Mercurial > p > roundup > code

annotate roundup/password.py @ 4486:693c75d56ebe

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add new config-option 'password_pbkdf2_default_rounds'... ...in 'main' section to configure the default parameter for new password generation. Set this to a higher value on faster systems which want more security. Thanks to Eli Collins for implementing this (see issue2550688). This now passes a config object (default None in which case we fall back to hard-coded parameters) into the password generation routine. This way we can add further parameters for password generation in the future. Also added a small regression test for this new feature.
author Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
date Fri, 15 Apr 2011 08:09:59 +0000
parents 95aace124a8e
children 357c6079c73b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1 #
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
2 # Copyright (c) 2001 Bizar Software Pty Ltd (http://www.bizarsoftware.com.au/)
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
3 # This module is free software, and you may redistribute it and/or modify
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
4 # under the same terms as Python, so long as this copyright message and
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
5 # disclaimer are retained in their original form.
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
6 #
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
7 # IN NO EVENT SHALL BIZAR SOFTWARE PTY LTD BE LIABLE TO ANY PARTY FOR
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
8 # DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
9 # OUT OF THE USE OF THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
10 # POSSIBILITY OF SUCH DAMAGE.
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
11 #
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
12 # BIZAR SOFTWARE PTY LTD SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
13 # BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
14 # FOR A PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS"
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
15 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
16 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
3434
1f860b50fa5f encodePassword: don't trim the salt string...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2277
diff changeset
17 #
3439
822a2719b81b keep plaintext password in Password object property (rfe [SF#1379447])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3434
diff changeset
18 # $Id: password.py,v 1.15 2005-12-25 15:38:40 a1s Exp $
406
bdc2ea127ae9 Added module docstrings to all modules.
Jürgen Hermann <jhermann@users.sourceforge.net>
parents: 302
diff changeset
19
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1905
diff changeset
20 """Password handling (encoding, decoding).
406
bdc2ea127ae9 Added module docstrings to all modules.
Jürgen Hermann <jhermann@users.sourceforge.net>
parents: 302
diff changeset
21 """
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1905
diff changeset
22 __docformat__ = 'restructuredtext'
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
23
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
24 import re, string, random
4480
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
25 from base64 import b64encode, b64decode
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
26 from roundup.anypy.hashlib_ import md5, sha1
1229
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
27 try:
1231
c0a40d7ec47c fix typo
Gordon B. McMillan <gmcm@users.sourceforge.net>
parents: 1229
diff changeset
28 import crypt
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
29 except ImportError:
1229
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
30 crypt = None
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
31
4480
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
32 _bempty = ""
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
33 _bjoin = _bempty.join
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
34
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
35 def getrandbytes(count):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
36 return _bjoin(chr(random.randint(0,255)) for i in xrange(count))
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
37
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
38 #NOTE: PBKDF2 hash is using this variant of base64 to minimize encoding size,
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
39 # and have charset that's compatible w/ unix crypt variants
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
40 def h64encode(data):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
41 """encode using variant of base64"""
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
42 return b64encode(data, "./").strip("=\n")
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
43
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
44 def h64decode(data):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
45 """decode using variant of base64"""
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
46 off = len(data) % 4
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
47 if off == 0:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
48 return b64decode(data, "./")
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
49 elif off == 1:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
50 raise ValueError("invalid bas64 input")
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
51 elif off == 2:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
52 return b64decode(data + "==", "./")
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
53 else:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
54 return b64decode(data + "=", "./")
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
55
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
56 try:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
57 from M2Crypto.EVP import pbkdf2 as _pbkdf2
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
58 except ImportError:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
59 #no m2crypto - make our own pbkdf2 function
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
60 from struct import pack
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
61 from hmac import HMAC
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
62 try:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
63 from hashlib import sha1
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
64 except ImportError:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
65 from sha import new as sha1
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
66
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
67 def xor_bytes(left, right):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
68 "perform bitwise-xor of two byte-strings"
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
69 return _bjoin(chr(ord(l) ^ ord(r)) for l, r in zip(left, right))
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
70
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
71 def _pbkdf2(password, salt, rounds, keylen):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
72 digest_size = 20 # sha1 generates 20-byte blocks
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
73 total_blocks = int((keylen+digest_size-1)/digest_size)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
74 hmac_template = HMAC(password, None, sha1)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
75 out = _bempty
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
76 for i in xrange(1, total_blocks+1):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
77 hmac = hmac_template.copy()
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
78 hmac.update(salt + pack(">L",i))
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
79 block = tmp = hmac.digest()
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
80 for j in xrange(rounds-1):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
81 hmac = hmac_template.copy()
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
82 hmac.update(tmp)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
83 tmp = hmac.digest()
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
84 #TODO: need to speed up this call
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
85 block = xor_bytes(block, tmp)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
86 out += block
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
87 return out[:keylen]
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
88
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
89 def pbkdf2(password, salt, rounds, keylen):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
90 """pkcs#5 password-based key derivation v2.0
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
91
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
92 :arg password: passphrase to use to generate key (if unicode, converted to utf-8)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
93 :arg salt: salt string to use when generating key (if unicode, converted to utf-8)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
