-
Notifications
You must be signed in to change notification settings - Fork 18
/
Copy pathKconfig
1520 lines (1229 loc) · 41 KB
/
Kconfig
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
# SPDX-License-Identifier: GPL-2.0
#
# Generic algorithms support
#
config XOR_BLOCKS
tristate
#
# async_tx api: hardware offloaded memory transfer/transform support
#
source "crypto/async_tx/Kconfig"
#
# Cryptographic API Configuration
#
menuconfig CRYPTO
tristate "Cryptographic API"
select CRYPTO_LIB_UTILS
help
This option provides the core Cryptographic API.
if CRYPTO
menu "Crypto core or helper"
config CRYPTO_FIPS
bool "FIPS 200 compliance"
depends on (CRYPTO_ANSI_CPRNG || CRYPTO_DRBG) && !CRYPTO_MANAGER_DISABLE_TESTS
depends on (MODULE_SIG || !MODULES)
help
This option enables the fips boot option which is
required if you want the system to operate in a FIPS 200
certification. You should say no unless you know what
this is.
config CRYPTO_FIPS_NAME
string "FIPS Module Name"
default "Linux Kernel Cryptographic API"
depends on CRYPTO_FIPS
help
This option sets the FIPS Module name reported by the Crypto API via
the /proc/sys/crypto/fips_name file.
config CRYPTO_FIPS_CUSTOM_VERSION
bool "Use Custom FIPS Module Version"
depends on CRYPTO_FIPS
default n
config CRYPTO_FIPS_VERSION
string "FIPS Module Version"
default "(none)"
depends on CRYPTO_FIPS_CUSTOM_VERSION
help
This option provides the ability to override the FIPS Module Version.
By default the KERNELRELEASE value is used.
config CRYPTO_FIPS140_MOD
tristate "Enable FIPS 140 cryptographic module"
depends on ARM64
depends on m
select CRYPTO_FIPS140_MERGE_MOD_SECTIONS
help
This option enables building a loadable module fips140.ko, which
contains various crypto algorithms that are also built into vmlinux.
At load time, this module overrides the built-in implementations of
these algorithms with its implementations. It also runs self-tests on
these algorithms and verifies the integrity of its code and data. If
either of these steps fails, the kernel will panic.
This module is intended to be loaded at early boot time in order to
meet FIPS 140 and NIAP FPT_TST_EXT.1 requirements. It shouldn't be
used if you don't need to meet these requirements.
config CRYPTO_FIPS140_MOD_EVAL_TESTING
bool "Enable evaluation testing features in FIPS 140 module"
depends on CRYPTO_FIPS140_MOD
help
This option adds some features to the FIPS 140 module which are needed
for lab evaluation testing of the module, e.g. support for injecting
errors and support for a userspace interface to some of the module's
services. This option should not be enabled in production builds.
config CRYPTO_FIPS140_MERGE_MOD_SECTIONS
bool
help
This option causes the module linker script to place the delimeters
of the text and rodata sections at the appropriate places so that
the FIPS 140 integrity check can be performed. This option is required
by the Crypto FIPS 140 module, and can be enabled by other FIPS 140
modules using the same logic to perform the self integrity check.
config CRYPTO_FIPS140_MOD_DEBUG_INTEGRITY_CHECK
bool "Debug the integrity check in FIPS 140 module"
depends on CRYPTO_FIPS140_MOD
help
This option makes the FIPS 140 module provide debugfs files containing
the text and rodata that were used for the integrity check, i.e. the
runtime text and rodata with relocations and code patches unapplied.
This option also makes the module load even if the integrity check
fails so that these files can be used to debug the failure. (A
possible failure mode is that the kernel has added a new type of code
patching and the module needs to be updated to disable or unapply it.)
This option must not be enabled in production builds.
