ckeygen [-b bits] [-f filename] [-t type] [-C comment] [-N new passphrase] [-P old passphrase] [-l] [-p] [-q] [-y]


The --help prints out a usage message to standard output.

-b, --bits <bits>

Number of bits in the key to create (default: 1024)

-f, --filename <file name>

Filename of the key file.

-t, --type <type>

Type of key (rsa or dsa).

-C, --comment <comment>

Provide a new comment.

-N, --newpass <pass phrase>

Provide new passphrase.

-P, --pass <pass phrase>

Provide old passphrase.

-l, --fingerprint

Show fingerprint of key file.

-p, --changepass

Change passphrase of private key file.

-q, --quiet

Be quiet.


Create the key with no passphrase.

-y, --showpub

Read private key file and print public key.


Display version number only.


Manipulate public/private keys in various ways. If no filename is given, a file name will be requested interactively.


Written by Moshe Zadka, based on ckeygen's help messages


To report a bug, visit


Copyright © 2002-2011 Twisted Matrix Laboratories.

This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

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