94 :param rounds: number of rounds to use to generate key
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
95 :arg keylen: number of bytes to generate
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
96
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
97 If M2Crypto is present, uses it's implementation as backend.
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
98
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
99 :returns:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
100 raw bytes of generated key
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
101 """
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
102 if isinstance(password, unicode):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
103 password = password.encode("utf-8")
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
104 if isinstance(salt, unicode):
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
105 salt = salt.encode("utf-8")
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
106 if keylen > 40:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
107 #NOTE: pbkdf2 allows up to (2**31-1)*20 bytes,
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
108 # but m2crypto has issues on some platforms above 40,
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
109 # and such sizes aren't needed for a password hash anyways...
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
110 raise ValueError, "key length too large"
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
111 if rounds < 1:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
112 raise ValueError, "rounds must be positive number"
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
113 return _pbkdf2(password, salt, rounds, keylen)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
114
1905
dc43e339e607 Centralised conversion of user-input data to hyperdb values
Richard Jones <richard@users.sourceforge.net>
parents: 1583
diff changeset
115 class PasswordValueError(ValueError):
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
116 """ The password value is not valid """
1905
dc43e339e607 Centralised conversion of user-input data to hyperdb values
Richard Jones <richard@users.sourceforge.net>
parents: 1583
diff changeset
117 pass
dc43e339e607 Centralised conversion of user-input data to hyperdb values
Richard Jones <richard@users.sourceforge.net>
parents: 1583
diff changeset
118
4484
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
119 def pbkdf2_unpack(pbkdf2):
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
120 """ unpack pbkdf2 encrypted password into parts,
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
121 assume it has format "{rounds}${salt}${digest}
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
122 """
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
123 if isinstance(pbkdf2, unicode):
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
124 pbkdf2 = pbkdf2.encode("ascii")
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
125 try:
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
126 rounds, salt, digest = pbkdf2.split("$")
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
127 except ValueError:
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
128 raise PasswordValueError, "invalid PBKDF2 hash (wrong number of separators)"
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
129 if rounds.startswith("0"):
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
130 raise PasswordValueError, "invalid PBKDF2 hash (zero-padded rounds)"
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
131 try:
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
132 rounds = int(rounds)
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
133 except ValueError:
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
134 raise PasswordValueError, "invalid PBKDF2 hash (invalid rounds)"
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
135 raw_salt = h64decode(salt)
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
136 return rounds, salt, raw_salt, digest
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
137
4486
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
138 def encodePassword(plaintext, scheme, other=None, config=None):
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
139 """Encrypt the plaintext password.
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
140 """
1343
2e557762ee87 fixed handling of missing password [SF#655632]
Richard Jones <richard@users.sourceforge.net>
parents: 1231
diff changeset
141 if plaintext is None:
2e557762ee87 fixed handling of missing password [SF#655632]
Richard Jones <richard@users.sourceforge.net>
parents: 1231
diff changeset
142 plaintext = ""
4480
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
143 if scheme == "PBKDF2":
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
144 if other:
4484
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
145 rounds, salt, raw_salt, digest = pbkdf2_unpack(other)
4480
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
146 else:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
147 raw_salt = getrandbytes(20)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
148 salt = h64encode(raw_salt)
4486
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
149 if config:
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
150 rounds = config.PASSWORD_PBKDF2_DEFAULT_ROUNDS
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
151 else:
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
152 rounds = 10000
4480
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
153 if rounds < 1000:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
154 raise PasswordValueError, "invalid PBKDF2 hash (rounds too low)"
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
155 raw_digest = pbkdf2(plaintext, raw_salt, rounds, 20)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
156 return "%d$%s$%s" % (rounds, salt, h64encode(raw_digest))
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
157 elif scheme == 'SHA':
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
158 s = sha1(plaintext).hexdigest()
2277
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
159 elif scheme == 'MD5':
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
160 s = md5(plaintext).hexdigest()
1229
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
161 elif scheme == 'crypt' and crypt is not None:
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
162 if other is not None:
3434
1f860b50fa5f encodePassword: don't trim the salt string...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2277
diff changeset
163 salt = other
1229
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
164 else:
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
165 saltchars = './0123456789'+string.letters
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
166 salt = random.choice(saltchars) + random.choice(saltchars)
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
167 s = crypt.crypt(plaintext, salt)
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
168 elif scheme == 'plaintext':
1229
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
169 s = plaintext
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
170 else:
1905
dc43e339e607 Centralised conversion of user-input data to hyperdb values
Richard Jones <richard@users.sourceforge.net>
parents: 1583
diff changeset
171 raise PasswordValueError, 'unknown encryption scheme %r'%scheme
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
172 return s
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
173
1583
caae7d8934dc set new email rego user password to random string
Richard Jones <richard@users.sourceforge.net>
parents: 1343
diff changeset
174 def generatePassword(length=8):
caae7d8934dc set new email rego user password to random string
Richard Jones <richard@users.sourceforge.net>
parents: 1343
diff changeset
175 chars = string.letters+string.digits
caae7d8934dc set new email rego user password to random string
Richard Jones <richard@users.sourceforge.net>
parents: 1343
diff changeset
176 return ''.join([random.choice(chars) for x in range(length)])
caae7d8934dc set new email rego user password to random string
Richard Jones <richard@users.sourceforge.net>
parents: 1343
diff changeset
177
4483
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
178 class JournalPassword:
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
179 """ Password dummy instance intended for journal operation.
