/
ssl3con.c
13160 lines (11669 loc) · 449 KB
/
ssl3con.c
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
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* SSL3 Protocol
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* TODO(ekr): Implement HelloVerifyRequest on server side. OK for now. */
#include "cert.h"
#include "ssl.h"
#include "cryptohi.h" /* for DSAU_ stuff */
#include "keyhi.h"
#include "secder.h"
#include "secitem.h"
#include "sechash.h"
#include "sslimpl.h"
#include "sslproto.h"
#include "sslerr.h"
#include "ssl3ext.h"
#include "ssl3exthandle.h"
#include "prtime.h"
#include "prinrval.h"
#include "prerror.h"
#include "pratom.h"
#include "prthread.h"
#include "nss.h"
#include "nssoptions.h"
#include "pk11func.h"
#include "secmod.h"
#include "blapi.h"
#include <stdio.h>
static PK11SymKey *ssl3_GenerateRSAPMS(sslSocket *ss, ssl3CipherSpec *spec,
PK11SlotInfo *serverKeySlot);
static SECStatus ssl3_ComputeMasterSecret(sslSocket *ss, PK11SymKey *pms,
PK11SymKey **msp);
static SECStatus ssl3_DeriveConnectionKeys(sslSocket *ss,
PK11SymKey *masterSecret);
static SECStatus ssl3_HandshakeFailure(sslSocket *ss);
static SECStatus ssl3_SendCertificate(sslSocket *ss);
static SECStatus ssl3_SendCertificateRequest(sslSocket *ss);
static SECStatus ssl3_SendNextProto(sslSocket *ss);
static SECStatus ssl3_SendFinished(sslSocket *ss, PRInt32 flags);
static SECStatus ssl3_SendServerHelloDone(sslSocket *ss);
static SECStatus ssl3_SendServerKeyExchange(sslSocket *ss);
static SECStatus ssl3_HandleClientHelloPart2(sslSocket *ss,
SECItem *suites,
sslSessionID *sid,
const PRUint8 *msg,
unsigned int len);
static SECStatus ssl3_HandleServerHelloPart2(sslSocket *ss,
const SECItem *sidBytes,
int *retErrCode);
static SECStatus ssl3_HandlePostHelloHandshakeMessage(sslSocket *ss,
PRUint8 *b,
PRUint32 length);
static SECStatus ssl3_FlushHandshakeMessages(sslSocket *ss, PRInt32 flags);
static CK_MECHANISM_TYPE ssl3_GetHashMechanismByHashType(SSLHashType hashType);
static CK_MECHANISM_TYPE ssl3_GetMgfMechanismByHashType(SSLHashType hash);
PRBool ssl_IsRsaPssSignatureScheme(SSLSignatureScheme scheme);
const PRUint8 ssl_hello_retry_random[] = {
0xCF, 0x21, 0xAD, 0x74, 0xE5, 0x9A, 0x61, 0x11,
0xBE, 0x1D, 0x8C, 0x02, 0x1E, 0x65, 0xB8, 0x91,
0xC2, 0xA2, 0x11, 0x16, 0x7A, 0xBB, 0x8C, 0x5E,
0x07, 0x9E, 0x09, 0xE2, 0xC8, 0xA8, 0x33, 0x9C
};
PR_STATIC_ASSERT(PR_ARRAY_SIZE(ssl_hello_retry_random) == SSL3_RANDOM_LENGTH);
/* This list of SSL3 cipher suites is sorted in descending order of
* precedence (desirability). It only includes cipher suites we implement.
* This table is modified by SSL3_SetPolicy(). The ordering of cipher suites
* in this table must match the ordering in SSL_ImplementedCiphers (sslenum.c)
*
* Important: See bug 946147 before enabling, reordering, or adding any cipher
* suites to this list.
*/
/* clang-format off */
static ssl3CipherSuiteCfg cipherSuites[ssl_V3_SUITES_IMPLEMENTED] = {
/* cipher_suite policy enabled isPresent */
/* Special TLS 1.3 suites. */
{ TLS_AES_128_GCM_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE },
{ TLS_CHACHA20_POLY1305_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE },
{ TLS_AES_256_GCM_SHA384, SSL_ALLOWED, PR_TRUE, PR_FALSE },
{ TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, SSL_ALLOWED, PR_FALSE, PR_FALSE},
/* TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA is out of order to work around
* bug 946147.
*/
{ TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_RC4_128_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256,SSL_ALLOWED,PR_TRUE, PR_FALSE},
{ TLS_DHE_DSS_WITH_AES_128_GCM_SHA256, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_DSS_WITH_AES_256_GCM_SHA384, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_RSA_WITH_AES_128_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_DHE_DSS_WITH_AES_128_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_DHE_DSS_WITH_AES_128_CBC_SHA256, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_RSA_WITH_AES_256_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_DHE_DSS_WITH_AES_256_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_DHE_RSA_WITH_AES_256_CBC_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_DHE_DSS_WITH_AES_256_CBC_SHA256, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_DHE_DSS_WITH_RC4_128_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_RSA_WITH_AES_256_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_ECDSA_WITH_RC4_128_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_RSA_WITH_RC4_128_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
/* RSA */
{ TLS_RSA_WITH_AES_128_GCM_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_RSA_WITH_AES_256_GCM_SHA384, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_RSA_WITH_AES_128_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_RSA_WITH_AES_128_CBC_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_RSA_WITH_CAMELLIA_128_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_RSA_WITH_AES_256_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_RSA_WITH_AES_256_CBC_SHA256, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_RSA_WITH_CAMELLIA_256_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_RSA_WITH_SEED_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_RSA_WITH_3DES_EDE_CBC_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_RSA_WITH_RC4_128_SHA, SSL_ALLOWED, PR_TRUE, PR_FALSE},
{ TLS_RSA_WITH_RC4_128_MD5, SSL_ALLOWED, PR_TRUE, PR_FALSE},
/* 56-bit DES "domestic" cipher suites */
{ TLS_DHE_RSA_WITH_DES_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_DHE_DSS_WITH_DES_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_RSA_WITH_DES_CBC_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
/* ciphersuites with no encryption */
{ TLS_ECDHE_ECDSA_WITH_NULL_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDHE_RSA_WITH_NULL_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_RSA_WITH_NULL_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_ECDH_ECDSA_WITH_NULL_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_RSA_WITH_NULL_SHA, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_RSA_WITH_NULL_SHA256, SSL_ALLOWED, PR_FALSE, PR_FALSE},
{ TLS_RSA_WITH_NULL_MD5, SSL_ALLOWED, PR_FALSE, PR_FALSE},
};
/* clang-format on */
/* This is the default supported set of signature schemes. The order of the
* hashes here is all that is important, since that will (sometimes) determine
* which hash we use. The key pair (i.e., cert) is the primary thing that
* determines what we use and this doesn't affect how we select key pairs. The
* order of signature types is based on the same rules for ordering we use for
* cipher suites just for consistency.
