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Ring-LWE

Definition

Ring-LWE, or Ring Learning with Errors, is a specific variant of the Learning with Errors (LWE) problem that operates within a ring structure, offering improved efficiency and smaller key sizes compared to its general LWE counterpart. It forms a mathematical foundation for lattice-based cryptographic schemes, which are designed to be resistant to quantum computer attacks. Ring-LWE is a leading candidate for post-quantum public-key encryption.