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
180 We do not store passwords in the journal any longer. The dummy
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
181 version only reads the encryption scheme from the given
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
182 encrypted password.
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
183 """
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
184 default_scheme = 'PBKDF2' # new encryptions use this scheme
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
185 pwre = re.compile(r'{(\w+)}(.+)')
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
186
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
187 def __init__ (self, encrypted=''):
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
188 if isinstance(encrypted, self.__class__):
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
189 self.scheme = encrypted.scheme or self.default_scheme
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
190 else:
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
191 m = self.pwre.match(encrypted)
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
192 if m:
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
193 self.scheme = m.group(1)
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
194 else:
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
195 self.scheme = self.default_scheme
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
196 self.password = ''
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
197
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
198 def dummystr(self):
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
199 """ return dummy string to store in journal
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
200 - reports scheme, but nothing else
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
201 """
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
202 return "{%s}*encrypted*" % (self.scheme,)
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
203
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
204 __str__ = dummystr
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
205
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
206 def __cmp__(self, other):
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
207 """Compare this password against another password."""
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
208 # check to see if we're comparing instances
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
209 if isinstance(other, self.__class__):
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
210 if self.scheme != other.scheme:
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
211 return cmp(self.scheme, other.scheme)
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
212 return cmp(self.password, other.password)
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
213
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
214 # assume password is plaintext
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
215 if self.password is None:
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
216 raise ValueError, 'Password not set'
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
217 return cmp(self.password, encodePassword(other, self.scheme,
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
218 self.password or None))
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
219
22bc0426e348 Second patch from issue2550688 -- with some changes:
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4480
diff changeset
220 class Password(JournalPassword):
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
221 """The class encapsulates a Password property type value in the database.
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
222
2277
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
223 The encoding of the password is one if None, 'SHA', 'MD5' or 'plaintext'.
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
224 The encodePassword function is used to actually encode the password from
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
225 plaintext. The None encoding is used in legacy databases where no
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
226 encoding scheme is identified.
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
227
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
228 The scheme is stored with the encoded data in the database:
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
229 {scheme}data
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
230
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
231 Example usage:
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
232 >>> p = Password('sekrit')
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
233 >>> p == 'sekrit'
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
234 1
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
235 >>> p != 'not sekrit'
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
236 1
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
237 >>> 'sekrit' == p
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
238 1
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
239 >>> 'not sekrit' != p
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
240 1
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
241 """
4480
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
242 #TODO: code to migrate from old password schemes.
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
243
4485
95aace124a8e use idea from Eli Collins to use a list of deprecated password encoding schemes
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4484
diff changeset
244 deprecated_schemes = ["SHA", "MD5", "crypt", "plaintext"]
95aace124a8e use idea from Eli Collins to use a list of deprecated password encoding schemes
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4484
diff changeset
245 known_schemes = ["PBKDF2"] + deprecated_schemes
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
246
4486
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
247 def __init__(self, plaintext=None, scheme=None, encrypted=None, strict=False, config=None):
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
248 """Call setPassword if plaintext is not None."""
