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#!/usr/bin/env python
# Copyright (C) 2010 Sofian Brabez <sbz@6dev.net>
#
# This file is part of paramiko.
#
# Paramiko is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 2.1 of the License, or (at your option)
# any later version.
#
# Paramiko is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import sys
from binascii import hexlify
from optparse import OptionParser
from paramiko import DSSKey
from paramiko import RSAKey
from paramiko.ssh_exception import SSHException
from paramiko.py3compat import u
usage = """
%prog [-v] [-b bits] -t type [-N new_passphrase] [-f output_keyfile]"""
default_values = {
"ktype": "dsa",
"bits": 1024,
"filename": "output",
"comment": "",
}
key_dispatch_table = {"dsa": DSSKey, "rsa": RSAKey}
def progress(arg=None):
if not arg:
sys.stdout.write("0%\x08\x08\x08 ")
sys.stdout.flush()
elif arg[0] == "p":
sys.stdout.write("25%\x08\x08\x08\x08 ")
sys.stdout.flush()
elif arg[0] == "h":
sys.stdout.write("50%\x08\x08\x08\x08 ")
sys.stdout.flush()
elif arg[0] == "x":
sys.stdout.write("75%\x08\x08\x08\x08 ")
sys.stdout.flush()
if __name__ == "__main__":
phrase = None
pfunc = None
parser = OptionParser(usage=usage)
parser.add_option(
"-t",
"--type",
type="string",
dest="ktype",
help="Specify type of key to create (dsa or rsa)",
metavar="ktype",
default=default_values["ktype"],
)
parser.add_option(
"-b",
"--bits",
type="int",
dest="bits",
help="Number of bits in the key to create",
metavar="bits",
default=default_values["bits"],
)
parser.add_option(
"-N",
"--new-passphrase",
dest="newphrase",
help="Provide new passphrase",
metavar="phrase",
)
parser.add_option(
"-P",
"--old-passphrase",
dest="oldphrase",
help="Provide old passphrase",
metavar="phrase",
)
parser.add_option(
"-f",
"--filename",
type="string",
dest="filename",
help="Filename of the key file",
metavar="filename",
default=default_values["filename"],
)
parser.add_option(
"-q", "--quiet", default=False, action="store_false", help="Quiet"
)
parser.add_option(
"-v", "--verbose", default=False, action="store_true", help="Verbose"
)
parser.add_option(
"-C",
"--comment",
type="string",
dest="comment",
help="Provide a new comment",
metavar="comment",
default=default_values["comment"],
)
(options, args) = parser.parse_args()
if len(sys.argv) == 1:
parser.print_help()
sys.exit(0)
for o in list(default_values.keys()):
globals()[o] = getattr(options, o, default_values[o.lower()])
if options.newphrase:
phrase = getattr(options, "newphrase")
if options.verbose:
pfunc = progress
sys.stdout.write(
"Generating priv/pub %s %d bits key pair (%s/%s.pub)..."
% (ktype, bits, filename, filename)
)
sys.stdout.flush()
if ktype == "dsa" and bits > 1024:
raise SSHException("DSA Keys must be 1024 bits")
if ktype not in key_dispatch_table:
raise SSHException(
"Unknown %s algorithm to generate keys pair" % ktype
)
# generating private key
prv = key_dispatch_table[ktype].generate(bits=bits, progress_func=pfunc)
prv.write_private_key_file(filename, password=phrase)
# generating public key
pub = key_dispatch_table[ktype](filename=filename, password=phrase)
with open("%s.pub" % filename, "w") as f:
f.write("%s %s" % (pub.get_name(), pub.get_base64()))
if options.comment:
f.write(" %s" % comment)
if options.verbose:
print("done.")
hash = u(hexlify(pub.get_fingerprint()))
print(
"Fingerprint: %d %s %s.pub (%s)"
% (
bits,
":".join([hash[i : 2 + i] for i in range(0, len(hash), 2)]),
filename,
ktype.upper(),
)
)
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