Nkọwa: Encrypting File System (EFS) na-enye ike na onye ọrụ-transparent izo ya ezo nke ọ bụla faịlụ ma ọ bụ nchekwa na a NTFS olu. EFS na-arụ ọrụ na njikọ na EFS ọrụ, Microsoft si CryptoAPI na EFS File System Run-Time Library (FSRTL). EFS na-arụ ọrụ site na encrypting a faịlụ na a nnukwu symmetric igodo (makwaara dị ka File Encryption Key, ma ọ bụ FEK), nke na-eji n'ihi na ọ na-ewe a dịtụ obere ego nke oge iji encrypt na decrypt nnukwu ego nke data karịa ma ọ bụrụ na ihe asymmetric igodo cipher na-eji. The symmetric igodo na-eji izo ya ezo na faịlụ na-ahụ na-ezoro ezo na a ọha na eze isi na bụ na onye ọrụ na-ezoro ezo na faịlụ, na a ezoro ezo data na-echekwara na onye ọzọ na-ezoro ezo nke ezoro ezo data. Otú ọ dị, EFS na-arụ ọrụ site na encrypting a faịlụ na nnukwu symmetric igodo (a makwa
CryptoAPI