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dangerousbeans / %aPBe2k3ugtjBr4rrsU1…



Commit a548e49bf23003f0da89137eecb2a2d0779da38a

Initial checkin.

git-svn-id: http://bcrypt-ruby.rubyforge.org/svn/trunk@1 b1e0f299-433e-4bb3-9895-84128a6cfb6a
codahale committed on 2/27/2007, 7:58:30 PM

Files changed

COPYINGadded
READMEadded
Rakefileadded
ext/bcrypt.cadded
ext/bcrypt_ext.cadded
ext/blf.hadded
ext/blowfish.cadded
ext/extconf.rbadded
lib/bcrypt.rbadded
spec/bcrypt/bcrypt_spec.rbadded
spec/bcrypt/internals_spec.rbadded
spec/bcrypt/password_spec.rbadded
spec/spec_helper.rbadded
COPYINGView
@@ -1,0 +1,32 @@
1 +Copyright 2007 Coda Hale <coda.hale@gmail.com>
2 +
3 +This product includes software developed by Niels Provos.
4 +
5 +All rights reserved.
6 +
7 +Redistribution and use in source and binary forms, with or without
8 +modification, are permitted provided that the following conditions
9 +are met:
10 +1. Redistributions of source code must retain the above copyright
11 + notice, this list of conditions and the following disclaimer.
12 +2. Redistributions in binary form must reproduce the above copyright
13 + notice, this list of conditions and the following disclaimer in the
14 + documentation and/or other materials provided with the distribution.
15 +3. All advertising materials mentioning features or use of this software
16 + must display the following acknowledgement:
17 +
18 + This product includes software developed by Niels Provos.
19 +
20 +4. The name of the author may not be used to endorse or promote products
21 + derived from this software without specific prior written permission.
22 +
23 +THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 +IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 +OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 +IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 +THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
READMEView
@@ -1,0 +1,158 @@
1 += bcrypt-ruby
2 +
3 +An easy way to keep your users' passwords secure.
4 +
5 +== Why you should use bcrypt
6 +
7 +If you store user passwords in the clear, then an attacker who steals a copy of your database has a giant list of emails
8 +and passwords. Some of your users will only have one password -- for their email account, for their banking account, for
9 +your application. A simple hack could escalate into massive identity theft.
10 +
11 +It's your responsibility as a web developer to make your web application secure -- blaming your users for not being
12 +security experts is not a professional response to risk.
13 +
14 +bcrypt allows you to easily harden your application against these kinds of attacks.
15 +
16 +== How to install bcrypt
17 +
18 + sudo gem install bcrypt-ruby
19 +
20 +You'll need a working compiler. (Win32 folks should use Cygwin or um, something else.)
21 +
22 +== How to use bcrypt in your Rails application
23 +
24 +=== The +User+ model
25 +
26 + require 'bcrypt'
27 +
28 + class User < ActiveRecord::Base
29 + # users.hash in the database is a :string
30 + include BCrypt
31 +
32 + def password
33 + @password ||= Password.new(hash)
34 + end
35 +
36 + def password=(new_password)
37 + @password = Password.create(new_password)
38 + self.hash = @password
39 + end
40 +
41 + end
42 +
43 +=== Creating an account
44 +
45 + def create
46 + @user = User.new(params[:user])
47 + @user.password = params[:password]
48 + @user.save!
49 + end
50 +
51 +=== Authenticating a user
52 +
53 + def login
54 + @user = User.find_by_email(params[:email])
55 + if @user.password == params[:password]
56 + give_token
57 + else
58 + redirect_to home_url
59 + end
60 + end
61 +
62 +=== If a user forgets their password?
63 +
64 + # assign them a random one and mail it to them, asking them to change it
65 + def forgot_password
66 + @user = User.find_by_email(params[:email])
67 + random_password = Array.new(10).map { (65 + rand(58)).chr }.join
68 + @user.password = random_password
69 + @user.save!
70 + Mailer.create_and_deliver_password_change(@user, random_password)
71 + end
72 +
73 +== How to use bcrypt-ruby in general
74 +
75 + require 'bcrypt'
76 +
77 + my_password = BCrypt::Password.create("my password") #=> "$2a$10$vI8aWBnW3fID.ZQ4/zo1G.q1lRps.9cGLcZEiGDMVr5yUP1KUOYTa"
78 +
79 + my_password.version #=> "2a"
80 + my_password.cost #=> 10
81 + my_password == "my password" #=> true
82 + my_password == "not my password" #=> false
83 +
84 + my_password = BCrypt::Password.new("$2a$10$vI8aWBnW3fID.ZQ4/zo1G.q1lRps.9cGLcZEiGDMVr5yUP1KUOYTa")
85 + my_password == "my password" #=> true
86 + my_password == "not my password" #=> false
87 +
88 +Check the rdocs for more details -- BCrypt, BCrypt::Password.
89 +
90 +== How bcrypt() works
91 +
92 +bcrypt() is a hashing algorithm designed by Niels Provos and David Mazières of the OpenBSD Project.
93 +
94 +Hash algorithms take a chunk of data (e.g., your user's password) and create a "digital fingerprint," or hash, of it.
95 +Because this process is not reversible, there's no way to go from the hash back to the password.
96 +
97 +In other words:
98 +
99 + hash(p) #=> <unique gibberish>
100 +
101 +You can store the hash and check it against a hash made of a potentially valid password:
102 +
103 + <unique gibberish> =? hash(just_entered_password)
104 +
105 +But even this has weaknesses -- attackers can just run lists of possible passwords through the same algorithm, store the
106 +results in a big database, and then look up the passwords by their hash:
107 +
108 + PrecomputedPassword.find_by_hash(<unique gibberish>).password #=> "secret1"
109 +
110 +The solution to this is to add a small chunk of random data -- called a salt -- to the password before it's hashed:
111 +
112 + hash(salt + p) #=> <really unique gibberish>
113 +
114 +The salt is then stored along with the hash in the database, and used to check potentially valid passwords:
115 +
116 + <really unique gibberish> =? hash(salt + just_entered_password)
117 +
118 +bcrypt-ruby automatically handles the storage and generation of these salts for you.
119 +
120 +Adding a salt means that an attacker has to have a gigantic database for each unique salt -- for a salt made of 4
121 +letters, that's 456,976 different databases. Pretty much no one has that much storage space, so attackers try a
122 +different, slower method -- throw a list of potential passwords at each individual password:
123 +
124 + hash(salt + "aadvark") =? <really unique gibberish>
125 + hash(salt + "abacus") =? <really unique gibberish>
126 + etc.
127 +
128 +This is much slower than the big database approach, but most hash algorithms are pretty quick -- and therein lies the
129 +problem. Hash algorithms aren't usually designed to be slow, they're designed to turn gigabytes of data into secure
130 +fingerprints as quickly as possible. bcrypt(), though, is designed to be computationally expensive:
131 +
132 + Ten thousand iterations:
133 + user system total real
134 + md5 0.070000 0.000000 0.070000 ( 0.070415)
135 + bcrypt 22.230000 0.080000 22.310000 ( 22.493822)
136 +
137 +If an attacker was using Ruby to check each password, they could check ~140,000 passwords a second with MD5 but only
138 +~450 passwords a second with bcrypt().
139 +
140 +In addition, bcrypt() allows you to increase the amount of work required to hash a password as computers get faster. Old
141 +passwords will still work fine, but new passwords can keep up with the times.
142 +
143 +bcrypt() is currently used as the default password storage hash in OpenBSD, widely regarded as the most secure operating
144 +system available.
