Cov ntsiab lus ntawm Pfitzner Data Wipe Method
Pfitzner txoj kev yog ib qhov software raws li cov ntaub ntawv kho tshuab tsim los ntawm Roy Pfitzner los rhuav cov ntaub ntawv los ntawm tus tsav nyuab los yog lwm qhov chaw cia khoom.
Kev siv Pfitzner cov ntaub ntawv yuav tsum tiv thaiv tag nrho cov software raws li cov ntaub ntawv rov qab los ntawm kev nrhiav cov lus qhia ntawm tus tsav, thiab nws tseem yuav tsis tiv thaiv feem ntau ntawm cov khoom kho raws li kev rho tawm cov ntaub ntawv.
Peb lub npe ntawm cov ntaub ntawv cov ntaub ntawv thiab cov ntaub ntawv pov tseg cov ntaub ntawv muaj xws li software uas siv cov ntaub ntawv kev siv cov ntaub ntawv xws li Pfitzner los sau txog ob peb cov ntaub ntawv ntawm ib tug cia cia lossis kiag li txhua yam, nrog rau tag nrho kev khiav hauj lwm .
Pfitzner txoj kev ua haujlwm licas?
Muaj ntau ntau cov ntaub ntawv los so cov kev ua txhua yam thiab txhua tus ntawm lawv mus txog erasing cov ntaub ntawv xwb me ntsis txawv dua lwm tus. Piv txwv, qee tus neeg yuav siv cov zauv xws li sau ntawv xoom , zauv thiab sawv daws zoo li muaj kev ruaj ntseg lwv , lossis ua ke ntawm zeros, sawv daws, thiab cov cim cim, xws li hauv VSITR thiab Schneier txoj kev.
Txawm tias feem ntau cov software siv Pfitzner txujci raws li hauv qab no, qee cov yuav hloov nws thiab siv tus nab npawb tsawg dua (xya yog hom):
- Kis 1 - 33: Sau ib tug cim ua cim
Nws yog qee zaum sau ua Pfitzner 33-dhau , Pfitzner 7-pass , random (x33) lossis random (x7).
Ntsis: Cov ntaub ntawv Random thiab Gutmann ua haujlwm zoo ib yam li Pfitzner tias nkawd ob leeg tsuas yog siv cov cim sib tw dhau los sau cov ntaub ntawv, nrog rau kev sib txawv ntawm kev dag xwb hauv kev siv pes tsawg zaus.
Ib qho "kis" tsuas yog siv pes tsawg zaus hauv txoj kev khiav. Thiaj li nyob rau hauv rooj plaub ntawm Pfitzner txoj kev, muab tias nws overwrites cov ntaub ntawv nrog random cim, nws ua li ntawd ib zaug lossis ob zaug tab sis 33 lub sij hawm sib txawv.
Ntxiv rau qhov no, feem ntau software yuav cia koj khiav ntawm Pfitzner txujci ntau tshaj ib zaug. Yog li ntawd, yog tias koj yuav tsum khiav cov qauv no 50 zaug (uas yog twv yuav raug ntau tshaj), software yuav muaj overwritten tus tsav tsis 33 lub sij hawm, tab sis 1,650 zaug (33 x 50)!
Qee cov ntaub ntawv rhuav tshem cov ntaub ntawv kuj muaj peev xwm xyuas cov kis tau tom qab lawv tiav lawm. Qhov no tsuas txhais tau tias cov software tshawb xyuas tias cov ntaub ntawv tau ua nyob ntawm sau cov cim random (los yog cov cim txawm tus qauv txhawb nqa). Yog tias kev kuaj xyuas tsis tiav, qhov kev zov me nyuam yuav qhia tau koj los yog cia li khiav cov txheej txheem dua kom txog rau thaum nws dhau qhov tseeb.
Software uas Txhawb Txoj Kev Pfitzner
Pfitzner cov ntaub ntawv tsis muaj kev qhia txog txoj kev kho tsis yog ib qho ntawm cov neeg sawv daws nyiam, tab sis tseem muaj cov kev pab cuam uas muaj xws li kev xaiv.
Catalano Secure Delete yog ib qhov kev pab cuam uas muaj peev xwm siv Pfitzner txoj kev. Zoo li feem ntau cov ntaub ntawv thiab cov ntaub ntawv rhuav pov tseg, nws kuj txhawb ntau txoj hau kev xws li NAVSO P-5239-26 , Random Data, AR 380-19 , DoD 5220.22-M , thiab GOST R 50738-95 .
Qee lwm daim ntawv sau zoo sib xws nrog Securely File Shredder , Freeraser thiab Eraser . Cov kev pabcuam no tuaj yeem rho tawm cov ntaub ntawv thiab cov ntawv sau uas siv ib txoj kev uas zoo sib xws tab sis tsis zoo tib yam rau Pfitzner. Piv txwv, koj tuaj yeem xaiv Gutmann txoj hauv ib co ntawm cov kev pabcuam no los sau cov ntaub ntawv 35 zaug, tab sis lawv tsis yog hais tias yuav txhawb nqa Pfitzner txoj kev.
Yog tias koj nyob ntawm Mac, SecureRemove txhawb 33-kis Pfitzner nrog rau ntau txoj kev xws li 4-pass RAZER, DoD 5220.22-M (E) thiab GOST R 50739-95.
CBL Cov Ntaub Ntawv Shredder thiab DBAN yog ob yam kev qhia txog kev puas tsuaj uas muaj peev xwm overwrite tag nrho cov tsav nyuaj (tsis meej cov ntaub ntawv / folders, tab sis tag nrho cov khoom) nrog cov cim cim. Qhov zoo tshaj plaws ua rau Pfitzner txoj kev, vim tias cov kev pab cuam no tsis ncaj qha rau nws, tej zaum koj yuav siv tau cov kev kho kom zoo xws li cov ntaub ntawv Random los so lub tsheb ntau li koj nyiam.
BitRaser tsis yog dawb, tiam sis zoo ib yam li CBL Data Shredder thiab DBAN thiab yeej txhawb Pfitzner, uas yog.
Scrub yog ib qho piv txwv ntawm ib qho kev pab cuam uas yuav ua tau ob qho tib si: txhuam cov neeg cov ntaub ntawv nrog rau tag nrho cov zog nyuaj, nyob ntawm seb koj xaiv li cas.
Puas Yog Koj Siv Tus Qauv Pfitzner?
Roy Pfitzner, tus creator ntawm no cov ntaub ntawv so txujci, tau hais tias cov ntaub ntawv tej zaum yuav tau muab rov qab yog tias nws tsuas yog overwritten 20 lub sij hawm, thiab uas sau random cim ntau tshaj 30 zaug yuav tsum txaus. Txawm li cas los xij, qhov no yog qhov tseeb yog rau kev sib cav.
Nws tau raug hais tias tus naj npawb ntawm cov kis tau nrog Gutmann txujci (uas sau cov cim random 35 lub sij hawm) tsis yog tiag tiag tsim nyog vim tias tsuas yog ob peb kis yog qhov zoo tshaj plaws leej twg ua tau. Koj tuaj yeem nyeem ntawv me ntsis ntxiv txog qhov no: Cov Kev Siv Gutmann Yog Dab Tsi? .