mirror of
https://salsa.debian.org/freeipa-team/freeipa.git
synced 2024-12-25 08:21:05 -06:00
Migrate OTP import script to python-cryptography
https://fedorahosted.org/freeipa/ticket/5192 Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
This commit is contained in:
Nathaniel McCallum
Martin Basti
parent
3be696c92f
commit
d00ae870dd
@ -29,11 +29,15 @@ import struct
|
||||
from lxml import etree
|
||||
import dateutil.parser
|
||||
import dateutil.tz
|
||||
import nss.nss as nss
|
||||
import gssapi
|
||||
import six
|
||||
from six.moves import xrange
|
||||
|
||||
from cryptography.hazmat.primitives import hashes
|
||||
from cryptography.hazmat.primitives.kdf import pbkdf2
|
||||
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
|
||||
from cryptography.hazmat.backends import default_backend
|
||||
|
||||
from ipaplatform.paths import paths
|
||||
from ipapython import admintool
|
||||
from ipalib import api, errors
|
||||
@ -119,13 +123,13 @@ def convertAlgorithm(value):
|
||||
"Converts encryption URI to (mech, ivlen)."
|
||||
|
||||
return {
|
||||
"http://www.w3.org/2001/04/xmlenc#aes128-cbc": (nss.CKM_AES_CBC_PAD, 128),
|
||||
"http://www.w3.org/2001/04/xmlenc#aes192-cbc": (nss.CKM_AES_CBC_PAD, 192),
|
||||
"http://www.w3.org/2001/04/xmlenc#aes256-cbc": (nss.CKM_AES_CBC_PAD, 256),
|
||||
"http://www.w3.org/2001/04/xmlenc#tripledes-cbc": (nss.CKM_DES3_CBC_PAD, 64),
|
||||
"http://www.w3.org/2001/04/xmldsig-more#camellia128": (nss.CKM_CAMELLIA_CBC_PAD, 128),
|
||||
"http://www.w3.org/2001/04/xmldsig-more#camellia192": (nss.CKM_CAMELLIA_CBC_PAD, 192),
|
||||
"http://www.w3.org/2001/04/xmldsig-more#camellia256": (nss.CKM_CAMELLIA_CBC_PAD, 256),
|
||||
"http://www.w3.org/2001/04/xmlenc#aes128-cbc": (algorithms.AES, modes.CBC, 128),
|
||||
"http://www.w3.org/2001/04/xmlenc#aes192-cbc": (algorithms.AES, modes.CBC, 192),
|
||||
"http://www.w3.org/2001/04/xmlenc#aes256-cbc": (algorithms.AES, modes.CBC, 256),
|
||||
"http://www.w3.org/2001/04/xmlenc#tripledes-cbc": (algorithms.TripleDES, modes.CBC, 64),
|
||||
"http://www.w3.org/2001/04/xmldsig-more#camellia128": (algorithms.Camellia, modes.CBC, 128),
|
||||
"http://www.w3.org/2001/04/xmldsig-more#camellia192": (algorithms.Camellia, modes.CBC, 192),
|
||||
"http://www.w3.org/2001/04/xmldsig-more#camellia256": (algorithms.Camellia, modes.CBC, 256),
|
||||
|
||||
# TODO: add support for these formats.
|
||||
# "http://www.w3.org/2001/04/xmlenc#kw-aes128": "kw-aes128",
|
||||
@ -135,7 +139,7 @@ def convertAlgorithm(value):
|
||||
# "http://www.w3.org/2001/04/xmldsig-more#kw-camellia128": "kw-camellia128",
|
||||
# "http://www.w3.org/2001/04/xmldsig-more#kw-camellia192": "kw-camellia192",
|
||||
# "http://www.w3.org/2001/04/xmldsig-more#kw-camellia256": "kw-camellia256",
|
||||
}.get(value.lower(), (None, None))
|
||||
}.get(value.lower(), (None, None, None))
|
||||
|
||||
|
||||
def convertEncrypted(value, decryptor=None, pconv=base64.b64decode, econv=lambda x: x):
|
||||
@ -170,50 +174,29 @@ class PBKDF2KeyDerivation(XMLKeyDerivation):
|
||||
if params is None:
|
||||
raise ValueError("XML file is missing PBKDF2 parameters!")
