??? ???? ?? ????? DES
?????
???? ??? ?????? ????? DES(Data Encryption Standard) ????? ?????????? ??? ????????? ????:- ** ?????/?? ????? ????? 64 ?? **- **- ** ??? ???? ??????? ?????????? ECB **- **- ????? ??????? ??? ??????? ????? ??????? ?? ????? ??????? ** ??????? ????????
????? ???????: ????? ?? ???? ??????? ????? ????? ????? DES ????????.
????? ?? ???????: ????? ???? ?????? ?????? ??????? ???????? ??????? ??????.
??????? ???????: ??? ?????? ???? ASCII ??? 8 ???? (64 ??)? ??? ?? ??? ?????? ???????? ???????. ??????? ?????????
- ??? ?????? ???? ?????? - ?????? ????? ??? ???????? - ??? ???????? ??????? - ????? ????? ????? ?????? ???????
1. ????? ???????? DES ??? ??? ???? ??????? ????? ?????????? ??? ?? ???? ???????? 2. ????? ???????? ?????? ??????? ???? ????? ??? ???? ?????? ??? ?? ????? ???????? ?? ???? ?????? 3. ???? ???????? ????????? ???? ??????? ??? AES? ??????? ???????. ???????? ???????
- ??????? ?? ????? FIPS PUBS 46-3 - ??? ??????? ?????? 56 ?? - ??? ?????? 64 ?? - ???? ????? 16 ???? 