Mã hóa private key và lưu vào flash disk ccó giao tiếp usb 2 0

• 't BO GIAO DUC vA DAo TAO TRUONG DHnL NGO~I NGU-TIN HQC TP.HCM KHOA CONG NGHt THONG TIN KHOA LuAN TOT NGHIEP • • MA HOA vA a PRIVATE KEY LUU TRU VAo FLASH DISK CO GIAO TIEP USB 2.0 GIANG VlEN HUONG DAN: Th.S DO THANH VI NGAN SINH VlEN THVC HIt.N: LE HUu HAo HUYNH THI KIM THOA THANH PHO HO CHi MINH - 2005 • ri F-"~~~~~~~~-~-~~-"-~"-' ~~-~-~~-"~-~-~~~~~-~~_._~~~~~~~=~ ~ ~ ~ Il ~ II Lai cam on ~II ~ ~ ~~~~~~ II ~ ~~~ II ~i ~ ~ ~t Chung em chan bay to long cam an dSn toan thS Th~y co Khoa [ Cong Ngh~ Thong Tin trU'{rngD\li HQc Ngo\li ngu' - Tin hQc TP HB Chi II ~~ Minh da: truySn d~t nhfmg kiSn thuc nSn tang va b6 fch su6t qua trinh ] II iJ ~ f~ ~ i1 chung em hQc t?P va nghien cuu t~i truOng, ~ ~ ~' il ~ Ii D~c bi~t chung em r~t biSt on th~y DB Thanh Vi Ngan da: t?n tinh giup ~ Ii' chung em hoan dS tai .0: :- II~ ~II II.~ II ii II Chung tran trQng gai lai cam an chan va sau s~c nh~t dSn ba :> II il my, nhung nguai da:sinh va nuoi n~ng chung nen nguai nhu hom ] ~ ~ ~ J Il ~ ~ II f JI Nhan day, chung toi xin cam an dSn nhUng nguai b~n da: giup va ung ~ ~ II il hQ chung toi thai gian qua ~ ~ II [t JI MQt l~n nua chung em xin tran trQng cam an Khoa Cong Ngh~ Thong ] II II tt Tin tru'{rngDHDL Ngo\li ngu - Tin hQc TP HB Chi Minh da: t~o diSu ki~n ] ~lcho chung em th\Tchi~n dS tai ~ ~ 'Ik II ~ ~II Huu Hao - Kim Thoa ~ II ~ II~ ~ :- II~ II~ ~II ~II ~II II.• :- II II' - II :- Il ~ r II Ilk iJ: ' J'I Il IIr II b~~~~~~~~ ~._-~ -~~~~~~~_._-~~~~~~~~~~~~~._ II :> _~=~ ~ Muc luc • • CHVONG : Gi6'i thi~u CHVONG : TAng Quan v~Chii' Ky Di~n Til' 2.1 Gi6i thi~u 2.2 Th@nao la chfr ky di~n tu : 2.3 C&ut~o clla chfr ky di~n tu 11 2.4 Cac tiOOch&tclla chfr kY di~n tu 13 2.5 Chfr kY di~n tir tn.rc ti@p(Direct Digital Signatures) 14 2.6 Chfr ky di~n tir tn;mg tai (Arbitrated Digital Signatures) 15 2.7 Gi6i thi~u vS chung chi khoa cong khai Certification Authority (CA) 15 CHVONG : Thu~t Toan Mil Boa Rijndael- AES 17 3.1 T6ng quan 17 3.2 Cac phep toan co b~mdugc su d\lng thu~t toan AES 18 3.3 C&utruc rna hoa clla thu~t toan Rijndael 20 3.4 Giai rna 25 3.5 Cach t~o khoa rna rQng (Key expansion) 25 3.6 Vng d\lng Rijndael th\fc t@ 27 3.7 Phan tich cac class vS Rijndael net : 29 CHVONG :Gi6'i thi~u v~ e8ng giao ti~p USB 2.0 36 4.1 USB driver 36 4.2 USB Driver Architecture 36 4.3 USB Devices 37 4.4 USB Topology 37 4.5 USB Host Controller 38 4.6 USB System Software 39 4.7 Tim hiSu vS c6ng giao tiSp USB 2.0 41 CHVONG : Cae Mo Bioh 5.1 M6 hinh thuang dung D~ Nghi 44 44 5.2 M6 hinh dS xufit 49 5.3 Gi6i thi~u cac tinh nang 51 CHUdNG : Gi6"i Thi~u ChU'O'ng Trinh 52 6.1 Phan tich va gi6i thi~u tinh nang cua cac ham thu vi~n 52 6.2 Gi6i thi~u vS chuang trinh demo 811 dvng b