Diffie-Hellman-based protocols such as X3DH used in Signal. In this work, we present a new deniable split KEM, which we call DiSK (Deniable Split KEM) based on the Module Learning With Error problem.

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DiSK - A Deniable Split KEM from Lattices

  • 会议论文

  • 发表日期：

    2026年

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  • Brian Goncalves,
  • Atefeh Mashatan

摘要

As the pending migration away from quantum-vulnerable cryptography becomes a reality, widely used key-exchange protocols like Signal need to be urgently replaced. One tool for finding replacements are deniable split Key Encapsulation Mechanisms (KEMs). Split KEMs are designed to mimic the message structure of Diffie-Hellman-based protocols such as X3DH used in Signal. In this work, we present a new deniable split KEM, which we call DiSK (Deniable Split KEM) based on the Module Learning With Error problem.