summaryrefslogtreecommitdiff
path: root/test/openssl/test_asn1.rb
blob: 5f4575516a3fdc59e02d53cf3e83cd9fb1815c17 (plain)
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
# frozen_string_literal: true
require_relative 'utils'

if defined?(OpenSSL)

class  OpenSSL::TestASN1 < OpenSSL::TestCase
  def test_decode_x509_certificate
    subj = OpenSSL::X509::Name.parse("/DC=org/DC=ruby-lang/CN=TestCA")
    key = Fixtures.pkey("rsa1024")
    now = Time.at(Time.now.to_i) # suppress usec
    s = 0xdeadbeafdeadbeafdeadbeafdeadbeaf
    exts = [
      ["basicConstraints","CA:TRUE,pathlen:1",true],
      ["keyUsage","keyCertSign, cRLSign",true],
      ["subjectKeyIdentifier","hash",false],
    ]
    dgst = OpenSSL::Digest::SHA1.new
    cert = OpenSSL::TestUtils.issue_cert(
      subj, key, s, exts, nil, nil, digest: dgst, not_before: now, not_after: now+3600)


    asn1 = OpenSSL::ASN1.decode(cert)
    assert_equal(OpenSSL::ASN1::Sequence, asn1.class)
    assert_equal(3, asn1.value.size)
    tbs_cert, sig_alg, sig_val = *asn1.value

    assert_equal(OpenSSL::ASN1::Sequence, tbs_cert.class)
    assert_equal(8, tbs_cert.value.size)

    version = tbs_cert.value[0]
    assert_equal(:CONTEXT_SPECIFIC, version.tag_class)
    assert_equal(0, version.tag)
    assert_equal(1, version.value.size)
    assert_equal(OpenSSL::ASN1::Integer, version.value[0].class)
    assert_equal(2, version.value[0].value)

    serial = tbs_cert.value[1]
    assert_equal(OpenSSL::ASN1::Integer, serial.class)
    assert_equal(0xdeadbeafdeadbeafdeadbeafdeadbeaf, serial.value)

    sig = tbs_cert.value[2]
    assert_equal(OpenSSL::ASN1::Sequence, sig.class)
    assert_equal(2, sig.value.size)
    assert_equal(OpenSSL::ASN1::ObjectId, sig.value[0].class)
    assert_equal("1.2.840.113549.1.1.5", sig.value[0].oid)
    assert_equal(OpenSSL::ASN1::Null, sig.value[1].class)

    dn = tbs_cert.value[3] # issuer
    assert_equal(subj.hash, OpenSSL::X509::Name.new(dn).hash)
    assert_equal(OpenSSL::ASN1::Sequence, dn.class)
    assert_equal(3, dn.value.size)
    assert_equal(OpenSSL::ASN1::Set, dn.value[0].class)
    assert_equal(OpenSSL::ASN1::Set, dn.value[1].class)
    assert_equal(OpenSSL::ASN1::Set, dn.value[2].class)
    assert_equal(1, dn.value[0].value.size)
    assert_equal(1, dn.value[1].value.size)
    assert_equal(1, dn.value[2].value.size)
    assert_equal(OpenSSL::ASN1::Sequence, dn.value[0].value[0].class)
    assert_equal(OpenSSL::ASN1::Sequence, dn.value[1].value[0].class)
    assert_equal(OpenSSL::ASN1::Sequence, dn.value[2].value[0].class)
    assert_equal(2, dn.value[0].value[0].value.size)
    assert_equal(2, dn.value[1].value[0].value.size)
    assert_equal(2, dn.value[2].value[0].value.size)
    oid, value = *dn.value[0].value[0].value
    assert_equal(OpenSSL::ASN1::ObjectId, oid.class)
    assert_equal("0.9.2342.19200300.100.1.25", oid.oid)
    assert_equal(OpenSSL::ASN1::IA5String, value.class)
    assert_equal("org", value.value)
    oid, value = *dn.value[1].value[0].value
    assert_equal(OpenSSL::ASN1::ObjectId, oid.class)
    assert_equal("0.9.2342.19200300.100.1.25", oid.oid)
    assert_equal(OpenSSL::ASN1::IA5String, value.class)
    assert_equal("ruby-lang", value.value)
    oid, value = *dn.value[2].value[0].value
    assert_equal(OpenSSL::ASN1::ObjectId, oid.class)
    assert_equal("2.5.4.3", oid.oid)
    assert_equal(OpenSSL::ASN1::UTF8String, value.class)
    assert_equal("TestCA", value.value)

    validity = tbs_cert.value[4]
    assert_equal(OpenSSL::ASN1::Sequence, validity.class)
    assert_equal(2, validity.value.size)
    assert_equal(OpenSSL::ASN1::UTCTime, validity.value[0].class)
    assert_equal(now, validity.value[0].value)
    assert_equal(OpenSSL::ASN1::UTCTime, validity.value[1].class)
    assert_equal(now+3600, validity.value[1].value)