|
||||
|
||||
self.salt = fetch(params, "./xenc11:Salt/xenc11:Specified/text()", base64.b64decode)
|
||||
self.iter = fetch(params, "./xenc11:IterationCount/text()", int)
|
||||
self.klen = fetch(params, "./xenc11:KeyLength/text()", int)
|
||||
self.hmod = fetch(params, "./xenc11:PRF/@Algorithm", convertHMACType, hashlib.sha1)
|
||||
salt = fetch(params, "./xenc11:Salt/xenc11:Specified/text()", base64.b64decode)
|
||||
itrs = fetch(params, "./xenc11:IterationCount/text()", int)
|
||||
klen = fetch(params, "./xenc11:KeyLength/text()", int)
|
||||
hmod = fetch(params, "./xenc11:PRF/@Algorithm", convertHMACType, hashlib.sha1)
|
||||
|
||||
if self.salt is None:
|
||||
if salt is None:
|
||||
raise ValueError("XML file is missing PBKDF2 salt!")
|
||||
|
||||
if self.iter is None:
|
||||
if itrs is None:
|
||||
raise ValueError("XML file is missing PBKDF2 iteration count!")
|
||||
|
||||
if self.klen is None:
|
||||
if klen is None:
|
||||
raise ValueError("XML file is missing PBKDF2 key length!")
|
||||
|
||||
self.kdf = pbkdf2.PBKDF2HMAC(
|
||||
algorithm=hmod,
|
||||
length=klen,
|
||||
salt=salt,
|
||||
iterations=itrs
|
||||
)
|
||||
|
||||
def derive(self, masterkey):
|
||||
mac = hmac.HMAC(masterkey, None, self.hmod)
|
||||
|
||||
# Figure out how many blocks we will have to combine
|
||||
# to expand the master key to the desired length.
|
||||
blocks = self.klen // mac.digest_size
|
||||
if self.klen % mac.digest_size != 0:
|
||||
blocks += 1
|
||||
|
||||
# Loop through each block adding it to the derived key.
|
||||
dk = []
|
||||
for i in range(1, blocks + 1):
|
||||
# Set initial values.
|
||||
last = self.salt + struct.pack('>I', i)
|
||||
hash = [0] * mac.digest_size
|
||||
|
||||
# Perform n iterations.
|
||||
for _j in xrange(self.iter):
|
||||
tmp = mac.copy()
|
||||
tmp.update(last)
|
||||
last = tmp.digest()
|
||||
|
||||
# XOR the previous hash with the new hash.
|
||||
for k in range(mac.digest_size):
|
||||
hash[k] ^= ord(last[k])
|
||||
|
||||
# Add block to derived key.
|
||||
dk.extend(hash)
|
||||
|
||||
return ''.join([chr(c) for c in dk])[:self.klen]
|
||||
return self.kdf.derive(masterkey)
|
||||
|
||||
|
||||
def convertKeyDerivation(value):
|
||||
@ -230,13 +213,17 @@ class XMLDecryptor(object):
|
||||
* RFC 6931"""
|
||||
|
||||
def __init__(self, key, hmac=None):
|
||||
self.__key = nss.SecItem(key)
|
||||
self.__key = key
|
||||
self.__hmac = hmac
|
||||
|
||||
def __call__(self, element, mac=None):
|
||||
(mech, ivlen) = fetch(element, "./xenc:EncryptionMethod/@Algorithm", convertAlgorithm)
|
||||
(algo, mode, klen) = fetch(element, "./xenc:EncryptionMethod/@Algorithm", convertAlgorithm)
|
||||
data = fetch(element, "./xenc:CipherData/xenc:CipherValue/text()", base64.b64decode)
|
||||
|
||||
# Make sure the key is the right length.
|
||||
if len(self.__key) * 8 != klen:
|
||||
raise ValidationError("Invalid key length!")
|
||||
|
||||
# If a MAC is present, perform validation.
|
||||
if mac:
|
||||
tmp = self.__hmac.copy()
|
||||
@ -244,13 +231,14 @@ class XMLDecryptor(object):
|
||||
if tmp.digest() != mac:
|
||||
raise ValidationError("MAC validation failed!")
