S-DES1
페이지 정보
작성일 22-12-22 04:12본문
Download : S-DES1.hwp
Download : S-DES1.hwp( 97 )
순서
,기타,레포트
S-DES1에 대하여 조사하였습니다.S-DES1 , S-DES1기타레포트 ,
S-DES1
다.
●IP함수 적용 후 오른쪽 4자리를 E/P(확장/순열)작업을 수행
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
● 8-비트 서브키 K2 = (K2-xxxx-xxxx, K22, K23, K24, K25, K26, K27, K28)이 배타적 논리합을 이용하여 위의 값에 더해짐
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
⊕ ☜ K2
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
● 배타적 논리합 후 왼쪽, 오른쪽 4-비트씩 나누어 각각 S-BOX의 S-xxxx-xxxx,S-xxxx-xxxx에 INDEX로 적용 한다.
● S-box
● S-box(S-xxxx-xxxx,S-xxxx-xxxx)에서 배타적 논리합 후 INDEX에 해당되는 값을 찾아 4-비트 생성
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
-xxxx-xxxx
S-xxxx-xxxx(-xxxx-xxxx-xxxx-xxxx,-xxxx-xxxx-xxxx-xxxx)=S-xxxx-xxxx(-xxxx-xxxx,-xxxx-xxxx)=-xxxx-xxxx-xxxx-xxxx S-xxxx-xxxx(-xxxx-xxxx-xxxx-xxxx,-xxxx-xxxx-xxxx-xxxx)=S-xxx…(To be continued )
레포트/기타
S-DES1
설명
S-DES1에 대하여 조사하였습니다.