Example commands for debugging an integrity check failure:
adb root
adb shell mount debugfs -t debugfs /sys/kernel/debug
adb shell cp /sys/kernel/debug/fips140/{text,rodata} /data/local/tmp/
adb pull /data/local/tmp/text text.checked
adb pull /data/local/tmp/rodata rodata.checked
llvm-objcopy -O binary --only-section=.text fips140.ko text.orig
llvm-objcopy -O binary --only-section=.rodata fips140.ko rodata.orig
for f in {text,rodata}.{orig,checked}; do xxd -g1 $f > $f.xxd; done
vimdiff text.{orig,checked}.xxd
vimdiff rodata.{orig,checked}.xxd
config CRYPTO_ALGAPI
tristate
select CRYPTO_ALGAPI2
help
This option provides the API for cryptographic algorithms.
config CRYPTO_ALGAPI2
tristate
config CRYPTO_AEAD
tristate
select CRYPTO_AEAD2
select CRYPTO_ALGAPI
config CRYPTO_AEAD2
tristate
select CRYPTO_ALGAPI2
config CRYPTO_SIG
tristate
select CRYPTO_SIG2
select CRYPTO_ALGAPI
config CRYPTO_SIG2
tristate
select CRYPTO_ALGAPI2
config CRYPTO_SKCIPHER
tristate
select CRYPTO_SKCIPHER2
select CRYPTO_ALGAPI
config CRYPTO_SKCIPHER2
tristate
select CRYPTO_ALGAPI2
config CRYPTO_HASH
tristate
select CRYPTO_HASH2
select CRYPTO_ALGAPI
config CRYPTO_HASH2
tristate
select CRYPTO_ALGAPI2
config CRYPTO_RNG
tristate
select CRYPTO_RNG2
select CRYPTO_ALGAPI
config CRYPTO_RNG2
tristate
select CRYPTO_ALGAPI2
config CRYPTO_RNG_DEFAULT
tristate
select CRYPTO_DRBG_MENU
config CRYPTO_AKCIPHER2
tristate
select CRYPTO_ALGAPI2
config CRYPTO_AKCIPHER
tristate
select CRYPTO_AKCIPHER2
select CRYPTO_ALGAPI
config CRYPTO_KPP2
tristate
select CRYPTO_ALGAPI2
config CRYPTO_KPP
tristate
select CRYPTO_ALGAPI
select CRYPTO_KPP2
config CRYPTO_ACOMP2
tristate
select CRYPTO_ALGAPI2
select SGL_ALLOC
config CRYPTO_ACOMP
tristate
select CRYPTO_ALGAPI
select CRYPTO_ACOMP2
config CRYPTO_MANAGER
tristate "Cryptographic algorithm manager"
select CRYPTO_MANAGER2
help
Create default cryptographic template instantiations such as
cbc(aes).
config CRYPTO_MANAGER2
def_tristate CRYPTO_MANAGER || (CRYPTO_MANAGER!=n && CRYPTO_ALGAPI=y)
select CRYPTO_ACOMP2
select CRYPTO_AEAD2
select CRYPTO_AKCIPHER2
select CRYPTO_SIG2
select CRYPTO_HASH2
select CRYPTO_KPP2
select CRYPTO_RNG2
select CRYPTO_SKCIPHER2
config CRYPTO_USER
tristate "Userspace cryptographic algorithm configuration"
depends on NET
select CRYPTO_MANAGER
help
Userspace configuration for cryptographic instantiations such as
cbc(aes).
config CRYPTO_MANAGER_DISABLE_TESTS
bool "Disable run-time self tests"
default y
help
Disable run-time self tests that normally take place at
algorithm registration.
config CRYPTO_MANAGER_EXTRA_TESTS
bool "Enable extra run-time crypto self tests"
depends on DEBUG_KERNEL && !CRYPTO_MANAGER_DISABLE_TESTS && CRYPTO_MANAGER
help
Enable extra run-time self tests of registered crypto algorithms,
including randomized fuzz tests.
