line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
|
|
|
|
|
|
|
package Validate::Yubikey; |
2
|
|
|
|
|
|
|
|
3
|
|
|
|
|
|
|
our $VERSION = '0.03'; |
4
|
|
|
|
|
|
|
|
5
|
|
|
|
|
|
|
=head1 NAME |
6
|
|
|
|
|
|
|
|
7
|
|
|
|
|
|
|
Validate::Yubikey - Validate Yubikey OTPs |
8
|
|
|
|
|
|
|
|
9
|
|
|
|
|
|
|
=head1 SYNOPSIS |
10
|
|
|
|
|
|
|
|
11
|
|
|
|
|
|
|
use Validate::Yubikey; |
12
|
|
|
|
|
|
|
|
13
|
|
|
|
|
|
|
sub validate_callback { |
14
|
|
|
|
|
|
|
my $public_id = shift; |
15
|
|
|
|
|
|
|
|
16
|
|
|
|
|
|
|
return { |
17
|
|
|
|
|
|
|
iid => $iid, |
18
|
|
|
|
|
|
|
key => $key, |
19
|
|
|
|
|
|
|
count => $count, |
20
|
|
|
|
|
|
|
use => $use, |
21
|
|
|
|
|
|
|
lastuse => $lastuse, |
22
|
|
|
|
|
|
|
lastts => $lastts, |
23
|
|
|
|
|
|
|
}; |
24
|
|
|
|
|
|
|
} |
25
|
|
|
|
|
|
|
|
26
|
|
|
|
|
|
|
sub update_callback { |
27
|
|
|
|
|
|
|
my ($public_id, $data) = @_; |
28
|
|
|
|
|
|
|
} |
29
|
|
|
|
|
|
|
|
30
|
|
|
|
|
|
|
sub log_message { |
31
|
|
|
|
|
|
|
print shift, "\n"; |
32
|
|
|
|
|
|
|
} |
33
|
|
|
|
|
|
|
|
34
|
|
|
|
|
|
|
my $yubi = Validate::Yubikey->new( |
35
|
|
|
|
|
|
|
callback => \&validate_callback, |
36
|
|
|
|
|
|
|
update_callback => \&update_callback, |
37
|
|
|
|
|
|
|
log_callback => \&log_message, |
38
|
|
|
|
|
|
|
); |
39
|
|
|
|
|
|
|
|
40
|
|
|
|
|
|
|
my $otp_valid = $yubi->validate("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"); |
41
|
|
|
|
|
|
|
|
42
|
|
|
|
|
|
|
=head1 DESCRIPTION |
43
|
|
|
|
|
|
|
|
44
|
|
|
|
|
|
|
The Yubikey is a hardware OTP token produced by Yubico (L). |
45
|
|
|
|
|
|
|
|
46
|
|
|
|
|
|
|
This module provides validation of Yubikey OTPs. It relies on you to specify |
47
|
|
|
|
|
|
|
callback functions that handle retrieving token information from somewhere and |
48
|
|
|
|
|
|
|
updating the persistent information associated with each token. |
49
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
=cut |
51
|
|
|
|
|
|
|
|
52
|
1
|
|
|
1
|
|
12666
|
use Carp; |
|
1
|
|
|
|
|
1
|
|
|
1
|
|
|
|
|
56
|
|
53
|
1
|
|
|
1
|
|
385
|
use Crypt::Rijndael; |
|
1
|
|
|
|
|
299
|
|
|
1
|
|
|
|
|
676
|
|
54
|
|
|
|
|
|
|
|
55
|
|
|
|
|
|
|
sub hex2modhex { |
56
|
0
|
|
|
0
|
0
|
0
|
my $s = shift; |
57
|
0
|
|
|
|
|
0
|
$s =~ tr/0123456789abcdef/cbdefghijklnrtuv/; |
58
|
0
|
|
|
|
|
0
|
return $s; |
59
|
|
|
|
|
|
|
} |
60
|
|
|
|
|
|
|
|
61
|
|
|
|
|
|
|
sub modhex2hex { |
62
|
1
|
|
|
1
|
0
|
1
|
my $s = shift; |
63
|
1
|
|
|
|
|
3
|
$s =~ tr/cbdefghijklnrtuv/0123456789abcdef/; |
64
|
1
|
|
|
|
|
1
|
return $s; |
65
|
|
|
|
