Multivariate Public Key Cryptosystem from Sidon Spaces. (arXiv:2106.07785v3 [cs.CR] UPDATED)

A Sidon space is a subspace of an extension field over a base field in which
the product of any two elements can be factored uniquely, up to constants. This
paper proposes a new public-key cryptosystem of the multivariate type which is
based on Sidon spaces, and has the potential to remain secure even if quantum
supremacy is attained. This system, whose security relies on the hardness of
the well-known MinRank problem, is shown to be resilient to several
straightforward …

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