*/
static const SSLSignatureScheme defaultSignatureSchemes[] = {
ssl_sig_ecdsa_secp256r1_sha256,
ssl_sig_ecdsa_secp384r1_sha384,
ssl_sig_ecdsa_secp521r1_sha512,
ssl_sig_ecdsa_sha1,
ssl_sig_rsa_pss_rsae_sha256,
ssl_sig_rsa_pss_rsae_sha384,
ssl_sig_rsa_pss_rsae_sha512,
ssl_sig_rsa_pkcs1_sha256,
ssl_sig_rsa_pkcs1_sha384,
ssl_sig_rsa_pkcs1_sha512,
ssl_sig_rsa_pkcs1_sha1,
ssl_sig_dsa_sha256,
ssl_sig_dsa_sha384,
ssl_sig_dsa_sha512,
ssl_sig_dsa_sha1
};
PR_STATIC_ASSERT(PR_ARRAY_SIZE(defaultSignatureSchemes) <=
MAX_SIGNATURE_SCHEMES);
/* Verify that SSL_ImplementedCiphers and cipherSuites are in consistent order.
*/
#ifdef DEBUG
void
ssl3_CheckCipherSuiteOrderConsistency()
{
unsigned int i;
PORT_Assert(SSL_NumImplementedCiphers == PR_ARRAY_SIZE(cipherSuites));
for (i = 0; i < PR_ARRAY_SIZE(cipherSuites); ++i) {
PORT_Assert(SSL_ImplementedCiphers[i] == cipherSuites[i].cipher_suite);
}
}
#endif
static const /*SSL3ClientCertificateType */ PRUint8 certificate_types[] = {
ct_RSA_sign,
ct_ECDSA_sign,
ct_DSS_sign,
};
static SSL3Statistics ssl3stats;
static const ssl3KEADef kea_defs[] =
{
/* indexed by SSL3KeyExchangeAlgorithm */
/* kea exchKeyType signKeyType authKeyType ephemeral oid */
{ kea_null, ssl_kea_null, nullKey, ssl_auth_null, PR_FALSE, 0 },
{ kea_rsa, ssl_kea_rsa, nullKey, ssl_auth_rsa_decrypt, PR_FALSE, SEC_OID_TLS_RSA },
{ kea_dh_dss, ssl_kea_dh, dsaKey, ssl_auth_dsa, PR_FALSE, SEC_OID_TLS_DH_DSS },
{ kea_dh_rsa, ssl_kea_dh, rsaKey, ssl_auth_rsa_sign, PR_FALSE, SEC_OID_TLS_DH_RSA },
{ kea_dhe_dss, ssl_kea_dh, dsaKey, ssl_auth_dsa, PR_TRUE, SEC_OID_TLS_DHE_DSS },
{ kea_dhe_rsa, ssl_kea_dh, rsaKey, ssl_auth_rsa_sign, PR_TRUE, SEC_OID_TLS_DHE_RSA },
{ kea_dh_anon, ssl_kea_dh, nullKey, ssl_auth_null, PR_TRUE, SEC_OID_TLS_DH_ANON },
{ kea_ecdh_ecdsa, ssl_kea_ecdh, nullKey, ssl_auth_ecdh_ecdsa, PR_FALSE, SEC_OID_TLS_ECDH_ECDSA },
{ kea_ecdhe_ecdsa, ssl_kea_ecdh, ecKey, ssl_auth_ecdsa, PR_TRUE, SEC_OID_TLS_ECDHE_ECDSA },
{ kea_ecdh_rsa, ssl_kea_ecdh, nullKey, ssl_auth_ecdh_rsa, PR_FALSE, SEC_OID_TLS_ECDH_RSA },
{ kea_ecdhe_rsa, ssl_kea_ecdh, rsaKey, ssl_auth_rsa_sign, PR_TRUE, SEC_OID_TLS_ECDHE_RSA },
{ kea_ecdh_anon, ssl_kea_ecdh, nullKey, ssl_auth_null, PR_TRUE, SEC_OID_TLS_ECDH_ANON },
{ kea_ecdhe_psk, ssl_kea_ecdh_psk, nullKey, ssl_auth_psk, PR_TRUE, SEC_OID_TLS_ECDHE_PSK },
{ kea_dhe_psk, ssl_kea_dh_psk, nullKey, ssl_auth_psk, PR_TRUE, SEC_OID_TLS_DHE_PSK },
{ kea_tls13_any, ssl_kea_tls13_any, nullKey, ssl_auth_tls13_any, PR_TRUE, SEC_OID_TLS13_KEA_ANY },
};
/* must use ssl_LookupCipherSuiteDef to access */
static const ssl3CipherSuiteDef cipher_suite_defs[] =
{
/* cipher_suite bulk_cipher_alg mac_alg key_exchange_alg prf_hash */
/* Note that the prf_hash_alg is the hash function used by the PRF, see sslimpl.h. */
{ TLS_NULL_WITH_NULL_NULL, cipher_null, ssl_mac_null, kea_null, ssl_hash_none },
{ TLS_RSA_WITH_NULL_MD5, cipher_null, ssl_mac_md5, kea_rsa, ssl_hash_none },
{ TLS_RSA_WITH_NULL_SHA, cipher_null, ssl_mac_sha, kea_rsa, ssl_hash_none },
{ TLS_RSA_WITH_NULL_SHA256, cipher_null, ssl_hmac_sha256, kea_rsa, ssl_hash_sha256 },
{ TLS_RSA_WITH_RC4_128_MD5, cipher_rc4, ssl_mac_md5, kea_rsa, ssl_hash_none },
{ TLS_RSA_WITH_RC4_128_SHA, cipher_rc4, ssl_mac_sha, kea_rsa, ssl_hash_none },
{ TLS_RSA_WITH_DES_CBC_SHA, cipher_des, ssl_mac_sha, kea_rsa, ssl_hash_none },
{ TLS_RSA_WITH_3DES_EDE_CBC_SHA, cipher_3des, ssl_mac_sha, kea_rsa, ssl_hash_none },
{ TLS_DHE_DSS_WITH_DES_CBC_SHA, cipher_des, ssl_mac_sha, kea_dhe_dss, ssl_hash_none },
{ TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA,
cipher_3des, ssl_mac_sha, kea_dhe_dss, ssl_hash_none },
{ TLS_DHE_DSS_WITH_RC4_128_SHA, cipher_rc4, ssl_mac_sha, kea_dhe_dss, ssl_hash_none },
{ TLS_DHE_RSA_WITH_DES_CBC_SHA, cipher_des, ssl_mac_sha, kea_dhe_rsa, ssl_hash_none },
{ TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA,
cipher_3des, ssl_mac_sha, kea_dhe_rsa, ssl_hash_none },
/* New TLS cipher suites */
{ TLS_RSA_WITH_AES_128_CBC_SHA, cipher_aes_128, ssl_mac_sha, kea_rsa, ssl_hash_none },
{ TLS_RSA_WITH_AES_128_CBC_SHA256, cipher_aes_128, ssl_hmac_sha256, kea_rsa, ssl_hash_sha256 },