|
|
|
} |
66
|
|
|
|
|
|
|
|
67
|
|
|
|
|
|
|
sub yubicrc { |
68
|
1
|
|
|
1
|
0
|
1
|
my $data = shift; |
69
|
1
|
|
|
|
|
1
|
my $crc = 0xffff; |
70
|
|
|
|
|
|
|
|
71
|
1
|
|
|
|
|
4
|
foreach my $h (unpack('H2' x 16, $data)) { |
72
|
16
|
|
|
|
|
10
|
my $d = hex($h); |
73
|
16
|
|
|
|
|
12
|
$crc = $crc ^ ($d & 0xff); |
74
|
16
|
|
|
|
|
13
|
for (1..8) { |
75
|
128
|
|
|
|
|
70
|
my $n = $crc & 1; |
76
|
128
|
|
|
|
|
68
|
$crc = $crc >> 1; |
77
|
128
|
100
|
|
|
|
138
|
if ($n != 0) { |
78
|
64
|
|
|
|
|
50
|
$crc = $crc ^ 0x8408; |
79
|
|
|
|
|
|
|
} |
80
|
|
|
|
|
|
|
} |
81
|
|
|
|
|
|
|
} |
82
|
|
|
|
|
|
|
|
83
|
1
|
|
|
|
|
3
|
return $crc; |
84
|
|
|
|
|
|
|
} |
85
|
|
|
|
|
|
|
|
86
|
|
|
|
|
|
|
=head1 METHODS |
87
|
|
|
|
|
|
|
|
88
|
|
|
|
|
|
|
=head2 new |
89
|
|
|
|
|
|
|
|
90
|
|
|
|
|
|
|
Create a new Validate::Yubikey instance. |
91
|
|
|
|
|
|
|
|
92
|
|
|
|
|
|
|
=over 4 |
93
|
|
|
|
|
|
|
|
94
|
|
|
|
|
|
|
=item callback |
95
|
|
|
|
|
|
|
|
96
|
|
|
|
|
|
|
Required. |
97
|
|
|
|
|
|
|
|
98
|
|
|
|
|
|
|
=item update_callback |
99
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
Required. |
101
|
|
|
|
|
|
|
|
102
|
|
|
|
|
|
|
=item log_callback |
103
|
|
|
|
|
|
|
|
104
|
|
|
|
|
|
|
Optional. |
105
|
|
|
|
|
|
|
|
106
|
|
|
|
|
|
|
=back |
107
|
|
|
|
|
|
|
|
108
|
|
|
|
|
|
|
=cut |
109
|
|
|
|
|
|
|
|
110
|
|
|
|
|
|
|
sub new { |
111
|
1
|
|
|
1
|
1
|
321
|
my ($class, %data) = @_; |
112
|
1
|
|
|
|
|
2
|
my $self = {}; |
113
|
1
|
|
|
|
|
2
|
bless $self, $class; |
114
|
|
|
|
|
|
|
|
115
|
1
|
50
|
33
|
|
|
7
|
if (exists $data{callback} && ref($data{callback}) eq 'CODE') { |
116
|
1
|
|
|
|
|
4
|
$self->{callback} = $data{callback}; |
117
|
|
|
|
|
|
|
} else { |
118
|
0
|
|
|
|
|
0
|
croak __PACKAGE__, '->new called without callback'; |
119
|
|
|
|
|
|
|
} |
120
|
|
|
|
|
|
|
|
121
|
1
|
50
|
33
|
|
|
6
|
if (exists $data{update_callback} && ref($data{update_callback}) eq 'CODE') { |
122
|
1
|
|
|
|
|
2
|
$self->{update_callback} = $data{update_callback}; |
123
|
|
|
|
|
|
|
} else { |
124
|
0
|
|
|
|
|
0
|
croak __PACKAGE__, '->new called without update_callback'; |
125
|
|
|
|
|
|
|
} |
126
|
|
|
|
|
|
|
|
127
|
1
|
50
|
33
|
|
|
5
|
if (exists $data{log_callback} && ref($data{log_callback}) eq 'CODE') { |
128
|
1
|
|
|
|
|
2
|
$self->{log_callback} = $data{log_callback}; |
129
|
|
|
|
|
|
|
} else { |
130
|
0
|
|
|
0
|
|
0
|
$self->{log_callback} = sub {}; |
131
|
|
|
|
|
|
|
} |
132
|
|
|
|
|
|
|
|
133
|
1
|
50
|
|
|
|
1
|
if ($data{max_age}) { |
134
|
0
|
|
|
|
|
0
|
