crypto/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # Generic algorithms support
   4 #
   5 config XOR_BLOCKS
   6         tristate
   7
   8 #
   9 # async_tx api: hardware offloaded memory transfer/transform support
  10 #
  11 source "crypto/async_tx/Kconfig"
  12
  13 #
  14 # Cryptographic API Configuration
  15 #
  16 menuconfig CRYPTO
  17         tristate "Cryptographic API"
  18         select CRYPTO_LIB_UTILS
  19         help
  20           This option provides the core Cryptographic API.
  21
  22 if CRYPTO
  23
  24 menu "Crypto core or helper"
  25
  26 config CRYPTO_FIPS
  27         bool "FIPS 200 compliance"
  28         depends on (CRYPTO_ANSI_CPRNG || CRYPTO_DRBG) && !CRYPTO_MANAGER_DISABLE_TESTS
  29         depends on (MODULE_SIG || !MODULES)
  30         help
  31           This option enables the fips boot option which is
  32           required if you want the system to operate in a FIPS 200
  33           certification.  You should say no unless you know what
  34           this is.
  35
  36 config CRYPTO_FIPS_NAME
  37         string "FIPS Module Name"
  38         default "Linux Kernel Cryptographic API"
  39         depends on CRYPTO_FIPS
  40         help
  41           This option sets the FIPS Module name reported by the Crypto API via
  42           the /proc/sys/crypto/fips_name file.
  43
  44 config CRYPTO_FIPS_CUSTOM_VERSION
  45         bool "Use Custom FIPS Module Version"
  46         depends on CRYPTO_FIPS
  47         default n
  48
  49 config CRYPTO_FIPS_VERSION
  50         string "FIPS Module Version"
  51         default "(none)"
  52         depends on CRYPTO_FIPS_CUSTOM_VERSION
  53         help
  54           This option provides the ability to override the FIPS Module Version.
  55           By default the KERNELRELEASE value is used.
  56
  57 config CRYPTO_ALGAPI
  58         tristate
  59         select CRYPTO_ALGAPI2
  60         help
  61           This option provides the API for cryptographic algorithms.
  62
  63 config CRYPTO_ALGAPI2
  64         tristate
  65
  66 config CRYPTO_AEAD
  67         tristate
  68         select CRYPTO_AEAD2
  69         select CRYPTO_ALGAPI
  70
  71 config CRYPTO_AEAD2
  72         tristate
  73         select CRYPTO_ALGAPI2
  74
  75 config CRYPTO_SIG
  76         tristate
  77         select CRYPTO_SIG2
  78         select CRYPTO_ALGAPI
  79
  80 config CRYPTO_SIG2
  81         tristate
  82         select CRYPTO_ALGAPI2
  83
  84 config CRYPTO_SKCIPHER
  85         tristate
  86         select CRYPTO_SKCIPHER2
  87         select CRYPTO_ALGAPI
  88         select CRYPTO_ECB
  89
  90 config CRYPTO_SKCIPHER2
  91         tristate
  92         select CRYPTO_ALGAPI2
  93
  94 config CRYPTO_HASH
  95         tristate
  96         select CRYPTO_HASH2
  97         select CRYPTO_ALGAPI
  98
  99 config CRYPTO_HASH2
 100         tristate
 101         select CRYPTO_ALGAPI2
 102
 103 config CRYPTO_RNG
 104         tristate
 105         select CRYPTO_RNG2
 106         select CRYPTO_ALGAPI
 107
 108 config CRYPTO_RNG2
 109         tristate
 110         select CRYPTO_ALGAPI2
 111
 112 config CRYPTO_RNG_DEFAULT
 113         tristate
 114         select CRYPTO_DRBG_MENU
 115
 116 config CRYPTO_AKCIPHER2
 117         tristate
 118         select CRYPTO_ALGAPI2
 119
 120 config CRYPTO_AKCIPHER
 121         tristate
 122         select CRYPTO_AKCIPHER2
 123         select CRYPTO_ALGAPI
 124
 125 config CRYPTO_KPP2
 126         tristate
 127         select CRYPTO_ALGAPI2
 128
 129 config CRYPTO_KPP
 130         tristate
 131         select CRYPTO_ALGAPI
 132         select CRYPTO_KPP2
 133
 134 config CRYPTO_ACOMP2
 135         tristate
 136         select CRYPTO_ALGAPI2
 137         select SGL_ALLOC
 138
 139 config CRYPTO_ACOMP
 140         tristate
 141         select CRYPTO_ALGAPI
 142         select CRYPTO_ACOMP2
 143
 144 config CRYPTO_MANAGER
 145         tristate "Cryptographic algorithm manager"
 146         select CRYPTO_MANAGER2
 147         help
 148           Create default cryptographic template instantiations such as
 149           cbc(aes).
 150
 151 config CRYPTO_MANAGER2
 152         def_tristate CRYPTO_MANAGER || (CRYPTO_MANAGER!=n && CRYPTO_ALGAPI=y)
 153         select CRYPTO_ACOMP2
 154         select CRYPTO_AEAD2
 155         select CRYPTO_AKCIPHER2
 156         select CRYPTO_SIG2
 157         select CRYPTO_HASH2
 158         select CRYPTO_KPP2
 159         select CRYPTO_RNG2
 160         select CRYPTO_SKCIPHER2
 161
 162 config CRYPTO_USER
 163         tristate "Userspace cryptographic algorithm configuration"
 164         depends on NET
 165         select CRYPTO_MANAGER
 166         help
 167           Userspace configuration for cryptographic instantiations such as
 168           cbc(aes).
 169
 170 config CRYPTO_MANAGER_DISABLE_TESTS
 171         bool "Disable run-time self tests"
 172         default y
 173         help
 174           Disable run-time self tests that normally take place at
 175           algorithm registration.
 176
 177 config CRYPTO_MANAGER_EXTRA_TESTS
 178         bool "Enable extra run-time crypto self tests"
 179         depends on DEBUG_KERNEL && !CRYPTO_MANAGER_DISABLE_TESTS && CRYPTO_MANAGER
 180         help
 181           Enable extra run-time self tests of registered crypto algorithms,
 182           including randomized fuzz tests.
 183
 184           This is intended for developer use only, as these tests take much
 185           longer to run than the normal self tests.
