prosody
ce52f1d5cb74
util/sasl/scram.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/sasl/scram.lua @ 3374:ce52f1d5cb74

util.sasl.scram: Reference actual RFC instead of the draft.
author Tobias Markmann <tm@ayena.de>
date Thu, 15 Jul 2010 21:14:07 +0200
parent 3206:ff1d3f751da1
child 3405:b1efe62c3c37
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
1 -- sasl.lua v0.4
3094
5f625411b463 util.sasl: 2009 -> 2010 in copyright header.
Tobias Markmann <tm@ayena.de>
parents: 2648
diff changeset
2 -- Copyright (C) 2008-2010 Tobias Markmann
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
3 --
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
4 -- All rights reserved.
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
5 --
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
6 -- Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
7 --
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
8 -- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
9 -- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
10 -- * Neither the name of Tobias Markmann nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
11 --
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
12 -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
13
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
14 local s_match = string.match;
2198
d18b4d22b8da Making interop with libpurple. (Thanks darkrain).
Tobias Markmann <tm@ayena.de>
parents: 2197
diff changeset
15 local type = type
d18b4d22b8da Making interop with libpurple. (Thanks darkrain).
Tobias Markmann <tm@ayena.de>
parents: 2197
diff changeset
16 local string = string
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
17 local base64 = require "util.encodings".base64;
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
18 local hmac_sha1 = require "util.hmac".sha1;
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
19 local sha1 = require "util.hashes".sha1;
2196
614c839c30c5 Completed SCRAM-SHA-1 implementation to a ready-to-test state.
Tobias Markmann <tm@ayena.de>
parents: 2194
diff changeset
20 local generate_uuid = require "util.uuid".generate;
2199
08a6b91bfe7b SASLprep usernames and passwords.
Tobias Markmann <tm@ayena.de>
parents: 2198
diff changeset
21 local saslprep = require "util.encodings".stringprep.saslprep;
08a6b91bfe7b SASLprep usernames and passwords.
Tobias Markmann <tm@ayena.de>
parents: 2198
diff changeset
22 local log = require "util.logger".init("sasl");
2314
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
23 local t_concat = table.concat;
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
24 local char = string.char;
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
25 local byte = string.byte;
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
26
2206
Tobias Markmann <tm@ayena.de>
parents: 2205
diff changeset
27 module "scram"
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
28
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
29 --=========================
3374
ce52f1d5cb74 util.sasl.scram: Reference actual RFC instead of the draft.
Tobias Markmann <tm@ayena.de>
parents: 3206
diff changeset
30 --SASL SCRAM-SHA-1 according to RFC 5802
3097
9341ef1a3345 util.sasl.scram: Adding documentation on SCRAM authentication backend.
Tobias Markmann <tm@ayena.de>
parents: 3096
diff changeset
31
9341ef1a3345 util.sasl.scram: Adding documentation on SCRAM authentication backend.
Tobias Markmann <tm@ayena.de>
parents: 3096
diff changeset
32 --[[
9341ef1a3345 util.sasl.scram: Adding documentation on SCRAM authentication backend.
Tobias Markmann <tm@ayena.de>
parents: 3096
diff changeset
33 Supported Authentication Backends
9341ef1a3345 util.sasl.scram: Adding documentation on SCRAM authentication backend.
Tobias Markmann <tm@ayena.de>
parents: 3096
diff changeset
34
3122
579f17b9f948 util.sasl.*: Adjusting authentication provider names. All '-' replaced with '_'
Tobias Markmann <tm@ayena.de>
parents: 3118
diff changeset
35 scram_{MECH}:
579f17b9f948 util.sasl.*: Adjusting authentication provider names. All '-' replaced with '_'
Tobias Markmann <tm@ayena.de>
parents: 3118
diff changeset
36 -- MECH being a standard hash name (like those at IANA's hash registry) with '-' replaced with '_'
3097
9341ef1a3345 util.sasl.scram: Adding documentation on SCRAM authentication backend.
Tobias Markmann <tm@ayena.de>
parents: 3096
diff changeset
37 function(username, realm)
3205
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3196
diff changeset
38 return stored_key, server_key, iteration_count, salt, state;
3097
9341ef1a3345 util.sasl.scram: Adding documentation on SCRAM authentication backend.