$self->{max_age} = $data{max_age}; |
135
|
|
|
|
|
|
|
} else { |
136
|
1
|
|
|
|
|
2
|
$self->{max_age} = 60; |
137
|
|
|
|
|
|
|
} |
138
|
|
|
|
|
|
|
|
139
|
1
|
|
|
|
|
2
|
return $self; |
140
|
|
|
|
|
|
|
} |
141
|
|
|
|
|
|
|
|
142
|
|
|
|
|
|
|
=head2 validate |
143
|
|
|
|
|
|
|
|
144
|
|
|
|
|
|
|
=over 4 |
145
|
|
|
|
|
|
|
|
146
|
|
|
|
|
|
|
=item Arguments: $otp, @callback_args |
147
|
|
|
|
|
|
|
|
148
|
|
|
|
|
|
|
=item Return Value: $success |
149
|
|
|
|
|
|
|
|
150
|
|
|
|
|
|
|
=back |
151
|
|
|
|
|
|
|
|
152
|
|
|
|
|
|
|
Validate an OTP. |
153
|
|
|
|
|
|
|
|
154
|
|
|
|
|
|
|
=cut |
155
|
|
|
|
|
|
|
|
156
|
|
|
|
|
|
|
sub validate { |
157
|
1
|
|
|
1
|
1
|
427
|
my ($self, $otp, @cbargs) = @_; |
158
|
|
|
|
|
|
|
|
159
|
1
|
50
|
|
|
|
6
|
if ($otp =~ /^([cbdefghijklnrtuv]{0,16})([cbdefghijklnrtuv]{32})$/) { |
160
|
1
|
|
|
|
|
3
|
my ($public_id, $cipher) = ($1, $2); |
161
|
|
|
|
|
|
|
|
162
|
1
|
|
|
|
|
3
|
my $token = $self->{callback}->($public_id, @cbargs); |
163
|
|
|
|
|
|
|
|
164
|
1
|
50
|
|
|
|
295
|
if (!$token) { |
165
|
0
|
|
|
|
|
0
|
$self->{log_callback}->(sprintf('callback returned no token for pid %s', $public_id)); |
166
|
0
|
|
|
|
|
0
|
return 0; |
167
|
|
|
|
|
|
|
} |
168
|
|
|
|
|
|
|
|
169
|
1
|
|
|
|
|
2
|
foreach my $k (qw/key count iid lastuse lastts use/) { |
170
|
6
|
50
|
|
|
|
10
|
if (!defined($token->{$k})) { |
171
|
0
|
|
|
|
|
0
|
carp "callback didn't return $k"; |
172
|
0
|
|
|
|
|
0
|
return 0; |
173
|
|
|
|
|
|
|
} |
174
|
|
|
|
|
|
|
} |
175
|
|
|
|
|
|
|
|
176
|
1
|
|
|
|
|
2
|
$cipher = &modhex2hex($cipher); |
177
|
|
|
|
|
|
|
|
178
|
1
|
|
|
|
|
20
|
my $crypt = Crypt::Rijndael->new(pack('H*', $token->{key})); |
179
|
1
|
|
|
|
|
6
|
my $plaintext = $crypt->decrypt(pack('H*', $cipher)); |
180
|
1
|
50
|
|
|
|
2
|
unless (length $plaintext) { |
181
|
0
|
|
|
|
|
0
|
carp 'decrypt failed'; |
182
|
0
|
|
|
|
|
0
|
return 0; |
183
|
|
|
|
|
|
|
} |
184
|
1
|
|
|
|
|
4
|
my $plainhex = unpack('H*', $plaintext); |
185
|
|
|
|
|
|
|
|
186
|
1
|
50
|
|
|
|
3
|
if (substr($plainhex, 0, length($token->{iid})) eq $token->{iid}) { |
187
|
1
|
|
|
|
|
2
|
my $crc = &yubicrc($plaintext); |
188
|
|
|
|
|
|
|
|
189
|
1
|
50
|
|
|
|
2
|
if ($crc == 0xf0b8) { |
190
|
1
|
|
|
|
|
3
|
my $count = hex(substr($plainhex, 14, 2).substr($plainhex, 12, 2)); |
191
|
1
|
|
|
|
|
1
|
my $use = hex(substr($plainhex, 22, 2)); |
192
|
1
|
|
|
|
|
1
|
my $low = substr($plainhex, 18, 2).substr($plainhex, 16, 2); |
193
|
1
|
|
|
|
|
2
|
my $high = substr($plainhex, 20, 2); |
194
|
1
|
|
