What is Encrypting File System (EFS)?Encrypting File System (EFS) is a feature of Windows that allows you to store information on your hard disk in an encrypted format. Encryption is the strongest protection that Windows provides to help you keep your information secure. Some key features of EFS: | • | Encryption is simple; just select a check box in the file or folder's properties to turn it on. | | • | You have control over who can read the files. | | • | Files are encrypted when you close them, but are automatically ready to use when you open them. | | • | If you change your mind about having a file encrypted, clear the check box in the file's properties. |
EFS is not fully supported on Windows Vista Starter, Windows Vista Home Basic, and Windows Vista Home Premium. For those editions of Windows, if you have the encryption key or certificate, you can do the following: | • | Decrypt files by running Cipher.exe in the Command Prompt window (advanced users) | | • | Modify an encrypted file | | • | Copy an encrypted file as decrypted to a hard disk on your computer | | • | Import EFS certificates and keys | | • | Back up EFS certificates and keys by running Cipher.exe in the Command prompt window (advanced users) |
Hard disk
The primary storage device located inside a computer. Also called a hard drive or hard disk drive, it is where your files and programs are typically stored.
Command Prompt window __elbasuer__ Command Prompt window
A window that mimics an old MS‑DOS display for typing command-line instructions.
Certificate
A digital document that verifies the identity of a person or indicates the security of a website. Certificates are issued by trusted companies known as Certification Authorities.
Encryption key __elbasuer__ Encryption key
A sequence of symbols or characters used to scramble or unscramble information that is being encrypted or decrypted.
Encrypted
The condition of information being scrambled so that it can be read only by someone who has the appropriate key to unscramble it. Encryption can be applied to files or to information exchanged over a network connection.
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