Parity operation applying device for protection of encrypt data, inserts parity bit in predetermined position between data bits based on insertion position generated for parity bit so as to generate encrypted data

摘要

A generator generates parity bit in accordance with the data having several bits. A location generator generates an insertion position for the parity bit based on the predetermined algorithm. An insertion unit inserts the parity bit in the predetermined position between the data bits based on the insertion position for generating encrypted data. Independent claims are also included for the following: (1) check bits applying device; (2) method of applying parity operation; and (3) method of applying check bits.