HOMOMORPHIC INFERENCE DEVICE, HOMOMORPHIC INFERENCE METHOD, HOMOMORPHIC INFERENCE PROGRAM, AND ANONYMIZED INFORMATION PROCESSING SYSTEM

摘要

A range assessment part (412) receives the input of an input encrypted text C_i obtained by encrypting input data, assesses whether a value obtained from the input data falls within a reference range, and generates a range encrypted text a_j based on the result of the assessment. A result generation part (413) generates a result encrypted text D corresponding to the result of carrying out, on the input data, inference including a non-polynomial computation by carrying out a homomorphic computation on the range encrypted text a_j generated by the range assessment part (412). An output part (414) outputs the result encrypted text D.