/usr/share/doc/python3-pykcs11/examples/modulus.py is in python3-pykcs11 1.3.2-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | #!/usr/bin/env python
# Copyright (C) 2015 Roman Pasechnik
#
# This file 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.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
from PyKCS11 import *
import binascii
pkcs11 = PyKCS11Lib()
pkcs11.load("p11.framework/p11")
# get 2nd slot
slot = pkcs11.getSlotList()[1]
session = pkcs11.openSession(slot, CKF_SERIAL_SESSION | CKF_RW_SESSION)
session.login("11111111")
# key ID in hex (has to be tuple, that's why trailing comma)
keyID = (0x11,)
# find public key and print modulus
pubKey = session.findObjects([(CKA_CLASS, CKO_PUBLIC_KEY), (CKA_ID, keyID)])[0]
modulus = session.getAttributeValue(pubKey, [CKA_MODULUS])[0]
print "\nmodulus: " + binascii.hexlify(bytearray(modulus))
# logout
session.logout()
session.closeSession()
|