{ TLS_DHE_DSS_WITH_AES_128_CBC_SHA, cipher_aes_128, ssl_mac_sha, kea_dhe_dss, ssl_hash_none },
{ TLS_DHE_RSA_WITH_AES_128_CBC_SHA, cipher_aes_128, ssl_mac_sha, kea_dhe_rsa, ssl_hash_none },
{ TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, cipher_aes_128, ssl_hmac_sha256, kea_dhe_rsa, ssl_hash_sha256 },
{ TLS_RSA_WITH_AES_256_CBC_SHA, cipher_aes_256, ssl_mac_sha, kea_rsa, ssl_hash_none },
{ TLS_RSA_WITH_AES_256_CBC_SHA256, cipher_aes_256, ssl_hmac_sha256, kea_rsa, ssl_hash_sha256 },
{ TLS_DHE_DSS_WITH_AES_256_CBC_SHA, cipher_aes_256, ssl_mac_sha, kea_dhe_dss, ssl_hash_none },
{ TLS_DHE_RSA_WITH_AES_256_CBC_SHA, cipher_aes_256, ssl_mac_sha, kea_dhe_rsa, ssl_hash_none },
{ TLS_DHE_RSA_WITH_AES_256_CBC_SHA256, cipher_aes_256, ssl_hmac_sha256, kea_dhe_rsa, ssl_hash_sha256 },
{ TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, cipher_aes_256_gcm, ssl_mac_aead, kea_dhe_rsa, ssl_hash_sha384 },
{ TLS_RSA_WITH_SEED_CBC_SHA, cipher_seed, ssl_mac_sha, kea_rsa, ssl_hash_none },
{ TLS_RSA_WITH_CAMELLIA_128_CBC_SHA, cipher_camellia_128, ssl_mac_sha, kea_rsa, ssl_hash_none },
{ TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA,
cipher_camellia_128, ssl_mac_sha, kea_dhe_dss, ssl_hash_none },
{ TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA,
cipher_camellia_128, ssl_mac_sha, kea_dhe_rsa, ssl_hash_none },
{ TLS_RSA_WITH_CAMELLIA_256_CBC_SHA, cipher_camellia_256, ssl_mac_sha, kea_rsa, ssl_hash_none },
{ TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA,
cipher_camellia_256, ssl_mac_sha, kea_dhe_dss, ssl_hash_none },
{ TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA,
cipher_camellia_256, ssl_mac_sha, kea_dhe_rsa, ssl_hash_none },
{ TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, cipher_aes_128_gcm, ssl_mac_aead, kea_dhe_rsa, ssl_hash_sha256 },
{ TLS_RSA_WITH_AES_128_GCM_SHA256, cipher_aes_128_gcm, ssl_mac_aead, kea_rsa, ssl_hash_sha256 },
{ TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, cipher_aes_128_gcm, ssl_mac_aead, kea_ecdhe_rsa, ssl_hash_sha256 },
{ TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, cipher_aes_128_gcm, ssl_mac_aead, kea_ecdhe_ecdsa, ssl_hash_sha256 },
{ TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, cipher_aes_256_gcm, ssl_mac_aead, kea_ecdhe_ecdsa, ssl_hash_sha384 },
{ TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, cipher_aes_256_gcm, ssl_mac_aead, kea_ecdhe_rsa, ssl_hash_sha384 },
{ TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, cipher_aes_256, ssl_hmac_sha384, kea_ecdhe_ecdsa, ssl_hash_sha384 },
{ TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, cipher_aes_256, ssl_hmac_sha384, kea_ecdhe_rsa, ssl_hash_sha384 },
{ TLS_DHE_DSS_WITH_AES_128_GCM_SHA256, cipher_aes_128_gcm, ssl_mac_aead, kea_dhe_dss, ssl_hash_sha256 },
{ TLS_DHE_DSS_WITH_AES_128_CBC_SHA256, cipher_aes_128, ssl_hmac_sha256, kea_dhe_dss, ssl_hash_sha256 },
{ TLS_DHE_DSS_WITH_AES_256_CBC_SHA256, cipher_aes_256, ssl_hmac_sha256, kea_dhe_dss, ssl_hash_sha256 },
{ TLS_DHE_DSS_WITH_AES_256_GCM_SHA384, cipher_aes_256_gcm, ssl_mac_aead, kea_dhe_dss, ssl_hash_sha384 },
{ TLS_RSA_WITH_AES_256_GCM_SHA384, cipher_aes_256_gcm, ssl_mac_aead, kea_rsa, ssl_hash_sha384 },
{ TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256, cipher_chacha20, ssl_mac_aead, kea_dhe_rsa, ssl_hash_sha256 },
{ TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, cipher_chacha20, ssl_mac_aead, kea_ecdhe_rsa, ssl_hash_sha256 },
{ TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, cipher_chacha20, ssl_mac_aead, kea_ecdhe_ecdsa, ssl_hash_sha256 },
{ TLS_ECDH_ECDSA_WITH_NULL_SHA, cipher_null, ssl_mac_sha, kea_ecdh_ecdsa, ssl_hash_none },
{ TLS_ECDH_ECDSA_WITH_RC4_128_SHA, cipher_rc4, ssl_mac_sha, kea_ecdh_ecdsa, ssl_hash_none },
{ TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA, cipher_3des, ssl_mac_sha, kea_ecdh_ecdsa, ssl_hash_none },
{ TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, cipher_aes_128, ssl_mac_sha, kea_ecdh_ecdsa, ssl_hash_none },
{ TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA, cipher_aes_256, ssl_mac_sha, kea_ecdh_ecdsa, ssl_hash_none },
{ TLS_ECDHE_ECDSA_WITH_NULL_SHA, cipher_null, ssl_mac_sha, kea_ecdhe_ecdsa, ssl_hash_none },
{ TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, cipher_rc4, ssl_mac_sha, kea_ecdhe_ecdsa, ssl_hash_none },
{ TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA, cipher_3des, ssl_mac_sha, kea_ecdhe_ecdsa, ssl_hash_none },
{ TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, cipher_aes_128, ssl_mac_sha, kea_ecdhe_ecdsa, ssl_hash_none },
{ TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, cipher_aes_128, ssl_hmac_sha256, kea_ecdhe_ecdsa, ssl_hash_sha256 },
{ TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, cipher_aes_256, ssl_mac_sha, kea_ecdhe_ecdsa, ssl_hash_none },
{ TLS_ECDH_RSA_WITH_NULL_SHA, cipher_null, ssl_mac_sha, kea_ecdh_rsa, ssl_hash_none },
{ TLS_ECDH_RSA_WITH_RC4_128_SHA, cipher_rc4, ssl_mac_sha, kea_ecdh_rsa, ssl_hash_none },
{ TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA, cipher_3des, ssl_mac_sha, kea_ecdh_rsa, ssl_hash_none },
{ TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, cipher_aes_128, ssl_mac_sha, kea_ecdh_rsa, ssl_hash_none },
{ TLS_ECDH_RSA_WITH_AES_256_CBC_SHA, cipher_aes_256, ssl_mac_sha, kea_ecdh_rsa, ssl_hash_none },
{ TLS_ECDHE_RSA_WITH_NULL_SHA, cipher_null, ssl_mac_sha, kea_ecdhe_rsa, ssl_hash_none },
{ TLS_ECDHE_RSA_WITH_RC4_128_SHA, cipher_rc4, ssl_mac_sha, kea_ecdhe_rsa, ssl_hash_none },
{ TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, cipher_3des, ssl_mac_sha, kea_ecdhe_rsa, ssl_hash_none },
{ TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, cipher_aes_128, ssl_mac_sha, kea_ecdhe_rsa, ssl_hash_none },
{ TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, cipher_aes_128, ssl_hmac_sha256, kea_ecdhe_rsa, ssl_hash_sha256 },
{ TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, cipher_aes_256, ssl_mac_sha, kea_ecdhe_rsa, ssl_hash_none },
{ TLS_AES_128_GCM_SHA256, cipher_aes_128_gcm, ssl_mac_aead, kea_tls13_any, ssl_hash_sha256 },
{ TLS_CHACHA20_POLY1305_SHA256, cipher_chacha20, ssl_mac_aead, kea_tls13_any, ssl_hash_sha256 },
{ TLS_AES_256_GCM_SHA384, cipher_aes_256_gcm, ssl_mac_aead, kea_tls13_any, ssl_hash_sha384 },
};
static const CK_MECHANISM_TYPE auth_alg_defs[] = {
CKM_INVALID_MECHANISM, /* ssl_auth_null */
CKM_RSA_PKCS, /* ssl_auth_rsa_decrypt */
CKM_DSA, /* ? _SHA1 */ /* ssl_auth_dsa */
CKM_INVALID_MECHANISM, /* ssl_auth_kea (unused) */
CKM_ECDSA, /* ssl_auth_ecdsa */
CKM_ECDH1_DERIVE, /* ssl_auth_ecdh_rsa */
CKM_ECDH1_DERIVE, /* ssl_auth_ecdh_ecdsa */
CKM_RSA_PKCS, /* ssl_auth_rsa_sign */
CKM_RSA_PKCS_PSS, /* ssl_auth_rsa_pss */
CKM_NSS_HKDF_SHA256, /* ssl_auth_psk (just check for HKDF) */
CKM_INVALID_MECHANISM /* ssl_auth_tls13_any */
};
PR_STATIC_ASSERT(PR_ARRAY_SIZE(auth_alg_defs) == ssl_auth_size);
static const CK_MECHANISM_TYPE kea_alg_defs[] = {
CKM_INVALID_MECHANISM, /* ssl_kea_null */
CKM_RSA_PKCS, /* ssl_kea_rsa */
CKM_DH_PKCS_DERIVE, /* ssl_kea_dh */
CKM_INVALID_MECHANISM, /* ssl_kea_fortezza (unused) */
CKM_ECDH1_DERIVE, /* ssl_kea_ecdh */
CKM_ECDH1_DERIVE, /* ssl_kea_ecdh_psk */
CKM_DH_PKCS_DERIVE, /* ssl_kea_dh_psk */
CKM_INVALID_MECHANISM, /* ssl_kea_tls13_any */
};
PR_STATIC_ASSERT(PR_ARRAY_SIZE(kea_alg_defs) == ssl_kea_size);
typedef struct SSLCipher2MechStr {
SSLCipherAlgorithm calg;
CK_MECHANISM_TYPE cmech;
} SSLCipher2Mech;
/* indexed by type SSLCipherAlgorithm */
static const SSLCipher2Mech alg2Mech[] = {
/* calg, cmech */
{ ssl_calg_null, CKM_INVALID_MECHANISM },
{ ssl_calg_rc4, CKM_RC4 },
{ ssl_calg_rc2, CKM_RC2_CBC },
{ ssl_calg_des, CKM_DES_CBC },
{ ssl_calg_3des, CKM_DES3_CBC },
{ ssl_calg_idea, CKM_IDEA_CBC },
{ ssl_calg_fortezza, CKM_SKIPJACK_CBC64 },
{ ssl_calg_aes, CKM_AES_CBC },
{ ssl_calg_camellia, CKM_CAMELLIA_CBC },
{ ssl_calg_seed, CKM_SEED_CBC },
{ ssl_calg_aes_gcm, CKM_AES_GCM },
{ ssl_calg_chacha20, CKM_NSS_CHACHA20_POLY1305 },
};
const PRUint8 tls13_downgrade_random[] = { 0x44, 0x4F, 0x57, 0x4E,
0x47, 0x52, 0x44, 0x01 };
const PRUint8 tls12_downgrade_random[] = { 0x44, 0x4F, 0x57, 0x4E,
0x47, 0x52, 0x44, 0x00 };
PR_STATIC_ASSERT(sizeof(tls13_downgrade_random) ==
sizeof(tls13_downgrade_random));
/* The ECCWrappedKeyInfo structure defines how various pieces of
* information are laid out within wrappedSymmetricWrappingkey
