def test_03_encrypt_bytes(self):
"""des_encrypt_block()"""
from passlib.crypto.des import (des_encrypt_block, shrink_des_key,
_pack64, _unpack64)
# run through test vectors
for key, plaintext, correct in self.des_test_vectors:
# convert to bytes
key = _pack64(key)
plaintext = _pack64(plaintext)
correct = _pack64(correct)
# test 64-bit key
result = des_encrypt_block(key, plaintext)
self.assertEqual(result, correct,
"key=%r plaintext=%r:" % (key, plaintext))
# test 56-bit version
key2 = shrink_des_key(key)
result = des_encrypt_block(key2, plaintext)
self.assertEqual(
result, correct,
"key=%r shrink(key)=%r plaintext=%r:" % (key, key2, plaintext))
# test with random parity bits
for _ in range(20):
key3 = _pack64(self._random_parity(_unpack64(key)))
result = des_encrypt_block(key3, plaintext)
self.assertEqual(
result, correct, "key=%r rndparity(key)=%r plaintext=%r:" %
(key, key3, plaintext))
# check invalid keys
stub = b'\x00' * 8
self.assertRaises(TypeError, des_encrypt_block, 0, stub)
self.assertRaises(ValueError, des_encrypt_block, b'\x00' * 6, stub)
# check invalid input
self.assertRaises(TypeError, des_encrypt_block, stub, 0)
self.assertRaises(ValueError, des_encrypt_block, stub, b'\x00' * 7)
# check invalid salts
self.assertRaises(ValueError, des_encrypt_block, stub, stub, salt=-1)
self.assertRaises(ValueError,
des_encrypt_block,
stub,
stub,
salt=1 << 24)
# check invalid rounds
self.assertRaises(ValueError,
des_encrypt_block,
stub,
stub,
0,
rounds=0)
def raw_lmhash(secret, encoding="ascii", hex=False):
"""encode password using des-based LMHASH algorithm; returns string of raw bytes, or unicode hex"""
# NOTE: various references say LMHASH uses the OEM codepage of the host
# for its encoding. until a clear reference is found,
# as well as a path for getting the encoding,
# letting this default to "ascii" to prevent incorrect hashes
# from being made w/o user explicitly choosing an encoding.
if isinstance(secret, unicode):
secret = secret.encode(encoding)
ns = secret.upper()[:14] + b"\x00" * (14 - len(secret))
out = des_encrypt_block(ns[:7], LM_MAGIC) + des_encrypt_block(ns[7:], LM_MAGIC)
return hexlify(out).decode("ascii") if hex else out
def des_cbc_encrypt(key, value, iv=b'\x00' * 8, pad=b'\x00'):
value += pad * (-len(value) % 8) # null pad to multiple of 8
hash = iv # start things off
for offset in xrange(0,len(value),8):
chunk = xor_bytes(hash, value[offset:offset+8])
hash = des_encrypt_block(key, chunk)
return hash
def test_03_encrypt_bytes(self):
"""des_encrypt_block()"""
from passlib.crypto.des import (des_encrypt_block, shrink_des_key,
_pack64, _unpack64)
# run through test vectors
for key, plaintext, correct in self.des_test_vectors:
# convert to bytes
key = _pack64(key)
plaintext = _pack64(plaintext)
correct = _pack64(correct)
# test 64-bit key
result = des_encrypt_block(key, plaintext)
self.assertEqual(result, correct, "key=%r plaintext=%r:" %
(key, plaintext))
# test 56-bit version
key2 = shrink_des_key(key)
result = des_encrypt_block(key2, plaintext)
self.assertEqual(result, correct, "key=%r shrink(key)=%r plaintext=%r:" %
(key, key2, plaintext))
# test with random parity bits
for _ in range(20):
key3 = _pack64(self._random_parity(_unpack64(key)))
result = des_encrypt_block(key3, plaintext)
self.assertEqual(result, correct, "key=%r rndparity(key)=%r plaintext=%r:" %
(key, key3, plaintext))
# check invalid keys
stub = b'\x00' * 8
self.assertRaises(TypeError, des_encrypt_block, 0, stub)
self.assertRaises(ValueError, des_encrypt_block, b'\x00'*6, stub)
# check invalid input
self.assertRaises(TypeError, des_encrypt_block, stub, 0)
self.assertRaises(ValueError, des_encrypt_block, stub, b'\x00'*7)
# check invalid salts
self.assertRaises(ValueError, des_encrypt_block, stub, stub, salt=-1)
self.assertRaises(ValueError, des_encrypt_block, stub, stub, salt=1<<24)
# check invalid rounds
self.assertRaises(ValueError, des_encrypt_block, stub, stub, 0, rounds=0)
def raw(cls, secret, encoding=None):
"""encode password using LANMAN hash algorithm.