    dn = tbs_cert.value[5] # subject
    assert_equal(subj.hash, OpenSSL::X509::Name.new(dn).hash)
    assert_equal(OpenSSL::ASN1::Sequence, dn.class)
    assert_equal(3, dn.value.size)
    assert_equal(OpenSSL::ASN1::Set, dn.value[0].class)
    assert_equal(OpenSSL::ASN1::Set, dn.value[1].class)
    assert_equal(OpenSSL::ASN1::Set, dn.value[2].class)
    assert_equal(1, dn.value[0].value.size)
    assert_equal(1, dn.value[1].value.size)
    assert_equal(1, dn.value[2].value.size)
    assert_equal(OpenSSL::ASN1::Sequence, dn.value[0].value[0].class)
    assert_equal(OpenSSL::ASN1::Sequence, dn.value[1].value[0].class)
    assert_equal(OpenSSL::ASN1::Sequence, dn.value[2].value[0].class)
    assert_equal(2, dn.value[0].value[0].value.size)
    assert_equal(2, dn.value[1].value[0].value.size)
    assert_equal(2, dn.value[2].value[0].value.size)
    oid, value = *dn.value[0].value[0].value
    assert_equal(OpenSSL::ASN1::ObjectId, oid.class)
    assert_equal("0.9.2342.19200300.100.1.25", oid.oid)
    assert_equal(OpenSSL::ASN1::IA5String, value.class)
    assert_equal("org", value.value)
    oid, value = *dn.value[1].value[0].value
    assert_equal(OpenSSL::ASN1::ObjectId, oid.class)
    assert_equal("0.9.2342.19200300.100.1.25", oid.oid)
    assert_equal(OpenSSL::ASN1::IA5String, value.class)
    assert_equal("ruby-lang", value.value)
    oid, value = *dn.value[2].value[0].value
    assert_equal(OpenSSL::ASN1::ObjectId, oid.class)
    assert_equal("2.5.4.3", oid.oid)
    assert_equal(OpenSSL::ASN1::UTF8String, value.class)
    assert_equal("TestCA", value.value)

    pkey = tbs_cert.value[6]
    assert_equal(OpenSSL::ASN1::Sequence, pkey.class)
    assert_equal(2, pkey.value.size)
    assert_equal(OpenSSL::ASN1::Sequence, pkey.value[0].class)
    assert_equal(2, pkey.value[0].value.size)
    assert_equal(OpenSSL::ASN1::ObjectId, pkey.value[0].value[0].class)
    assert_equal("1.2.840.113549.1.1.1", pkey.value[0].value[0].oid)
    assert_equal(OpenSSL::ASN1::BitString, pkey.value[1].class)
    assert_equal(0, pkey.value[1].unused_bits)
    spkey = OpenSSL::ASN1.decode(pkey.value[1].value)
    assert_equal(OpenSSL::ASN1::Sequence, spkey.class)
    assert_equal(2, spkey.value.size)
    assert_equal(OpenSSL::ASN1::Integer, spkey.value[0].class)
    assert_equal(cert.public_key.n, spkey.value[0].value)
    assert_equal(OpenSSL::ASN1::Integer, spkey.value[1].class)
    assert_equal(cert.public_key.e, spkey.value[1].value)

    extensions = tbs_cert.value[7]
    assert_equal(:CONTEXT_SPECIFIC, extensions.tag_class)
    assert_equal(3, extensions.tag)
    assert_equal(1, extensions.value.size)
    assert_equal(OpenSSL::ASN1::Sequence, extensions.value[0].class)
    assert_equal(3, extensions.value[0].value.size)

    ext = extensions.value[0].value[0]  # basicConstraints
    assert_equal(OpenSSL::ASN1::Sequence, ext.class)
    assert_equal(3, ext.value.size)
    assert_equal(OpenSSL::ASN1::ObjectId, ext.value[0].class)
    assert_equal("2.5.29.19",  ext.value[0].oid)
    assert_equal(OpenSSL::ASN1::Boolean, ext.value[1].class)
    assert_equal(true, ext.value[1].value)
    assert_equal(OpenSSL::ASN1::OctetString, ext.value[2].class)
    extv = OpenSSL::ASN1.decode(ext.value[2].value)
    assert_equal(OpenSSL::ASN1::Sequence, extv.class)
    assert_equal(2, extv.value.size)
    assert_equal(OpenSSL::ASN1::Boolean, extv.value[0].class)
    assert_equal(true, extv.value[0].value)
    assert_equal(OpenSSL::ASN1::Integer, extv.value[1].class)
    assert_equal(1, extv.value[1].value)

    ext = extensions.value[0].value[1]  # keyUsage
    assert_equal(OpenSSL::ASN1::Sequence, ext.class)
    assert_equal(3, ext.value.size)
    assert_equal(OpenSSL::ASN1::ObjectId, ext.value[0].class)
    assert_equal("2.5.29.15",  ext.value[0].oid)
    assert_equal(OpenSSL::ASN1::Boolean, ext.value[1].class)
    assert_equal(true, ext.value[1].value)
    assert_equal(OpenSSL::ASN1::OctetString, ext.value[2].class)
    extv = OpenSSL::ASN1.decode(ext.value[2].value)
    assert_equal(OpenSSL::ASN1::BitString, extv.class)
    str = +"\000"; str[0] = 0b00000110.chr
    assert_equal(str, extv.value)