145 +
146 +
147 +For a more technical explanation of the algorithm and its design criteria, please read Niels Provos and David Mazières'
148 +Usenix99 paper:
149 +http://www.usenix.org/events/usenix99/provos.html
150 +
151 +If you'd like more down-to-earth advice regarding cryptography, I suggest reading <i>Practical Cryptography</i> by Niels
152 +Ferguson and Bruce Schneier:
153 +http://www.schneier.com/book-practical.html
154 +
155 += Etc
156 +
157 +Author :: Coda Hale <coda.hale@gmail.com>
158 +Website :: http://blog.codahale.com
RakefileView
@@ -1,0 +1,78 @@
1 +gem "rspec"
2 +require "spec/rake/spectask"
3 +require 'rake/gempackagetask'
4 +require 'rake/contrib/rubyforgepublisher'
5 +require 'rake/clean'
6 +require 'rake/rdoctask'
7 +
8 +PKG_NAME = "bcrypt-ruby"
9 +PKG_VERSION = "1.0.0"
10 +PKG_FILE_NAME = "#{PKG_NAME}-#{PKG_VERSION}"
11 +PKG_FILES = FileList[
12 + '[A-Z]*',
13 + 'lib/**/*.rb',
14 + 'spec/**/*.rb',
15 + 'ext/*.c',
16 + 'ext/*.h',
17 + 'ext/*.rb'
18 +]
19 +
20 +task :default => [:spec]
21 +
22 +desc "Run all specs"
23 +Spec::Rake::SpecTask.new do |t|
24 + t.spec_files = FileList['spec/**/*_spec.rb']
25 + t.spec_opts = ['--color','--backtrace','--diff']
26 + t.rcov = true
27 + t.rcov_dir = 'doc/output/coverage'
28 + t.rcov_opts = ['--exclude', 'spec\/spec,spec\/.*_spec.rb']
29 +end
30 +
31 +desc "Run all specs and store html output in doc/output/report.html"
32 +Spec::Rake::SpecTask.new('spec_html') do |t|
33 + t.spec_files = FileList['spec/**/*_spec.rb']
34 + t.spec_opts = ['--diff','--format html','--backtrace','--out doc/output/report.html']
35 +end
36 +
37 +desc 'Generate RDoc'
38 +rd = Rake::RDocTask.new do |rdoc|
39 + rdoc.rdoc_dir = 'doc/output/rdoc'
40 + rdoc.options << '--title' << 'bcrypt-ruby' << '--line-numbers' << '--inline-source' << '--main' << 'README'
41 + rdoc.template = ENV['TEMPLATE'] if ENV['TEMPLATE']
42 + rdoc.rdoc_files.include('README', 'COPYING', 'lib/**/*.rb')
43 +end
44 +
45 +spec = Gem::Specification.new do |s|
46 + s.name = PKG_NAME
47 + s.version = PKG_VERSION
48 + s.summary = "Blah."
49 + s.description = <<-EOF
50 + Woot.
51 + EOF
52 +
53 + s.files = PKG_FILES.to_a
54 + s.require_path = 'lib'
55 +
56 + s.has_rdoc = true
57 + s.rdoc_options = rd.options
58 + s.extra_rdoc_files = rd.rdoc_files.to_a
59 +
60 + s.extensions = FileList["ext/extconf.rb"].to_a
61 +
62 + s.autorequire = 'bcrypt'
63 + s.author = ["Coda Hale"]
64 + s.email = "coda.hale@gmail.com"
65 + s.homepage = "http://bcrypt-ruby.rubyforge.org"
66 + s.rubyforge_project = "bcrypt-ruby"
67 +end
68 +
69 +Rake::GemPackageTask.new(spec) do |pkg|
70 + pkg.need_zip = true
71 + pkg.need_tar = true
72 +end
73 +
74 +task :compile do
75 + Dir.chdir('./ext')
76 + system "ruby extconf.rb"
77 + system "make"
78 +end
ext/bcrypt.cView
@@ -1,0 +1,337 @@
1 +/* $OpenBSD: bcrypt.c,v 1.22 2007/02/20 01:44:16 ray Exp $ */
2 +
3 +/*
4 + * Modified by <coda.hale@gmail.com> on 2007-02-27:
5 + *
6 + * - Changed bcrypt_gensalt to accept a random seed as a parameter,
7 + * to remove the code's dependency on arc4random(), which isn't
8 + * available on Linux.
9 + */
10 +
11 +/*
12 + * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
13 + * All rights reserved.
14 + *
15 + * Redistribution and use in source and binary forms, with or without
16 + * modification, are permitted provided that the following conditions
17 + * are met:
18 + * 1. Redistributions of source code must retain the above copyright
19 + * notice, this list of conditions and the following disclaimer.
20 + * 2. Redistributions in binary form must reproduce the above copyright
21 + * notice, this list of conditions and the following disclaimer in the
22 + * documentation and/or other materials provided with the distribution.
23 + * 3. All advertising materials mentioning features or use of this software
24 + * must display the following acknowledgement:
25 + * This product includes software developed by Niels Provos.
26 + * 4. The name of the author may not be used to endorse or promote products
27 + * derived from this software without specific prior written permission.
28 + *
29 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
30 + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31 + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32 + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
33 + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
34 + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
38 + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 + */
40 +
41 +/* This password hashing algorithm was designed by David Mazieres
42 + * <dm@lcs.mit.edu> and works as follows:
43 + *
44 + * 1. state := InitState ()
45 + * 2. state := ExpandKey (state, salt, password) 3.
46 + * REPEAT rounds:
47 + * state := ExpandKey (state, 0, salt)
48 + * state := ExpandKey(state, 0, password)
49 + * 4. ctext := "OrpheanBeholderScryDoubt"
50 + * 5. REPEAT 64:
51 + * ctext := Encrypt_ECB (state, ctext);
52 + * 6. RETURN Concatenate (salt, ctext);
53 + *
54 + */
55 +
56 +#if 0
57 +#include <stdio.h>
58 +#endif
59 +
60 +#include <stdio.h>
61 +#include <stdlib.h>
62 +#include <sys/types.h>
63 +#include <string.h>
64 +#include "blf.h"
65 +
66 +/* This implementation is adaptable to current computing power.
67 + * You can have up to 2^31 rounds which should be enough for some
68 + * time to come.
