 Ring learning with errors

Ring Learning with Errors (Ring-LWE) is a computational problem that is a specific instance of the more general Learning with Errors (LWE) problem, which is important in the field of cryptography, particularly for building secure cryptographic schemes such as encryption schemes, digital signatures, and homomorphic encryption. The LWE problem is based on the mathematical hardness of distinguishing between certain distributions of noisy linear equations over finite fields or lattices.