 186
 187 config CRYPTO_NULL
 188         tristate "Null algorithms"
 189         select CRYPTO_NULL2
 190         help
 191           These are 'Null' algorithms, used by IPsec, which do nothing.
 192
 193 config CRYPTO_NULL2
 194         tristate
 195         select CRYPTO_ALGAPI2
 196         select CRYPTO_SKCIPHER2
 197         select CRYPTO_HASH2
 198
 199 config CRYPTO_PCRYPT
 200         tristate "Parallel crypto engine"
 201         depends on SMP
 202         select PADATA
 203         select CRYPTO_MANAGER
 204         select CRYPTO_AEAD
 205         help
 206           This converts an arbitrary crypto algorithm into a parallel
 207           algorithm that executes in kernel threads.
 208
 209 config CRYPTO_CRYPTD
 210         tristate "Software async crypto daemon"
 211         select CRYPTO_SKCIPHER
 212         select CRYPTO_HASH
 213         select CRYPTO_MANAGER
 214         help
 215           This is a generic software asynchronous crypto daemon that
 216           converts an arbitrary synchronous software crypto algorithm
 217           into an asynchronous algorithm that executes in a kernel thread.
 218
 219 config CRYPTO_AUTHENC
 220         tristate "Authenc support"
 221         select CRYPTO_AEAD
 222         select CRYPTO_SKCIPHER
 223         select CRYPTO_MANAGER
 224         select CRYPTO_HASH
 225         select CRYPTO_NULL
 226         help
 227           Authenc: Combined mode wrapper for IPsec.
 228
 229           This is required for IPSec ESP (XFRM_ESP).
 230
 231 config CRYPTO_TEST
 232         tristate "Testing module"
 233         depends on m || EXPERT
 234         select CRYPTO_MANAGER
 235         help
 236           Quick & dirty crypto test module.
 237
 238 config CRYPTO_SIMD
 239         tristate
 240         select CRYPTO_CRYPTD
 241
 242 config CRYPTO_ENGINE
 243         tristate
 244
 245 endmenu
 246
 247 menu "Public-key cryptography"
 248
 249 config CRYPTO_RSA
 250         tristate "RSA (Rivest-Shamir-Adleman)"
 251         select CRYPTO_AKCIPHER
 252         select CRYPTO_MANAGER
 253         select MPILIB
 254         select ASN1
 255         help
 256           RSA (Rivest-Shamir-Adleman) public key algorithm (RFC8017)
 257
 258 config CRYPTO_DH
 259         tristate "DH (Diffie-Hellman)"
 260         select CRYPTO_KPP
 261         select MPILIB
 262         help
 263           DH (Diffie-Hellman) key exchange algorithm
 264
 265 config CRYPTO_DH_RFC7919_GROUPS
 266         bool "RFC 7919 FFDHE groups"
 267         depends on CRYPTO_DH
 268         select CRYPTO_RNG_DEFAULT
 269         help
 270           FFDHE (Finite-Field-based Diffie-Hellman Ephemeral) groups
 271           defined in RFC7919.
 272
 273           Support these finite-field groups in DH key exchanges:
 274           - ffdhe2048, ffdhe3072, ffdhe4096, ffdhe6144, ffdhe8192
 275
 276           If unsure, say N.
 277
 278 config CRYPTO_ECC
 279         tristate
 280         select CRYPTO_RNG_DEFAULT
 281
 282 config CRYPTO_ECDH
 283         tristate "ECDH (Elliptic Curve Diffie-Hellman)"
 284         select CRYPTO_ECC
 285         select CRYPTO_KPP
 286         help
 287           ECDH (Elliptic Curve Diffie-Hellman) key exchange algorithm
 288           using curves P-192, P-256, and P-384 (FIPS 186)
 289
 290 config CRYPTO_ECDSA
 291         tristate "ECDSA (Elliptic Curve Digital Signature Algorithm)"
 292         select CRYPTO_ECC
 293         select CRYPTO_AKCIPHER
 294         select ASN1
 295         help
 296           ECDSA (Elliptic Curve Digital Signature Algorithm) (FIPS 186,
 297           ISO/IEC 14888-3)
 298           using curves P-192, P-256, and P-384
 299
 300           Only signature verification is implemented.
 301
 302 config CRYPTO_ECRDSA
 303         tristate "EC-RDSA (Elliptic Curve Russian Digital Signature Algorithm)"
 304         select CRYPTO_ECC
 305         select CRYPTO_AKCIPHER
 306         select CRYPTO_STREEBOG
 307         select OID_REGISTRY
 308         select ASN1
 309         help
 310           Elliptic Curve Russian Digital Signature Algorithm (GOST R 34.10-2012,
 311           RFC 7091, ISO/IEC 14888-3)
 312
 313           One of the Russian cryptographic standard algorithms (called GOST
 314           algorithms). Only signature verification is implemented.
 315
 316 config CRYPTO_SM2
 317         tristate "SM2 (ShangMi 2)"
 318         select CRYPTO_SM3
 319         select CRYPTO_AKCIPHER
 320         select CRYPTO_MANAGER
 321         select MPILIB
 322         select ASN1
 323         help
 324           SM2 (ShangMi 2) public key algorithm
 325
 326           Published by State Encryption Management Bureau, China,
 327           as specified by OSCCA GM/T 0003.1-2012 -- 0003.5-2012.
 328
 329           References:
 330           https://datatracker.ietf.org/doc/draft-shen-sm2-ecdsa/
 331           http://www.oscca.gov.cn/sca/xxgk/2010-12/17/content_1002386.shtml
 332           http://www.gmbz.org.cn/main/bzlb.html
 333
 334 config CRYPTO_CURVE25519
 335         tristate "Curve25519"
 336         select CRYPTO_KPP
 337         select CRYPTO_LIB_CURVE25519_GENERIC
 338         help
 339           Curve25519 elliptic curve (RFC7748)
 340
 341 endmenu
 342
 343 menu "Block ciphers"
 344
 345 config CRYPTO_AES
 346         tristate "AES (Advanced Encryption Standard)"
 347         select CRYPTO_ALGAPI
 348         select CRYPTO_LIB_AES
 349         help
 350           AES cipher algorithms (Rijndael)(FIPS-197, ISO/IEC 18033-3)
 351
 352           Rijndael appears to be consistently a very good performer in
 353           both hardware and software across a wide range of computing
 354           environments regardless of its use in feedback or non-feedback
 355           modes. Its key setup time is excellent, and its key agility is
 356           good. Rijndael's very low memory requirements make it very well
 357           suited for restricted-space environments, in which it also
 358           demonstrates excellent performance. Rijndael's operations are
 359           among the easiest to defend against power and timing attacks.