69 + */
70 +
71 +#define BCRYPT_VERSION '2'
72 +#define BCRYPT_MAXSALT 16 /* Precomputation is just so nice */
73 +#define BCRYPT_BLOCKS 6 /* Ciphertext blocks */
74 +#define BCRYPT_MINROUNDS 16 /* we have log2(rounds) in salt */
75 +
76 +char *bcrypt_gensalt(u_int8_t, u_int8_t *);
77 +
78 +static void encode_salt(char *, u_int8_t *, u_int16_t, u_int8_t);
79 +static void encode_base64(u_int8_t *, u_int8_t *, u_int16_t);
80 +static void decode_base64(u_int8_t *, u_int16_t, u_int8_t *);
81 +
82 +static char encrypted[_PASSWORD_LEN];
83 +static char gsalt[7 + (BCRYPT_MAXSALT * 4 + 2) / 3 + 1];
84 +static char error[] = ":";
85 +
86 +const static u_int8_t Base64Code[] =
87 +"./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
88 +
89 +const static u_int8_t index_64[128] = {
90 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
91 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
92 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
93 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
94 + 255, 255, 255, 255, 255, 255, 0, 1, 54, 55,
95 + 56, 57, 58, 59, 60, 61, 62, 63, 255, 255,
96 + 255, 255, 255, 255, 255, 2, 3, 4, 5, 6,
97 + 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
98 + 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
99 + 255, 255, 255, 255, 255, 255, 28, 29, 30,
100 + 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
101 + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
102 + 51, 52, 53, 255, 255, 255, 255, 255
103 +};
104 +#define CHAR64(c) ( (c) > 127 ? 255 : index_64[(c)])
105 +
106 +static void
107 +decode_base64(u_int8_t *buffer, u_int16_t len, u_int8_t *data)
108 +{
109 + u_int8_t *bp = buffer;
110 + u_int8_t *p = data;
111 + u_int8_t c1, c2, c3, c4;
112 + while (bp < buffer + len) {
113 + c1 = CHAR64(*p);
114 + c2 = CHAR64(*(p + 1));
115 +
116 + /* Invalid data */
117 + if (c1 == 255 || c2 == 255)
118 + break;
119 +
120 + *bp++ = (c1 << 2) | ((c2 & 0x30) >> 4);
121 + if (bp >= buffer + len)
122 + break;
123 +
124 + c3 = CHAR64(*(p + 2));
125 + if (c3 == 255)
126 + break;
127 +
128 + *bp++ = ((c2 & 0x0f) << 4) | ((c3 & 0x3c) >> 2);
129 + if (bp >= buffer + len)
130 + break;
131 +
132 + c4 = CHAR64(*(p + 3));
133 + if (c4 == 255)
134 + break;
135 + *bp++ = ((c3 & 0x03) << 6) | c4;
136 +
137 + p += 4;
138 + }
139 +}
140 +
141 +static void
142 +encode_salt(char *salt, u_int8_t *csalt, u_int16_t clen, u_int8_t logr)
143 +{
144 + salt[0] = '$';
145 + salt[1] = BCRYPT_VERSION;
146 + salt[2] = 'a';
147 + salt[3] = '$';
148 +
149 + snprintf(salt + 4, 4, "%2.2u$", logr);
150 +
151 + encode_base64((u_int8_t *) salt + 7, csalt, clen);
152 +}
153 +/* Generates a salt for this version of crypt.
154 + Since versions may change. Keeping this here
155 + seems sensible.
156 + */
157 +
158 +char *
159 +bcrypt_gensalt(u_int8_t log_rounds, u_int8_t *rseed)
160 +{
161 + u_int16_t i;
162 + u_int32_t seed = 0;
163 +
164 + if (log_rounds < 4)
165 + log_rounds = 4;
166 + else if (log_rounds > 31)
167 + log_rounds = 31;
168 +
169 + encode_salt(gsalt, rseed, BCRYPT_MAXSALT, log_rounds);
170 + return gsalt;
171 +}
172 +/* We handle $Vers$log2(NumRounds)$salt+passwd$
173 + i.e. $2$04$iwouldntknowwhattosayetKdJ6iFtacBqJdKe6aW7ou */
174 +
175 +char *
176 +bcrypt(const char *key, const char *salt)
177 +{
178 + blf_ctx state;
179 + u_int32_t rounds, i, k;
180 + u_int16_t j;
181 + u_int8_t key_len, salt_len, logr, minor;
182 + u_int8_t ciphertext[4 * BCRYPT_BLOCKS] = "OrpheanBeholderScryDoubt";
183 + u_int8_t csalt[BCRYPT_MAXSALT];
184 + u_int32_t cdata[BCRYPT_BLOCKS];
185 + int n;
186 +
187 + /* Discard "$" identifier */
188 + salt++;
189 +
190 + if (*salt > BCRYPT_VERSION) {
191 + /* How do I handle errors ? Return ':' */
192 + return error;
193 + }
194 +
195 + /* Check for minor versions */
196 + if (salt[1] != '$') {
197 + switch (salt[1]) {
198 + case 'a':
199 + /* 'ab' should not yield the same as 'abab' */
200 + minor = salt[1];
201 + salt++;
202 + break;
203 + default:
204 + return error;
205 + }
206 + } else
207 + minor = 0;
208 +
209 + /* Discard version + "$" identifier */
210 + salt += 2;
211 +
212 + if (salt[2] != '$')
213 + /* Out of sync with passwd entry */
214 + return error;
215 +
216 + /* Computer power doesn't increase linear, 2^x should be fine */
217 + n = atoi(salt);
218 + if (n > 31 || n < 0)
219 + return error;
220 + logr = (u_int8_t)n;
221 + if ((rounds = (u_int32_t) 1 << logr) < BCRYPT_MINROUNDS)
222 + return error;
223 +
224 + /* Discard num rounds + "$" identifier */
225 + salt += 3;
226 +
227 + if (strlen(salt) * 3 / 4 < BCRYPT_MAXSALT)
228 + return error;
229 +
230 + /* We dont want the base64 salt but the raw data */
231 + decode_base64(csalt, BCRYPT_MAXSALT, (u_int8_t *) salt);
232 + salt_len = BCRYPT_MAXSALT;
233 + key_len = strlen(key) + (minor >= 'a' ? 1 : 0);
234 +
235 + /* Setting up S-Boxes and Subkeys */
236 + Blowfish_initstate(&state);
237 + Blowfish_expandstate(&state, csalt, salt_len,
238 + (u_int8_t *) key, key_len);
239 + for (k = 0; k < rounds; k++) {
240 + Blowfish_expand0state(&state, (u_int8_t *) key, key_len);
241 + Blowfish_expand0state(&state, csalt, salt_len);
242 + }
243 +
244 + /* This can be precomputed later */
245 + j = 0;
246 + for (i = 0; i < BCRYPT_BLOCKS; i++)
247 + cdata[i] = Blowfish_stream2word(ciphertext, 4 * BCRYPT_BLOCKS, &j);
248 +
249 + /* Now do the encryption */
250 + for (k = 0; k < 64; k++)
251 + blf_enc(&state, cdata, BCRYPT_BLOCKS / 2);
252 +
253 + for (i = 0; i < BCRYPT_BLOCKS; i++) {
254 + ciphertext[4 * i + 3] = cdata[i] & 0xff;
255 + cdata[i] = cdata[i] >> 8;
256 + ciphertext[4 * i + 2] = cdata[i] & 0xff;
257 + cdata[i] = cdata[i] >> 8;
258 + ciphertext[4 * i + 1] = cdata[i] & 0xff;
259 + cdata[i] = cdata[i] >> 8;
260 + ciphertext[4 * i + 0] = cdata[i] & 0xff;
261 + }
262 +
263 +
264 + i = 0;
265 + encrypted[i++] = '$';
266 + encrypted[i++] = BCRYPT_VERSION;
267 + if (minor)
268 + encrypted[i++] = minor;
269 + encrypted[i++] = '$';
270 +
271 + snprintf(encrypted + i, 4, "%2.2u$", logr);
272 +
273 + encode_base64((u_int8_t *) encrypted + i + 3, csalt, BCRYPT_MAXSALT);
274 + encode_base64((u_int8_t *) encrypted + strlen(encrypted), ciphertext,
275 + 4 * BCRYPT_BLOCKS - 1);
276 + return encrypted;
277 +}
278 +
279 +static void
280 +encode_base64(u_int8_t *buffer, u_int8_t *data, u_int16_t len)
281 +{
282 + u_int8_t *bp = buffer;
283 + u_int8_t *p = data;
284 + u_int8_t c1, c2;
285 + while (p < data + len) {
286 + c1 = *p++;
287 + *bp++ = Base64Code[(c1 >> 2)];
288 + c1 = (c1 & 0x03) << 4;
289 + if (p >= data + len) {
290 + *bp++ = Base64Code[c1];
291 + break;
292 + }
293 + c2 = *p++;
294 + c1 |= (c2 >> 4) & 0x0f;
295 + *bp++ = Base64Code[c1];
296 + c1 = (c2 & 0x0f) << 2;
297 + if (p >= data + len) {
298 + *bp++ = Base64Code[c1];
299 + break;
300 + }
301 + c2 = *p++;
302 + c1 |= (c2 >> 6) & 0x03;
303 + *bp++ = Base64Code[c1];
304 + *bp++ = Base64Code[c2 & 0x3f];
305 + }
306 + *bp = '\0';
307 +}
308 +#if 0
309 +void
310 +main()
311 +{
312 + char blubber[73];
313 + char salt[100];
314 + char *p;
315 + salt[0] = '$';
316 + salt[1] = BCRYPT_VERSION;
317 + salt[2] = '$';
318 +
319 + snprintf(salt + 3, 4, "%2.2u$", 5);
320 +
321 + printf("24 bytes of salt: ");
322 + fgets(salt + 6, sizeof(salt) - 6, stdin);
323 + salt[99] = 0;
324 + printf("72 bytes of password: ");
325 + fpurge(stdin);
326 + fgets(blubber, sizeof(blubber), stdin);
327 + blubber[72] = 0;
328 +
329 + p = crypt(blubber, salt);
330 + printf("Passwd entry: %s\n\n", p);
331 +
332 + p = bcrypt_gensalt(5);
333 + printf("Generated salt: %s\n", p);
334 + p = crypt(blubber, p);
335 + printf("Passwd entry: %s\n", p);
336 +}
337 +#endif
ext/bcrypt_ext.cView
@@ -1,0 +1,25 @@
1 +#include "ruby.h"
2 +
3 +VALUE mBCrypt;
4 +VALUE mBCryptInternals;
5 +
6 +/* Given a logarithmic cost parameter, generates a salt for use with +bc_crypt+.