* for ECDH key exchange. Since wrappedSymmetricWrappingkey is
* a 512-byte buffer (see sslimpl.h), the variable length field
* in ECCWrappedKeyInfo can be at most (512 - 8) = 504 bytes.
*
* XXX For now, NSS only supports named elliptic curves of size 571 bits
* or smaller. The public value will fit within 145 bytes and EC params
* will fit within 12 bytes. We'll need to revisit this when NSS
* supports arbitrary curves.
*/
#define MAX_EC_WRAPPED_KEY_BUFLEN 504
typedef struct ECCWrappedKeyInfoStr {
PRUint16 size; /* EC public key size in bits */
PRUint16 encodedParamLen; /* length (in bytes) of DER encoded EC params */
PRUint16 pubValueLen; /* length (in bytes) of EC public value */
PRUint16 wrappedKeyLen; /* length (in bytes) of the wrapped key */
PRUint8 var[MAX_EC_WRAPPED_KEY_BUFLEN]; /* this buffer contains the */
/* EC public-key params, the EC public value and the wrapped key */
} ECCWrappedKeyInfo;
CK_MECHANISM_TYPE
ssl3_Alg2Mech(SSLCipherAlgorithm calg)
{
PORT_Assert(alg2Mech[calg].calg == calg);
return alg2Mech[calg].cmech;
}
#if defined(TRACE)
static char *
ssl3_DecodeHandshakeType(int msgType)
{
char *rv;
static char line[40];
switch (msgType) {
case ssl_hs_hello_request:
rv = "hello_request (0)";
break;
case ssl_hs_client_hello:
rv = "client_hello (1)";
break;
case ssl_hs_server_hello:
rv = "server_hello (2)";
break;
case ssl_hs_hello_verify_request:
rv = "hello_verify_request (3)";
break;
case ssl_hs_new_session_ticket:
rv = "new_session_ticket (4)";
break;
case ssl_hs_end_of_early_data:
rv = "end_of_early_data (5)";
break;
case ssl_hs_hello_retry_request:
rv = "hello_retry_request (6)";
break;
case ssl_hs_encrypted_extensions:
rv = "encrypted_extensions (8)";
break;
case ssl_hs_certificate:
rv = "certificate (11)";
break;
case ssl_hs_server_key_exchange:
rv = "server_key_exchange (12)";
break;
case ssl_hs_certificate_request:
rv = "certificate_request (13)";
break;
case ssl_hs_server_hello_done:
rv = "server_hello_done (14)";
break;
case ssl_hs_certificate_verify:
rv = "certificate_verify (15)";
break;
case ssl_hs_client_key_exchange:
rv = "client_key_exchange (16)";
break;
case ssl_hs_finished:
rv = "finished (20)";
break;
case ssl_hs_certificate_status:
rv = "certificate_status (22)";
break;
case ssl_hs_key_update:
rv = "key_update (24)";
break;
default:
sprintf(line, "*UNKNOWN* handshake type! (%d)", msgType);
rv = line;
}
return rv;
}
static char *
ssl3_DecodeContentType(int msgType)
{
char *rv;
static char line[40];
switch (msgType) {
case ssl_ct_change_cipher_spec:
rv = "change_cipher_spec (20)";
break;
case ssl_ct_alert:
rv = "alert (21)";
break;
case ssl_ct_handshake:
rv = "handshake (22)";
break;
case ssl_ct_application_data:
rv = "application_data (23)";
break;
case ssl_ct_ack:
rv = "ack (25)";
break;
default:
sprintf(line, "*UNKNOWN* record type! (%d)", msgType);
rv = line;
}
return rv;
}
#endif
SSL3Statistics *
SSL_GetStatistics(void)
{
return &ssl3stats;
}
typedef struct tooLongStr {
#if defined(IS_LITTLE_ENDIAN)
PRInt32 low;
PRInt32 high;
#else
PRInt32 high;
PRInt32 low;
#endif
} tooLong;
void
SSL_AtomicIncrementLong(long *x)
{
if ((sizeof *x) == sizeof(PRInt32)) {
PR_ATOMIC_INCREMENT((PRInt32 *)x);
} else {
tooLong *tl = (tooLong *)x;
if (PR_ATOMIC_INCREMENT(&tl->low) == 0)
PR_ATOMIC_INCREMENT(&tl->high);
}
}
static PRBool
ssl3_CipherSuiteAllowedForVersionRange(
ssl3CipherSuite cipherSuite,
const SSLVersionRange *vrange)
{
switch (cipherSuite) {
case TLS_DHE_RSA_WITH_AES_256_CBC_SHA256:
case TLS_RSA_WITH_AES_256_CBC_SHA256:
case TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256:
case TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384:
case TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256:
case TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384:
case TLS_DHE_RSA_WITH_AES_128_CBC_SHA256:
case TLS_RSA_WITH_AES_128_CBC_SHA256:
case TLS_RSA_WITH_AES_128_GCM_SHA256:
case TLS_RSA_WITH_AES_256_GCM_SHA384:
case TLS_DHE_DSS_WITH_AES_128_CBC_SHA256:
case TLS_DHE_DSS_WITH_AES_256_CBC_SHA256:
case TLS_RSA_WITH_NULL_SHA256:
case TLS_DHE_DSS_WITH_AES_128_GCM_SHA256:
case TLS_DHE_DSS_WITH_AES_256_GCM_SHA384:
case TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256:
case TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384:
case TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:
case TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384:
case TLS_DHE_RSA_WITH_AES_128_GCM_SHA256:
case TLS_DHE_RSA_WITH_AES_256_GCM_SHA384:
case TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256:
case TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256:
case TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256:
return vrange->max >= SSL_LIBRARY_VERSION_TLS_1_2 &&
vrange->min < SSL_LIBRARY_VERSION_TLS_1_3;
/* RFC 4492: ECC cipher suites need TLS extensions to negotiate curves and
* point formats.*/
case TLS_ECDH_ECDSA_WITH_NULL_SHA:
case TLS_ECDH_ECDSA_WITH_RC4_128_SHA:
case TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA:
case TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA:
case TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA:
case TLS_ECDHE_ECDSA_WITH_NULL_SHA:
case TLS_ECDHE_ECDSA_WITH_RC4_128_SHA:
case TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA:
case TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA:
case TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA:
case TLS_ECDH_RSA_WITH_NULL_SHA:
case TLS_ECDH_RSA_WITH_RC4_128_SHA:
case TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA:
case TLS_ECDH_RSA_WITH_AES_128_CBC_SHA:
case TLS_ECDH_RSA_WITH_AES_256_CBC_SHA:
case TLS_ECDHE_RSA_WITH_NULL_SHA:
case TLS_ECDHE_RSA_WITH_RC4_128_SHA:
case TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA:
case TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA:
case TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA:
return vrange->max >= SSL_LIBRARY_VERSION_TLS_1_0 &&
vrange->min < SSL_LIBRARY_VERSION_TLS_1_3;
case TLS_AES_128_GCM_SHA256:
case TLS_AES_256_GCM_SHA384:
case TLS_CHACHA20_POLY1305_SHA256:
return vrange->max >= SSL_LIBRARY_VERSION_TLS_1_3;
default:
return vrange->min < SSL_LIBRARY_VERSION_TLS_1_3;
}
}
/* return pointer to ssl3CipherSuiteDef for suite, or NULL */
/* XXX This does a linear search. A binary search would be better. */
const ssl3CipherSuiteDef *
ssl_LookupCipherSuiteDef(ssl3CipherSuite suite)
{
int cipher_suite_def_len =
sizeof(cipher_suite_defs) / sizeof(cipher_suite_defs[0]);
int i;
for (i = 0; i < cipher_suite_def_len; i++) {
if (cipher_suite_defs[i].cipher_suite == suite)
return &cipher_suite_defs[i];
}
PORT_Assert(PR_FALSE); /* We should never get here. */
PORT_SetError(SSL_ERROR_UNKNOWN_CIPHER_SUITE);
return NULL;
}
/* Find the cipher configuration struct associate with suite */
/* XXX This does a linear search. A binary search would be better. */
static ssl3CipherSuiteCfg *
ssl_LookupCipherSuiteCfgMutable(ssl3CipherSuite suite,
ssl3CipherSuiteCfg *suites)
{
int i;
for (i = 0; i < ssl_V3_SUITES_IMPLEMENTED; i++) {
if (suites[i].cipher_suite == suite)
return &suites[i];
}
/* return NULL and let the caller handle it. */
PORT_SetError(SSL_ERROR_UNKNOWN_CIPHER_SUITE);
return NULL;
}
const ssl3CipherSuiteCfg *
ssl_LookupCipherSuiteCfg(ssl3CipherSuite suite, const ssl3CipherSuiteCfg *suites)
{
return ssl_LookupCipherSuiteCfgMutable(suite,
CONST_CAST(ssl3CipherSuiteCfg, suites));
}
static PRBool
ssl_NamedGroupTypeEnabled(const sslSocket *ss, SSLKEAType keaType)
{
unsigned int i;
for (i = 0; i < SSL_NAMED_GROUP_COUNT; ++i) {
if (ss->namedGroupPreferences[i] &&
ss->namedGroupPreferences[i]->keaType == keaType) {
return PR_TRUE;
}
}
return PR_FALSE;
}
static PRBool
ssl_KEAEnabled(const sslSocket *ss, SSLKEAType keaType)
{
switch (keaType) {
case ssl_kea_rsa:
return PR_TRUE;
case ssl_kea_dh:
case ssl_kea_dh_psk: {
if (ss->sec.isServer && !ss->opt.enableServerDhe) {
return PR_FALSE;
}
if (ss->sec.isServer) {
/* If the server requires named FFDHE groups, then the client
* must have included an FFDHE group. peerSupportsFfdheGroups
* is set to true in ssl_HandleSupportedGroupsXtn(). */
if (ss->opt.requireDHENamedGroups &&
!ss->xtnData.peerSupportsFfdheGroups) {
return PR_FALSE;
}
/* We can use the weak DH group if all of these are true:
* 1. We don't require named groups.
