ckeygen --version (return code: 0)
Twisted version: 16.0.0
ckeygen --help (return code: 0)
Usage: ckeygen [options]
Options:
-l, --fingerprint Show fingerprint of key file.
-p, --changepass Change passphrase of private key file.
-q, --quiet Quiet.
--no-passphrase Create the key with no passphrase.
-y, --showpub Read private key file and print public key.
-b, --bits= Number of bits in the key to create. [default: 1024]
-f, --filename= Filename of the key file.
-t, --type= Specify type of key to create.
-C, --comment= Provide new comment.
-N, --newpass= Provide new passphrase.
-P, --pass= Provide old passphrase.
--version Display Twisted version and exit.
--help Display this help and exit.
ckeygen manipulates public/private keys in various ways.