RSA(RIVEST SHAMIR ADLEMAN) SIGNATURE METHOD FOR OBTAINING SAFETY AGAINST AN ATTACK THROUGH BASIC POWER ANALYSIS AND DIFFERENTIAL POWER ANALYSIS AND AN APPARATUS THEREOF

摘要

PURPOSE: An RSA(Rivest Shamir Adleman) signature method and an apparatus thereof are provided to prevent the extraction of a secret key by protecting an attack to a differential power analysis sub channel through the blinding of message.;CONSTITUTION: An initial hidden value is generated by using a secret key and a RSA(Rivest Shamir Adleman) modular(S210). Message is changed to hidden message through blinding by using the initial hidden value and the RSA modular(S220). A result value is calculated by calculating the hidden message, the initial hidden value, the RSA modular, and the secret key with dual exponentiation(S230). A signature value is restored by using the result value(S240). The initial hidden value is updated to a new hidden value(S250).;COPYRIGHT KIPO 2012