1229
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
249 if scheme is None:
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
250 scheme = self.default_scheme
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
251 if plaintext is not None:
4486
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
252 self.setPassword (plaintext, scheme, config=config)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
253 elif encrypted is not None:
4486
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
254 self.unpack(encrypted, scheme, strict=strict, config=config)
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
255 else:
3439
822a2719b81b keep plaintext password in Password object property (rfe [SF#1379447])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3434
diff changeset
256 self.scheme = self.default_scheme
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
257 self.password = None
3439
822a2719b81b keep plaintext password in Password object property (rfe [SF#1379447])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3434
diff changeset
258 self.plaintext = None
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
259
4484
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
260 def needs_migration(self):
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
261 """ Password has insecure scheme or other insecure parameters
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
262 and needs migration to new password scheme
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
263 """
4485
95aace124a8e use idea from Eli Collins to use a list of deprecated password encoding schemes
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4484
diff changeset
264 if self.scheme in self.deprecated_schemes:
4484
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
265 return True
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
266 rounds, salt, raw_salt, digest = pbkdf2_unpack(self.password)
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
267 if rounds < 1000:
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
268 return True
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
269 return False
52e13bf0bb40 Add new config-option 'migrate_passwords' in section 'web'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4483
diff changeset
270
4486
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
271 def unpack(self, encrypted, scheme=None, strict=False, config=None):
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
272 """Set the password info from the scheme:<encryted info> string
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
273 (the inverse of __str__)
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
274 """
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
275 m = self.pwre.match(encrypted)
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
276 if m:
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
277 self.scheme = m.group(1)
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
278 self.password = m.group(2)
3439
822a2719b81b keep plaintext password in Password object property (rfe [SF#1379447])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3434
diff changeset
279 self.plaintext = None
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
280 else:
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
281 # currently plaintext - encrypt
4486
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
282 self.setPassword(encrypted, scheme, config=config)
4480
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
283 if strict and self.scheme not in self.known_schemes:
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
284 raise PasswordValueError, "unknown encryption scheme: %r" % (self.scheme,)
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
285
4486
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
286 def setPassword(self, plaintext, scheme=None, config=None):
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
287 """Sets encrypts plaintext."""
1229
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
288 if scheme is None:
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
289 scheme = self.default_scheme
3439
822a2719b81b keep plaintext password in Password object property (rfe [SF#1379447])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3434
diff changeset
290 self.scheme = scheme
4486
693c75d56ebe Add new config-option 'password_pbkdf2_default_rounds'...
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4485
diff changeset
291 self.password = encodePassword(plaintext, scheme, config=config)
3439
822a2719b81b keep plaintext password in Password object property (rfe [SF#1379447])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3434
diff changeset
292 self.plaintext = plaintext
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
293
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
294 def __str__(self):
4089
eddb82d0964c Add compatibility package to allow us to deal with Python versions 2.3..2.6.
Richard Jones <richard@users.sourceforge.net>
parents: 3439
diff changeset
295 """Stringify the encrypted password for database storage."""
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
296 if self.password is None:
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
297 raise ValueError, 'Password not set'
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
298 return '{%s}%s'%(self.scheme, self.password)
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
299
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
300 def test():
1229
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
301 # SHA
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
302 p = Password('sekrit')
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
303 assert p == 'sekrit'
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
304 assert p != 'not sekrit'
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
305 assert 'sekrit' == p
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
306 assert 'not sekrit' != p
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
307
2277
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
308 # MD5
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
309 p = Password('sekrit', 'MD5')
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
310 assert p == 'sekrit'
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
311 assert p != 'not sekrit'
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
312 assert 'sekrit' == p
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
313 assert 'not sekrit' != p
c9e52addda42 added MD5 scheme for password hiding
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
314
1229
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
315 # crypt
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
316 p = Password('sekrit', 'crypt')
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
317 assert p == 'sekrit'
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
318 assert p != 'not sekrit'
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
319 assert 'sekrit' == p
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
320 assert 'not sekrit' != p
5c581b120738 added "crypt" password encoding...
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
321
4480
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
322 # PBKDF2 - low level function
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
323 from binascii import unhexlify
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
324 k = pbkdf2("password", "ATHENA.MIT.EDUraeburn", 1200, 32)
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
325 assert k == unhexlify("5c08eb61fdf71e4e4ec3cf6ba1f5512ba7e52ddbc5e5142f708a31e2e62b1e13")
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
326
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
327 # PBKDF2 - hash function
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
328 h = "5000$7BvbBq.EZzz/O0HuwX3iP.nAG3s$g3oPnFFaga2BJaX5PoPRljl4XIE"
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
329 assert encodePassword("sekrit", "PBKDF2", h) == h
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
330
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
331 # PBKDF2 - high level integration
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
332 p = Password('sekrit', 'PBKDF2')
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
333 assert p == 'sekrit'
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
334 assert p != 'not sekrit'
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
335 assert 'sekrit' == p
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
336 assert 'not sekrit' != p
1613754d2646 Fix first part of Password handling security issue2550688
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4089
diff changeset
337
270
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
338 if __name__ == '__main__':
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
339 test()
a4241ddd22d7 Added the Password property type.
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
340
3434
1f860b50fa5f encodePassword: don't trim the salt string...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2277
diff changeset
341 # vim: set filetype=python sts=4 sw=4 et si :
Roundup Issue Tracker: http://roundup-tracker.org/