 360
 361           The AES specifies three key sizes: 128, 192 and 256 bits
 362
 363 config CRYPTO_AES_TI
 364         tristate "AES (Advanced Encryption Standard) (fixed time)"
 365         select CRYPTO_ALGAPI
 366         select CRYPTO_LIB_AES
 367         help
 368           AES cipher algorithms (Rijndael)(FIPS-197, ISO/IEC 18033-3)
 369
 370           This is a generic implementation of AES that attempts to eliminate
 371           data dependent latencies as much as possible without affecting
 372           performance too much. It is intended for use by the generic CCM
 373           and GCM drivers, and other CTR or CMAC/XCBC based modes that rely
 374           solely on encryption (although decryption is supported as well, but
 375           with a more dramatic performance hit)
 376
 377           Instead of using 16 lookup tables of 1 KB each, (8 for encryption and
 378           8 for decryption), this implementation only uses just two S-boxes of
 379           256 bytes each, and attempts to eliminate data dependent latencies by
 380           prefetching the entire table into the cache at the start of each
 381           block. Interrupts are also disabled to avoid races where cachelines
 382           are evicted when the CPU is interrupted to do something else.
 383
 384 config CRYPTO_ANUBIS
 385         tristate "Anubis"
 386         depends on CRYPTO_USER_API_ENABLE_OBSOLETE
 387         select CRYPTO_ALGAPI
 388         help
 389           Anubis cipher algorithm
 390
 391           Anubis is a variable key length cipher which can use keys from
 392           128 bits to 320 bits in length.  It was evaluated as a entrant
 393           in the NESSIE competition.
 394
 395           See https://web.archive.org/web/20160606112246/http://www.larc.usp.br/~pbarreto/AnubisPage.html
 396           for further information.
 397
 398 config CRYPTO_ARIA
 399         tristate "ARIA"
 400         select CRYPTO_ALGAPI
 401         help
 402           ARIA cipher algorithm (RFC5794)
 403
 404           ARIA is a standard encryption algorithm of the Republic of Korea.
 405           The ARIA specifies three key sizes and rounds.
 406           128-bit: 12 rounds.
 407           192-bit: 14 rounds.
 408           256-bit: 16 rounds.
 409
 410           See:
 411           https://seed.kisa.or.kr/kisa/algorithm/EgovAriaInfo.do
 412
 413 config CRYPTO_BLOWFISH
 414         tristate "Blowfish"
 415         select CRYPTO_ALGAPI
 416         select CRYPTO_BLOWFISH_COMMON
 417         help
 418           Blowfish cipher algorithm, by Bruce Schneier
 419
 420           This is a variable key length cipher which can use keys from 32
 421           bits to 448 bits in length.  It's fast, simple and specifically
 422           designed for use on "large microprocessors".
 423
 424           See https://www.schneier.com/blowfish.html for further information.
 425
 426 config CRYPTO_BLOWFISH_COMMON
 427         tristate
 428         help
 429           Common parts of the Blowfish cipher algorithm shared by the
 430           generic c and the assembler implementations.
 431
 432 config CRYPTO_CAMELLIA
 433         tristate "Camellia"
 434         select CRYPTO_ALGAPI
 435         help
 436           Camellia cipher algorithms (ISO/IEC 18033-3)
 437
 438           Camellia is a symmetric key block cipher developed jointly
 439           at NTT and Mitsubishi Electric Corporation.
 440
 441           The Camellia specifies three key sizes: 128, 192 and 256 bits.
 442
 443           See https://info.isl.ntt.co.jp/crypt/eng/camellia/ for further information.
 444
 445 config CRYPTO_CAST_COMMON
 446         tristate
 447         help
 448           Common parts of the CAST cipher algorithms shared by the
 449           generic c and the assembler implementations.
 450
 451 config CRYPTO_CAST5
 452         tristate "CAST5 (CAST-128)"
 453         select CRYPTO_ALGAPI
 454         select CRYPTO_CAST_COMMON
 455         help
 456           CAST5 (CAST-128) cipher algorithm (RFC2144, ISO/IEC 18033-3)
 457
 458 config CRYPTO_CAST6
 459         tristate "CAST6 (CAST-256)"
 460         select CRYPTO_ALGAPI
 461         select CRYPTO_CAST_COMMON
 462         help
 463           CAST6 (CAST-256) encryption algorithm (RFC2612)
 464
 465 config CRYPTO_DES
 466         tristate "DES and Triple DES EDE"
 467         select CRYPTO_ALGAPI
 468         select CRYPTO_LIB_DES
 469         help
 470           DES (Data Encryption Standard)(FIPS 46-2, ISO/IEC 18033-3) and
 471           Triple DES EDE (Encrypt/Decrypt/Encrypt) (FIPS 46-3, ISO/IEC 18033-3)
 472           cipher algorithms
 473
 474 config CRYPTO_FCRYPT
 475         tristate "FCrypt"
 476         select CRYPTO_ALGAPI
 477         select CRYPTO_SKCIPHER
 478         help
 479           FCrypt algorithm used by RxRPC
 480
 481           See https://ota.polyonymo.us/fcrypt-paper.txt
 482
 483 config CRYPTO_KHAZAD
 484         tristate "Khazad"
 485         depends on CRYPTO_USER_API_ENABLE_OBSOLETE
 486         select CRYPTO_ALGAPI
 487         help
 488           Khazad cipher algorithm
 489
 490           Khazad was a finalist in the initial NESSIE competition.  It is
 491           an algorithm optimized for 64-bit processors with good performance
 492           on 32-bit processors.  Khazad uses an 128 bit key size.
 493
 494           See https://web.archive.org/web/20171011071731/http://www.larc.usp.br/~pbarreto/KhazadPage.html
 495           for further information.
 496
 497 config CRYPTO_SEED
 498         tristate "SEED"
 499         depends on CRYPTO_USER_API_ENABLE_OBSOLETE
 500         select CRYPTO_ALGAPI
 501         help
 502           SEED cipher algorithm (RFC4269, ISO/IEC 18033-3)
 503
 504           SEED is a 128-bit symmetric key block cipher that has been
 505           developed by KISA (Korea Information Security Agency) as a
 506           national standard encryption algorithm of the Republic of Korea.
 507           It is a 16 round block cipher with the key size of 128 bit.
 508
 509           See https://seed.kisa.or.kr/kisa/algorithm/EgovSeedInfo.do
 510           for further information.
 511
 512 config CRYPTO_SERPENT
 513         tristate "Serpent"
 514         select CRYPTO_ALGAPI
 515         help
 516           Serpent cipher algorithm, by Anderson, Biham & Knudsen
 517
 518           Keys are allowed to be from 0 to 256 bits in length, in steps
 519           of 8 bits.