7 + */
8 +static VALUE bc_salt(VALUE self, VALUE cost, VALUE seed) {
9 + return rb_str_new2((char *)bcrypt_gensalt(NUM2INT(cost), RSTRING(seed)->ptr));
10 +}
11 +
12 +/* Given a secret and a salt, generates a salted hash (which you can then store safely).
13 + */
14 +static VALUE bc_crypt(VALUE self, VALUE key, VALUE salt) {
15 + return rb_str_new2((char *)bcrypt(RSTRING(key)->ptr, RSTRING(salt)->ptr));
16 +}
17 +
18 +/* Create the BCrypt and BCrypt::Internals modules, and populate them with methods. */
19 +void Init_bcrypt_ext(){
20 + mBCrypt = rb_define_module("BCrypt");
21 + mBCryptInternals = rb_define_module_under(mBCrypt, "Internals");
22 +
23 + rb_define_method(mBCryptInternals, "__bc_salt", bc_salt, 2);
24 + rb_define_method(mBCryptInternals, "__bc_crypt", bc_crypt, 2);
25 +}
ext/blf.hView
@@ -1,0 +1,84 @@
1 +/* $OpenBSD: blf.h,v 1.6 2002/02/16 21:27:17 millert Exp $ */
2 +/*
3 + * Blowfish - a fast block cipher designed by Bruce Schneier
4 + *
5 + * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
6 + * All rights reserved.
7 + *
8 + * Redistribution and use in source and binary forms, with or without
9 + * modification, are permitted provided that the following conditions
10 + * are met:
11 + * 1. Redistributions of source code must retain the above copyright
12 + * notice, this list of conditions and the following disclaimer.
13 + * 2. Redistributions in binary form must reproduce the above copyright
14 + * notice, this list of conditions and the following disclaimer in the
15 + * documentation and/or other materials provided with the distribution.
16 + * 3. All advertising materials mentioning features or use of this software
17 + * must display the following acknowledgement:
18 + * This product includes software developed by Niels Provos.
19 + * 4. The name of the author may not be used to endorse or promote products
20 + * derived from this software without specific prior written permission.
21 + *
22 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 + */
33 +
34 +#ifndef _BLF_H_
35 +#define _BLF_H_
36 +
37 +// Imported from pwd.h. <coda.hale@gmail.com>
38 +#define _PASSWORD_LEN 128 /* max length, not counting NUL */
39 +
40 +/* Schneier specifies a maximum key length of 56 bytes.
41 + * This ensures that every key bit affects every cipher
42 + * bit. However, the subkeys can hold up to 72 bytes.
43 + * Warning: For normal blowfish encryption only 56 bytes
44 + * of the key affect all cipherbits.
45 + */
46 +
47 +#define BLF_N 16 /* Number of Subkeys */
48 +#define BLF_MAXKEYLEN ((BLF_N-2)*4) /* 448 bits */
49 +
50 +/* Blowfish context */
51 +typedef struct BlowfishContext {
52 + u_int32_t S[4][256]; /* S-Boxes */
53 + u_int32_t P[BLF_N + 2]; /* Subkeys */
54 +} blf_ctx;
55 +
56 +/* Raw access to customized Blowfish
57 + * blf_key is just:
58 + * Blowfish_initstate( state )
59 + * Blowfish_expand0state( state, key, keylen )
60 + */
61 +
62 +void Blowfish_encipher(blf_ctx *, u_int32_t *, u_int32_t *);
63 +void Blowfish_decipher(blf_ctx *, u_int32_t *, u_int32_t *);
64 +void Blowfish_initstate(blf_ctx *);
65 +void Blowfish_expand0state(blf_ctx *, const u_int8_t *, u_int16_t);
66 +void Blowfish_expandstate
67 +(blf_ctx *, const u_int8_t *, u_int16_t, const u_int8_t *, u_int16_t);
68 +
69 +/* Standard Blowfish */
70 +
71 +void blf_key(blf_ctx *, const u_int8_t *, u_int16_t);
72 +void blf_enc(blf_ctx *, u_int32_t *, u_int16_t);
73 +void blf_dec(blf_ctx *, u_int32_t *, u_int16_t);
74 +
75 +void blf_ecb_encrypt(blf_ctx *, u_int8_t *, u_int32_t);
76 +void blf_ecb_decrypt(blf_ctx *, u_int8_t *, u_int32_t);
77 +
78 +void blf_cbc_encrypt(blf_ctx *, u_int8_t *, u_int8_t *, u_int32_t);
79 +void blf_cbc_decrypt(blf_ctx *, u_int8_t *, u_int8_t *, u_int32_t);
80 +
81 +/* Converts u_int8_t to u_int32_t */
82 +u_int32_t Blowfish_stream2word(const u_int8_t *, u_int16_t , u_int16_t *);
83 +
84 +#endif
ext/blowfish.cView
@@ -1,0 +1,685 @@
1 +/* $OpenBSD: blowfish.c,v 1.18 2004/11/02 17:23:26 hshoexer Exp $ */
2 +/*
3 + * Blowfish block cipher for OpenBSD
4 + * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
5 + * All rights reserved.
6 + *
7 + * Implementation advice by David Mazieres <dm@lcs.mit.edu>.
8 + *
9 + * Redistribution and use in source and binary forms, with or without
10 + * modification, are permitted provided that the following conditions
11 + * are met:
12 + * 1. Redistributions of source code must retain the above copyright
13 + * notice, this list of conditions and the following disclaimer.
14 + * 2. Redistributions in binary form must reproduce the above copyright
15 + * notice, this list of conditions and the following disclaimer in the
16 + * documentation and/or other materials provided with the distribution.
17 + * 3. All advertising materials mentioning features or use of this software
18 + * must display the following acknowledgement:
19 + * This product includes software developed by Niels Provos.