:type secret: unicode or utf-8 encoded bytes
:arg secret: secret to hash
:type encoding: str
:arg encoding:
optional encoding to use for unicode inputs.
this defaults to ``cp437``, which is the
common case for most situations.
:returns: returns string of raw bytes
"""
if not encoding:
encoding = cls.default_encoding
# some nice empircal data re: different encodings is at...
# http://www.openwall.com/lists/john-dev/2011/08/01/2
# http://www.freerainbowtables.com/phpBB3/viewtopic.php?t=387&p=12163
from passlib.crypto.des import des_encrypt_block
MAGIC = cls._magic
if isinstance(secret, unicode):
# perform uppercasing while we're still unicode,
# to give a better shot at getting non-ascii chars right.
# (though some codepages do NOT upper-case the same as unicode).
secret = secret.upper().encode(encoding)
elif isinstance(secret, bytes):
# FIXME: just trusting ascii upper will work?
# and if not, how to do codepage specific case conversion?
# we could decode first using <encoding>,
# but *that* might not always be right.
secret = secret.upper()
else:
raise TypeError("secret must be unicode or bytes")
secret = right_pad_string(secret, 14)
return des_encrypt_block(secret[0:7], MAGIC) + des_encrypt_block(
secret[7:14], MAGIC)
def raw(cls, secret, encoding=None):
"""encode password using LANMAN hash algorithm.
:type secret: unicode or utf-8 encoded bytes
:arg secret: secret to hash
:type encoding: str
:arg encoding:
optional encoding to use for unicode inputs.
this defaults to ``cp437``, which is the
common case for most situations.
:returns: returns string of raw bytes
"""
if not encoding:
encoding = cls.default_encoding
# some nice empircal data re: different encodings is at...
# http://www.openwall.com/lists/john-dev/2011/08/01/2
# http://www.freerainbowtables.com/phpBB3/viewtopic.php?t=387&p=12163
from passlib.crypto.des import des_encrypt_block
MAGIC = cls._magic
if isinstance(secret, unicode):
# perform uppercasing while we're still unicode,
# to give a better shot at getting non-ascii chars right.
# (though some codepages do NOT upper-case the same as unicode).
secret = secret.upper().encode(encoding)
elif isinstance(secret, bytes):
# FIXME: just trusting ascii upper will work?
# and if not, how to do codepage specific case conversion?
# we could decode first using <encoding>,
# but *that* might not always be right.
secret = secret.upper()
else:
raise TypeError("secret must be unicode or bytes")
secret = right_pad_string(secret, 14)
return des_encrypt_block(secret[0:7], MAGIC) + \
des_encrypt_block(secret[7:14], MAGIC)
def des_cbc_encrypt(key, value, iv=b'\x00' * 8, pad=b'\x00'):
"""performs des-cbc encryption, returns only last block.
this performs a specific DES-CBC encryption implementation
as needed by the Oracle10 hash. it probably won't be useful for
other purposes as-is.
input value is null-padded to multiple of 8 bytes.
:arg key: des key as bytes
:arg value: value to encrypt, as bytes.
:param iv: optional IV
:param pad: optional pad byte
:returns: last block of DES-CBC encryption of all ``value``'s byte blocks.
"""
value += pad * (-len(value) % 8) # null pad to multiple of 8
hash = iv # start things off
for offset in irange(0, len(value), 8):
chunk = xor_bytes(hash, value[offset:offset + 8])
hash = des_encrypt_block(key, chunk)
return hash
def des_cbc_encrypt(key, value, iv=b'\x00' * 8, pad=b'\x00'):
"""performs des-cbc encryption, returns only last block.
this performs a specific DES-CBC encryption implementation
as needed by the Oracle10 hash. it probably won't be useful for
other purposes as-is.
input value is null-padded to multiple of 8 bytes.
:arg key: des key as bytes
:arg value: value to encrypt, as bytes.
:param iv: optional IV
:param pad: optional pad byte
:returns: last block of DES-CBC encryption of all ``value``'s byte blocks.
"""
value += pad * (-len(value) % 8) # null pad to multiple of 8
hash = iv # start things off
for offset in irange(0,len(value),8):
chunk = xor_bytes(hash, value[offset:offset+8])
hash = des_encrypt_block(key, chunk)
return hash