Tobias Markmann <tm@ayena.de>
parents: 3096
diff changeset
39 end
9341ef1a3345 util.sasl.scram: Adding documentation on SCRAM authentication backend.
Tobias Markmann <tm@ayena.de>
parents: 3096
diff changeset
40 ]]
9341ef1a3345 util.sasl.scram: Adding documentation on SCRAM authentication backend.
Tobias Markmann <tm@ayena.de>
parents: 3096
diff changeset
41
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
42 local default_i = 4096
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
43
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
44 local function bp( b )
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
45 local result = ""
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
46 for i=1, b:len() do
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
47 result = result.."\\"..b:byte(i)
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
48 end
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
49 return result
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
50 end
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
51
2314
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
52 local xor_map = {0;1;2;3;4;5;6;7;8;9;10;11;12;13;14;15;1;0;3;2;5;4;7;6;9;8;11;10;13;12;15;14;2;3;0;1;6;7;4;5;10;11;8;9;14;15;12;13;3;2;1;0;7;6;5;4;11;10;9;8;15;14;13;12;4;5;6;7;0;1;2;3;12;13;14;15;8;9;10;11;5;4;7;6;1;0;3;2;13;12;15;14;9;8;11;10;6;7;4;5;2;3;0;1;14;15;12;13;10;11;8;9;7;6;5;4;3;2;1;0;15;14;13;12;11;10;9;8;8;9;10;11;12;13;14;15;0;1;2;3;4;5;6;7;9;8;11;10;13;12;15;14;1;0;3;2;5;4;7;6;10;11;8;9;14;15;12;13;2;3;0;1;6;7;4;5;11;10;9;8;15;14;13;12;3;2;1;0;7;6;5;4;12;13;14;15;8;9;10;11;4;5;6;7;0;1;2;3;13;12;15;14;9;8;11;10;5;4;7;6;1;0;3;2;14;15;12;13;10;11;8;9;6;7;4;5;2;3;0;1;15;14;13;12;11;10;9;8;7;6;5;4;3;2;1;0;};
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
53
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
54 local result = {};
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
55 local function binaryXOR( a, b )
2314
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
56 for i=1, #a do
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
57 local x, y = byte(a, i), byte(b, i);
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
58 local lowx, lowy = x % 16, y % 16;
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
59 local hix, hiy = (x - lowx) / 16, (y - lowy) / 16;
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
60 local lowr, hir = xor_map[lowx * 16 + lowy + 1], xor_map[hix * 16 + hiy + 1];
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
61 local r = hir * 16 + lowr;
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
62 result[i] = char(r)
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
63 end
2314
c2e1bde4d84d Redo merge with Waqas' PBKDF2 optimizations.
Tobias Markmann <tm@ayena.de>
parents: 2290
diff changeset
64 return t_concat(result);
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
65 end
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
66
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
67 -- hash algorithm independent Hi(PBKDF2) implementation
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
68 local function Hi(hmac, str, salt, i)
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
69 local Ust = hmac(str, salt.."\0\0\0\1");
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
70 local res = Ust;
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
71 for n=1,i-1 do
2255
92e329e1cd99 Make some more variables to locals.
Tobias Markmann <tm@ayena.de>
parents: 2210
diff changeset
72 local Und = hmac(str, Ust)
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
73 res = binaryXOR(res, Und)
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
74 Ust = Und
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
75 end
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
76 return res
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
77 end
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
78
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
79 local function validate_username(username)
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
80 -- check for forbidden char sequences
2198
d18b4d22b8da Making interop with libpurple. (Thanks darkrain).
Tobias Markmann <tm@ayena.de>
parents: 2197
diff changeset
81 for eq in username:gmatch("=(.?.?)") do
d18b4d22b8da Making interop with libpurple. (Thanks darkrain).
Tobias Markmann <tm@ayena.de>
parents: 2197
diff changeset
82 if eq ~= "2D" and eq ~= "3D" then
d18b4d22b8da Making interop with libpurple. (Thanks darkrain).