|
||||
|
||||
# Decrypt the data.
|
||||
slot = nss.get_best_slot(mech)
|
||||
key = nss.import_sym_key(slot, mech, nss.PK11_OriginUnwrap, nss.CKA_ENCRYPT, self.__key)
|
||||
iv = nss.param_from_iv(mech, nss.SecItem(data[0:ivlen//8]))
|
||||
ctx = nss.create_context_by_sym_key(mech, nss.CKA_DECRYPT, key, iv)
|
||||
out = ctx.cipher_op(data[ivlen // 8:])
|
||||
out += ctx.digest_final()
|
||||
iv = data[:algo.block_size / 8]
|
||||
data = data[len(iv):]
|
||||
|
||||
cipher = Cipher(algo(self.__key), mode(iv))
|
||||
decryptor = cipher.decryptor()
|
||||
|
||||
out = decryptor.update(data)
|
||||
out += decryptor.finalize()
|
||||
return out
|
||||
|
||||
|
||||
@ -469,14 +457,6 @@ class OTPTokenImport(admintool.AdminTool):
|
||||
description = "Import OTP tokens."
|
||||
usage = "%prog [options] <PSKC file> <output file>"
|
||||
|
||||
@classmethod
|
||||
def main(cls, argv):
|
||||
nss.nss_init_nodb()
|
||||
try:
|
||||
super(OTPTokenImport, cls).main(argv)
|
||||
finally:
|
||||
nss.nss_shutdown()
|
||||
|
||||
@classmethod
|
||||
def add_options(cls, parser):
|
||||
super(OTPTokenImport, cls).add_options(parser)
|
||||
|
||||
@ -19,16 +19,13 @@
|
||||
|
||||
import os
|
||||
import pytest
|
||||
from nss import nss
|
||||
|
||||
from ipaserver.install.ipa_otptoken_import import PSKCDocument, ValidationError
|
||||
|
||||
basename = os.path.join(os.path.dirname(__file__), "data")
|
||||
|
||||
@pytest.mark.skipif(True, reason="Causes NSS errors. Ticket 5192")
|
||||
@pytest.mark.tier1
|
||||
class test_otptoken_import(object):
|
||||
|
||||
def test_figure3(self):
|
||||
doc = PSKCDocument(os.path.join(basename, "pskc-figure3.xml"))
|
||||
assert doc.keyname is None
|
||||
@ -63,62 +60,47 @@ class test_otptoken_import(object):
|
||||
assert False
|
||||
|
||||
def test_figure6(self):
|
||||
nss.nss_init_nodb()
|
||||
try:
|
||||
doc = PSKCDocument(os.path.join(basename, "pskc-figure6.xml"))
|
||||
assert doc.keyname == 'Pre-shared-key'
|
||||
doc.setKey('12345678901234567890123456789012'.decode('hex'))
|
||||
assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
|
||||
[(u'12345678', {
|
||||
'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
|
||||
'ipatokenvendor': u'Manufacturer',
|
||||
'ipatokenserial': u'987654321',
|
||||
'ipatokenhotpcounter': 0,
|
||||
'ipatokenotpdigits': 8,
|
||||
'type': u'hotp'})]
|
||||
finally:
|
||||
nss.nss_shutdown()
|
||||
doc = PSKCDocument(os.path.join(basename, "pskc-figure6.xml"))
|
||||
assert doc.keyname == 'Pre-shared-key'
|
||||
doc.setKey('12345678901234567890123456789012'.decode('hex'))
|
||||
assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
|
||||
[(u'12345678', {
|
||||
'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
|
||||
'ipatokenvendor': u'Manufacturer',
|
||||
'ipatokenserial': u'987654321',
|
||||
'ipatokenhotpcounter': 0,
|
||||
'ipatokenotpdigits': 8,
|
||||
'type': u'hotp'})]
|
||||
|
||||
def test_figure7(self):
|
||||
nss.nss_init_nodb()
|
||||
try:
|
||||
doc = PSKCDocument(os.path.join(basename, "pskc-figure7.xml"))
|
||||
assert doc.keyname == 'My Password 1'
|
||||
doc.setKey('qwerty')
|
||||
assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
|
||||
[(u'123456', {
|
||||
'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
|
||||
'ipatokenvendor': u'TokenVendorAcme',
|
||||
'ipatokenserial': u'987654321',
|
||||
'ipatokenotpdigits': 8,
|
||||
'type': u'hotp'})]
|
||||
finally:
|
||||
nss.nss_shutdown()
|
||||
doc = PSKCDocument(os.path.join(basename, "pskc-figure7.xml"))
|
||||
assert doc.keyname == 'My Password 1'
|
||||
doc.setKey('qwerty')
|
||||
assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
|
||||
[(u'123456', {
|
||||
'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
|
||||
'ipatokenvendor': u'TokenVendorAcme',
|
||||
'ipatokenserial': u'987654321',
|
||||
'ipatokenotpdigits': 8,
|
||||
'type': u'hotp'})]
|
||||
|
||||
def test_figure8(self):
|
||||
nss.nss_init_nodb()
|
||||
try:
|
||||
PSKCDocument(os.path.join(basename, "pskc-figure8.xml"))
|
||||
except NotImplementedError: # X.509 is not supported.
