Paper 2021/254

Multivariate Public Key Cryptosystem from Sidon Spaces

Netanel Raviv, Ben Langton, and Itzhak Tamo


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 a 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 algebraic attacks. In particular, it is proved that the two popular attacks on the MinRank problem, the kernel attack and the minor attack, succeed only with exponentially small probability. The system is implemented in software, and its hardness is demonstrated experimentally.

Available format(s)
Publication info
Published by the IACR in Pkc 2021
Multivariate Public Key CryptosystemMinRank ProblemSidon Spaces
Contact author(s)
netanel raviv @ wustl edu
blangton @ g hmc edu
zactamo @ gmail com
2021-03-03: received
Short URL
Creative Commons Attribution


      author = {Netanel Raviv and Ben Langton and Itzhak Tamo},
      title = {Multivariate Public Key Cryptosystem from Sidon Spaces},
      howpublished = {Cryptology ePrint Archive, Paper 2021/254},
      year = {2021},
      note = {\url{}},
      url = {}
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