1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
|
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Crypt_GPG is a package to use GPG from PHP
*
* This file contains an object that handles GnuPG key generation.
*
* PHP version 5
*
* LICENSE:
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @category Encryption
* @package Crypt_GPG
* @author Michael Gauthier <mike@silverorange.com>
* @copyright 2011-2013 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id:$
* @link http://pear.php.net/package/Crypt_GPG
* @link http://www.gnupg.org/
*/
/**
* Base class for GPG methods
*/
require_once 'Crypt/GPGAbstract.php';
/**
* Status output handler for key generation
*/
require_once 'Crypt/GPG/KeyGeneratorStatusHandler.php';
/**
* Error output handler for key generation
*/
require_once 'Crypt/GPG/KeyGeneratorErrorHandler.php';
// {{{ class Crypt_GPG_KeyGenerator
/**
* GnuPG key generator
*
* This class provides an object oriented interface for generating keys with
* the GNU Privacy Guard (GPG).
*
* Secure key generation requires true random numbers, and as such can be slow.
* If the operating system runs out of entropy, key generation will block until
* more entropy is available.
*
* If quick key generation is important, a hardware entropy generator, or an
* entropy gathering daemon may be installed. For example, administrators of
* Debian systems may want to install the 'randomsound' package.
*
* This class uses the experimental automated key generation support available
* in GnuPG. See <b>doc/DETAILS</b> in the
* {@link http://www.gnupg.org/download/ GPG distribution} for detailed
* information on the key generation format.
*
* @category Encryption
* @package Crypt_GPG
* @author Nathan Fredrickson <nathan@silverorange.com>
* @author Michael Gauthier <mike@silverorange.com>
* @copyright 2005-2013 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @link http://pear.php.net/package/Crypt_GPG
* @link http://www.gnupg.org/
*/
class Crypt_GPG_KeyGenerator extends Crypt_GPGAbstract
{
// {{{ protected properties
/**
* The expiration date of generated keys
*
* @var integer
*
* @see Crypt_GPG_KeyGenerator::setExpirationDate()
*/
protected $expirationDate = 0;
/**
* The passphrase of generated keys
*
* @var string
*
* @see Crypt_GPG_KeyGenerator::setPassphrase()
*/
protected $passphrase = '';
/**
* The algorithm for generated primary keys
*
* @var integer
*
* @see Crypt_GPG_KeyGenerator::setKeyParams()
*/
protected $keyAlgorithm = Crypt_GPG_SubKey::ALGORITHM_DSA;
/**
* The size of generated primary keys
*
* @var integer
*
* @see Crypt_GPG_KeyGenerator::setKeyParams()
*/
protected $keySize = 1024;
/**
* The usages of generated primary keys
*
* This is a bitwise combination of the usage constants in
* {@link Crypt_GPG_SubKey}.
*
* @var integer
*
* @see Crypt_GPG_KeyGenerator::setKeyParams()
*/
protected $keyUsage = 6; // USAGE_SIGN | USAGE_CERTIFY
/**
* The algorithm for generated sub-keys
*
* @var integer
*
* @see Crypt_GPG_KeyGenerator::setSubKeyParams()
*/
protected $subKeyAlgorithm = Crypt_GPG_SubKey::ALGORITHM_ELGAMAL_ENC;
/**
* The size of generated sub-keys
*
* @var integer
*
* @see Crypt_GPG_KeyGenerator::setSubKeyParams()
*/
protected $subKeySize = 2048;
/**
* The usages of generated sub-keys
*
* This is a bitwise combination of the usage constants in
* {@link Crypt_GPG_SubKey}.
*
* @var integer
*
* @see Crypt_GPG_KeyGenerator::setSubKeyParams()
*/
protected $subKeyUsage = Crypt_GPG_SubKey::USAGE_ENCRYPT;
/**
* The GnuPG status handler to use for key generation
*
* @var Crypt_GPG_KeyGeneratorStatusHandler
*
* @see Crypt_GPG_KeyGenerator::setStatusHandler()
*/
protected $statusHandler = null;
/**
* The GnuPG error handler to use for key generation
*
* @var Crypt_GPG_KeyGeneratorErrorHandler
*
* @see Crypt_GPG_KeyGenerator::setErrorHandler()
*/
protected $errorHandler = null;
// }}}
// {{{ __construct()
/**
* Creates a new GnuPG key generator
*
* Available options are:
*
* - <kbd>string homedir</kbd> - the directory where the GPG
* keyring files are stored. If not
* specified, Crypt_GPG uses the
* default of <kbd>~/.gnupg</kbd>.
