FIAT SCHAMIR PERSONAL IDENTIFICATION APPARATUS WHICH IS SAFE FROM AN ERROR INJECTION ATTACK IN WHICH A SECRET VALUE IS APPLIED IN A REACTION PROCESS FOR MAKING DIFFICULT MALEVOLENT ATTACKER ANALYSIS, A METHOD AND RECORDING MEDIUM THEREOF

摘要

PURPOSE: A Fiat Schamir personal identification apparatus which is safe from an error injection attack, a method and recording medium thereof are provided to perform personal identification using a Fiat Schamir method, thereby preventing a leakage of a secret information value without a significant increase of calculations.;CONSTITUTION: A signer(100) computes an agreement value using a random value and etc. The signer transmits the agreement value to a signature requesting person(11). A set S is randomly selected by the signature requesting person(200) and transmitted to the signer(12). The set S is used for reaction value calculations by the signer. The signer computes a reaction value using a new secret value and a correspondence value of the signature requesting person. The signer transmits the reaction value to the signature requesting person(13). The reaction value is compared with a value computed using the agreement value and etc. received during a agreement process. The signature requesting person verifies the signer through the comparison(14).;COPYRIGHT KIPO 2012