Tobias Markmann <tm@ayena.de>
parents: 2197
diff changeset
83 return false
d18b4d22b8da Making interop with libpurple. (Thanks darkrain).
Tobias Markmann <tm@ayena.de>
parents: 2197
diff changeset
84 end
d18b4d22b8da Making interop with libpurple. (Thanks darkrain).
Tobias Markmann <tm@ayena.de>
parents: 2197
diff changeset
85 end
d18b4d22b8da Making interop with libpurple. (Thanks darkrain).
Tobias Markmann <tm@ayena.de>
parents: 2197
diff changeset
86
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
87 -- replace =2D with , and =3D with =
2265
7fe644057dc2 util.sasl.scram: Making =2D and =3D substitution actually work.
Tobias Markmann <tm@ayena.de>
parents: 2255
diff changeset
88 username = username:gsub("=2D", ",");
7fe644057dc2 util.sasl.scram: Making =2D and =3D substitution actually work.
Tobias Markmann <tm@ayena.de>
parents: 2255
diff changeset
89 username = username:gsub("=3D", "=");
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
90
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
91 -- apply SASLprep
2199
08a6b91bfe7b SASLprep usernames and passwords.
Tobias Markmann <tm@ayena.de>
parents: 2198
diff changeset
92 username = saslprep(username);
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
93 return username;
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
94 end
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
95
3155
c713fa2ba80c SASL: Minor cleanup.
Waqas Hussain <waqas20@gmail.com>
parents: 3154
diff changeset
96 local function hashprep(hashname)
c713fa2ba80c SASL: Minor cleanup.
Waqas Hussain <waqas20@gmail.com>
parents: 3154
diff changeset
97 return hashname:lower():gsub("-", "_");
3122
579f17b9f948 util.sasl.*: Adjusting authentication provider names. All '-' replaced with '_'
Tobias Markmann <tm@ayena.de>
parents: 3118
diff changeset
98 end
579f17b9f948 util.sasl.*: Adjusting authentication provider names. All '-' replaced with '_'
Tobias Markmann <tm@ayena.de>
parents: 3118
diff changeset
99
3205
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3196
diff changeset
100 function getAuthenticationDatabaseSHA1(password, salt, iteration_count)
3118
95ddd75ed3c5 util.sasl.scram: Fixing logic error in argument checking.
Tobias Markmann <tm@ayena.de>
parents: 3107
diff changeset
101 if type(password) ~= "string" or type(salt) ~= "string" or type(iteration_count) ~= "number" then
3104
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
102 return false, "inappropriate argument types"
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
103 end
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
104 if iteration_count < 4096 then
3194
b308450740b0 util.sasl.scram: Fixed a log level.
Waqas Hussain <waqas20@gmail.com>
parents: 3123
diff changeset
105 log("warn", "Iteration count < 4096 which is the suggested minimum according to RFC 5802.")
3104
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
106 end
3205
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3196
diff changeset
107 local salted_password = Hi(hmac_sha1, password, salt, iteration_count);
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3196
diff changeset
108 local stored_key = sha1(hmac_sha1(salted_password, "Client Key"))
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3196
diff changeset
109 local server_key = hmac_sha1(salted_password, "Server Key");
2dcd826bbbc6 mod_auth_internal_hashed: Store StoredKey and ServerKey instead of salted hashed password.
Tobias Markmann <tm@ayena.de>
parents: 3196
diff changeset
110 return true, stored_key, server_key
3104
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
111 end
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
112
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
113 local function scram_gen(hash_name, H_f, HMAC_f)
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
114 local function scram_hash(self, message)
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
115 if not self.state then self["state"] = {} end
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
116
3106
f4341cac3ae1 util.sasl.scram: Fixing issue #177.
Tobias Markmann <tm@ayena.de>
parents: 3104
diff changeset
117 if type(message) ~= "string" or #message == 0 then return "failure", "malformed-request" end
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
118 if not self.state.name then
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
119 -- we are processing client_first_message
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
120 local client_first_message = message;
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
121
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
122 -- TODO: fail if authzid is provided, since we don't support them yet
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
123 self.state["client_first_message"] = client_first_message;
3103
87cf90ca8923 util.sasl.scram: Split up long line.