 520
 521           See https://www.cl.cam.ac.uk/~rja14/serpent.html for further information.
 522
 523 config CRYPTO_SM4
 524         tristate
 525
 526 config CRYPTO_SM4_GENERIC
 527         tristate "SM4 (ShangMi 4)"
 528         select CRYPTO_ALGAPI
 529         select CRYPTO_SM4
 530         help
 531           SM4 cipher algorithms (OSCCA GB/T 32907-2016,
 532           ISO/IEC 18033-3:2010/Amd 1:2021)
 533
 534           SM4 (GBT.32907-2016) is a cryptographic standard issued by the
 535           Organization of State Commercial Administration of China (OSCCA)
 536           as an authorized cryptographic algorithms for the use within China.
 537
 538           SMS4 was originally created for use in protecting wireless
 539           networks, and is mandated in the Chinese National Standard for
 540           Wireless LAN WAPI (Wired Authentication and Privacy Infrastructure)
 541           (GB.15629.11-2003).
 542
 543           The latest SM4 standard (GBT.32907-2016) was proposed by OSCCA and
 544           standardized through TC 260 of the Standardization Administration
 545           of the People's Republic of China (SAC).
 546
 547           The input, output, and key of SMS4 are each 128 bits.
 548
 549           See https://eprint.iacr.org/2008/329.pdf for further information.
 550
 551           If unsure, say N.
 552
 553 config CRYPTO_TEA
 554         tristate "TEA, XTEA and XETA"
 555         depends on CRYPTO_USER_API_ENABLE_OBSOLETE
 556         select CRYPTO_ALGAPI
 557         help
 558           TEA (Tiny Encryption Algorithm) cipher algorithms
 559
 560           Tiny Encryption Algorithm is a simple cipher that uses
 561           many rounds for security.  It is very fast and uses
 562           little memory.
 563
 564           Xtendend Tiny Encryption Algorithm is a modification to
 565           the TEA algorithm to address a potential key weakness
 566           in the TEA algorithm.
 567
 568           Xtendend Encryption Tiny Algorithm is a mis-implementation
 569           of the XTEA algorithm for compatibility purposes.
 570
 571 config CRYPTO_TWOFISH
 572         tristate "Twofish"
 573         select CRYPTO_ALGAPI
 574         select CRYPTO_TWOFISH_COMMON
 575         help
 576           Twofish cipher algorithm
 577
 578           Twofish was submitted as an AES (Advanced Encryption Standard)
 579           candidate cipher by researchers at CounterPane Systems.  It is a
 580           16 round block cipher supporting key sizes of 128, 192, and 256
 581           bits.
 582
 583           See https://www.schneier.com/twofish.html for further information.
 584
 585 config CRYPTO_TWOFISH_COMMON
 586         tristate
 587         help
 588           Common parts of the Twofish cipher algorithm shared by the
 589           generic c and the assembler implementations.
 590
 591 endmenu
 592
 593 menu "Length-preserving ciphers and modes"
 594
 595 config CRYPTO_ADIANTUM
 596         tristate "Adiantum"
 597         select CRYPTO_CHACHA20
 598         select CRYPTO_LIB_POLY1305_GENERIC
 599         select CRYPTO_NHPOLY1305
 600         select CRYPTO_MANAGER
 601         help
 602           Adiantum tweakable, length-preserving encryption mode
 603
 604           Designed for fast and secure disk encryption, especially on
 605           CPUs without dedicated crypto instructions.  It encrypts
 606           each sector using the XChaCha12 stream cipher, two passes of
 607           an ε-almost-∆-universal hash function, and an invocation of
 608           the AES-256 block cipher on a single 16-byte block.  On CPUs
 609           without AES instructions, Adiantum is much faster than
 610           AES-XTS.
 611
 612           Adiantum's security is provably reducible to that of its
 613           underlying stream and block ciphers, subject to a security
 614           bound.  Unlike XTS, Adiantum is a true wide-block encryption
 615           mode, so it actually provides an even stronger notion of
 616           security than XTS, subject to the security bound.
 617
 618           If unsure, say N.
 619
 620 config CRYPTO_ARC4
 621         tristate "ARC4 (Alleged Rivest Cipher 4)"
 622         depends on CRYPTO_USER_API_ENABLE_OBSOLETE
 623         select CRYPTO_SKCIPHER
 624         select CRYPTO_LIB_ARC4
 625         help
 626           ARC4 cipher algorithm
 627
 628           ARC4 is a stream cipher using keys ranging from 8 bits to 2048
 629           bits in length.  This algorithm is required for driver-based
 630           WEP, but it should not be for other purposes because of the
 631           weakness of the algorithm.
 632
 633 config CRYPTO_CHACHA20
 634         tristate "ChaCha"
 635         select CRYPTO_LIB_CHACHA_GENERIC
 636         select CRYPTO_SKCIPHER
 637         help
 638           The ChaCha20, XChaCha20, and XChaCha12 stream cipher algorithms
 639
 640           ChaCha20 is a 256-bit high-speed stream cipher designed by Daniel J.
 641           Bernstein and further specified in RFC7539 for use in IETF protocols.
 642           This is the portable C implementation of ChaCha20.  See
 643           https://cr.yp.to/chacha/chacha-20080128.pdf for further information.
 644
 645           XChaCha20 is the application of the XSalsa20 construction to ChaCha20
 646           rather than to Salsa20.  XChaCha20 extends ChaCha20's nonce length
 647           from 64 bits (or 96 bits using the RFC7539 convention) to 192 bits,
 648           while provably retaining ChaCha20's security.  See
 649           https://cr.yp.to/snuffle/xsalsa-20081128.pdf for further information.
 650
 651           XChaCha12 is XChaCha20 reduced to 12 rounds, with correspondingly
 652           reduced security margin but increased performance.  It can be needed
 653           in some performance-sensitive scenarios.
 654
 655 config CRYPTO_CBC
 656         tristate "CBC (Cipher Block Chaining)"
 657         select CRYPTO_SKCIPHER
 658         select CRYPTO_MANAGER
 659         help
 660           CBC (Cipher Block Chaining) mode (NIST SP800-38A)
 661
 662           This block cipher mode is required for IPSec ESP (XFRM_ESP).
 663
 664 config CRYPTO_CTR
 665         tristate "CTR (Counter)"
 666         select CRYPTO_SKCIPHER
 667         select CRYPTO_MANAGER
 668         help
 669           CTR (Counter) mode (NIST SP800-38A)
 670
 671 config CRYPTO_CTS
 672         tristate "CTS (Cipher Text Stealing)"
 673         select CRYPTO_SKCIPHER
 674         select CRYPTO_MANAGER
 675         help
 676           CBC-CS3 variant of CTS (Cipher Text Stealing) (NIST
 677           Addendum to SP800-38A (October 2010))
 678
 679           This mode is required for Kerberos gss mechanism support
 680           for AES encryption.