    ext = extensions.value[0].value[2]  # subjetKeyIdentifier
    assert_equal(OpenSSL::ASN1::Sequence, ext.class)
    assert_equal(2, ext.value.size)
    assert_equal(OpenSSL::ASN1::ObjectId, ext.value[0].class)
    assert_equal("2.5.29.14",  ext.value[0].oid)
    assert_equal(OpenSSL::ASN1::OctetString, ext.value[1].class)
    extv = OpenSSL::ASN1.decode(ext.value[1].value)
    assert_equal(OpenSSL::ASN1::OctetString, extv.class)
    sha1 = OpenSSL::Digest::SHA1.new
    sha1.update(pkey.value[1].value)
    assert_equal(sha1.digest, extv.value)

    assert_equal(OpenSSL::ASN1::Sequence, sig_alg.class)
    assert_equal(2, sig_alg.value.size)
    assert_equal(OpenSSL::ASN1::ObjectId, pkey.value[0].value[0].class)
    assert_equal("1.2.840.113549.1.1.1", pkey.value[0].value[0].oid)
    assert_equal(OpenSSL::ASN1::Null, pkey.value[0].value[1].class)

    assert_equal(OpenSSL::ASN1::BitString, sig_val.class)
    cululated_sig = key.sign(OpenSSL::Digest::SHA1.new, tbs_cert.to_der)
    assert_equal(cululated_sig, sig_val.value)
  end

  def test_decode_all
    raw = B(%w{ 02 01 01 02 01 02 02 01 03 })
    ary = OpenSSL::ASN1.decode_all(raw)
    assert_equal(3, ary.size)
    ary.each_with_index do |asn1, i|
      assert_universal(OpenSSL::ASN1::INTEGER, asn1)
      assert_equal(i + 1, asn1.value)
    end
  end

  def test_object_id_register
    oid = "1.2.34.56789"
    pend "OID 1.2.34.56789 is already registered" if OpenSSL::ASN1::ObjectId(oid).sn
    assert_equal true, OpenSSL::ASN1::ObjectId.register(oid, "ossl-test-sn", "ossl-test-ln")
    obj = OpenSSL::ASN1::ObjectId(oid)
    assert_equal oid, obj.oid
    assert_equal "ossl-test-sn", obj.sn
    assert_equal "ossl-test-ln", obj.ln
    obj = encode_decode_test B(%w{ 06 05 2A 22 83 BB 55 }), OpenSSL::ASN1::ObjectId("ossl-test-ln")
    assert_equal "ossl-test-sn", obj.value
  end

  def test_end_of_content
    encode_decode_test B(%w{ 00 00 }), OpenSSL::ASN1::EndOfContent.new
    assert_raise(OpenSSL::ASN1::ASN1Error) {
      OpenSSL::ASN1.decode(B(%w{ 00 01 00 }))
    }
  end

  def test_boolean
    encode_decode_test B(%w{ 01 01 00 }), OpenSSL::ASN1::Boolean.new(false)
    encode_decode_test B(%w{ 01 01 FF }), OpenSSL::ASN1::Boolean.new(true)
    decode_test B(%w{ 01 01 01 }), OpenSSL::ASN1::Boolean.new(true)
    assert_raise(OpenSSL::ASN1::ASN1Error) {
      OpenSSL::ASN1.decode(B(%w{ 01 02 00 00 }))
    }
  end

  def test_integer
    encode_decode_test B(%w{ 02 01 00 }), OpenSSL::ASN1::Integer.new(0)
    encode_decode_test B(%w{ 02 01 48 }), OpenSSL::ASN1::Integer.new(72)
    encode_decode_test B(%w{ 02 02 00 80 }), OpenSSL::ASN1::Integer.new(128)
    encode_decode_test B(%w{ 02 01 81 }), OpenSSL::ASN1::Integer.new(-127)
    encode_decode_test B(%w{ 02 01 80 }), OpenSSL::ASN1::Integer.new(-128)
    encode_decode_test B(%w{ 02 01 FF }), OpenSSL::ASN1::Integer.new(-1)
    encode_decode_test B(%w{ 02 09 01 00 00 00 00 00 00 00 00 }), OpenSSL::ASN1::Integer.new(2 ** 64)
    encode_decode_test B(%w{ 02 09 FF 00 00 00 00 00 00 00 00 }), OpenSSL::ASN1::Integer.new(-(2 ** 64))
    # FIXME: OpenSSL < 1.1.0 does not fail
    # assert_raise(OpenSSL::ASN1::ASN1Error) {
    #   OpenSSL::ASN1.decode(B(%w{ 02 02 00 7F }))
    # }
    # assert_raise(OpenSSL::ASN1::ASN1Error) {
    #   OpenSSL::ASN1.decode(B(%w{ 02 02 FF 80 }))
    # }
  end

  def test_enumerated
    encode_decode_test B(%w{ 0A 01 00 }), OpenSSL::ASN1::Enumerated.new(0)
    encode_decode_test B(%w{ 0A 01 48 }), OpenSSL::ASN1::Enumerated.new(72)
    encode_decode_test B(%w{ 0A 02 00 80 }), OpenSSL::ASN1::Enumerated.new(128)
    encode_decode_test B(%w{ 0A 09 01 00 00 00 00 00 00 00 00 }), OpenSSL::ASN1::Enumerated.new(2 ** 64)
  end