20 + * 4. The name of the author may not be used to endorse or promote products
21 + * derived from this software without specific prior written permission.
22 + *
23 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 + */
34 +
35 +/*
36 + * This code is derived from section 14.3 and the given source
37 + * in section V of Applied Cryptography, second edition.
38 + * Blowfish is an unpatented fast block cipher designed by
39 + * Bruce Schneier.
40 + */
41 +
42 +#if 0
43 +#include <stdio.h> /* used for debugging */
44 +#include <string.h>
45 +#endif
46 +
47 +#include <sys/types.h>
48 +#include "blf.h"
49 +
50 +#undef inline
51 +#ifdef __GNUC__
52 +#define inline __inline
53 +#else /* !__GNUC__ */
54 +#define inline
55 +#endif /* !__GNUC__ */
56 +
57 +/* Function for Feistel Networks */
58 +
59 +#define F(s, x) ((((s)[ (((x)>>24)&0xFF)] \
60 + + (s)[0x100 + (((x)>>16)&0xFF)]) \
61 + ^ (s)[0x200 + (((x)>> 8)&0xFF)]) \
62 + + (s)[0x300 + ( (x) &0xFF)])
63 +
64 +#define BLFRND(s,p,i,j,n) (i ^= F(s,j) ^ (p)[n])
65 +
66 +void
67 +Blowfish_encipher(blf_ctx *c, u_int32_t *xl, u_int32_t *xr)
68 +{
69 + u_int32_t Xl;
70 + u_int32_t Xr;
71 + u_int32_t *s = c->S[0];
72 + u_int32_t *p = c->P;
73 +
74 + Xl = *xl;
75 + Xr = *xr;
76 +
77 + Xl ^= p[0];
78 + BLFRND(s, p, Xr, Xl, 1); BLFRND(s, p, Xl, Xr, 2);
79 + BLFRND(s, p, Xr, Xl, 3); BLFRND(s, p, Xl, Xr, 4);
80 + BLFRND(s, p, Xr, Xl, 5); BLFRND(s, p, Xl, Xr, 6);
81 + BLFRND(s, p, Xr, Xl, 7); BLFRND(s, p, Xl, Xr, 8);
82 + BLFRND(s, p, Xr, Xl, 9); BLFRND(s, p, Xl, Xr, 10);
83 + BLFRND(s, p, Xr, Xl, 11); BLFRND(s, p, Xl, Xr, 12);
84 + BLFRND(s, p, Xr, Xl, 13); BLFRND(s, p, Xl, Xr, 14);
85 + BLFRND(s, p, Xr, Xl, 15); BLFRND(s, p, Xl, Xr, 16);
86 +
87 + *xl = Xr ^ p[17];
88 + *xr = Xl;
89 +}
90 +
91 +void
92 +Blowfish_decipher(blf_ctx *c, u_int32_t *xl, u_int32_t *xr)
93 +{
94 + u_int32_t Xl;
95 + u_int32_t Xr;
96 + u_int32_t *s = c->S[0];
97 + u_int32_t *p = c->P;
98 +
99 + Xl = *xl;
100 + Xr = *xr;
101 +
102 + Xl ^= p[17];
103 + BLFRND(s, p, Xr, Xl, 16); BLFRND(s, p, Xl, Xr, 15);
104 + BLFRND(s, p, Xr, Xl, 14); BLFRND(s, p, Xl, Xr, 13);
105 + BLFRND(s, p, Xr, Xl, 12); BLFRND(s, p, Xl, Xr, 11);
106 + BLFRND(s, p, Xr, Xl, 10); BLFRND(s, p, Xl, Xr, 9);
107 + BLFRND(s, p, Xr, Xl, 8); BLFRND(s, p, Xl, Xr, 7);
108 + BLFRND(s, p, Xr, Xl, 6); BLFRND(s, p, Xl, Xr, 5);
109 + BLFRND(s, p, Xr, Xl, 4); BLFRND(s, p, Xl, Xr, 3);
110 + BLFRND(s, p, Xr, Xl, 2); BLFRND(s, p, Xl, Xr, 1);
111 +
112 + *xl = Xr ^ p[0];
113 + *xr = Xl;
114 +}
115 +
116 +void
117 +Blowfish_initstate(blf_ctx *c)
118 +{
119 + /* P-box and S-box tables initialized with digits of Pi */
120 +
121 + static const blf_ctx initstate =
122 + { {
123 + {
124 + 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
125 + 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
126 + 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
127 + 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
128 + 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
129 + 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
130 + 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
131 + 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
132 + 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
133 + 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
134 + 0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
135 + 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
136 + 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
137 + 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
138 + 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
139 + 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
140 + 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
141 + 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
142 + 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
143 + 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
144 + 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
145 + 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
146 + 0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
147 + 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
148 + 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
149 + 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
150 + 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
151 + 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
152 + 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
153 + 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
154 + 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
155 + 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
156 + 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
157 + 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
158 + 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
159 + 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
160 + 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
161 + 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
162 + 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
163 + 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
164 + 0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
165 + 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
166 + 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
167 + 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
168 + 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
169 + 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
170 + 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
171 + 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
172 + 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
173 + 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
174 + 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
175 + 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
176 + 0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
177 + 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
178 + 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
179 + 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
180 + 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
181 + 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
182 + 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
183 + 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
184 + 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
185 + 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
186 + 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
187 + 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a},
188 + {
189 + 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
190 + 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
191 + 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
192 + 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
193 + 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
194 + 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
195 + 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
196 + 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
197 + 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
198 + 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
199 + 0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
200 + 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
201 + 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
202 + 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
203 + 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
204 + 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
205 + 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
206 + 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
207 + 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
208 + 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
209 + 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
210 + 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
211 + 0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
212 + 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
213 + 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
214 + 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
215 + 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
216 + 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
217 + 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
218 + 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
219 + 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
220 + 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
221 + 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
222 + 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
223 + 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
224 + 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
225 + 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
226 + 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
227 + 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
228 + 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
229 + 0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
230 + 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
231 + 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
232 + 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
233 + 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
234 + 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
235 + 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
236 + 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
237 + 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
238 + 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
239 + 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
240 + 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