* - <kbd>string publicKeyring</kbd> - the file path of the public
* keyring. Use this if the public
* keyring is not in the homedir, or
* if the keyring is in a directory
* not writable by the process
* invoking GPG (like Apache). Then
* you can specify the path to the
* keyring with this option
* (/foo/bar/pubring.gpg), and specify
* a writable directory (like /tmp)
* using the <i>homedir</i> option.
* - <kbd>string privateKeyring</kbd> - the file path of the private
* keyring. Use this if the private
* keyring is not in the homedir, or
* if the keyring is in a directory
* not writable by the process
* invoking GPG (like Apache). Then
* you can specify the path to the
* keyring with this option
* (/foo/bar/secring.gpg), and specify
* a writable directory (like /tmp)
* using the <i>homedir</i> option.
* - <kbd>string trustDb</kbd> - the file path of the web-of-trust
* database. Use this if the trust
* database is not in the homedir, or
* if the database is in a directory
* not writable by the process
* invoking GPG (like Apache). Then
* you can specify the path to the
* trust database with this option
* (/foo/bar/trustdb.gpg), and specify
* a writable directory (like /tmp)
* using the <i>homedir</i> option.
* - <kbd>string binary</kbd> - the location of the GPG binary. If
* not specified, the driver attempts
* to auto-detect the GPG binary
* location using a list of known
* default locations for the current
* operating system. The option
* <kbd>gpgBinary</kbd> is a
* deprecated alias for this option.
* - <kbd>string agent</kbd> - the location of the GnuPG agent
* binary. The gpg-agent is only
* used for GnuPG 2.x. If not
* specified, the engine attempts
* to auto-detect the gpg-agent
* binary location using a list of
* know default locations for the
* current operating system.
* - <kbd>boolean debug</kbd> - whether or not to use debug mode.
* When debug mode is on, all
* communication to and from the GPG
* subprocess is logged. This can be
*
* @param array $options optional. An array of options used to create the
* GPG object. All options are optional and are
* represented as key-value pairs.
*
* @throws Crypt_GPG_FileException if the <kbd>homedir</kbd> does not exist
* and cannot be created. This can happen if <kbd>homedir</kbd> is
* not specified, Crypt_GPG is run as the web user, and the web
* user has no home directory. This exception is also thrown if any
* of the options <kbd>publicKeyring</kbd>,
* <kbd>privateKeyring</kbd> or <kbd>trustDb</kbd> options are
* specified but the files do not exist or are are not readable.
* This can happen if the user running the Crypt_GPG process (for
* example, the Apache user) does not have permission to read the
* files.
*
* @throws PEAR_Exception if the provided <kbd>binary</kbd> is invalid, or
* if no <kbd>binary</kbd> is provided and no suitable binary could
* be found.
*
* @throws PEAR_Exception if the provided <kbd>agent</kbd> is invalid, or
* if no <kbd>agent</kbd> is provided and no suitable gpg-agent
* cound be found.
*/
public function __construct(array $options = array())
{
parent::__construct($options);
$this->statusHandler = new Crypt_GPG_KeyGeneratorStatusHandler();
$this->errorHandler = new Crypt_GPG_KeyGeneratorErrorHandler();
}
// }}}
// {{{ setExpirationDate()
/**
* Sets the expiration date of generated keys
*
* @param string|integer $date either a string that may be parsed by
* PHP's strtotime() function, or an integer
* timestamp representing the number of seconds
* since the UNIX epoch. This date must be at
* least one date in the future. Keys that
* expire in the past may not be generated. Use
* an expiration date of 0 for keys that do not
* expire.
*
* @throws InvalidArgumentException if the date is not a valid format, or
* if the date is not at least one day in
* the future, or if the date is greater
* than 2038-01-19T03:14:07.
*
* @return Crypt_GPG_KeyGenerator the current object, for fluent interface.
*/
public function setExpirationDate($date)
{
if (is_int($date) || ctype_digit(strval($date))) {
$expirationDate = intval($date);
} else {
$expirationDate = strtotime($date);
}
if ($expirationDate === false) {
throw new InvalidArgumentException(
sprintf(
'Invalid expiration date format: "%s". Please use a ' .