  def test_bitstring
    encode_decode_test B(%w{ 03 01 00 }), OpenSSL::ASN1::BitString.new(B(%w{}))
    encode_decode_test B(%w{ 03 02 00 01 }), OpenSSL::ASN1::BitString.new(B(%w{ 01 }))
    obj = OpenSSL::ASN1::BitString.new(B(%w{ F0 }))
    obj.unused_bits = 4
    encode_decode_test B(%w{ 03 02 04 F0 }), obj
    assert_raise(OpenSSL::ASN1::ASN1Error) {
      OpenSSL::ASN1.decode(B(%w{ 03 00 }))
    }
    # OpenSSL < OpenSSL_1_0_1k and LibreSSL ignore the error
    # assert_raise(OpenSSL::ASN1::ASN1Error) {
    #   OpenSSL::ASN1.decode(B(%w{ 03 03 08 FF 00 }))
    # }
    # OpenSSL does not seem to prohibit this, though X.690 8.6.2.3 (15/08) does
    # assert_raise(OpenSSL::ASN1::ASN1Error) {
    #   OpenSSL::ASN1.decode(B(%w{ 03 01 04 }))
    # }
    assert_raise(OpenSSL::ASN1::ASN1Error) {
      obj = OpenSSL::ASN1::BitString.new(B(%w{ FF FF }))
      obj.unused_bits = 8
      obj.to_der
    }
  end

  def test_string_basic
    test = -> (tag, klass) {
      encode_decode_test tag.chr + B(%w{ 00 }), klass.new(B(%w{}))
      encode_decode_test tag.chr + B(%w{ 02 00 01 }), klass.new(B(%w{ 00 01 }))
    }
    test.(4, OpenSSL::ASN1::OctetString)
    test.(12, OpenSSL::ASN1::UTF8String)
    test.(18, OpenSSL::ASN1::NumericString)
    test.(19, OpenSSL::ASN1::PrintableString)
    test.(20, OpenSSL::ASN1::T61String)
    test.(21, OpenSSL::ASN1::VideotexString)
    test.(22, OpenSSL::ASN1::IA5String)
    test.(25, OpenSSL::ASN1::GraphicString)
    test.(26, OpenSSL::ASN1::ISO64String)
    test.(27, OpenSSL::ASN1::GeneralString)
    test.(28, OpenSSL::ASN1::UniversalString)
    test.(30, OpenSSL::ASN1::BMPString)
  end

  def test_null
    encode_decode_test B(%w{ 05 00 }), OpenSSL::ASN1::Null.new(nil)
    assert_raise(OpenSSL::ASN1::ASN1Error) {
      OpenSSL::ASN1.decode(B(%w{ 05 01 00 }))
    }
  end

  def test_object_identifier
    encode_decode_test B(%w{ 06 01 00 }), OpenSSL::ASN1::ObjectId.new("0.0".b)
    encode_decode_test B(%w{ 06 01 28 }), OpenSSL::ASN1::ObjectId.new("1.0".b)
    encode_decode_test B(%w{ 06 03 88 37 03 }), OpenSSL::ASN1::ObjectId.new("2.999.3".b)
    encode_decode_test B(%w{ 06 05 2A 22 83 BB 55 }), OpenSSL::ASN1::ObjectId.new("1.2.34.56789".b)
    obj = encode_decode_test B(%w{ 06 09 60 86 48 01 65 03 04 02 01 }), OpenSSL::ASN1::ObjectId.new("sha256")
    assert_equal "2.16.840.1.101.3.4.2.1", obj.oid
    assert_equal "SHA256", obj.sn
    assert_equal "sha256", obj.ln
    assert_raise(OpenSSL::ASN1::ASN1Error) {
      OpenSSL::ASN1.decode(B(%w{ 06 00 }))
    }
    assert_raise(OpenSSL::ASN1::ASN1Error) {
      OpenSSL::ASN1.decode(B(%w{ 06 01 80 }))
    }
    assert_raise(OpenSSL::ASN1::ASN1Error) { OpenSSL::ASN1::ObjectId.new("3.0".b).to_der }
    assert_raise(OpenSSL::ASN1::ASN1Error) { OpenSSL::ASN1::ObjectId.new("0.40".b).to_der }

    begin
      oid = (0...100).to_a.join(".").b
      obj = OpenSSL::ASN1::ObjectId.new(oid)
      assert_equal oid, obj.oid
    rescue OpenSSL::ASN1::ASN1Error
      pend "OBJ_obj2txt() not working (LibreSSL?)" if $!.message =~ /OBJ_obj2txt/
      raise
    end

    aki = [
      OpenSSL::ASN1::ObjectId.new("authorityKeyIdentifier"),
      OpenSSL::ASN1::ObjectId.new("X509v3 Authority Key Identifier"),
      OpenSSL::ASN1::ObjectId.new("2.5.29.35")
    ]

    ski = [
      OpenSSL::ASN1::ObjectId.new("subjectKeyIdentifier"),
      OpenSSL::ASN1::ObjectId.new("X509v3 Subject Key Identifier"),
      OpenSSL::ASN1::ObjectId.new("2.5.29.14")
    ]

    aki.each do |a|
      aki.each do |b|
        assert a == b
      end

      ski.each do |b|
        refute a == b
      end
    end

    assert_raise(TypeError) {
      OpenSSL::ASN1::ObjectId.new("authorityKeyIdentifier") == nil
    }
  end

  def test_sequence
    encode_decode_test B(%w{ 30 00 }), OpenSSL::ASN1::Sequence.new([])
    encode_decode_test B(%w{ 30 07 05 00 30 00 04 01 00 }), OpenSSL::ASN1::Sequence.new([
      OpenSSL::ASN1::Null.new(nil),
      OpenSSL::ASN1::Sequence.new([]),
      OpenSSL::ASN1::OctetString.new(B(%w{ 00 }))
    ])

    expected = OpenSSL::ASN1::Sequence.new([OpenSSL::ASN1::OctetString.new(B(%w{ 00 }))])
    expected.indefinite_length = true
    encode_decode_test B(%w{ 30 80 04 01 00 00 00 }), expected

