Efsinfo.exe: Encrypting File System InformationNEW


This command-line tool displays information about files and folders encrypted with Encrypting File System (EFS) on NTFS partitions.

EFS is a feature of Windows 2000 that enables users to encrypt and decrypt files. This helps users keep files safe from intruders who might gain unauthorized physical access to their sensitive data (for example, by stealing a laptop or external disk drive).

In EFS, users work with encrypted files and folders just as they do with any other files or folders: encryption is transparent. If the EFS user is the same person who encrypted the file or folder, the system decrypts the file or folder when the user accesses it later. Unauthorized users or intruders, however, are prevented from accessing any encrypted files or folders.

You can also encrypt or decrypt a file or folder with the command-line tool cipher, which is included with the Windows 2000 operating system.

EfsInfo Topics

File Required