This is intended for developer use only, as these tests take much
longer to run than the normal self tests.
config CRYPTO_NULL
tristate "Null algorithms"
select CRYPTO_NULL2
help
These are 'Null' algorithms, used by IPsec, which do nothing.
config CRYPTO_NULL2
tristate
select CRYPTO_ALGAPI2
select CRYPTO_SKCIPHER2
select CRYPTO_HASH2
config CRYPTO_PCRYPT
tristate "Parallel crypto engine"
depends on SMP
select PADATA
select CRYPTO_MANAGER
select CRYPTO_AEAD
help
This converts an arbitrary crypto algorithm into a parallel
algorithm that executes in kernel threads.
config CRYPTO_CRYPTD
tristate "Software async crypto daemon"
select CRYPTO_SKCIPHER
select CRYPTO_HASH
select CRYPTO_MANAGER
help
This is a generic software asynchronous crypto daemon that
converts an arbitrary synchronous software crypto algorithm
into an asynchronous algorithm that executes in a kernel thread.
config CRYPTO_AUTHENC
tristate "Authenc support"
select CRYPTO_AEAD
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
select CRYPTO_HASH
select CRYPTO_NULL
help
Authenc: Combined mode wrapper for IPsec.
This is required for IPSec ESP (XFRM_ESP).
config CRYPTO_TEST
tristate "Testing module"
depends on m || EXPERT
select CRYPTO_MANAGER
help
Quick & dirty crypto test module.
config CRYPTO_SIMD
tristate
select CRYPTO_CRYPTD
config CRYPTO_ENGINE
tristate
endmenu
menu "Public-key cryptography"
config CRYPTO_RSA
tristate "RSA (Rivest-Shamir-Adleman)"
select CRYPTO_AKCIPHER
select CRYPTO_MANAGER
select MPILIB
select ASN1
help
RSA (Rivest-Shamir-Adleman) public key algorithm (RFC8017)
config CRYPTO_DH
tristate "DH (Diffie-Hellman)"
select CRYPTO_KPP
select MPILIB
help
DH (Diffie-Hellman) key exchange algorithm
config CRYPTO_DH_RFC7919_GROUPS
bool "RFC 7919 FFDHE groups"
depends on CRYPTO_DH
select CRYPTO_RNG_DEFAULT
help
FFDHE (Finite-Field-based Diffie-Hellman Ephemeral) groups
defined in RFC7919.
Support these finite-field groups in DH key exchanges:
- ffdhe2048, ffdhe3072, ffdhe4096, ffdhe6144, ffdhe8192
If unsure, say N.
config CRYPTO_ECC
tristate
select CRYPTO_RNG_DEFAULT
config CRYPTO_ECDH
tristate "ECDH (Elliptic Curve Diffie-Hellman)"
select CRYPTO_ECC
select CRYPTO_KPP
help
ECDH (Elliptic Curve Diffie-Hellman) key exchange algorithm
using curves P-192, P-256, and P-384 (FIPS 186)
config CRYPTO_ECDSA
tristate "ECDSA (Elliptic Curve Digital Signature Algorithm)"
select CRYPTO_ECC
select CRYPTO_AKCIPHER
select ASN1
help
ECDSA (Elliptic Curve Digital Signature Algorithm) (FIPS 186,
ISO/IEC 14888-3)
using curves P-192, P-256, and P-384
Only signature verification is implemented.
config CRYPTO_ECRDSA
tristate "EC-RDSA (Elliptic Curve Russian Digital Signature Algorithm)"
select CRYPTO_ECC
select CRYPTO_AKCIPHER
select CRYPTO_STREEBOG
select OID_REGISTRY
select ASN1
help
Elliptic Curve Russian Digital Signature Algorithm (GOST R 34.10-2012,
RFC 7091, ISO/IEC 14888-3)
One of the Russian cryptographic standard algorithms (called GOST
algorithms). Only signature verification is implemented.
config CRYPTO_SM2
tristate "SM2 (ShangMi 2)"
select CRYPTO_SM3
select CRYPTO_AKCIPHER
select CRYPTO_MANAGER
select MPILIB
select ASN1
help
SM2 (ShangMi 2) public key algorithm
Published by State Encryption Management Bureau, China,
as specified by OSCCA GM/T 0003.1-2012 -- 0003.5-2012.