 681
 682 config CRYPTO_ECB
 683         tristate "ECB (Electronic Codebook)"
 684         select CRYPTO_SKCIPHER2
 685         select CRYPTO_MANAGER
 686         help
 687           ECB (Electronic Codebook) mode (NIST SP800-38A)
 688
 689 config CRYPTO_HCTR2
 690         tristate "HCTR2"
 691         select CRYPTO_XCTR
 692         select CRYPTO_POLYVAL
 693         select CRYPTO_MANAGER
 694         help
 695           HCTR2 length-preserving encryption mode
 696
 697           A mode for storage encryption that is efficient on processors with
 698           instructions to accelerate AES and carryless multiplication, e.g.
 699           x86 processors with AES-NI and CLMUL, and ARM processors with the
 700           ARMv8 crypto extensions.
 701
 702           See https://eprint.iacr.org/2021/1441
 703
 704 config CRYPTO_KEYWRAP
 705         tristate "KW (AES Key Wrap)"
 706         select CRYPTO_SKCIPHER
 707         select CRYPTO_MANAGER
 708         help
 709           KW (AES Key Wrap) authenticated encryption mode (NIST SP800-38F
 710           and RFC3394) without padding.
 711
 712 config CRYPTO_LRW
 713         tristate "LRW (Liskov Rivest Wagner)"
 714         select CRYPTO_LIB_GF128MUL
 715         select CRYPTO_SKCIPHER
 716         select CRYPTO_MANAGER
 717         select CRYPTO_ECB
 718         help
 719           LRW (Liskov Rivest Wagner) mode
 720
 721           A tweakable, non malleable, non movable
 722           narrow block cipher mode for dm-crypt.  Use it with cipher
 723           specification string aes-lrw-benbi, the key must be 256, 320 or 384.
 724           The first 128, 192 or 256 bits in the key are used for AES and the
 725           rest is used to tie each cipher block to its logical position.
 726
 727           See https://people.csail.mit.edu/rivest/pubs/LRW02.pdf
 728
 729 config CRYPTO_PCBC
 730         tristate "PCBC (Propagating Cipher Block Chaining)"
 731         select CRYPTO_SKCIPHER
 732         select CRYPTO_MANAGER
 733         help
 734           PCBC (Propagating Cipher Block Chaining) mode
 735
 736           This block cipher mode is required for RxRPC.
 737
 738 config CRYPTO_XCTR
 739         tristate
 740         select CRYPTO_SKCIPHER
 741         select CRYPTO_MANAGER
 742         help
 743           XCTR (XOR Counter) mode for HCTR2
 744
 745           This blockcipher mode is a variant of CTR mode using XORs and little-endian
 746           addition rather than big-endian arithmetic.
 747
 748           XCTR mode is used to implement HCTR2.
 749
 750 config CRYPTO_XTS
 751         tristate "XTS (XOR Encrypt XOR with ciphertext stealing)"
 752         select CRYPTO_SKCIPHER
 753         select CRYPTO_MANAGER
 754         select CRYPTO_ECB
 755         help
 756           XTS (XOR Encrypt XOR with ciphertext stealing) mode (NIST SP800-38E
 757           and IEEE 1619)
 758
 759           Use with aes-xts-plain, key size 256, 384 or 512 bits. This
 760           implementation currently can't handle a sectorsize which is not a
 761           multiple of 16 bytes.
 762
 763 config CRYPTO_NHPOLY1305
 764         tristate
 765         select CRYPTO_HASH
 766         select CRYPTO_LIB_POLY1305_GENERIC
 767
 768 endmenu
 769
 770 menu "AEAD (authenticated encryption with associated data) ciphers"
 771
 772 config CRYPTO_AEGIS128
 773         tristate "AEGIS-128"
 774         select CRYPTO_AEAD
 775         select CRYPTO_AES  # for AES S-box tables
 776         help
 777           AEGIS-128 AEAD algorithm
 778
 779 config CRYPTO_AEGIS128_SIMD
 780         bool "AEGIS-128 (arm NEON, arm64 NEON)"
 781         depends on CRYPTO_AEGIS128 && ((ARM || ARM64) && KERNEL_MODE_NEON)
 782         default y
 783         help
 784           AEGIS-128 AEAD algorithm
 785
 786           Architecture: arm or arm64 using:
 787           - NEON (Advanced SIMD) extension
 788
 789 config CRYPTO_CHACHA20POLY1305
 790         tristate "ChaCha20-Poly1305"
 791         select CRYPTO_CHACHA20
 792         select CRYPTO_POLY1305
 793         select CRYPTO_AEAD
 794         select CRYPTO_MANAGER
 795         help
 796           ChaCha20 stream cipher and Poly1305 authenticator combined
 797           mode (RFC8439)
 798
 799 config CRYPTO_CCM
 800         tristate "CCM (Counter with Cipher Block Chaining-MAC)"
 801         select CRYPTO_CTR
 802         select CRYPTO_HASH
 803         select CRYPTO_AEAD
 804         select CRYPTO_MANAGER
 805         help
 806           CCM (Counter with Cipher Block Chaining-Message Authentication Code)
 807           authenticated encryption mode (NIST SP800-38C)
 808
 809 config CRYPTO_GCM
 810         tristate "GCM (Galois/Counter Mode) and GMAC (GCM MAC)"
 811         select CRYPTO_CTR
 812         select CRYPTO_AEAD
 813         select CRYPTO_GHASH
 814         select CRYPTO_NULL
 815         select CRYPTO_MANAGER
 816         help
 817           GCM (Galois/Counter Mode) authenticated encryption mode and GMAC
 818           (GCM Message Authentication Code) (NIST SP800-38D)
 819
 820           This is required for IPSec ESP (XFRM_ESP).
 821
 822 config CRYPTO_GENIV
 823         tristate
 824         select CRYPTO_AEAD
 825         select CRYPTO_NULL
 826         select CRYPTO_MANAGER
 827         select CRYPTO_RNG_DEFAULT
 828
 829 config CRYPTO_SEQIV
 830         tristate "Sequence Number IV Generator"
 831         select CRYPTO_GENIV
 832         help
 833           Sequence Number IV generator
 834
 835           This IV generator generates an IV based on a sequence number by
 836           xoring it with a salt.  This algorithm is mainly useful for CTR.