Tobias Markmann <tm@ayena.de>
parents: 3102
diff changeset
124 self.state["gs2_cbind_flag"], self.state["authzid"], self.state["name"], self.state["clientnonce"]
87cf90ca8923 util.sasl.scram: Split up long line.
Tobias Markmann <tm@ayena.de>
parents: 3102
diff changeset
125 = client_first_message:match("^(%a),(.*),n=(.*),r=([^,]*).*");
3100
6731dff05c99 util.sasl.scram: Parsing client-first-message in a more strict way. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3099
diff changeset
126
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
127 -- we don't do any channel binding yet
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
128 if self.state.gs2_cbind_flag ~= "n" and self.state.gs2_cbind_flag ~= "y" then
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
129 return "failure", "malformed-request";
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
130 end
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
131
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
132 if not self.state.name or not self.state.clientnonce then
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
133 return "failure", "malformed-request", "Channel binding isn't support at this time.";
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
134 end
2199
08a6b91bfe7b SASLprep usernames and passwords.
Tobias Markmann <tm@ayena.de>
parents: 2198
diff changeset
135
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
136 self.state.name = validate_username(self.state.name);
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
137 if not self.state.name then
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
138 log("debug", "Username violates either SASLprep or contains forbidden character sequences.")
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
139 return "failure", "malformed-request", "Invalid username.";
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
140 end
2196
614c839c30c5 Completed SCRAM-SHA-1 implementation to a ready-to-test state.
Tobias Markmann <tm@ayena.de>
parents: 2194
diff changeset
141
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
142 self.state["servernonce"] = generate_uuid();
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
143
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
144 -- retreive credentials
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
145 if self.profile.plain then
3098
e5d349c0acde util.sasl.scram: Fixed global access.
Waqas Hussain <waqas20@gmail.com>
parents: 3097
diff changeset
146 local password, state = self.profile.plain(self.state.name, self.realm)
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
147 if state == nil then return "failure", "not-authorized"
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
148 elseif state == false then return "failure", "account-disabled" end
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
149
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
150 password = saslprep(password);
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
151 if not password then
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
152 log("debug", "Password violates SASLprep.");
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
153 return "failure", "not-authorized", "Invalid password."
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
154 end
3104
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
155
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
156 self.state.salt = generate_uuid();
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
157 self.state.iteration_count = default_i;
3104
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
158
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
159 local succ = false;
3206
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
160 succ, self.state.stored_key, self.state.server_key = getAuthenticationDatabaseSHA1(password, self.state.salt, default_i, self.state.iteration_count);
3104
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
161 if not succ then
3206
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
162 log("error", "Generating authentication database failed. Reason: %s", self.state.stored_key);
3104
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
163 return "failure", "temporary-auth-failure";
32150b4a8603 util.sasl.scram: Providing an API function to generate a salted password for the SCRAM-SHA-1 mechanism.
Tobias Markmann <tm@ayena.de>
parents: 3103
diff changeset
164 end
3122
579f17b9f948 util.sasl.*: Adjusting authentication provider names. All '-' replaced with '_'
Tobias Markmann <tm@ayena.de>
parents: 3118
diff changeset
165 elseif self.profile["scram_"..hashprep(hash_name)] then
3206
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
166 local stored_key, server_key, iteration_count, salt, state = self.profile["scram_"..hashprep(hash_name)](self.state.name, self.realm);
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
167 if state == nil then return "failure", "not-authorized"
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
168 elseif state == false then return "failure", "account-disabled" end
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
169
3206
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
170 self.state.stored_key = stored_key;
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
171 self.state.server_key = server_key;
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
172 self.state.iteration_count = iteration_count;
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
173 self.state.salt = salt
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
174 end
2196
614c839c30c5 Completed SCRAM-SHA-1 implementation to a ready-to-test state.