References:
https://datatracker.ietf.org/doc/draft-shen-sm2-ecdsa/
http://www.oscca.gov.cn/sca/xxgk/2010-12/17/content_1002386.shtml
http://www.gmbz.org.cn/main/bzlb.html
config CRYPTO_CURVE25519
tristate "Curve25519"
select CRYPTO_KPP
select CRYPTO_LIB_CURVE25519_GENERIC
help
Curve25519 elliptic curve (RFC7748)
endmenu
menu "Block ciphers"
config CRYPTO_AES
tristate "AES (Advanced Encryption Standard)"
select CRYPTO_ALGAPI
select CRYPTO_LIB_AES
help
AES cipher algorithms (Rijndael)(FIPS-197, ISO/IEC 18033-3)
Rijndael appears to be consistently a very good performer in
both hardware and software across a wide range of computing
environments regardless of its use in feedback or non-feedback
modes. Its key setup time is excellent, and its key agility is
good. Rijndael's very low memory requirements make it very well
suited for restricted-space environments, in which it also
demonstrates excellent performance. Rijndael's operations are
among the easiest to defend against power and timing attacks.
The AES specifies three key sizes: 128, 192 and 256 bits
config CRYPTO_AES_TI
tristate "AES (Advanced Encryption Standard) (fixed time)"
select CRYPTO_ALGAPI
select CRYPTO_LIB_AES
help
AES cipher algorithms (Rijndael)(FIPS-197, ISO/IEC 18033-3)
This is a generic implementation of AES that attempts to eliminate
data dependent latencies as much as possible without affecting
performance too much. It is intended for use by the generic CCM
and GCM drivers, and other CTR or CMAC/XCBC based modes that rely
solely on encryption (although decryption is supported as well, but
with a more dramatic performance hit)
Instead of using 16 lookup tables of 1 KB each, (8 for encryption and
8 for decryption), this implementation only uses just two S-boxes of
256 bytes each, and attempts to eliminate data dependent latencies by
prefetching the entire table into the cache at the start of each
block. Interrupts are also disabled to avoid races where cachelines
are evicted when the CPU is interrupted to do something else.
config CRYPTO_ANUBIS
tristate "Anubis"
depends on CRYPTO_USER_API_ENABLE_OBSOLETE
select CRYPTO_ALGAPI
help
Anubis cipher algorithm
Anubis is a variable key length cipher which can use keys from
128 bits to 320 bits in length. It was evaluated as a entrant
in the NESSIE competition.
See https://web.archive.org/web/20160606112246/http://www.larc.usp.br/~pbarreto/AnubisPage.html
for further information.
config CRYPTO_ARIA
tristate "ARIA"
select CRYPTO_ALGAPI
help
ARIA cipher algorithm (RFC5794)
ARIA is a standard encryption algorithm of the Republic of Korea.
The ARIA specifies three key sizes and rounds.
128-bit: 12 rounds.
192-bit: 14 rounds.
256-bit: 16 rounds.
See:
https://seed.kisa.or.kr/kisa/algorithm/EgovAriaInfo.do
config CRYPTO_BLOWFISH
tristate "Blowfish"
select CRYPTO_ALGAPI
select CRYPTO_BLOWFISH_COMMON
help
Blowfish cipher algorithm, by Bruce Schneier
This is a variable key length cipher which can use keys from 32
bits to 448 bits in length. It's fast, simple and specifically
designed for use on "large microprocessors".
See https://www.schneier.com/blowfish.html for further information.
config CRYPTO_BLOWFISH_COMMON
tristate
help
Common parts of the Blowfish cipher algorithm shared by the
generic c and the assembler implementations.
config CRYPTO_CAMELLIA
tristate "Camellia"
select CRYPTO_ALGAPI
help
Camellia cipher algorithms (ISO/IEC 18033-3)
Camellia is a symmetric key block cipher developed jointly
at NTT and Mitsubishi Electric Corporation.
The Camellia specifies three key sizes: 128, 192 and 256 bits.
