<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: I-Passage: Encrypting File System EFS inikeza ukubethela okuqinile nokucacile komsebenzisi kwanoma yiliphi ifayela noma ifolda kumqulu we-NTFS. I-EFS isebenza ngokubambisana nensizakalo ye-EFS, i-Microsofts CryptoAPI kanye ne-EFS File System Run-Time Library FSRTL. I-EFS isebenza ngokubethela ifayela ngekhiphedi ye-bulk symmetric key eyaziwa nangokuthi i-File Encryption Key, noma i-FEK, esetshenziswa ngoba kuthatha isikhathi esincane ukubethela nokuqaqa inani elikhulu lemininingwane uma kuqhathaniswa nokuthi kusetshenziswa i-asymmetric key cipher. Isihluthulelo sokulinganisa esisetshenziselwa ukubethela ifayela sibethela ngesihluthulelo somphakathi esihlotshaniswa nomsebenzisi obethele ifayela, futhi le datha ebethelwe igcinwa ekusakazeni kwedatha okuhlukile kwefayela elibethelwe. Ukuze kuxazululwe ifayela, uhlelo lwefayela lusebenzisa ukhiye womsebenzisi ukuze kuxazululwe ukhiye ofanayo ogcinwe ekhanda lefayela. Ibe isebenzisa ukhiye wokulinganisa ukuze ivule ifayela. Ngenxa yokuthi lokhu kwenziwa ezingeni lohlelo lwefayela, kuyabonakala kumsebenzisi. Futhi, uma kwenzeka umsebenzisi elahlekelwa ukufinyelela kukhiye wakhe, ukwesekwa okungeziwe kokhiye bokuvula kufakwe ohlelweni lwe-EFS, ukuze i-ejenti yokutakula isakwazi ukufinyelela kumafayela uma kudingeka. Ukubethela okuhlinzekwa yi-NTFS nokucindezelwa okuhlinzekwa yi-NTFS kuyahambisana; noma kunjalo, i-NTFS ingasetshenziselwa eyodwa futhi ithuluzi lomuntu wesithathu kwelinye. Umbuzo: Yini esetshenziselwa ukufinyelela uma ifayela lilahlekile?  <response>: okhiye abengeziwe bokuvula 