241 + 0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
242 + 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
243 + 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
244 + 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
245 + 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
246 + 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
247 + 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
248 + 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
249 + 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
250 + 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
251 + 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
252 + 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7},
253 + {
254 + 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
255 + 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
256 + 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
257 + 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
258 + 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
259 + 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
260 + 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
261 + 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
262 + 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
263 + 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
264 + 0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
265 + 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
266 + 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
267 + 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
268 + 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
269 + 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
270 + 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
271 + 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
272 + 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
273 + 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
274 + 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
275 + 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
276 + 0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
277 + 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
278 + 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
279 + 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
280 + 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
281 + 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
282 + 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
283 + 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
284 + 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
285 + 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
286 + 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
287 + 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
288 + 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
289 + 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
290 + 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
291 + 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
292 + 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
293 + 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
294 + 0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
295 + 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
296 + 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
297 + 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
298 + 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
299 + 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
300 + 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
301 + 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
302 + 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
303 + 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
304 + 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
305 + 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
306 + 0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
307 + 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
308 + 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
309 + 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
310 + 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
311 + 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
312 + 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
313 + 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
314 + 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
315 + 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
316 + 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
317 + 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0},
318 + {
319 + 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
320 + 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
321 + 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
322 + 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
323 + 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
324 + 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
325 + 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
326 + 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
327 + 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
328 + 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
329 + 0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
330 + 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
331 + 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
332 + 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
333 + 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
334 + 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
335 + 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
336 + 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
337 + 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
338 + 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
339 + 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
340 + 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
341 + 0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
342 + 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
343 + 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
344 + 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
345 + 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
346 + 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
347 + 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
348 + 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
349 + 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
350 + 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
351 + 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
352 + 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
353 + 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
354 + 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
355 + 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
356 + 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
357 + 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
358 + 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
359 + 0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
360 + 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
361 + 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
362 + 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
363 + 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
364 + 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
365 + 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
366 + 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
367 + 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
368 + 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
369 + 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
370 + 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
371 + 0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
372 + 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
373 + 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
374 + 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
375 + 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
376 + 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
377 + 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
378 + 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
379 + 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
380 + 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
381 + 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
382 + 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6}
383 + },
384 + {
385 + 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
386 + 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
387 + 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
388 + 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
389 + 0x9216d5d9, 0x8979fb1b
390 + } };
391 +
392 + *c = initstate;
393 +}
394 +
395 +u_int32_t
396 +Blowfish_stream2word(const u_int8_t *data, u_int16_t databytes,
397 + u_int16_t *current)
398 +{
399 + u_int8_t i;
400 + u_int16_t j;
401 + u_int32_t temp;
402 +
403 + temp = 0x00000000;
404 + j = *current;
405 +
406 + for (i = 0; i < 4; i++, j++) {
407 + if (j >= databytes)
408 + j = 0;
409 + temp = (temp << 8) | data[j];
410 + }
411 +
412 + *current = j;
413 + return temp;
414 +}
415 +
416 +void
417 +Blowfish_expand0state(blf_ctx *c, const u_int8_t *key, u_int16_t keybytes)
418 +{
419 + u_int16_t i;
420 + u_int16_t j;
421 + u_int16_t k;
422 + u_int32_t temp;
423 + u_int32_t datal;
424 + u_int32_t datar;
425 +
426 + j = 0;
427 + for (i = 0; i < BLF_N + 2; i++) {
428 + /* Extract 4 int8 to 1 int32 from keystream */
429 + temp = Blowfish_stream2word(key, keybytes, &j);
430 + c->P[i] = c->P[i] ^ temp;
431 + }
432 +
433 + j = 0;
434 + datal = 0x00000000;
435 + datar = 0x00000000;