    # OpenSSL::ASN1::EndOfContent can only be at the end
    obj = OpenSSL::ASN1::Sequence.new([
      OpenSSL::ASN1::EndOfContent.new,
      OpenSSL::ASN1::OctetString.new(B(%w{ 00 })),
      OpenSSL::ASN1::EndOfContent.new,
    ])
    obj.indefinite_length = true
    assert_raise(OpenSSL::ASN1::ASN1Error) { obj.to_der }

    # The last EOC in value is ignored if indefinite length form is used
    expected = OpenSSL::ASN1::Sequence.new([
      OpenSSL::ASN1::OctetString.new(B(%w{ 00 })),
      OpenSSL::ASN1::EndOfContent.new
    ])
    expected.indefinite_length = true
    encode_test B(%w{ 30 80 04 01 00 00 00 }), expected
  end

  def test_set
    encode_decode_test B(%w{ 31 00 }), OpenSSL::ASN1::Set.new([])
    encode_decode_test B(%w{ 31 07 05 00 30 00 04 01 00 }), OpenSSL::ASN1::Set.new([
      OpenSSL::ASN1::Null.new(nil),
      OpenSSL::ASN1::Sequence.new([]),
      OpenSSL::ASN1::OctetString.new(B(%w{ 00 }))
    ])
    expected = OpenSSL::ASN1::Set.new([OpenSSL::ASN1::OctetString.new(B(%w{ 00 }))])
    expected.indefinite_length = true
    encode_decode_test B(%w{ 31 80 04 01 00 00 00 }), expected
  end

  def test_utctime
    encode_decode_test B(%w{ 17 0D }) + "160908234339Z".b,
      OpenSSL::ASN1::UTCTime.new(Time.utc(2016, 9, 8, 23, 43, 39))
    # Seconds is omitted
    decode_test B(%w{ 17 0B }) + "1609082343Z".b,
      OpenSSL::ASN1::UTCTime.new(Time.utc(2016, 9, 8, 23, 43, 0))
    begin
      # possible range of UTCTime is 1969-2068 currently
      encode_decode_test B(%w{ 17 0D }) + "690908234339Z".b,
        OpenSSL::ASN1::UTCTime.new(Time.utc(1969, 9, 8, 23, 43, 39))
    rescue OpenSSL::ASN1::ASN1Error
      pend "No negative time_t support?"
    end
    # not implemented
    # decode_test B(%w{ 17 11 }) + "500908234339+0930".b,
    #   OpenSSL::ASN1::UTCTime.new(Time.new(1950, 9, 8, 23, 43, 39, "+09:30"))
    # decode_test B(%w{ 17 0F }) + "5009082343-0930".b,
    #   OpenSSL::ASN1::UTCTime.new(Time.new(1950, 9, 8, 23, 43, 0, "-09:30"))
    # assert_raise(OpenSSL::ASN1::ASN1Error) {
    #   OpenSSL::ASN1.decode(B(%w{ 17 0C }) + "500908234339".b)
    # }
    # assert_raise(OpenSSL::ASN1::ASN1Error) {
    #   OpenSSL::ASN1.decode(B(%w{ 17 0D }) + "500908234339Y".b)
    # }
  end

  def test_generalizedtime
    encode_decode_test B(%w{ 18 0F }) + "20161208193429Z".b,
      OpenSSL::ASN1::GeneralizedTime.new(Time.utc(2016, 12, 8, 19, 34, 29))
    encode_decode_test B(%w{ 18 0F }) + "99990908234339Z".b,
      OpenSSL::ASN1::GeneralizedTime.new(Time.utc(9999, 9, 8, 23, 43, 39))
    decode_test B(%w{ 18 0D }) + "201612081934Z".b,
      OpenSSL::ASN1::GeneralizedTime.new(Time.utc(2016, 12, 8, 19, 34, 0))
    # not implemented
    # decode_test B(%w{ 18 13 }) + "20161208193439+0930".b,
    #   OpenSSL::ASN1::GeneralizedTime.new(Time.new(2016, 12, 8, 19, 34, 39, "+09:30"))
    # decode_test B(%w{ 18 11 }) + "201612081934-0930".b,
    #   OpenSSL::ASN1::GeneralizedTime.new(Time.new(2016, 12, 8, 19, 34, 0, "-09:30"))
    # decode_test B(%w{ 18 11 }) + "201612081934-09".b,
    #   OpenSSL::ASN1::GeneralizedTime.new(Time.new(2016, 12, 8, 19, 34, 0, "-09:00"))
    # decode_test B(%w{ 18 0D }) + "2016120819.5Z".b,
    #   OpenSSL::ASN1::GeneralizedTime.new(Time.utc(2016, 12, 8, 19, 30, 0))
    # decode_test B(%w{ 18 0D }) + "2016120819,5Z".b,
    #   OpenSSL::ASN1::GeneralizedTime.new(Time.utc(2016, 12, 8, 19, 30, 0))
    # decode_test B(%w{ 18 0F }) + "201612081934.5Z".b,
    #   OpenSSL::ASN1::GeneralizedTime.new(Time.utc(2016, 12, 8, 19, 34, 30))
    # decode_test B(%w{ 18 11 }) + "20161208193439.5Z".b,
    #   OpenSSL::ASN1::GeneralizedTime.new(Time.utc(2016, 12, 8, 19, 34, 39.5))
    # assert_raise(OpenSSL::ASN1::ASN1Error) {
    #   OpenSSL::ASN1.decode(B(%w{ 18 0D }) + "201612081934Y".b)
    # }
  end

