I-DoD 5220.22-M iyi-software esekelwe kwisistimu ye-sanitization yedatha esetshenziselwa izinhlelo ezihlukahlukene zamafayela we-shredder kanye nedatha yokudabula ukubhala imininingwane ekhona kwi- hard drive noma enye idivayisi yesitoreji.
Ukulahla i-hard drive usebenzisa indlela ye-DoD 5220.22-M yokuhlanzeka kwedatha kuzovimbela zonke izindlela zokutakula zefayela ezisekelwe kwikhompyutha kusukela ekuphakamiseni ulwazi kusuka ku-drive futhi kufanele futhi zivimbele iningi uma kungezona zonke izindlela zokutakula ezisekelwe kwi-hardware.
Indlela yeDoD 5220.22-M ivame ukubhekwa ngokungalungile njengeDoD 5220.2-M (.2-M esikhundleni se-.22-M).
I-DoD 5220.22-M Indlela Yokusula
Indlela ye-DoD 5220.22-M yokuchithwa kwedatha ngokuvamile isebenza ngendlela elandelayo:
- Dlula 1: Ubhala i-zero bese uqinisekisa ukubhala
- Dlula 2: Ubhala futhi uqinisekise ukubhala
- Dlulisa 3: Ubhala umlingisi ongahleliwe futhi uqinisekise ukubhala
Ungase futhi uhlangabezane nezinhlelo ezahlukene zeDoD 5220.22-M kufaka phakathi i-DoD 5220.22-M (E), DoD 5220.22-M (ECE), noma abanye. Ngamunye uzosebenzisa umlingiswa nokuncoma kwakhe (njengokungu-1 no-0) nokushintshashintsha kwama-frequencies of verifications.
Ngenkathi ingavamile kakhulu, kukhona enye inguquko eguquliwe yeDoD 5220.22-M ebhala i- 97 ngesikhathi sokudlula kokugcina esikhundleni somlingisi ongahleliwe.
Isofthiwe yamahhala esisebenzisa indlela yeDoD 5220.22-M yokusula
Kunezinhlelo eziningana zamahhala ezinokuzikhethela ukusebenzisa i-DoD 5220.22-M ukulinganisa izinga lokuhlanza ukususa lonke ulwazi kusuka ku-hard drive.
Ithuluzi lami lokusula idatha yedatha yokuzikhandla eliyithandayo elisebenzisa i-DoD 5220.22-M, phakathi kwezinye izindlela, yi- DBAN , kodwa abanye abambalwa banakho okukhethwa kukho, njenge- CBL Data Shredder .
Njengoba ufunda ngenhla, ezinye izinhlelo zamafayela okukhwabanisa asebenza kumafayela akhethiwe eyodwa noma ngaphezulu kunayo yonke idrayivu, futhi usebenzise i-DoD 5220.22-M.
Izibonelo zabathengisi bamafayili mahhala abanezinketho ze-DoD 5220.22-M ezifakwe kwifayela elihlaselwa zihlanganisa u- Eraser , Secure File Shredder , ne- Freeraser .
Okuningi mayelana ne-DoD 5220.22-M
Indlela ye-DoD 5220.22-M yokuhlanjululwa kwasekuqaleni ichazwa yi-US National Security Security Program (NISP) ku-National Industrial Security Program Operating Manual (NISPOM), lapha (le PDF ), futhi enye yezindlela ezijwayelekile zokuhlanza amanzi esetshenziswe kwisofthiwe yokubhujiswa kwedatha.
Izinhlelo eziningi zokubhujiswa kwedatha zisekela izindlela eziningi zokuhlanza idatha ngaphezu kweDoD 5220.22-M, njenge- Erase Secure , Bhala Zero , Random Data no- Schneier .
Qaphela: I-NISPOM ayichazi noma yiliphi izinga likahulumeni wase-US lokuhlanza idatha. I-Cognizant Security Authority (CSA) inesibopho sezinga lokunakekelwa kwedatha.
Njengoba ngikuqonda, indlela yeDoD 5220.22-M ayisekho evunyelwe (nanoma iyiphi indlela yokwaziswa kwe-software ehlanjululwayo) yokusetshenziswa kwamalungu ahlukahlukene e-CSA kuhlanganise noMnyango Wezokuvikela, uMnyango Wezamandla, iKhomishane Yezokulawulwa Kwezikhali Nuclear, futhi i-Central Intelligence Agency.
Ingabe i-DoD 5220.22-M ingcono kunezinye izindlela?
Cishe akunandaba ukuthi yikuphi okuningi okwenza idatha isula indlela oyisebenzisayo. Njengoba iningi lethu elisula ukushayela kwethu kanzima nje ukwenza kanjalo ngaphambi kokuba sithengise idrayivu noma sifake i- OS entsha, akufanele kube nokukhathazeka okukhulu ngokuthi zingaki izinhlamvu ezihleliwe ezibhalwa ku-drive ngokuhambisana neyezi noma zeros .
Ngaphezu kwalokho, abantu abaningi abazama ukubuyisela idatha kusuka ku-drive eyithengiwe ngokuthenga cishe basebenzisa amathuluzi wansuku zonke njengoRubuva , futhi ngenkathi bezama ukuthola imininingwane esusiwe, abawenzi kahle uma idatha isula indlela.
Kodwa-ke, uma ukhetha indlela ye-sanitization yedatha, ungase ucabange ukuthi kuzothatha isikhathi esingakanani ukusula idrayivu. Uma une-drive enkulu enkulu, Bhala i-Zero izothatha isikhathi esingaphansi ukuqeda kune-DoD 5220.22-M, okuzoshesha ngokushesha kuneyodwa i- Gutmann engase iqhube ukudlula ngaphezulu kwezingu-30.
Futhi cabanga ukuthi ngabe ukuqinisekiswa kwenziwa ngemuva kokudlula. Njengoba isofthiwe esithile ingase isebenzise indlela yeDoD 5220.22-M ngendlela eqinisekisa ngamunye ukubhala ekupheleni kwepasenti ngayinye, inqubo yonke izothatha isikhathi eside kunokusebenzisa indlela ehlukile yokusula engaqinisekisi nhlobo (njenge-Erase Erase) noma ulinde kuze kube sekupheleni kokudlula kokugcina ukuqinisekisa ukuthi idatha ibhalwe ngaphezulu.
Esinye isici esingase sinqume ukuthi iyiphi indlela oyisebenzisayo idatha yangempela esetshenziselwa ukubhala phansi i-hard drive. Ezinye izindlela zokusula, njenge-Write Zero, sebenzisa i-zero esikhundleni sezinhlamvu ezingahleliwe. Kungenzeka ukuthi ukusebenzisa izinhlamvu ezingahleliwe kwenza kube lula ukuthi idatha ingatholwa.