'format compatible with PHP\'s strtotime().',
$date
)
);
}
if ($expirationDate !== 0 && $expirationDate < time() + 86400) {
throw new InvalidArgumentException(
'Expiration date must be at least a day in the future.'
);
}
// GnuPG suffers from the 2038 bug
if ($expirationDate > 2147483647) {
throw new InvalidArgumentException(
'Expiration date must not be greater than 2038-01-19T03:14:07.'
);
}
$this->expirationDate = $expirationDate;
return $this;
}
// }}}
// {{{ setPassphrase()
/**
* Sets the passphrase of generated keys
*
* @param string $passphrase the passphrase to use for generated keys. Use
* null or an empty string for no passphrase.
*
* @return Crypt_GPG_KeyGenerator the current object, for fluent interface.
*/
public function setPassphrase($passphrase)
{
$this->passphrase = strval($passphrase);
return $this;
}
// }}}
// {{{ setKeyParams()
/**
* Sets the parameters for the primary key of generated key-pairs
*
* @param integer $algorithm the algorithm used by the key. This should be
* one of the Crypt_GPG_SubKey::ALGORITHM_*
* constants.
* @param integer $size optional. The size of the key. Different
* algorithms have different size requirements.
* If not specified, the default size for the
* specified algorithm will be used. If an
* invalid key size is used, GnuPG will do its
* best to round it to a valid size.
* @param integer $usage optional. A bitwise combination of key usages.
* If not specified, the primary key will be used
* only to sign and certify. This is the default
* behavior of GnuPG in interactive mode. Use
* the Crypt_GPG_SubKey::USAGE_* constants here.
* The primary key may be used to certify even
* if the certify usage is not specified.
*
* @return Crypt_GPG_KeyGenerator the current object, for fluent interface.
*/
public function setKeyParams($algorithm, $size = 0, $usage = 0)
{
$apgorithm = intval($algorithm);
if ($algorithm === Crypt_GPG_SubKey::ALGORITHM_ELGAMAL_ENC) {
throw new Crypt_GPG_InvalidKeyParamsException(
'Primary key algorithm must be capable of signing. The ' .
'Elgamal algorithm can only encrypt.',
0,
$algorithm,
$size,
$usage
);
}
if ($size != 0) {
$size = intval($size);
}
if ($usage != 0) {
$usage = intval($usage);
}
$usageEncrypt = Crypt_GPG_SubKey::USAGE_ENCRYPT;
if ( $algorithm === Crypt_GPG_SubKey::ALGORITHM_DSA
&& ($usage & $usageEncrypt) === $usageEncrypt
) {
throw new Crypt_GPG_InvalidKeyParamsException(
'The DSA algorithm is not capable of encrypting. Please ' .
'specify a different algorithm or do not include encryption ' .
'as a usage for the primary key.',
0,
$algorithm,
$size,
$usage
);
}
$this->keyAlgorithm = $algorithm;
if ($size != 0) {
$this->keySize = $size;
}
if ($usage != 0) {
$this->keyUsage = $usage;
}
return $this;
}
// }}}
// {{{ setSubKeyParams()
/**
* Sets the parameters for the sub-key of generated key-pairs
*
* @param integer $algorithm the algorithm used by the key. This should be
* one of the Crypt_GPG_SubKey::ALGORITHM_*
* constants.
* @param integer $size optional. The size of the key. Different
* algorithms have different size requirements.
* If not specified, the default size for the
* specified algorithm will be used. If an
* invalid key size is used, GnuPG will do its
* best to round it to a valid size.
* @param integer $usage optional. A bitwise combination of key usages.
* If not specified, the sub-key will be used
* only to encrypt. This is the default behavior
* of GnuPG in interactive mode. Use the
* Crypt_GPG_SubKey::USAGE_* constants here.
*
* @return Crypt_GPG_KeyGenerator the current object, for fluent interface.
*/
public function setSubKeyParams($algorithm, $size = '', $usage = 0)
{
$apgorithm = intval($algorithm);
if ($size != 0) {
$size = intval($size);
}
if ($usage != 0) {
$usage = intval($usage);
}
$usageSign = Crypt_GPG_SubKey::USAGE_SIGN;
if ( $algorithm === Crypt_GPG_SubKey::ALGORITHM_ELGAMAL_ENC
&& ($usage & $usageSign) === $usageSign
) {
throw new Crypt_GPG_InvalidKeyParamsException(
'The Elgamal algorithm is not capable of signing. Please ' .
