Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: Encrypting Pūnaha Kōnae (EFS) whakarato whakamunatanga kaha, me te kaiwhakamahi-tātari o tetahi kōnae kōpaki ranei i runga i te rōrahi NTFS. Ka mahi tahi a EFS me te ratonga EFS, te CryptoAPI a Microsoft me te Whare Pukapuka Whakahaere-Ao o te Pūnaha Kōnae EFS (FSRTL). Ka mahi a EFS ma te whakamunatanga i tetahi konae me te ki symmetric nui (e mohiotia ana ko te Kī Whakamunatanga Kōnae, ko te FEK ranei), e whakamahia ana na te mea he iti noa te wa ki te whakamunatanga me te whakakore i nga raraunga nui atu i te mea ka whakamahia he tohu matua kore. Ko te kī ōrite e whakamahia ana ki te whakamunatanga i te kōnae ka whakamunatia ki te kī tūmatanui e pā ana ki te kaiwhakamahi i whakamunatia te kōnae, a ka penapenahia enei raraunga whakamunatia i roto i te awa raraunga rereke o te kōnae whakamunatia. Hei wetewete i te konae, ka whakamahia e te punaha konae te ki muna a te kaiwhakamahi ki te wetewete i te ki taurite kua penapenahia ki te upoko konae. Kātahi ka whakamahi i te kī taurite ki te wetewete i te kōnae. Na te mea ka mahia tenei i te taumata punaha konae, he maarama ki te kaiwhakamahi. Ano hoki, ki te ngaro te uru atu o te kaiwhakamahi ki a raatau ki, kua whakauruhia te tautoko mo nga ki whakakorekore taapiri ki roto i te punaha EFS, kia taea ai e te kaihoko whakaora te uru atu ki nga konae mena e hiahiatia ana. Ko te whakamunatanga e whakaratohia ana e te NTFS me te kōpeketanga e whakaratohia ana e te NTFS he mea motuhake; heoi, ka taea te whakamahi i te NTFS mo tetahi me te taputapu tuatoru mo tetahi atu.  Pātai: He aha te mea e whakamahia ana ki te uru atu ki te ngaro te kōnae?
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