|
|
|
1
|
my $ts = ((hex($high) << 16) + hex($low)) / 8; # XXX magic |
195
|
|
|
|
|
|
|
|
196
|
1
|
|
|
|
|
5
|
my $tinfo = sprintf('iid=%s, count=%d, use=%d, ts=%d', $token->{iid}, $count, $use, $ts); |
197
|
1
|
|
|
|
|
4
|
my $tsnow = $token->{lastts} + (time() - $token->{lastuse}); |
198
|
1
|
|
|
|
|
2
|
my $tsage = $tsnow - $ts; |
199
|
1
|
|
|
|
|
3
|
$self->{update_callback}->($public_id, { lastuse => time(), lastts => $ts }); |
200
|
|
|
|
|
|
|
|
201
|
1
|
50
|
|
|
|
7
|
if ($count < $token->{count}) { |
|
|
50
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
202
|
0
|
|
|
|
|
0
|
$self->{log_callback}->(sprintf('token %s failed: duplicate otp, count (%s)', $public_id, $tinfo)); |
203
|
|
|
|
|
|
|
} elsif ($count == $token->{count}) { |
204
|
0
|
0
|
|
|
|
0
|
if ($use <= $token->{use}) { |
|
|
0
|
|
|
|
|
|
205
|
0
|
|
|
|
|
0
|
$self->{log_callback}->(sprintf('token %s failed: duplicate otp in same session (%s)', $public_id, $tinfo)); |
206
|
|
|
|
|
|
|
} elsif ($tsage > $self->{max_age}) { |
207
|
0
|
|
|
|
|
0
|
$self->{log_callback}->(sprintf('token %s failed: expired otp is %d seconds old (%s)', $public_id, $tsage, $tinfo)); |
208
|
|
|
|
|
|
|
} else { |
209
|
0
|
|
|
|
|
0
|
$self->{log_callback}->(sprintf('token %s ok, same session (%s)', $public_id, $tinfo)); |
210
|
0
|
|
|
|
|
0
|
$self->{update_callback}->($public_id, { count => $count, use => $use }); |
211
|
0
|
|
|
|
|
0
|
return 1; |
212
|
|
|
|
|
|
|
} |
213
|
|
|
|
|
|
|
} elsif ($count > $token->{count}) { |
214
|
1
|
|
|
|
|
3
|
$self->{log_callback}->(sprintf('token %s ok (%s)', $public_id, $tinfo)); |
215
|
1
|
|
|
|
|
60
|
$self->{update_callback}->($public_id, { count => $count, use => $use }); |
216
|
1
|
|
|
|
|
7
|
return 1; |
217
|
|
|
|
|
|
|
} else { |
218
|
0
|
|
|
|
|
|
$self->{log_callback}->(sprintf('something bad with token %s (%s)', $public_id, $tinfo)); |
219
|
|
|
|
|
|
|
} |
220
|
|
|
|
|
|
|
} else { |
221
|
0
|
|
|
|
|
|
$self->{log_callback}->(sprintf('token %s failed: corrupt otp (crc)', $public_id)); |
222
|
|
|
|
|
|
|
} |
223
|
|
|
|
|
|
|
} else { |
224
|
0
|
|
|
|
|
|
$self->{log_callback}->(sprintf('token %s failed: corrupt otp (internal id)', $public_id)); |
225
|
|
|
|
|
|
|
} |
226
|
|
|
|
|
|
|
} else { |
227
|
0
|
|
|
|
|
|
$self->{log_callback}->(sprintf('token %s failed: invalid otp', $public_id)); |
228
|
|
|
|
|
|
|
} |
229
|
|
|
|
|
|
|
|
230
|
0
|
|
|
|
|
|
return 0; |
231
|
|
|
|
|
|
|
} |
232
|
|
|
|
|
|
|
|
233
|
|
|
|
|
|
|
=head1 CALLBACKS |
234
|
|
|
|
|
|
|
|
235
|
|
|
|
|
|
|
=head2 callback |