  def test_basic_asn1data
    encode_test B(%w{ 00 00 }), OpenSSL::ASN1::ASN1Data.new(B(%w{}), 0, :UNIVERSAL)
    encode_test B(%w{ 01 00 }), OpenSSL::ASN1::ASN1Data.new(B(%w{}), 1, :UNIVERSAL)
    encode_decode_test B(%w{ 41 00 }), OpenSSL::ASN1::ASN1Data.new(B(%w{}), 1, :APPLICATION)
    encode_decode_test B(%w{ 81 00 }), OpenSSL::ASN1::ASN1Data.new(B(%w{}), 1, :CONTEXT_SPECIFIC)
    encode_decode_test B(%w{ C1 00 }), OpenSSL::ASN1::ASN1Data.new(B(%w{}), 1, :PRIVATE)
    encode_decode_test B(%w{ 1F 20 00 }), OpenSSL::ASN1::ASN1Data.new(B(%w{}), 32, :UNIVERSAL)
    encode_decode_test B(%w{ 1F C0 20 00 }), OpenSSL::ASN1::ASN1Data.new(B(%w{}), 8224, :UNIVERSAL)
    encode_decode_test B(%w{ 41 02 AB CD }), OpenSSL::ASN1::ASN1Data.new(B(%w{ AB CD }), 1, :APPLICATION)
    encode_decode_test B(%w{ 41 81 80 } + %w{ AB CD } * 64), OpenSSL::ASN1::ASN1Data.new(B(%w{ AB CD } * 64), 1, :APPLICATION)
    encode_decode_test B(%w{ 41 82 01 00 } + %w{ AB CD } * 128), OpenSSL::ASN1::ASN1Data.new(B(%w{ AB CD } * 128), 1, :APPLICATION)
    encode_decode_test B(%w{ 61 00 }), OpenSSL::ASN1::ASN1Data.new([], 1, :APPLICATION)
    obj = OpenSSL::ASN1::ASN1Data.new([OpenSSL::ASN1::ASN1Data.new(B(%w{ AB CD }), 2, :PRIVATE)], 1, :APPLICATION)
    obj.indefinite_length = true
    encode_decode_test B(%w{ 61 80 C2 02 AB CD 00 00 }), obj
    obj = OpenSSL::ASN1::ASN1Data.new([
      OpenSSL::ASN1::ASN1Data.new(B(%w{ AB CD }), 2, :PRIVATE),
      OpenSSL::ASN1::EndOfContent.new
    ], 1, :APPLICATION)
    obj.indefinite_length = true
    encode_test B(%w{ 61 80 C2 02 AB CD 00 00 }), obj
    obj = OpenSSL::ASN1::ASN1Data.new(B(%w{ AB CD }), 1, :UNIVERSAL)
    obj.indefinite_length = true
    assert_raise(OpenSSL::ASN1::ASN1Error) { obj.to_der }
  end

  def test_basic_primitive
    encode_test B(%w{ 00 00 }), OpenSSL::ASN1::Primitive.new(B(%w{}), 0)
    encode_test B(%w{ 01 00 }), OpenSSL::ASN1::Primitive.new(B(%w{}), 1, nil, :UNIVERSAL)
    encode_test B(%w{ 81 00 }), OpenSSL::ASN1::Primitive.new(B(%w{}), 1, nil, :CONTEXT_SPECIFIC)
    encode_test B(%w{ 01 02 AB CD }), OpenSSL::ASN1::Primitive.new(B(%w{ AB CD }), 1)
    assert_raise(TypeError) { OpenSSL::ASN1::Primitive.new([], 1).to_der }

    prim = OpenSSL::ASN1::Integer.new(50)
    assert_equal false, prim.indefinite_length
    assert_not_respond_to prim, :indefinite_length=
  end