 837
 838           This is required for IPsec ESP (XFRM_ESP).
 839
 840 config CRYPTO_ECHAINIV
 841         tristate "Encrypted Chain IV Generator"
 842         select CRYPTO_GENIV
 843         help
 844           Encrypted Chain IV generator
 845
 846           This IV generator generates an IV based on the encryption of
 847           a sequence number xored with a salt.  This is the default
 848           algorithm for CBC.
 849
 850 config CRYPTO_ESSIV
 851         tristate "Encrypted Salt-Sector IV Generator"
 852         select CRYPTO_AUTHENC
 853         help
 854           Encrypted Salt-Sector IV generator
 855
 856           This IV generator is used in some cases by fscrypt and/or
 857           dm-crypt. It uses the hash of the block encryption key as the
 858           symmetric key for a block encryption pass applied to the input
 859           IV, making low entropy IV sources more suitable for block
 860           encryption.
 861
 862           This driver implements a crypto API template that can be
 863           instantiated either as an skcipher or as an AEAD (depending on the
 864           type of the first template argument), and which defers encryption
 865           and decryption requests to the encapsulated cipher after applying
 866           ESSIV to the input IV. Note that in the AEAD case, it is assumed
 867           that the keys are presented in the same format used by the authenc
 868           template, and that the IV appears at the end of the authenticated
 869           associated data (AAD) region (which is how dm-crypt uses it.)
 870
 871           Note that the use of ESSIV is not recommended for new deployments,
 872           and so this only needs to be enabled when interoperability with
 873           existing encrypted volumes of filesystems is required, or when
 874           building for a particular system that requires it (e.g., when
 875           the SoC in question has accelerated CBC but not XTS, making CBC
 876           combined with ESSIV the only feasible mode for h/w accelerated
 877           block encryption)
 878
 879 endmenu
 880
 881 menu "Hashes, digests, and MACs"
 882
 883 config CRYPTO_BLAKE2B
 884         tristate "BLAKE2b"
 885         select CRYPTO_HASH
 886         help
 887           BLAKE2b cryptographic hash function (RFC 7693)
 888
 889           BLAKE2b is optimized for 64-bit platforms and can produce digests
 890           of any size between 1 and 64 bytes. The keyed hash is also implemented.
 891
 892           This module provides the following algorithms:
 893           - blake2b-160
 894           - blake2b-256
 895           - blake2b-384
 896           - blake2b-512
 897
 898           Used by the btrfs filesystem.
 899
 900           See https://blake2.net for further information.
 901
 902 config CRYPTO_CMAC
 903         tristate "CMAC (Cipher-based MAC)"
 904         select CRYPTO_HASH
 905         select CRYPTO_MANAGER
 906         help
 907           CMAC (Cipher-based Message Authentication Code) authentication
 908           mode (NIST SP800-38B and IETF RFC4493)
 909
 910 config CRYPTO_GHASH
 911         tristate "GHASH"
 912         select CRYPTO_HASH
 913         select CRYPTO_LIB_GF128MUL
 914         help
 915           GCM GHASH function (NIST SP800-38D)
 916
 917 config CRYPTO_HMAC
 918         tristate "HMAC (Keyed-Hash MAC)"
 919         select CRYPTO_HASH
 920         select CRYPTO_MANAGER
 921         help
 922           HMAC (Keyed-Hash Message Authentication Code) (FIPS 198 and
 923           RFC2104)
 924
 925           This is required for IPsec AH (XFRM_AH) and IPsec ESP (XFRM_ESP).
 926
 927 config CRYPTO_MD4
 928         tristate "MD4"
 929         select CRYPTO_HASH
 930         help
 931           MD4 message digest algorithm (RFC1320)
 932
 933 config CRYPTO_MD5
 934         tristate "MD5"
 935         select CRYPTO_HASH
 936         help
 937           MD5 message digest algorithm (RFC1321)
 938
 939 config CRYPTO_MICHAEL_MIC
 940         tristate "Michael MIC"
 941         select CRYPTO_HASH
 942         help
 943           Michael MIC (Message Integrity Code) (IEEE 802.11i)
 944
 945           Defined by the IEEE 802.11i TKIP (Temporal Key Integrity Protocol),
 946           known as WPA (Wif-Fi Protected Access).
 947
 948           This algorithm is required for TKIP, but it should not be used for
 949           other purposes because of the weakness of the algorithm.
 950
 951 config CRYPTO_POLYVAL
 952         tristate
 953         select CRYPTO_HASH
 954         select CRYPTO_LIB_GF128MUL
 955         help
 956           POLYVAL hash function for HCTR2
 957
 958           This is used in HCTR2.  It is not a general-purpose
 959           cryptographic hash function.
 960
 961 config CRYPTO_POLY1305
 962         tristate "Poly1305"
 963         select CRYPTO_HASH
 964         select CRYPTO_LIB_POLY1305_GENERIC
 965         help
 966           Poly1305 authenticator algorithm (RFC7539)
 967
 968           Poly1305 is an authenticator algorithm designed by Daniel J. Bernstein.
 969           It is used for the ChaCha20-Poly1305 AEAD, specified in RFC7539 for use
 970           in IETF protocols. This is the portable C implementation of Poly1305.
 971
 972 config CRYPTO_RMD160
 973         tristate "RIPEMD-160"
 974         select CRYPTO_HASH
 975         help
 976           RIPEMD-160 hash function (ISO/IEC 10118-3)
 977
 978           RIPEMD-160 is a 160-bit cryptographic hash function. It is intended
 979           to be used as a secure replacement for the 128-bit hash functions
 980           MD4, MD5 and its predecessor RIPEMD
 981           (not to be confused with RIPEMD-128).
 982
 983           Its speed is comparable to SHA-1 and there are no known attacks
 984           against RIPEMD-160.
 985
 986           Developed by Hans Dobbertin, Antoon Bosselaers and Bart Preneel.
 987           See https://homes.esat.kuleuven.be/~bosselae/ripemd160.html
 988           for further information.