See https://info.isl.ntt.co.jp/crypt/eng/camellia/ for further information.
config CRYPTO_CAST_COMMON
tristate
help
Common parts of the CAST cipher algorithms shared by the
generic c and the assembler implementations.
config CRYPTO_CAST5
tristate "CAST5 (CAST-128)"
select CRYPTO_ALGAPI
select CRYPTO_CAST_COMMON
help
CAST5 (CAST-128) cipher algorithm (RFC2144, ISO/IEC 18033-3)
config CRYPTO_CAST6
tristate "CAST6 (CAST-256)"
select CRYPTO_ALGAPI
select CRYPTO_CAST_COMMON
help
CAST6 (CAST-256) encryption algorithm (RFC2612)
config CRYPTO_DES
tristate "DES and Triple DES EDE"
select CRYPTO_ALGAPI
select CRYPTO_LIB_DES
help
DES (Data Encryption Standard)(FIPS 46-2, ISO/IEC 18033-3) and
Triple DES EDE (Encrypt/Decrypt/Encrypt) (FIPS 46-3, ISO/IEC 18033-3)
cipher algorithms
config CRYPTO_FCRYPT
tristate "FCrypt"
select CRYPTO_ALGAPI
select CRYPTO_SKCIPHER
help
FCrypt algorithm used by RxRPC
See https://ota.polyonymo.us/fcrypt-paper.txt
config CRYPTO_KHAZAD
tristate "Khazad"
depends on CRYPTO_USER_API_ENABLE_OBSOLETE
select CRYPTO_ALGAPI
help
Khazad cipher algorithm
Khazad was a finalist in the initial NESSIE competition. It is
an algorithm optimized for 64-bit processors with good performance
on 32-bit processors. Khazad uses an 128 bit key size.
See https://web.archive.org/web/20171011071731/http://www.larc.usp.br/~pbarreto/KhazadPage.html
for further information.
config CRYPTO_SEED
tristate "SEED"
depends on CRYPTO_USER_API_ENABLE_OBSOLETE
select CRYPTO_ALGAPI
help
SEED cipher algorithm (RFC4269, ISO/IEC 18033-3)
SEED is a 128-bit symmetric key block cipher that has been
developed by KISA (Korea Information Security Agency) as a
national standard encryption algorithm of the Republic of Korea.
It is a 16 round block cipher with the key size of 128 bit.
See https://seed.kisa.or.kr/kisa/algorithm/EgovSeedInfo.do
for further information.
config CRYPTO_SERPENT
tristate "Serpent"
select CRYPTO_ALGAPI
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen
Keys are allowed to be from 0 to 256 bits in length, in steps
of 8 bits.
See https://www.cl.cam.ac.uk/~rja14/serpent.html for further information.
config CRYPTO_SM4
tristate
config CRYPTO_SM4_GENERIC
tristate "SM4 (ShangMi 4)"
select CRYPTO_ALGAPI
select CRYPTO_SM4
help
SM4 cipher algorithms (OSCCA GB/T 32907-2016,
ISO/IEC 18033-3:2010/Amd 1:2021)
SM4 (GBT.32907-2016) is a cryptographic standard issued by the
Organization of State Commercial Administration of China (OSCCA)
as an authorized cryptographic algorithms for the use within China.
SMS4 was originally created for use in protecting wireless
networks, and is mandated in the Chinese National Standard for
Wireless LAN WAPI (Wired Authentication and Privacy Infrastructure)
(GB.15629.11-2003).
The latest SM4 standard (GBT.32907-2016) was proposed by OSCCA and
standardized through TC 260 of the Standardization Administration
of the People's Republic of China (SAC).
The input, output, and key of SMS4 are each 128 bits.
See https://eprint.iacr.org/2008/329.pdf for further information.
If unsure, say N.
config CRYPTO_TEA
tristate "TEA, XTEA and XETA"
depends on CRYPTO_USER_API_ENABLE_OBSOLETE
select CRYPTO_ALGAPI
help
TEA (Tiny Encryption Algorithm) cipher algorithms
Tiny Encryption Algorithm is a simple cipher that uses
many rounds for security. It is very fast and uses
little memory.