436 + for (i = 0; i < BLF_N + 2; i += 2) {
437 + Blowfish_encipher(c, &datal, &datar);
438 +
439 + c->P[i] = datal;
440 + c->P[i + 1] = datar;
441 + }
442 +
443 + for (i = 0; i < 4; i++) {
444 + for (k = 0; k < 256; k += 2) {
445 + Blowfish_encipher(c, &datal, &datar);
446 +
447 + c->S[i][k] = datal;
448 + c->S[i][k + 1] = datar;
449 + }
450 + }
451 +}
452 +
453 +
454 +void
455 +Blowfish_expandstate(blf_ctx *c, const u_int8_t *data, u_int16_t databytes,
456 + const u_int8_t *key, u_int16_t keybytes)
457 +{
458 + u_int16_t i;
459 + u_int16_t j;
460 + u_int16_t k;
461 + u_int32_t temp;
462 + u_int32_t datal;
463 + u_int32_t datar;
464 +
465 + j = 0;
466 + for (i = 0; i < BLF_N + 2; i++) {
467 + /* Extract 4 int8 to 1 int32 from keystream */
468 + temp = Blowfish_stream2word(key, keybytes, &j);
469 + c->P[i] = c->P[i] ^ temp;
470 + }
471 +
472 + j = 0;
473 + datal = 0x00000000;
474 + datar = 0x00000000;
475 + for (i = 0; i < BLF_N + 2; i += 2) {
476 + datal ^= Blowfish_stream2word(data, databytes, &j);
477 + datar ^= Blowfish_stream2word(data, databytes, &j);
478 + Blowfish_encipher(c, &datal, &datar);
479 +
480 + c->P[i] = datal;
481 + c->P[i + 1] = datar;
482 + }
483 +
484 + for (i = 0; i < 4; i++) {
485 + for (k = 0; k < 256; k += 2) {
486 + datal ^= Blowfish_stream2word(data, databytes, &j);
487 + datar ^= Blowfish_stream2word(data, databytes, &j);
488 + Blowfish_encipher(c, &datal, &datar);
489 +
490 + c->S[i][k] = datal;
491 + c->S[i][k + 1] = datar;
492 + }
493 + }
494 +
495 +}
496 +
497 +void
498 +blf_key(blf_ctx *c, const u_int8_t *k, u_int16_t len)
499 +{
500 + /* Initialize S-boxes and subkeys with Pi */
501 + Blowfish_initstate(c);
502 +
503 + /* Transform S-boxes and subkeys with key */
504 + Blowfish_expand0state(c, k, len);
505 +}
506 +
507 +void
508 +blf_enc(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
509 +{
510 + u_int32_t *d;
511 + u_int16_t i;
512 +
513 + d = data;
514 + for (i = 0; i < blocks; i++) {
515 + Blowfish_encipher(c, d, d + 1);
516 + d += 2;
517 + }
518 +}
519 +
520 +void
521 +blf_dec(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
522 +{
523 + u_int32_t *d;
524 + u_int16_t i;
525 +
526 + d = data;
527 + for (i = 0; i < blocks; i++) {
528 + Blowfish_decipher(c, d, d + 1);
529 + d += 2;
530 + }
531 +}
532 +
533 +void
534 +blf_ecb_encrypt(blf_ctx *c, u_int8_t *data, u_int32_t len)
535 +{
536 + u_int32_t l, r;
537 + u_int32_t i;
538 +
539 + for (i = 0; i < len; i += 8) {
540 + l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
541 + r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
542 + Blowfish_encipher(c, &l, &r);
543 + data[0] = l >> 24 & 0xff;
544 + data[1] = l >> 16 & 0xff;
545 + data[2] = l >> 8 & 0xff;
546 + data[3] = l & 0xff;
547 + data[4] = r >> 24 & 0xff;
548 + data[5] = r >> 16 & 0xff;
549 + data[6] = r >> 8 & 0xff;
550 + data[7] = r & 0xff;
551 + data += 8;
552 + }
553 +}
554 +
555 +void
556 +blf_ecb_decrypt(blf_ctx *c, u_int8_t *data, u_int32_t len)
557 +{
558 + u_int32_t l, r;
559 + u_int32_t i;
560 +
561 + for (i = 0; i < len; i += 8) {
562 + l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
563 + r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
564 + Blowfish_decipher(c, &l, &r);
565 + data[0] = l >> 24 & 0xff;
566 + data[1] = l >> 16 & 0xff;
567 + data[2] = l >> 8 & 0xff;
568 + data[3] = l & 0xff;
569 + data[4] = r >> 24 & 0xff;
570 + data[5] = r >> 16 & 0xff;
571 + data[6] = r >> 8 & 0xff;
572 + data[7] = r & 0xff;
573 + data += 8;
574 + }
575 +}
576 +
577 +void
578 +blf_cbc_encrypt(blf_ctx *c, u_int8_t *iv, u_int8_t *data, u_int32_t len)
579 +{
580 + u_int32_t l, r;
581 + u_int32_t i, j;
582 +
583 + for (i = 0; i < len; i += 8) {
584 + for (j = 0; j < 8; j++)
585 + data[j] ^= iv[j];
586 + l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
587 + r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
588 + Blowfish_encipher(c, &l, &r);
589 + data[0] = l >> 24 & 0xff;
590 + data[1] = l >> 16 & 0xff;
591 + data[2] = l >> 8 & 0xff;
592 + data[3] = l & 0xff;
593 + data[4] = r >> 24 & 0xff;
594 + data[5] = r >> 16 & 0xff;
595 + data[6] = r >> 8 & 0xff;
596 + data[7] = r & 0xff;
597 + iv = data;
598 + data += 8;
599 + }
600 +}
601 +
602 +void
603 +blf_cbc_decrypt(blf_ctx *c, u_int8_t *iva, u_int8_t *data, u_int32_t len)
604 +{
605 + u_int32_t l, r;
606 + u_int8_t *iv;
607 + u_int32_t i, j;
608 +
609 + iv = data + len - 16;
610 + data = data + len - 8;
611 + for (i = len - 8; i >= 8; i -= 8) {
612 + l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
613 + r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
614 + Blowfish_decipher(c, &l, &r);
615 + data[0] = l >> 24 & 0xff;
616 + data[1] = l >> 16 & 0xff;
617 + data[2] = l >> 8 & 0xff;
618 + data[3] = l & 0xff;
619 + data[4] = r >> 24 & 0xff;
620 + data[5] = r >> 16 & 0xff;
621 + data[6] = r >> 8 & 0xff;
622 + data[7] = r & 0xff;
623 + for (j = 0; j < 8; j++)
624 + data[j] ^= iv[j];
625 + iv -= 8;
626 + data -= 8;
627 + }
628 + l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
629 + r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
630 + Blowfish_decipher(c, &l, &r);
631 + data[0] = l >> 24 & 0xff;
632 + data[1] = l >> 16 & 0xff;
633 + data[2] = l >> 8 & 0xff;
634 + data[3] = l & 0xff;
635 + data[4] = r >> 24 & 0xff;
636 + data[5] = r >> 16 & 0xff;
637 + data[6] = r >> 8 & 0xff;
638 + data[7] = r & 0xff;
639 + for (j = 0; j < 8; j++)
640 + data[j] ^= iva[j];
641 +}
642 +
643 +#if 0
644 +void
645 +report(u_int32_t data[], u_int16_t len)
646 +{
647 + u_int16_t i;
648 + for (i = 0; i < len; i += 2)
649 + printf("Block %0hd: %08lx %08lx.\n",
650 + i / 2, data[i], data[i + 1]);
651 +}
652 +void
653 +main(void)
654 +{
655 +
656 + blf_ctx c;
657 + char key[] = "AAAAA";
658 + char key2[] = "abcdefghijklmnopqrstuvwxyz";
659 +
660 + u_int32_t data[10];
661 + u_int32_t data2[] =
662 + {0x424c4f57l, 0x46495348l};
663 +
664 + u_int16_t i;
665 +
666 + /* First test */
667 + for (i = 0; i < 10; i++)
668 + data[i] = i;
669 +
670 + blf_key(&c, (u_int8_t *) key, 5);
671 + blf_enc(&c, data, 5);
672 + blf_dec(&c, data, 1);
673 + blf_dec(&c, data + 2, 4);
674 + printf("Should read as 0 - 9.\n");
675 + report(data, 10);
676 +
677 + /* Second test */
678 + blf_key(&c, (u_int8_t *) key2, strlen(key2));
679 + blf_enc(&c, data2, 1);
680 + printf("\nShould read as: 0x324ed0fe 0xf413a203.\n");
681 + report(data2, 2);
682 + blf_dec(&c, data2, 1);
683 + report(data2, 2);
684 +}
685 +#endif
ext/extconf.rbView
@@ -1,0 +1,3 @@
1 +require "mkmf"
2 +dir_config("bcrypt_ext")
3 +create_makefile("bcrypt_ext")
lib/bcrypt.rbView
@@ -1,0 +1,149 @@
1 +# A wrapper for OpenBSD's bcrypt/crypt_blowfish password-hashing algorithm.
2 +require "ext/bcrypt_ext"
3 +require "openssl"
4 +
5 +# A Ruby library implementing OpenBSD's bcrypt()/crypt_blowfish algorithm for
6 +# hashing passwords.
7 +module BCrypt
8 + module Errors # :nodoc:
9 + # The salt parameter provided to bcrypt() is invalid.
10 + class InvalidSalt < Exception; end
11 + # The hash parameter provided to bcrypt() is invalid.
12 + class InvalidHash < Exception; end
13 + # The cost parameter provided to bcrypt() is invalid.
14 + class InvalidCost < Exception; end
15 + end
16 +
17 + # The default computational expense parameter.
18 + DEFAULT_COST = 10
19 +
20 + module Internals # :nodoc:
21 + # contains the C-level methods and other internally bits
22 +
23 + # Maximum length of salts.
24 + MAX_SALT_LENGTH = 16
25 +
26 + # Wrap this in some error checking otherwise it'll explode.
27 + def _bc_crypt(key, salt)
28 + if valid_salt?(salt)
29 + __bc_crypt(key, salt)
30 + else
31 + raise Errors::InvalidSalt.new("invalid salt")
32 + end
33 + end
34 +
35 + def _bc_salt(cost = DEFAULT_COST)
36 + if cost.to_i > 0
37 + __bc_salt(cost, OpenSSL::Random.random_bytes(MAX_SALT_LENGTH))
38 + else
39 + raise Errors::InvalidCost.new("cost must be numeric and > 0")
40 + end
41 + end
42 +
43 + def valid_salt?(s)
44 + s =~ /^\$[0-9a-z]{2,}\$[0-9]{2,}\$[A-Za-z0-9\.\/]{22,}$/
45 + end
46 + end
47 +
48 + # Returns the cost factor which will result in computation times less than +upper_time_limit_in_ms+.
49 + #
50 + # Example:
51 + #
52 + # BCrypt.calibrate(200) #=> 10
53 + # BCrypt.calibrate(1000) #=> 12
54 + #
55 + # # should take less than 200ms
56 + # BCrypt::Password.create("woo", :cost => 10)
57 + #
58 + # # should take less than 1000ms
59 + # BCrypt::Password.create("woo", :cost => 12)
60 + def self.calibrate(upper_time_limit_in_ms)
61 + 40.times do |i|
62 + start_time = Time.now
63 + Password.create("testing testing", :cost => i+1)
64 + end_time = Time.now - start_time
65 + return i if end_time * 1_000 > upper_time_limit_in_ms
66 + end
67 + end
68 +
69 + # A password management class which allows you to safely store users' passwords and compare them.
70 + #
71 + # Example usage:
72 + #
73 + # include BCrypt
74 + #
75 + # # hash a user's password
76 + # @password = Password.create("my grand secret")
77 + # @password #=> "$2a$10$GtKs1Kbsig8ULHZzO1h2TetZfhO4Fmlxphp8bVKnUlZCBYYClPohG"
78 + #
79 + # # store it safely
80 + # @user.update_attribute(:password, @password)
81 + #
82 + # # read it back
83 + # @user.reload!
84 + # @db_password = Password.new(@user.password)
85 + #
86 + # # compare it after retrieval
87 + # @db_password == "my grand secret" #=> true
88 + # @db_password == "a paltry guess" #=> false
89 + #
90 + class Password < String
91 + # The hash portion of the stored password hash.
92 + attr_reader :hash
93 + # The salt of the store password hash (including version and cost).
94 + attr_reader :salt
95 + # The version of the bcrypt() algorithm used to create the hash.
96 + attr_reader :version
97 + # The cost factor used to create the hash.
