---
name: "cpasswd"
section: "1"
platform: "linux"
package: "cfs"
version: "1.4.1-17"
release: "Debian 4.0 (Etch)"
platforms: ["linux"]
url: "https://new.carta.tech/cpasswd"
---

# cpasswd(1)

change passphrase on cfs directory

## NAME

cpasswd - change passphrase on cfs directory

## SYNOPSIS

**cpasswd** *directory*

## DESCRIPTION

**cpasswd** changes the passphrase associated with a Cryptographic File System (CFS) directory.  **cpasswd** prompts for the old passphrase, and, if it is correct, a new passphrase, which must be entered twice.  Passphrases must contain at least a minimum number of characters (currently 16).

Only new format (CFS 1.3 or later) directories can have their passphrases changed.

## FILES

- *directory*/...

  known-plaintext hash of the assigned keys.

- *directory*/..c

  identifies the cipher algorithm.

- *directory*/..k

  encrypted key file

## SEE ALSO

[cfsd(8)](/cfsd/8.md), [cattach(1)](/cattach/1.md), [cmkdir(1)](/cmkdir/1.md)

## BUGS

One passphrase per encrypted directory; there is no provision (yet) for individual users' passphrases.

## AUTHOR

Matt Blaze; for information on cfs, email to cfs@research.att.com.