|
||||
pass
|
||||
else:
|
||||
assert False
|
||||
finally:
|
||||
nss.nss_shutdown()
|
||||
|
||||
def test_invalid(self):
|
||||
nss.nss_init_nodb()
|
||||
try:
|
||||
PSKCDocument(os.path.join(basename, "pskc-invalid.xml"))
|
||||
except ValueError: # File is invalid.
|
||||
pass
|
||||
else:
|
||||
assert False
|
||||
finally:
|
||||
nss.nss_shutdown()
|
||||
|
||||
def test_mini(self):
|
||||
nss.nss_init_nodb()
|
||||
try:
|
||||
doc = PSKCDocument(os.path.join(basename, "pskc-mini.xml"))
|
||||
for t in doc.getKeyPackages():
|
||||
@ -127,28 +109,22 @@ class test_otptoken_import(object):
|
||||
pass
|
||||
else:
|
||||
assert False
|
||||
finally:
|
||||
nss.nss_shutdown()
|
||||
|
||||
def test_full(self):
|
||||
nss.nss_init_nodb()
|
||||
try:
|
||||
doc = PSKCDocument(os.path.join(basename, "full.xml"))
|
||||
assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
|
||||
[(u'KID1', {
|
||||
'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
|
||||
'ipatokennotafter': u'20060531000000Z',
|
||||
'ipatokennotbefore': u'20060501000000Z',
|
||||
'ipatokenserial': u'SerialNo-IssueNo',
|
||||
'ipatokentotpclockoffset': 60000,
|
||||
'ipatokenotpalgorithm': u'sha1',
|
||||
'ipatokenvendor': u'iana.dummy',
|
||||
'description': u'FriendlyName',
|
||||
'ipatokentotptimestep': 200,
|
||||
'ipatokenhotpcounter': 0,
|
||||
'ipatokenmodel': u'Model',
|
||||
'ipatokenotpdigits': 8,
|
||||
'type': u'hotp',
|
||||
})]
|
||||
finally:
|
||||
nss.nss_shutdown()
|
||||
doc = PSKCDocument(os.path.join(basename, "full.xml"))
|
||||
assert [(t.id, t.options) for t in doc.getKeyPackages()] == \
|
||||
[(u'KID1', {
|
||||
'ipatokenotpkey': u'GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ',
|
||||
'ipatokennotafter': u'20060531000000Z',
|
||||
'ipatokennotbefore': u'20060501000000Z',
|
||||
'ipatokenserial': u'SerialNo-IssueNo',
|
||||
'ipatokentotpclockoffset': 60000,
|
||||
'ipatokenotpalgorithm': u'sha1',
|
||||
'ipatokenvendor': u'iana.dummy',
|
||||
'description': u'FriendlyName',
|
||||
'ipatokentotptimestep': 200,
|
||||
'ipatokenhotpcounter': 0,
|
||||
'ipatokenmodel': u'Model',
|
||||
'ipatokenotpdigits': 8,
|
||||
'type': u'hotp',
|
||||
})]
|
||||
|
||||
Loading…
Reference in New Issue
Block a user