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Microsoft DOS cipher command

Quick links

About cipher
Availability
Syntax
Examples

About cipher

Displays or alters the encryption of directories [files] on NTFS partitions.

See our cipher dictionary definition for additional information about this term.

Availability

The cipher.exe command is an external command that is available in the below Microsoft operating systems. 

Windows 2000
Windows XP

Index

Category:
MS-DOS

Companies:
Microsoft

Related Pages:
Operating systems

Resolved

Were you able to locate the answer to your questions?

Syntax

Displays or alters the encryption of directories [files] on NTFS partitions.

CIPHER [/E | /D] [/S:dir] [/A] [/I] [/F] [/Q] [/H] [/K] [pathname [...]]

CIPHER /W:directory

CIPHER /X[:efsfile] [filename]

/E Encrypts the specified directories. Directories will be marked so that files added afterward will be encrypted.
/D Decrypts the specified directories. Directories will be marked so that files added afterward will not be encrypted.
/S Performs the specified operation on directories in the given directory and all subdirectories.
/A Operation for files as well as directories. The encrypted file could become decrypted when it is modified if the parent directory is not encrypted. It is recommended that you encrypt the file and the parent directory.
/I Continues performing the specified operation even after errors
have occurred. By default, CIPHER stops when an error is
encountered.
/F Forces the encryption operation on all specified objects, even those which are already encrypted. Already-encrypted objects are skipped by default.
/Q Reports only the most essential information.
/H Displays files with the hidden or system attributes. These files are omitted by default.
/K Create new file encryption key for the user running CIPHER. If this option is chosen, all the other options will be ignored.
/W Removes data from available unused disk space on the entire
volume. If this option is chosen, all other options are ignored.
The directory specified can be anywhere in a local volume. If it
is a mount point or points to a directory in another volume, the
data on that volume will be removed.
/X Backup EFS certificate and keys into file filename. If efsfile is provided, the current user's certificate(s) used to encrypt the file will be backed up. Otherwise, the user's current EFS certificate and keys will be backed up.
dir A directory path.
pathname Specifies a pattern, file or directory.
efsfile An encrypted file path.

Used without parameters, CIPHER displays the encryption state of the current directory and any files it contains. You may use multiple directory names and wildcards. You must put spaces between multiple parameters.

Examples

Display the status of each of the files in the current directory.

cipher

For example, running the above command may display something similar to the below example.

C:\DOCUME~1\ADMINI~1\Desktop>cipher

Listing C:\DOCUME~1\ADMINI~1\Desktop\
New files added to this directory will not be encrypted.

U 308374_harddisk_3.jpg
U cipher.txt
U FileZilla.lnk
U hope.txt
U inc
U l-gloss.pdf
U logos.gif
U Main_Page.htm
U Main_Page_files
U maxivistademo.zip
U move

Next, if we wanted to enable encryption on a directory, type a command similar to the below command. In the below example this is encrypting the hope directory and will encrypt any files added into that directory after the encryption has been enabled.

cipher /e hope

Encrypting directories in C:\DOCUME~1\ADMINI~1\Desktop\

test [OK]

1 directorie(s) within 1 directorie(s) were encrypted.

 

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