236
|
|
|
|
|
|
|
|
237
|
|
|
|
|
|
|
=over 4 |
238
|
|
|
|
|
|
|
|
239
|
|
|
|
|
|
|
=item Receives: $public_id, @callback_args |
240
|
|
|
|
|
|
|
|
241
|
|
|
|
|
|
|
=item Returns: \%token_data |
242
|
|
|
|
|
|
|
|
243
|
|
|
|
|
|
|
=back |
244
|
|
|
|
|
|
|
|
245
|
|
|
|
|
|
|
Called during validation when information about the token is required. |
246
|
|
|
|
|
|
|
Receives the public ID of the Yubikey. It's expected that your subroutine |
247
|
|
|
|
|
|
|
returns a hash reference containing the following keys: |
248
|
|
|
|
|
|
|
|
249
|
|
|
|
|
|
|
=over 4 |
250
|
|
|
|
|
|
|
|
251
|
|
|
|
|
|
|
=item iid - Internal ID |
252
|
|
|
|
|
|
|
|
253
|
|
|
|
|
|
|
=item key - Secret key |
254
|
|
|
|
|
|
|
|
255
|
|
|
|
|
|
|
=back |
256
|
|
|
|
|
|
|
|
257
|
|
|
|
|
|
|
Plus the four values stored by the L. |
258
|
|
|
|
|
|
|
|
259
|
|
|
|
|
|
|
=head2 update_callback |
260
|
|
|
|
|
|
|
|
261
|
|
|
|
|
|
|
=over 4 |
262
|
|
|
|
|
|
|
|
263
|
|
|
|
|
|
|
=item Receives: $public_id, \%token_data, @callback_args |
264
|
|
|
|
|
|
|
|
265
|
|
|
|
|
|
|
=item Returns: nothing |
266
|
|
|
|
|
|
|
|
267
|
|
|
|
|
|
|
=back |
268
|
|
|
|
|
|
|
|
269
|
|
|
|
|
|
|
Called to update the persistent storage of token parameters that enable replay |
270
|
|
|
|
|
|
|
protection. C<%token_data> will contain one or more of the following keys, |
271
|
|
|
|
|
|
|
which should be associated with the supplied C<$public_id>: |
272
|
|
|
|
|
|
|
|
273
|
|
|
|
|
|
|
=over 4 |
274
|
|
|
|
|
|
|
|
275
|
|
|
|
|
|
|
=item count |
276
|
|
|
|
|
|
|
|
277
|
|
|
|
|
|
|
=item use |
278
|
|
|
|
|
|
|
|
279
|
|
|
|
|
|
|
=item lastuse |
280
|
|
|
|
|
|
|
|
281
|
|
|
|
|
|
|
=item lastts |
282
|
|
|
|
|
|
|
|
283
|
|
|
|
|
|
|
=back |
284
|
|
|
|
|
|
|
|
285
|
|
|
|
|
|
|
These should all be integers. |
286
|
|
|
|
|
|
|
|
287
|
|
|
|
|
|
|
=head2 log_callback |
288
|
|
|
|
|
|
|
|
289
|
|
|
|
|
|
|
=over 4 |
290
|
|
|
|
|
|
|
|
291
|
|
|
|
|
|
|
=item Receives: $log_message |
292
|
|
|
|
|
|
|
|
293
|
|
|
|
|
|
|
=item Returns: nothing |
294
|
|
|
|
|
|
|
|
295
|
|
|
|
|
|
|
=back |
296
|
|
|
|
|
|
|
|
297
|
|
|
|
|
|
|
Called with messages produced during validation. If not supplied to L, |
298
|
|
|
|
|
|
|
logging will disabled. |
299
|
|
|
|
|
|
|
|
300
|
|
|
|
|
|
|
=head1 EXAMPLE |
301
|
|
|
|
|
|
|
|
302
|
|
|
|
|
|
|
Here's a simple program that uses L to store token information. |
303
|
|
|
|
|
|
|
|
304
|
|
|
|
|
|
|
package YKKSM::DB::Token; |
305
|
|
|
|
|
|
|
use base qw/DBIx::Class/; |
306
|
|
|
|
|
|
|
|
307
|
|
|
|
|
|
|
