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Ring SIS Problem

Definition

The Ring SIS Problem, or Ring Learning With Errors problem, is a mathematical challenge central to lattice-based cryptography, a field considered quantum-resistant. It involves finding a short vector in a lattice given noisy linear equations over a polynomial ring. The computational difficulty of solving this problem forms the security basis for several modern cryptographic schemes. This problem is a candidate for post-quantum cryptography, offering protection against attacks by future quantum computers.