'specify a different algorithm or do not include signing ' .
'as a usage for the sub-key.',
0,
$algorithm,
$size,
$usage
);
}
$usageEncrypt = Crypt_GPG_SubKey::USAGE_ENCRYPT;
if ( $algorithm === Crypt_GPG_SubKey::ALGORITHM_DSA
&& ($usage & $usageEncrypt) === $usageEncrypt
) {
throw new Crypt_GPG_InvalidKeyParamsException(
'The DSA algorithm is not capable of encrypting. Please ' .
'specify a different algorithm or do not include encryption ' .
'as a usage for the sub-key.',
0,
$algorithm,
$size,
$usage
);
}
$this->subKeyAlgorithm = $algorithm;
if ($size != 0) {
$this->subKeySize = $size;
}
if ($usage != 0) {
$this->subKeyUsage = $usage;
}
return $this;
}
// }}}
// {{{ setStatusHandler()
/**
* Sets the status handler to use for key generation
*
* Normally this method does not need to be used. It provides a means for
* dependency injection.
*
* @param Crypt_GPG_KeyStatusHandler $handler the key status handler to
* use.
*
* @return Crypt_GPG_KeyGenerator the current object, for fluent interface.
*/
public function setStatusHandler(
Crypt_GPG_KeyGeneratorStatusHandler $handler
) {
$this->statusHandler = $handler;
return $this;
}
// }}}
// {{{ setErrorHandler()
/**
* Sets the error handler to use for key generation
*
* Normally this method does not need to be used. It provides a means for
* dependency injection.
*
* @param Crypt_GPG_KeyErrorHandler $handler the key error handler to
* use.
*
* @return Crypt_GPG_KeyGenerator the current object, for fluent interface.
*/
public function setErrorHandler(
Crypt_GPG_KeyGeneratorErrorHandler $handler
) {
$this->errorHandler = $handler;
return $this;
}
// }}}
// {{{ generateKey()
/**
* Generates a new key-pair in the current keyring
*
* Secure key generation requires true random numbers, and as such can be
* solw. If the operating system runs out of entropy, key generation will
* block until more entropy is available.
*
* If quick key generation is important, a hardware entropy generator, or
* an entropy gathering daemon may be installed. For example,
* administrators of Debian systems may want to install the 'randomsound'
* package.
*
* @param string|Crypt_GPG_UserId $name either a {@link Crypt_GPG_UserId}
* object, or a string containing
* the name of the user id.
* @param string $email optional. If <i>$name</i> is
* specified as a string, this is
* the email address of the user id.
* @param string $comment optional. If <i>$name</i> is
* specified as a string, this is
* the comment of the user id.
*
* @return Crypt_GPG_Key the newly generated key.
*
* @throws Crypt_GPG_KeyNotCreatedException if the key parameters are
* incorrect, if an unknown error occurs during key generation, or
* if the newly generated key is not found in the keyring.
*
* @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
* Use the <kbd>debug</kbd> option and file a bug report if these
* exceptions occur.
