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arXiv · 2202.05178

Semidirect Product Key Exchange: the State of Play

Christopher Battarbee·Delaram Kahrobaei·Siamak F. Shahandashti
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Abstract

Of the many families of cryptographic schemes proposed to be post-quantum, a relatively unexplored set of examples comes from group-based cryptography. One of the more central schemes from this area is the so-called Semidirect Product Key Exchange (SDPKE), a generalisation of Diffie-Hellman Key Exchange that is plausibly post-quantum. In this report we survey the state of the literature relating to SDPKE, providing a high-level discussion of security, as well as a comprehensive overview of the proposed platforms and the main cryptanalytic ideas relevant to each.

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Christopher Battarbee, Delaram Kahrobaei, Siamak F. Shahandashti. 2022-02-10. Semidirect Product Key Exchange: the State of Play. https://arxiv.org/abs/2202.05178

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