98 + attr_reader :cost
99 +
100 + class << self
101 + # Hashes a secret, returning a BCrypt::Password instance. Takes an optional <tt>:cost</tt> option, which is a
102 + # logarithmic variable which determines how computational expensive the hash is to calculate (a <tt>:cost</tt> of
103 + # 4 is twice as much work as a <tt>:cost</tt> of 3). The higher the <tt>:cost</tt> the harder it becomes for
104 + # attackers to try to guess passwords (even if a copy of your database is stolen), but the slower it is to check
105 + # users' passwords.
106 + #
107 + # Example:
108 + #
109 + # @password = BCrypt::Password.create("my secret", :cost => 13)
110 + def create(secret, options = { :cost => DEFAULT_COST })
111 + Password.new(_bc_crypt(secret, _bc_salt(options[:cost])))
112 + end
113 + private
114 + include Internals
115 + end
116 +
117 + # Initializes a BCrypt::Password instance with the data from a stored hash.
118 + def initialize(raw_hash)
119 + if valid_hash?(raw_hash)
120 + self.replace(raw_hash)
121 + @version, @cost, @salt, @hash = split_hash(self)
122 + else
123 + raise Errors::InvalidHash.new("invalid hash")
124 + end
125 + end
126 +
127 + alias_method :exactly_equals, :==
128 +
129 + # Compares a potential secret against the hash. Returns true if the secret is the original secret, false otherwise.
130 + def ==(secret)
131 + self.exactly_equals(self.class._bc_crypt(secret, @salt))
132 + end
133 +
134 + private
135 + # Returns true if +h+ is a valid hash.
136 + def valid_hash?(h)
137 + h =~ /^\$[0-9a-z]{2}\$[0-9]{2}\$[A-Za-z0-9\.\/]{53}$/
138 + end
139 +
140 + # call-seq:
141 + # split_hash(raw_hash) -> version, cost, salt, hash
142 + #
143 + # Splits +h+ into version, cost, salt, and hash and returns them in that order.
144 + def split_hash(h)
145 + b, v, c, mash = h.split('$')
146 + return v, c.to_i, h[0, 29], mash[-31, 31]
147 + end
148 + end
149 +end
spec/bcrypt/bcrypt_spec.rbView
@@ -1,0 +1,9 @@
1 +require File.join(File.dirname(__FILE__), "..", "spec_helper")
2 +
3 +context "BCrypt" do
4 + specify "should calculate the optimal cost factor to fit in a specific time" do
5 + first = BCrypt.calibrate(100)
6 + second = BCrypt.calibrate(300)
7 + second.should >(first + 1)
8 + end
9 +end
spec/bcrypt/internals_spec.rbView
@@ -1,0 +1,48 @@
1 +require File.join(File.dirname(__FILE__), "..", "spec_helper")
2 +
3 +context "Generating BCrypt salts" do
4 + include BCrypt::Internals
5 +
6 + specify "should produce strings" do
7 + _bc_salt.should be_an_instance_of(String)
8 + end
9 +
10 + specify "should produce random data" do
11 + _bc_salt.should_not equal(_bc_salt)
12 + end
13 +
14 + specify "should raise a InvalidCostError if the cost parameter isn't numeric" do
15 + lambda { _bc_salt('woo') }.should raise_error(BCrypt::Errors::InvalidCost)
16 + end
17 +end
18 +
19 +context "Generating BCrypt hashes" do
20 + include BCrypt::Internals
21 +
22 + setup do
23 + @salt = _bc_salt
24 + @password = "woo"
25 + end
26 +
27 + specify "should produce a string" do
28 + _bc_crypt(@password, @salt).should be_an_instance_of(String)
29 + end
30 +
31 + specify "should raise an InvalidSaltError if the salt is invalid" do
32 + lambda { _bc_crypt(@password, 'nino') }.should raise_error(BCrypt::Errors::InvalidSalt)
33 + end
34 +
35 + specify "should be interoperable with other implementations" do
36 + # test vectors from the OpenWall implementation <http://www.openwall.com/crypt/>
37 + test_vectors = [
38 + ["U*U", "$2a$05$CCCCCCCCCCCCCCCCCCCCC.", "$2a$05$CCCCCCCCCCCCCCCCCCCCC.E5YPO9kmyuRGyh0XouQYb4YMJKvyOeW"],
39 + ["U*U*", "$2a$05$CCCCCCCCCCCCCCCCCCCCC.", "$2a$05$CCCCCCCCCCCCCCCCCCCCC.VGOzA784oUp/Z0DY336zx7pLYAy0lwK"],
40 + ["U*U*U", "$2a$05$XXXXXXXXXXXXXXXXXXXXXO", "$2a$05$XXXXXXXXXXXXXXXXXXXXXOAcXxm9kjPGEMsLznoKqmqw7tc8WCx4a"],
41 + ["", "$2a$05$CCCCCCCCCCCCCCCCCCCCC.", "$2a$05$CCCCCCCCCCCCCCCCCCCCC.7uG0VCzI2bS7j6ymqJi9CdcdxiRTWNy"],
42 + ["0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789", "$2a$05$abcdefghijklmnopqrstuu", "$2a$05$abcdefghijklmnopqrstuu5s2v8.iXieOjg/.AySBTTZIIVFJeBui"]
43 + ]
44 + for secret, salt, test_vector in test_vectors
45 + _bc_crypt(secret, salt).should eql(test_vector)
46 + end
47 + end
48 +end
spec/bcrypt/password_spec.rbView
@@ -1,0 +1,53 @@
1 +require File.join(File.dirname(__FILE__), "..", "spec_helper")
2 +
3 +context "Creating a hashed password" do
4 +
5 + setup do
6 + @secret = "wheedle"
7 + @password = BCrypt::Password.create(@secret)
8 + end
9 +
10 + specify "should return a BCrypt::Password" do
11 + @password.should be_an_instance_of(BCrypt::Password)
12 + end
13 +
14 + specify "should return a valid bcrypt password" do
15 + lambda { BCrypt::Password.new(@password) }.should_not raise_error
16 + end
17 +
18 +end
19 +
20 +context "Reading a hashed password" do
21 + setup do
22 + @secret = "U*U"
23 + @hash = "$2a$05$CCCCCCCCCCCCCCCCCCCCC.E5YPO9kmyuRGyh0XouQYb4YMJKvyOeW"
24 + end
25 +
26 + specify "should read the version, cost, salt, and hash" do
27 + password = BCrypt::Password.new(@hash)
28 + password.version.should eql("2a")
29 + password.cost.should equal(5)
30 + password.salt.should eql("$2a$05$CCCCCCCCCCCCCCCCCCCCC.")
31 + password.to_s.should_eql @hash
32 + end
33 +
34 + specify "should raise an InvalidHashError when given an invalid hash" do
35 + lambda { BCrypt::Password.new('weedle') }.should raise_error(BCrypt::Errors::InvalidHash)
36 + end
37 +end
38 +
39 +context "Comparing a hashed password with a secret" do
40 + setup do
41 + @secret = "U*U"
42 + @hash = "$2a$05$CCCCCCCCCCCCCCCCCCCCC.E5YPO9kmyuRGyh0XouQYb4YMJKvyOeW"
43 + @password = BCrypt::Password.create(@secret)
44 + end
45 +
46 + specify "should compare successfully to the original secret" do
47 + (@password == @secret).should be(true)
48 + end
49 +
50 + specify "should compare unsuccessfully to anything besides original secret" do
51 + (@password == "@secret").should be(false)
52 + end
53 +end
spec/spec_helper.rbView
@@ -1,0 +1,4 @@
1 +$LOAD_PATH.unshift File.dirname(__FILE__) + '/../lib'
2 +require "rubygems"
3 +require "spec"
4 +require "bcrypt"

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