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#!/usr/bin/python
# $Id$
#
# This file is part of seppl.
#
# seppl is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# seppl 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
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with seppl; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
from seppl_common import *
import getopt, sys
def genkey(a, name, f):
n, b = find_alg_by_number(a)
if b == 0:
return -1
fd = open("/dev/random", "r+")
key = fd.read(b/8)
fd.close()
if (len(key) != b/8):
sys.stderr("ERROR: Cannot generate randomness.\n")
return
if f == dump_key_xml:
print "<seppl-keyring>"
f(a, name, key)
if f == dump_key_xml:
print "</seppl-keyring>"
return 0
algorithm = "aes"
bits = 128
name = "def"
func = dump_key_xml
def usage():
global algorithm, bits, name, func
x = { dump_key_xml : "disable", dump_key_bin : "enable" }
print "%s:" % sys.argv[0]
print " -h --help Show this help"
print " -x --no-xml No xml output (%s)" % x[func]
print " -a --algorithm ALGORITHM Specify algorithm (%s)" % algorithm
print " -b --bits BITS Specify key length (%s)" % bits
print " -n --name NAME Specify key name (%s)" % name
def main():
global algorithm, bits, name, func
try:
opts, args = getopt.getopt(sys.argv[1:], "hxa:b:n:", ["help", "no-xml", "algorithm=", "bits=", "name="])
except getopt.GetoptError:
usage()
sys.exit(1)
u = 0;
for o, a in opts:
if o in ("-h", "--help"):
u = 1
if o in ("-x", "--no-xml"):
func = dump_key_bin
if o in ("-a", "--algorithm"):
algorithm = a
if o in ("-b", "--bits"):
bits = int(a)
if o in ("-n", "--name"):
name = a[:7]
if u:
usage()
sys.exit(0)
a = find_alg_by_name(algorithm, bits)
if a == -1:
sys.stderr.write("ERROR: Cipher not available\n")
sys.exit(2)
genkey(a, name, func)
if __name__ == "__main__":
main()
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