 989
 990 config CRYPTO_SHA1
 991         tristate "SHA-1"
 992         select CRYPTO_HASH
 993         select CRYPTO_LIB_SHA1
 994         help
 995           SHA-1 secure hash algorithm (FIPS 180, ISO/IEC 10118-3)
 996
 997 config CRYPTO_SHA256
 998         tristate "SHA-224 and SHA-256"
 999         select CRYPTO_HASH
1000         select CRYPTO_LIB_SHA256
1001         help
1002           SHA-224 and SHA-256 secure hash algorithms (FIPS 180, ISO/IEC 10118-3)
1003
1004           This is required for IPsec AH (XFRM_AH) and IPsec ESP (XFRM_ESP).
1005           Used by the btrfs filesystem, Ceph, NFS, and SMB.
1006
1007 config CRYPTO_SHA512
1008         tristate "SHA-384 and SHA-512"
1009         select CRYPTO_HASH
1010         help
1011           SHA-384 and SHA-512 secure hash algorithms (FIPS 180, ISO/IEC 10118-3)
1012
1013 config CRYPTO_SHA3
1014         tristate "SHA-3"
1015         select CRYPTO_HASH
1016         help
1017           SHA-3 secure hash algorithms (FIPS 202, ISO/IEC 10118-3)
1018
1019 config CRYPTO_SM3
1020         tristate
1021
1022 config CRYPTO_SM3_GENERIC
1023         tristate "SM3 (ShangMi 3)"
1024         select CRYPTO_HASH
1025         select CRYPTO_SM3
1026         help
1027           SM3 (ShangMi 3) secure hash function (OSCCA GM/T 0004-2012, ISO/IEC 10118-3)
1028
1029           This is part of the Chinese Commercial Cryptography suite.
1030
1031           References:
1032           http://www.oscca.gov.cn/UpFile/20101222141857786.pdf
1033           https://datatracker.ietf.org/doc/html/draft-shen-sm3-hash
1034
1035 config CRYPTO_STREEBOG
1036         tristate "Streebog"
1037         select CRYPTO_HASH
1038         help
1039           Streebog Hash Function (GOST R 34.11-2012, RFC 6986, ISO/IEC 10118-3)
1040
1041           This is one of the Russian cryptographic standard algorithms (called
1042           GOST algorithms). This setting enables two hash algorithms with
1043           256 and 512 bits output.
1044
1045           References:
1046           https://tc26.ru/upload/iblock/fed/feddbb4d26b685903faa2ba11aea43f6.pdf
1047           https://tools.ietf.org/html/rfc6986
1048
1049 config CRYPTO_VMAC
1050         tristate "VMAC"
1051         select CRYPTO_HASH
1052         select CRYPTO_MANAGER
1053         help
1054           VMAC is a message authentication algorithm designed for
1055           very high speed on 64-bit architectures.
1056
1057           See https://fastcrypto.org/vmac for further information.
1058
1059 config CRYPTO_WP512
1060         tristate "Whirlpool"
1061         select CRYPTO_HASH
1062         help
1063           Whirlpool hash function (ISO/IEC 10118-3)
1064
1065           512, 384 and 256-bit hashes.
1066
1067           Whirlpool-512 is part of the NESSIE cryptographic primitives.
1068
1069           See https://web.archive.org/web/20171129084214/http://www.larc.usp.br/~pbarreto/WhirlpoolPage.html
1070           for further information.
1071
1072 config CRYPTO_XCBC
1073         tristate "XCBC-MAC (Extended Cipher Block Chaining MAC)"
1074         select CRYPTO_HASH
1075         select CRYPTO_MANAGER
1076         help
1077           XCBC-MAC (Extended Cipher Block Chaining Message Authentication
1078           Code) (RFC3566)
1079
1080 config CRYPTO_XXHASH
1081         tristate "xxHash"
1082         select CRYPTO_HASH
1083         select XXHASH
1084         help
1085           xxHash non-cryptographic hash algorithm
1086
1087           Extremely fast, working at speeds close to RAM limits.
1088
1089           Used by the btrfs filesystem.
1090
1091 endmenu
1092
1093 menu "CRCs (cyclic redundancy checks)"
1094
1095 config CRYPTO_CRC32C
1096         tristate "CRC32c"
1097         select CRYPTO_HASH
1098         select CRC32
1099         help
1100           CRC32c CRC algorithm with the iSCSI polynomial (RFC 3385 and RFC 3720)
1101
1102           A 32-bit CRC (cyclic redundancy check) with a polynomial defined
1103           by G. Castagnoli, S. Braeuer and M. Herrman in "Optimization of Cyclic
1104           Redundancy-Check Codes with 24 and 32 Parity Bits", IEEE Transactions
1105           on Communications, Vol. 41, No. 6, June 1993, selected for use with
1106           iSCSI.
1107
1108           Used by btrfs, ext4, jbd2, NVMeoF/TCP, and iSCSI.
1109
1110 config CRYPTO_CRC32
1111         tristate "CRC32"
1112         select CRYPTO_HASH
1113         select CRC32
1114         help
1115           CRC32 CRC algorithm (IEEE 802.3)
1116
1117           Used by RoCEv2 and f2fs.
1118
1119 config CRYPTO_CRCT10DIF
1120         tristate "CRCT10DIF"
1121         select CRYPTO_HASH
1122         help
1123           CRC16 CRC algorithm used for the T10 (SCSI) Data Integrity Field (DIF)
1124
1125           CRC algorithm used by the SCSI Block Commands standard.
1126
1127 config CRYPTO_CRC64_ROCKSOFT
1128         tristate "CRC64 based on Rocksoft Model algorithm"
1129         depends on CRC64
1130         select CRYPTO_HASH
1131         help
1132           CRC64 CRC algorithm based on the Rocksoft Model CRC Algorithm
1133
1134           Used by the NVMe implementation of T10 DIF (BLK_DEV_INTEGRITY)
1135
1136           See https://zlib.net/crc_v3.txt
1137
1138 endmenu
1139
1140 menu "Compression"
1141
1142 config CRYPTO_DEFLATE
1143         tristate "Deflate"
1144         select CRYPTO_ALGAPI
1145         select CRYPTO_ACOMP2
1146         select ZLIB_INFLATE
1147         select ZLIB_DEFLATE
1148         help
1149           Deflate compression algorithm (RFC1951)
1150
1151           Used by IPSec with the IPCOMP protocol (RFC3173, RFC2394)
1152
1153 config CRYPTO_LZO
1154         tristate "LZO"
