Definition ∞ Ring SIS, or Ring Small Integer Solution, refers to a hard mathematical problem foundational to certain post-quantum cryptographic schemes. This problem is a variant of the Short Integer Solution problem, adapted for algebraic structures known as polynomial rings. The computational difficulty of solving Ring SIS forms the security basis for lattice-based cryptography, a leading candidate for quantum-resistant encryption and digital signatures. Its resistance to quantum algorithms makes it vital for securing digital assets against future quantum computer threats.
Context ∞ Research into Ring SIS and its applications is highly active within the post-quantum cryptography community, as governments and industries prepare for the advent of quantum computers. A key discussion involves the efficiency and parameter selection for Ring SIS-based schemes to ensure both security and practical performance. Future standardization efforts will likely incorporate cryptographic systems relying on the hardness of problems like Ring SIS.
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