In cryptography, the Unbalanced Oil and Vinegar scheme is a modified version of the Oil and Vinegar scheme designed by J. Patarin. Both are digital signature schemes. They belong to the group of multivariate cryptography. The security of this signature scheme is based on an NP-hard mathematical problem. To create and validate signatures a minimal quadratic equations system has to be solved. Solving m equations with n variables is an NP-hard problem, even when using a real existing quantum computer. Therefore, the signature schemes based on multivariate equations systems are considered to be quantum resistant.
Read more about Unbalanced Oil And Vinegar: Public and Private Key, Creation of A Signature, Validation of A Signature, Problems and Advantages of The UOV Scheme
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