Xtendend Tiny Encryption Algorithm is a modification to
the TEA algorithm to address a potential key weakness
in the TEA algorithm.
Xtendend Encryption Tiny Algorithm is a mis-implementation
of the XTEA algorithm for compatibility purposes.
config CRYPTO_TWOFISH
tristate "Twofish"
select CRYPTO_ALGAPI
select CRYPTO_TWOFISH_COMMON
help
Twofish cipher algorithm
Twofish was submitted as an AES (Advanced Encryption Standard)
candidate cipher by researchers at CounterPane Systems. It is a
16 round block cipher supporting key sizes of 128, 192, and 256
bits.
See https://www.schneier.com/twofish.html for further information.
config CRYPTO_TWOFISH_COMMON
tristate
help
Common parts of the Twofish cipher algorithm shared by the
generic c and the assembler implementations.
endmenu
menu "Length-preserving ciphers and modes"
config CRYPTO_ADIANTUM
tristate "Adiantum"
select CRYPTO_CHACHA20
select CRYPTO_LIB_POLY1305_GENERIC
select CRYPTO_NHPOLY1305
select CRYPTO_MANAGER
help
Adiantum tweakable, length-preserving encryption mode
Designed for fast and secure disk encryption, especially on
CPUs without dedicated crypto instructions. It encrypts
each sector using the XChaCha12 stream cipher, two passes of
an ε-almost-∆-universal hash function, and an invocation of
the AES-256 block cipher on a single 16-byte block. On CPUs
without AES instructions, Adiantum is much faster than
AES-XTS.
Adiantum's security is provably reducible to that of its
underlying stream and block ciphers, subject to a security
bound. Unlike XTS, Adiantum is a true wide-block encryption
mode, so it actually provides an even stronger notion of
security than XTS, subject to the security bound.
If unsure, say N.
config CRYPTO_ARC4
tristate "ARC4 (Alleged Rivest Cipher 4)"
depends on CRYPTO_USER_API_ENABLE_OBSOLETE
select CRYPTO_SKCIPHER
select CRYPTO_LIB_ARC4
help
ARC4 cipher algorithm
ARC4 is a stream cipher using keys ranging from 8 bits to 2048
bits in length. This algorithm is required for driver-based
WEP, but it should not be for other purposes because of the
weakness of the algorithm.
config CRYPTO_CHACHA20
tristate "ChaCha"
select CRYPTO_LIB_CHACHA_GENERIC
select CRYPTO_SKCIPHER
help
The ChaCha20, XChaCha20, and XChaCha12 stream cipher algorithms
ChaCha20 is a 256-bit high-speed stream cipher designed by Daniel J.
Bernstein and further specified in RFC7539 for use in IETF protocols.
This is the portable C implementation of ChaCha20. See
https://cr.yp.to/chacha/chacha-20080128.pdf for further information.
XChaCha20 is the application of the XSalsa20 construction to ChaCha20
rather than to Salsa20. XChaCha20 extends ChaCha20's nonce length
from 64 bits (or 96 bits using the RFC7539 convention) to 192 bits,
while provably retaining ChaCha20's security. See
https://cr.yp.to/snuffle/xsalsa-20081128.pdf for further information.
XChaCha12 is XChaCha20 reduced to 12 rounds, with correspondingly
reduced security margin but increased performance. It can be needed
in some performance-sensitive scenarios.
config CRYPTO_CBC
tristate "CBC (Cipher Block Chaining)"
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
help
CBC (Cipher Block Chaining) mode (NIST SP800-38A)
This block cipher mode is required for IPSec ESP (XFRM_ESP).
config CRYPTO_CFB
tristate "CFB (Cipher Feedback)"
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
help
CFB (Cipher Feedback) mode (NIST SP800-38A)
This block cipher mode is required for TPM2 Cryptography.