* 2. The peer doesn't support named groups.
* 3. This isn't TLS 1.3.
* 4. The weak group is enabled. */
if (!ss->opt.requireDHENamedGroups &&
!ss->xtnData.peerSupportsFfdheGroups &&
ss->version < SSL_LIBRARY_VERSION_TLS_1_3 &&
ss->ssl3.dheWeakGroupEnabled) {
return PR_TRUE;
}
} else {
if (ss->version < SSL_LIBRARY_VERSION_TLS_1_3 &&
!ss->opt.requireDHENamedGroups) {
/* The client enables DHE cipher suites even if no DHE groups
* are enabled. Only if this isn't TLS 1.3 and named groups
* are not required. */
return PR_TRUE;
}
}
return ssl_NamedGroupTypeEnabled(ss, ssl_kea_dh);
}
case ssl_kea_ecdh:
case ssl_kea_ecdh_psk:
return ssl_NamedGroupTypeEnabled(ss, ssl_kea_ecdh);
case ssl_kea_tls13_any:
return PR_TRUE;
case ssl_kea_fortezza:
default:
PORT_Assert(0);
}
return PR_FALSE;
}
static PRBool
ssl_HasCert(const sslSocket *ss, SSLAuthType authType)
{
PRCList *cursor;
if (authType == ssl_auth_null || authType == ssl_auth_psk || authType == ssl_auth_tls13_any) {
return PR_TRUE;
}
for (cursor = PR_NEXT_LINK(&ss->serverCerts);
cursor != &ss->serverCerts;
cursor = PR_NEXT_LINK(cursor)) {
sslServerCert *cert = (sslServerCert *)cursor;
if (!cert->serverKeyPair ||
!cert->serverKeyPair->privKey ||
!cert->serverCertChain ||
!SSL_CERT_IS(cert, authType)) {
continue;
}
/* When called from ssl3_config_match_init(), all the EC curves will be
* enabled, so this will essentially do nothing (unless we implement
* curve configuration). However, once we have seen the
* supported_groups extension and this is called from config_match(),
* this will filter out certificates with an unsupported curve. */
if ((authType == ssl_auth_ecdsa ||
authType == ssl_auth_ecdh_ecdsa ||
authType == ssl_auth_ecdh_rsa) &&
!ssl_NamedGroupEnabled(ss, cert->namedCurve)) {
continue;
}
return PR_TRUE;
}
if (authType == ssl_auth_rsa_sign) {
return ssl_HasCert(ss, ssl_auth_rsa_pss);
}
return PR_FALSE;
}
/* Initialize the suite->isPresent value for config_match
* Returns count of enabled ciphers supported by extant tokens,
* regardless of policy or user preference.
* If this returns zero, the user cannot do SSL v3.
*/
unsigned int
ssl3_config_match_init(sslSocket *ss)
{
ssl3CipherSuiteCfg *suite;
const ssl3CipherSuiteDef *cipher_def;
SSLCipherAlgorithm cipher_alg;
CK_MECHANISM_TYPE cipher_mech;
SSLAuthType authType;
SSLKEAType keaType;
unsigned int i;
unsigned int numPresent = 0;
unsigned int numEnabled = 0;
PORT_Assert(ss);
if (!ss) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return 0;
}
if (SSL_ALL_VERSIONS_DISABLED(&ss->vrange)) {
return 0;
}
ssl_FilterSupportedGroups(ss);
for (i = 0; i < ssl_V3_SUITES_IMPLEMENTED; i++) {
suite = &ss->cipherSuites[i];
if (suite->enabled) {
++numEnabled;
/* We need the cipher defs to see if we have a token that can handle
* this cipher. It isn't part of the static definition.