*/
public function generateKey($name, $email = '', $comment = '')
{
$handle = uniqid('key', true);
$userId = $this->getUserId($name, $email, $comment);
$keyParams = array(
'Key-Type' => $this->keyAlgorithm,
'Key-Length' => $this->keySize,
'Key-Usage' => $this->getUsage($this->keyUsage),
'Subkey-Type' => $this->subKeyAlgorithm,
'Subkey-Length' => $this->subKeySize,
'Subkey-Usage' => $this->getUsage($this->subKeyUsage),
'Name-Real' => $userId->getName(),
'Handle' => $handle,
);
if ($this->expirationDate != 0) {
// GnuPG only accepts granularity of days
$expirationDate = date('Y-m-d', $this->expirationDate);
$keyParams['Expire-Date'] = $expirationDate;
}
if ($this->passphrase != '') {
$keyParams['Passphrase'] = $this->passphrase;
}
if ($userId->getEmail() != '') {
$keyParams['Name-Email'] = $userId->getEmail();
}
if ($userId->getComment() != '') {
$keyParams['Name-Comment'] = $userId->getComment();
}
$keyParamsFormatted = array();
foreach ($keyParams as $name => $value) {
$keyParamsFormatted[] = $name . ': ' . $value;
}
$input = implode("\n", $keyParamsFormatted) . "\n%commit\n";
$statusHandler = clone $this->statusHandler;
$statusHandler->setHandle($handle);
$errorHandler = clone $this->errorHandler;
$this->engine->reset();
$this->engine->addStatusHandler(array($statusHandler, 'handle'));
$this->engine->addErrorHandler(array($errorHandler, 'handle'));
$this->engine->setInput($input);
$this->engine->setOutput($output);
$this->engine->setOperation('--gen-key', array('--batch'));
$this->engine->run();
$code = $errorHandler->getErrorCode();
switch ($code) {
case self::ERROR_BAD_KEY_PARAMS:
switch ($errorHandler->getLineNumber()) {
case 1:
throw new Crypt_GPG_InvalidKeyParamsException(
'Invalid primary key algorithm specified.',
0,
$this->keyAlgorithm,
$this->keySize,
$this->keyUsage
);
case 4:
throw new Crypt_GPG_InvalidKeyParamsException(
'Invalid sub-key algorithm specified.',
0,
$this->subKeyAlgorithm,
$this->subKeySize,
$this->subKeyUsage
);
default:
throw new Crypt_GPG_InvalidKeyParamsException(
'Invalid key algorithm specified.'
);
}
}
$code = $this->engine->getErrorCode();
switch ($code) {
case self::ERROR_NONE:
break;
default:
throw new Crypt_GPG_Exception(
'Unknown error generating key-pair. Please use the \'debug\' ' .
'option when creating the Crypt_GPG object, and file a bug ' .
'report at ' . self::BUG_URI,
$code
);
}
$code = $statusHandler->getErrorCode();
switch ($code) {
case self::ERROR_NONE:
break;
case self::ERROR_KEY_NOT_CREATED:
throw new Crypt_GPG_KeyNotCreatedException(
'Unable to create new key-pair. Invalid key parameters. ' .
'Make sure the specified key algorithms and sizes are ' .
'correct.',
$code
);
}
$fingerprint = $statusHandler->getKeyFingerprint();
$keys = $this->_getKeys($fingerprint);
if (count($keys) === 0) {
throw new Crypt_GPG_KeyNotCreatedException(
sprintf(
'Newly created key "%s" not found in keyring.',
$fingerprint
)
);
}
return $keys[0];
}
// }}}
// {{{ getUsage()
/**
* Builds a GnuPG key usage string suitable for key generation
*
* See <b>doc/DETAILS</b> in the
* {@link http://www.gnupg.org/download/ GPG distribution} for detailed
* information on the key usage format.
*
* @param integer $usage a bitwise combination of the key usages. This is
* a combination of the Crypt_GPG_SubKey::USAGE_*
* constants.
*
* @return string the key usage string.
*/
protected function getUsage($usage)
{
$map = array(
Crypt_GPG_SubKey::USAGE_ENCRYPT => 'encrypt',
Crypt_GPG_SubKey::USAGE_SIGN => 'sign',
Crypt_GPG_SubKey::USAGE_CERTIFY => 'cert',
Crypt_GPG_SubKey::USAGE_AUTHENTICATION => 'auth',
);
// cert is always used for primary keys and does not need to be
// specified
$usage &= ~Crypt_GPG_SubKey::USAGE_CERTIFY;
$usageArray = array();
foreach ($map as $key => $value) {
if (($usage & $key) === $key) {
$usageArray[] = $value;
}
}
return implode(',', $usageArray);
}
// }}}
// {{{ getUserId()
/**
* Gets a user id object from parameters
*
* @param string|Crypt_GPG_UserId $name either a {@link Crypt_GPG_UserId}
* object, or a string containing
* the name of the user id.
* @param string $email optional. If <i>$name</i> is
* specified as a string, this is
* the email address of the user id.
* @param string $comment optional. If <i>$name</i> is
* specified as a string, this is
* the comment of the user id.
*
* @return Crypt_GPG_UserId a user id object for the specified parameters.
*/
protected function getUserId($name, $email = '', $comment = '')
{
if ($name instanceof Crypt_GPG_UserId) {
$userId = $name;
} else {
$userId = new Crypt_GPG_UserId();
$userId->setName($name)->setEmail($email)->setComment($comment);
}
return $userId;
}
// }}}
}
// }}}
?>
|