config CRYPTO_CTR
tristate "CTR (Counter)"
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
help
CTR (Counter) mode (NIST SP800-38A)
config CRYPTO_CTS
tristate "CTS (Cipher Text Stealing)"
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
help
CBC-CS3 variant of CTS (Cipher Text Stealing) (NIST
Addendum to SP800-38A (October 2010))
This mode is required for Kerberos gss mechanism support
for AES encryption.
config CRYPTO_ECB
tristate "ECB (Electronic Codebook)"
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
help
ECB (Electronic Codebook) mode (NIST SP800-38A)
config CRYPTO_HCTR2
tristate "HCTR2"
select CRYPTO_XCTR
select CRYPTO_POLYVAL
select CRYPTO_MANAGER
help
HCTR2 length-preserving encryption mode
A mode for storage encryption that is efficient on processors with
instructions to accelerate AES and carryless multiplication, e.g.
x86 processors with AES-NI and CLMUL, and ARM processors with the
ARMv8 crypto extensions.
See https://eprint.iacr.org/2021/1441
config CRYPTO_KEYWRAP
tristate "KW (AES Key Wrap)"
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
help
KW (AES Key Wrap) authenticated encryption mode (NIST SP800-38F
and RFC3394) without padding.
config CRYPTO_LRW
tristate "LRW (Liskov Rivest Wagner)"
select CRYPTO_LIB_GF128MUL
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
select CRYPTO_ECB
help
LRW (Liskov Rivest Wagner) mode
A tweakable, non malleable, non movable
narrow block cipher mode for dm-crypt. Use it with cipher
specification string aes-lrw-benbi, the key must be 256, 320 or 384.
The first 128, 192 or 256 bits in the key are used for AES and the
rest is used to tie each cipher block to its logical position.
See https://people.csail.mit.edu/rivest/pubs/LRW02.pdf
config CRYPTO_OFB
tristate "OFB (Output Feedback)"
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
help
OFB (Output Feedback) mode (NIST SP800-38A)
This mode makes a block cipher into a synchronous
stream cipher. It generates keystream blocks, which are then XORed
with the plaintext blocks to get the ciphertext. Flipping a bit in the
ciphertext produces a flipped bit in the plaintext at the same
location. This property allows many error correcting codes to function
normally even when applied before encryption.
config CRYPTO_PCBC
tristate "PCBC (Propagating Cipher Block Chaining)"
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
help
PCBC (Propagating Cipher Block Chaining) mode
This block cipher mode is required for RxRPC.
config CRYPTO_XCTR
tristate
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
help
XCTR (XOR Counter) mode for HCTR2
This blockcipher mode is a variant of CTR mode using XORs and little-endian
addition rather than big-endian arithmetic.
XCTR mode is used to implement HCTR2.
config CRYPTO_XTS
tristate "XTS (XOR Encrypt XOR with ciphertext stealing)"
select CRYPTO_SKCIPHER
select CRYPTO_MANAGER
select CRYPTO_ECB
help
XTS (XOR Encrypt XOR with ciphertext stealing) mode (NIST SP800-38E
and IEEE 1619)
Use with aes-xts-plain, key size 256, 384 or 512 bits. This
implementation currently can't handle a sectorsize which is not a
multiple of 16 bytes.