*/
cipher_def = ssl_LookupCipherSuiteDef(suite->cipher_suite);
if (!cipher_def) {
suite->isPresent = PR_FALSE;
continue;
}
cipher_alg = ssl_GetBulkCipherDef(cipher_def)->calg;
cipher_mech = ssl3_Alg2Mech(cipher_alg);
/* Mark the suites that are backed by real tokens, certs and keys */
suite->isPresent = PR_TRUE;
authType = kea_defs[cipher_def->key_exchange_alg].authKeyType;
if (authType != ssl_auth_null && authType != ssl_auth_tls13_any) {
if (ss->sec.isServer && !ssl_HasCert(ss, authType)) {
suite->isPresent = PR_FALSE;
}
if (!PK11_TokenExists(auth_alg_defs[authType])) {
suite->isPresent = PR_FALSE;
}
}
keaType = kea_defs[cipher_def->key_exchange_alg].exchKeyType;
if (keaType != ssl_kea_null &&
keaType != ssl_kea_tls13_any &&
!PK11_TokenExists(kea_alg_defs[keaType])) {
suite->isPresent = PR_FALSE;
}
if (cipher_alg != ssl_calg_null &&
!PK11_TokenExists(cipher_mech)) {
suite->isPresent = PR_FALSE;
}
if (suite->isPresent) {
++numPresent;
}
}
}
PORT_Assert(numPresent > 0 || numEnabled == 0);
if (numPresent == 0) {
PORT_SetError(SSL_ERROR_NO_CIPHERS_SUPPORTED);
}
return numPresent;
}
/* Return PR_TRUE if suite is usable. This if the suite is permitted by policy,
* enabled, has a certificate (as needed), has a viable key agreement method, is
* usable with the negotiated TLS version, and is otherwise usable. */
PRBool
ssl3_config_match(const ssl3CipherSuiteCfg *suite, PRUint8 policy,
const SSLVersionRange *vrange, const sslSocket *ss)
{
const ssl3CipherSuiteDef *cipher_def;
const ssl3KEADef *kea_def;
PORT_Assert(policy != SSL_NOT_ALLOWED);
if (policy == SSL_NOT_ALLOWED)
return PR_FALSE;
if (!suite->enabled || !suite->isPresent)
return PR_FALSE;
if ((suite->policy == SSL_NOT_ALLOWED) ||
(suite->policy > policy))
return PR_FALSE;
PORT_Assert(ss != NULL);
cipher_def = ssl_LookupCipherSuiteDef(suite->cipher_suite);
PORT_Assert(cipher_def != NULL);
kea_def = &kea_defs[cipher_def->key_exchange_alg];
PORT_Assert(kea_def != NULL);
if (!ssl_KEAEnabled(ss, kea_def->exchKeyType)) {
return PR_FALSE;
}
if (ss->sec.isServer && !ssl_HasCert(ss, kea_def->authKeyType)) {
return PR_FALSE;
}
return ssl3_CipherSuiteAllowedForVersionRange(suite->cipher_suite, vrange);
}
/* Return the number of cipher suites that are usable. */
/* called from ssl3_SendClientHello */
static unsigned int
count_cipher_suites(sslSocket *ss, PRUint8 policy)
{
unsigned int i, count = 0;
if (SSL_ALL_VERSIONS_DISABLED(&ss->vrange)) {
return 0;
}
for (i = 0; i < ssl_V3_SUITES_IMPLEMENTED; i++) {
if (ssl3_config_match(&ss->cipherSuites[i], policy, &ss->vrange, ss))
count++;
}
if (count == 0) {
PORT_SetError(SSL_ERROR_SSL_DISABLED);
}
return count;
}
/*
* Null compression, mac and encryption functions
*/
SECStatus
Null_Cipher(void *ctx, unsigned char *output, int *outputLen, int maxOutputLen,
const unsigned char *input, int inputLen)
{
if (inputLen > maxOutputLen) {
*outputLen = 0; /* Match PK11_CipherOp in setting outputLen */
PORT_SetError(SEC_ERROR_OUTPUT_LEN);
return SECFailure;
}
*outputLen = inputLen;
if (inputLen > 0 && input != output) {
PORT_Memcpy(output, input, inputLen);
}
return SECSuccess;
}
/*
* SSL3 Utility functions
*/
static void
ssl_SetSpecVersions(sslSocket *ss, ssl3CipherSpec *spec)
{
spec->version = ss->version;
if (ss->version >= SSL_LIBRARY_VERSION_TLS_1_3) {
tls13_SetSpecRecordVersion(ss, spec);
} else if (IS_DTLS(ss)) {
spec->recordVersion = dtls_TLSVersionToDTLSVersion(ss->version);
} else {
spec->recordVersion = ss->version;
}
}
/* allowLargerPeerVersion controls whether the function will select the
* highest enabled SSL version or fail when peerVersion is greater than the
* highest enabled version.
*
* If allowLargerPeerVersion is true, peerVersion is the peer's highest
* enabled version rather than the peer's selected version.
*/
SECStatus
ssl3_NegotiateVersion(sslSocket *ss, SSL3ProtocolVersion peerVersion,
PRBool allowLargerPeerVersion)
{
SSL3ProtocolVersion negotiated;
if (SSL_ALL_VERSIONS_DISABLED(&ss->vrange)) {
PORT_SetError(SSL_ERROR_SSL_DISABLED);
return SECFailure;
}
if (peerVersion < ss->vrange.min ||
(peerVersion > ss->vrange.max && !allowLargerPeerVersion)) {
PORT_SetError(SSL_ERROR_UNSUPPORTED_VERSION);
return SECFailure;
}
negotiated = PR_MIN(peerVersion, ss->vrange.max);
PORT_Assert(ssl3_VersionIsSupported(ss->protocolVariant, negotiated));
if (ss->firstHsDone && ss->version != negotiated) {
PORT_SetError(SSL_ERROR_UNSUPPORTED_VERSION);
return SECFailure;
}
ss->version = negotiated;
return SECSuccess;
}
/* Used by the client when the server produces a version number.
* This reads, validates, and normalizes the value. */
SECStatus
ssl_ClientReadVersion(sslSocket *ss, PRUint8 **b, unsigned int *len,
SSL3ProtocolVersion *version)
{
SSL3ProtocolVersion v;
PRUint32 temp;
SECStatus rv;
rv = ssl3_ConsumeHandshakeNumber(ss, &temp, 2, b, len);
if (rv != SECSuccess) {
return SECFailure; /* alert has been sent */
}
v = (SSL3ProtocolVersion)temp;
if (IS_DTLS(ss)) {
v = dtls_DTLSVersionToTLSVersion(v);
/* Check for failure. */