  def test_basic_constructed
    octet_string = OpenSSL::ASN1::OctetString.new(B(%w{ AB CD }))
    encode_test B(%w{ 20 00 }), OpenSSL::ASN1::Constructive.new([], 0)
    encode_test B(%w{ 21 00 }), OpenSSL::ASN1::Constructive.new([], 1, nil, :UNIVERSAL)
    encode_test B(%w{ A1 00 }), OpenSSL::ASN1::Constructive.new([], 1, nil, :CONTEXT_SPECIFIC)
    encode_test B(%w{ 21 04 04 02 AB CD }), OpenSSL::ASN1::Constructive.new([octet_string], 1)
    obj = OpenSSL::ASN1::Constructive.new([octet_string], 1)
    obj.indefinite_length = true
    encode_decode_test B(%w{ 21 80 04 02 AB CD 00 00 }), obj
    obj = OpenSSL::ASN1::Constructive.new([octet_string, OpenSSL::ASN1::EndOfContent.new], 1)
    obj.indefinite_length = true
    encode_test B(%w{ 21 80 04 02 AB CD 00 00 }), obj
  end

  def test_prim_explicit_tagging
    oct_str = OpenSSL::ASN1::OctetString.new("a", 0, :EXPLICIT)
    encode_test B(%w{ A0 03 04 01 61 }), oct_str
    oct_str2 = OpenSSL::ASN1::OctetString.new("a", 1, :EXPLICIT, :APPLICATION)
    encode_test B(%w{ 61 03 04 01 61 }), oct_str2

    decoded = OpenSSL::ASN1.decode(oct_str2.to_der)
    assert_equal :APPLICATION, decoded.tag_class
    assert_equal 1, decoded.tag
    assert_equal 1, decoded.value.size
    inner = decoded.value[0]
    assert_equal OpenSSL::ASN1::OctetString, inner.class
    assert_equal B(%w{ 61 }), inner.value
  end

  def test_prim_implicit_tagging
    int = OpenSSL::ASN1::Integer.new(1, 0, :IMPLICIT)
    encode_test B(%w{ 80 01 01 }), int
    int2 = OpenSSL::ASN1::Integer.new(1, 1, :IMPLICIT, :APPLICATION)
    encode_test B(%w{ 41 01 01 }), int2
    decoded = OpenSSL::ASN1.decode(int2.to_der)
    assert_equal :APPLICATION, decoded.tag_class
    assert_equal 1, decoded.tag
    assert_equal B(%w{ 01 }), decoded.value

    # Special behavior: Encoding universal types with non-default 'tag'
    # attribute and nil tagging method.
    int3 = OpenSSL::ASN1::Integer.new(1, 1)
    encode_test B(%w{ 01 01 01 }), int3
  end

  def test_cons_explicit_tagging
    content = [ OpenSSL::ASN1::PrintableString.new('abc') ]
    seq = OpenSSL::ASN1::Sequence.new(content, 2, :EXPLICIT)
    encode_test B(%w{ A2 07 30 05 13 03 61 62 63 }), seq
    seq2 = OpenSSL::ASN1::Sequence.new(content, 3, :EXPLICIT, :APPLICATION)
    encode_test B(%w{ 63 07 30 05 13 03 61 62 63 }), seq2

    content3 = [ OpenSSL::ASN1::PrintableString.new('abc'),
                 OpenSSL::ASN1::EndOfContent.new() ]
    seq3 = OpenSSL::ASN1::Sequence.new(content3, 2, :EXPLICIT)
    seq3.indefinite_length = true
    encode_test B(%w{ A2 80 30 80 13 03 61 62 63 00 00 00 00 }), seq3
  end

  def test_cons_implicit_tagging
    content = [ OpenSSL::ASN1::Null.new(nil) ]
    seq = OpenSSL::ASN1::Sequence.new(content, 1, :IMPLICIT)
    encode_test B(%w{ A1 02 05 00 }), seq
    seq2 = OpenSSL::ASN1::Sequence.new(content, 1, :IMPLICIT, :APPLICATION)
    encode_test B(%w{ 61 02 05 00 }), seq2

    content3 = [ OpenSSL::ASN1::Null.new(nil),
                 OpenSSL::ASN1::EndOfContent.new() ]
    seq3 = OpenSSL::ASN1::Sequence.new(content3, 1, :IMPLICIT)
    seq3.indefinite_length = true
    encode_test B(%w{ A1 80 05 00 00 00 }), seq3

    # Special behavior: Encoding universal types with non-default 'tag'
    # attribute and nil tagging method.
    seq4 = OpenSSL::ASN1::Sequence.new([], 1)
    encode_test B(%w{ 21 00 }), seq4
  end

  def test_octet_string_constructed_tagging
    octets = [ OpenSSL::ASN1::OctetString.new('aaa') ]
    cons = OpenSSL::ASN1::Constructive.new(octets, 0, :IMPLICIT)
    encode_test B(%w{ A0 05 04 03 61 61 61 }), cons

    octets = [ OpenSSL::ASN1::OctetString.new('aaa'),
               OpenSSL::ASN1::EndOfContent.new() ]
    cons = OpenSSL::ASN1::Constructive.new(octets, 0, :IMPLICIT)
    cons.indefinite_length = true
    encode_test B(%w{ A0 80 04 03 61 61 61 00 00 }), cons
  end

