The Encrypting File System (EFS) on Microsoft Windows is a feature introduced in version 3.0 of NTFS that provides filesystem-level encryption. Basic ideas · Operation · Security · Supported operating systems
The Encrypted File System, or EFS, provides an additional level of security for files and directories . It provides cryptographic protection of individual files on NTFS file system volumes using a public-key system.
When an encrypted file system is created, a unique volume encryption key is generated that is used to encrypt the data. A passphrase is required to access the ...
EFS is a feature in Windows that allows you to encrypt files and folders. When you enable EFS, your data becomes unreadable without the correct decryption key.