__PACKAGE__->load_components(qw/PK::Auto Core/); |
308
|
|
|
|
|
|
|
__PACKAGE__->table('token'); |
309
|
|
|
|
|
|
|
__PACKAGE__->add_columns(qw/uid pid iid key count use lastuse lastts/); |
310
|
|
|
|
|
|
|
__PACKAGE__->set_primary_key('uid'); |
311
|
|
|
|
|
|
|
|
312
|
|
|
|
|
|
|
package YKKSM::DB; |
313
|
|
|
|
|
|
|
use base qw/DBIx::Class::Schema/; |
314
|
|
|
|
|
|
|
|
315
|
|
|
|
|
|
|
__PACKAGE__->load_classes(qw/Token/); |
316
|
|
|
|
|
|
|
|
317
|
|
|
|
|
|
|
package YKTest; |
318
|
|
|
|
|
|
|
use Validate::Yubikey; |
319
|
|
|
|
|
|
|
|
320
|
|
|
|
|
|
|
my $schema = YKKSM::DB->connect("dbi:SQLite:dbname=yktest.db"); |
321
|
|
|
|
|
|
|
|
322
|
|
|
|
|
|
|
my $yk = Validate::Yubikey->new( |
323
|
|
|
|
|
|
|
callback => sub { |
324
|
|
|
|
|
|
|
my $pid = shift; |
325
|
|
|
|
|
|
|
my $token = $schema->resultset('Token')->find({ pid => $pid }); |
326
|
|
|
|
|
|
|
|
327
|
|
|
|
|
|
|
if ($token) { |
328
|
|
|
|
|
|
|
return { |
329
|
|
|
|
|
|
|
iid => $token->iid, |
330
|
|
|
|
|
|
|
key => $token->key, |
331
|
|
|
|
|
|
|
count => $token->count, |
332
|
|
|
|
|
|
|
use => $token->use, |
333
|
|
|
|
|
|
|
lastuse => $token->lastuse, |
334
|
|
|
|
|
|
|
lastts => $token->lastts, |
335
|
|
|
|
|
|
|
}; |
336
|
|
|
|
|
|
|
} else { |
337
|
|
|
|
|
|
|
return undef; |
338
|
|
|
|
|
|
|
} |
339
|
|
|
|
|
|
|
}, |
340
|
|
|
|
|
|
|
update_callback => sub { |
341
|
|
|
|
|
|
|
my ($pid, $data) = @_; |
342
|
|
|
|
|
|
|
my $token = $schema->resultset('Token')->find({ pid => $pid }); |
343
|
|
|
|
|
|
|
if ($token) { |
344
|
|
|
|
|
|
|
$token->update($data); |
345
|
|
|
|
|
|
|
} else { |
346
|
|
|
|
|
|
|
die "asked to update nonexistent token $pid"; |
347
|
|
|
|
|
|
|
} |
348
|
|
|
|
|
|
|
}, |
349
|
|
|
|
|
|
|
log_callback => sub { |
350
|
|
|
|
|
|
|
print shift, "\n"; |
351
|
|
|
|
|
|
|
}, |
352
|
|
|
|
|
|
|
); |
353
|
|
|
|
|
|
|
|
354
|
|
|
|
|
|
|
if ($yk->validate($ARGV[0])) { |
355
|
|
|
|
|
|
|
print "success!\n"; |
356
|
|
|
|
|
|
|
} else { |
357
|
|
|
|
|
|
|
print "failure 8(\n"; |
358
|
|
|
|
|
|
|
} |
359
|
|
|
|
|
|
|
|
360
|
|
|
|
|
|
|
=head1 AUTHOR |
361
|
|
|
|
|
|
|
|
362
|
|
|
|
|
|
|
Ben Wilber |
363
|
|
|
|
|
|
|
|
364
|
|
|
|
|
|
|
But most of this module was derived from Yubico's PHP stuff. |
365
|
|
|
|
|
|
|
|
366
|
|
|
|
|
|
|
=head1 LICENSE |
367
|
|
|
|
|
|
|
|
368
|
|
|
|
|
|
|
This library is free software and may be distributed under the same terms |
369
|
|
|
|
|
|
|
as perl itself. |
370
|
|
|
|
|
|
|
|
371
|
|
|
|
|
|
|
=cut |
372
|
|
|
|
|
|
|
|
373
|
|
|
|
|
|
|
1; |