  def test_recursive_octet_string_indefinite_length
    octets_sub1 = [ OpenSSL::ASN1::OctetString.new("\x01"),
                    OpenSSL::ASN1::EndOfContent.new() ]
    octets_sub2 = [ OpenSSL::ASN1::OctetString.new("\x02"),
                    OpenSSL::ASN1::EndOfContent.new() ]
    container1 = OpenSSL::ASN1::Constructive.new(octets_sub1, OpenSSL::ASN1::OCTET_STRING, nil, :UNIVERSAL)
    container1.indefinite_length = true
    container2 = OpenSSL::ASN1::Constructive.new(octets_sub2, OpenSSL::ASN1::OCTET_STRING, nil, :UNIVERSAL)
    container2.indefinite_length = true
    octets3 = OpenSSL::ASN1::OctetString.new("\x03")

    octets = [ container1, container2, octets3,
               OpenSSL::ASN1::EndOfContent.new() ]
    cons = OpenSSL::ASN1::Constructive.new(octets, OpenSSL::ASN1::OCTET_STRING, nil, :UNIVERSAL)
    cons.indefinite_length = true
    raw = B(%w{ 24 80 24 80 04 01 01 00 00 24 80 04 01 02 00 00 04 01 03 00 00 })
    assert_equal(raw, cons.to_der)
    assert_equal(raw, OpenSSL::ASN1.decode(raw).to_der)
  end

  def test_recursive_octet_string_parse
    raw = B(%w{ 24 80 24 80 04 01 01 00 00 24 80 04 01 02 00 00 04 01 03 00 00 })
    asn1 = OpenSSL::ASN1.decode(raw)
    assert_equal(OpenSSL::ASN1::Constructive, asn1.class)
    assert_universal(OpenSSL::ASN1::OCTET_STRING, asn1)
    assert_equal(true, asn1.indefinite_length)
    assert_equal(3, asn1.value.size)
    nested1 = asn1.value[0]
    assert_equal(OpenSSL::ASN1::Constructive, nested1.class)
    assert_universal(OpenSSL::ASN1::OCTET_STRING, nested1)
    assert_equal(true, nested1.indefinite_length)
    assert_equal(1, nested1.value.size)
    oct1 = nested1.value[0]
    assert_universal(OpenSSL::ASN1::OCTET_STRING, oct1)
    assert_equal(false, oct1.indefinite_length)
    nested2 = asn1.value[1]
    assert_equal(OpenSSL::ASN1::Constructive, nested2.class)
    assert_universal(OpenSSL::ASN1::OCTET_STRING, nested2)
    assert_equal(true, nested2.indefinite_length)
    assert_equal(1, nested2.value.size)
    oct2 = nested2.value[0]
    assert_universal(OpenSSL::ASN1::OCTET_STRING, oct2)
    assert_equal(false, oct2.indefinite_length)
    oct3 = asn1.value[2]
    assert_universal(OpenSSL::ASN1::OCTET_STRING, oct3)
    assert_equal(false, oct3.indefinite_length)
  end

  def test_decode_constructed_overread
    test = %w{ 31 06 31 02 30 02 05 00 }
    #                          ^ <- invalid
    raw = [test.join].pack("H*")
    ret = []
    assert_raise(OpenSSL::ASN1::ASN1Error) {
      OpenSSL::ASN1.traverse(raw) { |x| ret << x }
    }
    assert_equal 2, ret.size
    assert_equal 17, ret[0][6]
    assert_equal 17, ret[1][6]

    test = %w{ 31 80 30 03 00 00 }
    #                    ^ <- invalid
    raw = [test.join].pack("H*")
    ret = []
    assert_raise(OpenSSL::ASN1::ASN1Error) {
      OpenSSL::ASN1.traverse(raw) { |x| ret << x }
    }
    assert_equal 1, ret.size
    assert_equal 17, ret[0][6]
  end

  def test_constructive_each
    data = [OpenSSL::ASN1::Integer.new(0), OpenSSL::ASN1::Integer.new(1)]
    seq = OpenSSL::ASN1::Sequence.new data

    assert_equal data, seq.entries
  end

  # Very time consuming test.
  # def test_gc_stress
  #   assert_ruby_status(['--disable-gems', '-eGC.stress=true', '-erequire "openssl.so"'])
  # end

  private

  def B(ary)
    [ary.join].pack("H*")
  end

  def assert_asn1_equal(a, b)
    assert_equal a.class, b.class
    assert_equal a.tag, b.tag
    assert_equal a.tag_class, b.tag_class
    assert_equal a.indefinite_length, b.indefinite_length
    assert_equal a.unused_bits, b.unused_bits if a.respond_to?(:unused_bits)
    case a.value
    when Array
      a.value.each_with_index { |ai, i|
        assert_asn1_equal ai, b.value[i]
      }
    else
      if OpenSSL::ASN1::ObjectId === a
        assert_equal a.oid, b.oid
      else
        assert_equal a.value, b.value
      end
    end
    assert_equal a.to_der, b.to_der
  end

  def encode_test(der, obj)
    assert_equal der, obj.to_der
  end

  def decode_test(der, obj)
    decoded = OpenSSL::ASN1.decode(der)
    assert_asn1_equal obj, decoded
    decoded
  end

  def encode_decode_test(der, obj)
    encode_test(der, obj)
    decode_test(der, obj)
  end

  def assert_universal(tag, asn1)
    assert_equal(tag, asn1.tag)
    if asn1.respond_to?(:tagging)
      assert_nil(asn1.tagging)
    end
    assert_equal(:UNIVERSAL, asn1.tag_class)
  end
end

end