config CRYPTO_NHPOLY1305
tristate
select CRYPTO_HASH
select CRYPTO_LIB_POLY1305_GENERIC
endmenu
menu "AEAD (authenticated encryption with associated data) ciphers"
config CRYPTO_AEGIS128
tristate "AEGIS-128"
select CRYPTO_AEAD
select CRYPTO_AES # for AES S-box tables
help
AEGIS-128 AEAD algorithm
config CRYPTO_AEGIS128_SIMD
bool "AEGIS-128 (arm NEON, arm64 NEON)"
depends on CRYPTO_AEGIS128 && ((ARM || ARM64) && KERNEL_MODE_NEON)
default y
help
AEGIS-128 AEAD algorithm
Architecture: arm or arm64 using:
- NEON (Advanced SIMD) extension
config CRYPTO_CHACHA20POLY1305
tristate "ChaCha20-Poly1305"
select CRYPTO_CHACHA20
select CRYPTO_POLY1305
select CRYPTO_AEAD
select CRYPTO_MANAGER
help
ChaCha20 stream cipher and Poly1305 authenticator combined
mode (RFC8439)
config CRYPTO_CCM
tristate "CCM (Counter with Cipher Block Chaining-MAC)"
select CRYPTO_CTR
select CRYPTO_HASH
select CRYPTO_AEAD
select CRYPTO_MANAGER
help
CCM (Counter with Cipher Block Chaining-Message Authentication Code)
authenticated encryption mode (NIST SP800-38C)
config CRYPTO_GCM
tristate "GCM (Galois/Counter Mode) and GMAC (GCM MAC)"
select CRYPTO_CTR
select CRYPTO_AEAD
select CRYPTO_GHASH
select CRYPTO_NULL
select CRYPTO_MANAGER
help
GCM (Galois/Counter Mode) authenticated encryption mode and GMAC
(GCM Message Authentication Code) (NIST SP800-38D)
This is required for IPSec ESP (XFRM_ESP).
config CRYPTO_GENIV
tristate
select CRYPTO_AEAD
select CRYPTO_NULL
select CRYPTO_MANAGER
select CRYPTO_RNG_DEFAULT
config CRYPTO_SEQIV
tristate "Sequence Number IV Generator"
select CRYPTO_GENIV
help
Sequence Number IV generator
This IV generator generates an IV based on a sequence number by
xoring it with a salt. This algorithm is mainly useful for CTR.
This is required for IPsec ESP (XFRM_ESP).
config CRYPTO_ECHAINIV
tristate "Encrypted Chain IV Generator"
select CRYPTO_GENIV
help
Encrypted Chain IV generator
This IV generator generates an IV based on the encryption of
a sequence number xored with a salt. This is the default
algorithm for CBC.
config CRYPTO_ESSIV
tristate "Encrypted Salt-Sector IV Generator"
select CRYPTO_AUTHENC
help
Encrypted Salt-Sector IV generator
This IV generator is used in some cases by fscrypt and/or
dm-crypt. It uses the hash of the block encryption key as the
symmetric key for a block encryption pass applied to the input
IV, making low entropy IV sources more suitable for block
encryption.
This driver implements a crypto API template that can be
instantiated either as an skcipher or as an AEAD (depending on the
type of the first template argument), and which defers encryption
and decryption requests to the encapsulated cipher after applying
ESSIV to the input IV. Note that in the AEAD case, it is assumed
that the keys are presented in the same format used by the authenc
template, and that the IV appears at the end of the authenticated
associated data (AAD) region (which is how dm-crypt uses it.)
Note that the use of ESSIV is not recommended for new deployments,
and so this only needs to be enabled when interoperability with
existing encrypted volumes of filesystems is required, or when
building for a particular system that requires it (e.g., when
the SoC in question has accelerated CBC but not XTS, making CBC
combined with ESSIV the only feasible mode for h/w accelerated
block encryption)
endmenu
menu "Hashes, digests, and MACs"
config CRYPTO_BLAKE2B
tristate "BLAKE2b"
select CRYPTO_HASH
help
BLAKE2b cryptographic hash function (RFC 7693)
BLAKE2b is optimized for 64-bit platforms and can produce digests
of any size between 1 and 64 bytes. The keyed hash is also implemented.
This module provides the following algorithms:
- blake2b-160
- blake2b-256
- blake2b-384
- blake2b-512
Used by the btrfs filesystem.
See https://blake2.net for further information.
config CRYPTO_CMAC
tristate "CMAC (Cipher-based MAC)"
select CRYPTO_HASH
select CRYPTO_MANAGER
help
CMAC (Cipher-based Message Authentication Code) authentication
mode (NIST SP800-38B and IETF RFC4493)
config CRYPTO_GHASH
tristate "GHASH"
select CRYPTO_HASH
select CRYPTO_LIB_GF128MUL
help
GCM GHASH function (NIST SP800-38D)