Tobias Markmann <tm@ayena.de>
parents: 2194
diff changeset
175
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
176 local server_first_message = "r="..self.state.clientnonce..self.state.servernonce..",s="..base64.encode(self.state.salt)..",i="..self.state.iteration_count;
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
177 self.state["server_first_message"] = server_first_message;
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
178 return "challenge", server_first_message
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
179 else
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
180 -- we are processing client_final_message
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
181 local client_final_message = message;
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
182
3102
5cd408e36359 util.sasl.scram: Parsing client-final-message in a more strict way. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3101
diff changeset
183 self.state["channelbinding"], self.state["nonce"], self.state["proof"] = client_final_message:match("^c=(.*),r=(.*),.*p=(.*)");
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
184
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
185 if not self.state.proof or not self.state.nonce or not self.state.channelbinding then
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
186 return "failure", "malformed-request", "Missing an attribute(p, r or c) in SASL message.";
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
187 end
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
188
3101
9e4439378cf8 util.sasl.scram: Fix in nonce check of client-final-message.
Tobias Markmann <tm@ayena.de>
parents: 3100
diff changeset
189 if self.state.nonce ~= self.state.clientnonce..self.state.servernonce then
9e4439378cf8 util.sasl.scram: Fix in nonce check of client-final-message.
Tobias Markmann <tm@ayena.de>
parents: 3100
diff changeset
190 return "failure", "malformed-request", "Wrong nonce in client-final-message.";
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
191 end
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
192
3206
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
193 local ServerKey = self.state.server_key;
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
194 local StoredKey = self.state.stored_key;
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
195
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
196 local AuthMessage = "n=" .. s_match(self.state.client_first_message,"n=(.+)") .. "," .. self.state.server_first_message .. "," .. s_match(client_final_message, "(.+),p=.+")
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
197 local ClientSignature = HMAC_f(StoredKey, AuthMessage)
3206
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
198 local ClientKey = binaryXOR(ClientSignature, base64.decode(self.state.proof))
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
199 local ServerSignature = HMAC_f(ServerKey, AuthMessage)
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
200
3206
ff1d3f751da1 util.sasl.scram: Authenticate clients by calculated StoredKey instead of ClientProof.
Tobias Markmann <tm@ayena.de>
parents: 3205
diff changeset
201 if StoredKey == H_f(ClientKey) then
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
202 local server_final_message = "v="..base64.encode(ServerSignature);
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
203 self["username"] = self.state.name;
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
204 return "success", server_final_message;
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
205 else
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
206 return "failure", "not-authorized", "The response provided by the client doesn't match the one we calculated.";
2199
08a6b91bfe7b SASLprep usernames and passwords.
Tobias Markmann <tm@ayena.de>
parents: 2198
diff changeset
207 end
2196
614c839c30c5 Completed SCRAM-SHA-1 implementation to a ready-to-test state.
Tobias Markmann <tm@ayena.de>
parents: 2194
diff changeset
208 end
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
209 end
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
210 return scram_hash;
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
211 end
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
212
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
213 function init(registerMechanism)
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
214 local function registerSCRAMMechanism(hash_name, hash, hmac_hash)
3122
579f17b9f948 util.sasl.*: Adjusting authentication provider names. All '-' replaced with '_'
Tobias Markmann <tm@ayena.de>
parents: 3118
diff changeset
215 registerMechanism("SCRAM-"..hash_name, {"plain", "scram_"..(hashprep(hash_name))}, scram_gen(hash_name:lower(), hash, hmac_hash));
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
216 end
3099
2c4d06e7e3d3 util.sasl.scram: Check nonce in client final message. Check channel binding flag in client first message. Adding some TODOs on more strict parsing. (thanks Marc Santamaria)
Tobias Markmann <tm@ayena.de>
parents: 3098
diff changeset
217
3096
e69282792686 util.sasl: Abstracting out the hash function used since SCRAM is independent of it. Adding scram-{mech} authentication backend support.
Tobias Markmann <tm@ayena.de>
parents: 3094
diff changeset
218 registerSCRAMMechanism("SHA-1", sha1, hmac_sha1);
2194
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
219 end
41d42d253a1d Initial commit of SCRAM SASL mechanism.
Tobias Markmann <tm@ayena.de>
parents:
diff changeset
220
3107
6d576a66ca63 util.sasl.scram: Adjusting authentication backend name to conform with the style already used by the plain module.
Tobias Markmann <tm@ayena.de>
parents: 3106
diff changeset
221 return _M;