Digital signature type two-dimensional code generation apparatus and digital signature type two-dimensional code authentication apparatus

摘要

PROBLEM TO BE SOLVED: To provide means for detecting falsification/alteration on a two-dimensional code and means for performing identity verification, by using digital signature algorithm.SOLUTION: A digital signature two-dimensional code generation device, according to digital signature algorithm using an elliptic curve having safety mathematically guaranteed, generates a digital signature two-dimensional code in which a signature value for detecting falsification/alteration on the digital signature two-dimensional code is embedded. A digital signature two-dimensional code authentication device reads a digital signature two-dimensional code and performs error correction processing; acquires a signature value embedded in the digital signature two-dimensional code; and performs authentication of the digital signature two-dimensional code and identity verification, by using the digital signature algorithm using the elliptic curve.