1155         select CRYPTO_ALGAPI
1156         select CRYPTO_ACOMP2
1157         select LZO_COMPRESS
1158         select LZO_DECOMPRESS
1159         help
1160           LZO compression algorithm
1161
1162           See https://www.oberhumer.com/opensource/lzo/ for further information.
1163
1164 config CRYPTO_842
1165         tristate "842"
1166         select CRYPTO_ALGAPI
1167         select CRYPTO_ACOMP2
1168         select 842_COMPRESS
1169         select 842_DECOMPRESS
1170         help
1171           842 compression algorithm by IBM
1172
1173           See https://github.com/plauth/lib842 for further information.
1174
1175 config CRYPTO_LZ4
1176         tristate "LZ4"
1177         select CRYPTO_ALGAPI
1178         select CRYPTO_ACOMP2
1179         select LZ4_COMPRESS
1180         select LZ4_DECOMPRESS
1181         help
1182           LZ4 compression algorithm
1183
1184           See https://github.com/lz4/lz4 for further information.
1185
1186 config CRYPTO_LZ4HC
1187         tristate "LZ4HC"
1188         select CRYPTO_ALGAPI
1189         select CRYPTO_ACOMP2
1190         select LZ4HC_COMPRESS
1191         select LZ4_DECOMPRESS
1192         help
1193           LZ4 high compression mode algorithm
1194
1195           See https://github.com/lz4/lz4 for further information.
1196
1197 config CRYPTO_ZSTD
1198         tristate "Zstd"
1199         select CRYPTO_ALGAPI
1200         select CRYPTO_ACOMP2
1201         select ZSTD_COMPRESS
1202         select ZSTD_DECOMPRESS
1203         help
1204           zstd compression algorithm
1205
1206           See https://github.com/facebook/zstd for further information.
1207
1208 endmenu
1209
1210 menu "Random number generation"
1211
1212 config CRYPTO_ANSI_CPRNG
1213         tristate "ANSI PRNG (Pseudo Random Number Generator)"
1214         select CRYPTO_AES
1215         select CRYPTO_RNG
1216         help
1217           Pseudo RNG (random number generator) (ANSI X9.31 Appendix A.2.4)
1218
1219           This uses the AES cipher algorithm.
1220
1221           Note that this option must be enabled if CRYPTO_FIPS is selected
1222
1223 menuconfig CRYPTO_DRBG_MENU
1224         tristate "NIST SP800-90A DRBG (Deterministic Random Bit Generator)"
1225         help
1226           DRBG (Deterministic Random Bit Generator) (NIST SP800-90A)
1227
1228           In the following submenu, one or more of the DRBG types must be selected.
1229
1230 if CRYPTO_DRBG_MENU
1231
1232 config CRYPTO_DRBG_HMAC
1233         bool
1234         default y
1235         select CRYPTO_HMAC
1236         select CRYPTO_SHA512
1237
1238 config CRYPTO_DRBG_HASH
1239         bool "Hash_DRBG"
1240         select CRYPTO_SHA256
1241         help
1242           Hash_DRBG variant as defined in NIST SP800-90A.
1243
1244           This uses the SHA-1, SHA-256, SHA-384, or SHA-512 hash algorithms.
1245
1246 config CRYPTO_DRBG_CTR
1247         bool "CTR_DRBG"
1248         select CRYPTO_AES
1249         select CRYPTO_CTR
1250         help
1251           CTR_DRBG variant as defined in NIST SP800-90A.
1252
1253           This uses the AES cipher algorithm with the counter block mode.
1254
1255 config CRYPTO_DRBG
1256         tristate
1257         default CRYPTO_DRBG_MENU
1258         select CRYPTO_RNG
1259         select CRYPTO_JITTERENTROPY
1260
1261 endif   # if CRYPTO_DRBG_MENU
1262
1263 config CRYPTO_JITTERENTROPY
1264         tristate "CPU Jitter Non-Deterministic RNG (Random Number Generator)"
1265         select CRYPTO_RNG
1266         select CRYPTO_SHA3
1267         help
1268           CPU Jitter RNG (Random Number Generator) from the Jitterentropy library
1269
1270           A non-physical non-deterministic ("true") RNG (e.g., an entropy source
1271           compliant with NIST SP800-90B) intended to provide a seed to a
1272           deterministic RNG (e.g., per NIST SP800-90C).
1273           This RNG does not perform any cryptographic whitening of the generated
1274           random numbers.
1275
1276           See https://www.chronox.de/jent/
1277
1278 if CRYPTO_JITTERENTROPY
1279 if CRYPTO_FIPS && EXPERT
1280
1281 choice
1282         prompt "CPU Jitter RNG Memory Size"
1283         default CRYPTO_JITTERENTROPY_MEMSIZE_2
1284         help
1285           The Jitter RNG measures the execution time of memory accesses.
1286           Multiple consecutive memory accesses are performed. If the memory
1287           size fits into a cache (e.g. L1), only the memory access timing
1288           to that cache is measured. The closer the cache is to the CPU
1289           the less variations are measured and thus the less entropy is
1290           obtained. Thus, if the memory size fits into the L1 cache, the
1291           obtained entropy is less than if the memory size fits within
1292           L1 + L2, which in turn is less if the memory fits into
1293           L1 + L2 + L3. Thus, by selecting a different memory size,
1294           the entropy rate produced by the Jitter RNG can be modified.
1295
1296         config CRYPTO_JITTERENTROPY_MEMSIZE_2
1297                 bool "2048 Bytes (default)"
1298
1299         config CRYPTO_JITTERENTROPY_MEMSIZE_128
1300                 bool "128 kBytes"
1301
1302         config CRYPTO_JITTERENTROPY_MEMSIZE_1024
1303                 bool "1024 kBytes"
1304
1305         config CRYPTO_JITTERENTROPY_MEMSIZE_8192
1306                 bool "8192 kBytes"
1307 endchoice
1308
1309 config CRYPTO_JITTERENTROPY_MEMORY_BLOCKS
1310         int
1311         default 64 if CRYPTO_JITTERENTROPY_MEMSIZE_2
1312         default 512 if CRYPTO_JITTERENTROPY_MEMSIZE_128
1313         default 1024 if CRYPTO_JITTERENTROPY_MEMSIZE_1024
1314         default 4096 if CRYPTO_JITTERENTROPY_MEMSIZE_8192
1315
1316 config CRYPTO_JITTERENTROPY_MEMORY_BLOCKSIZE
1317         int
1318         default 32 if CRYPTO_JITTERENTROPY_MEMSIZE_2
1319         default 256 if CRYPTO_JITTERENTROPY_MEMSIZE_128
1320         default 1024 if CRYPTO_JITTERENTROPY_MEMSIZE_1024
1321         default 2048 if CRYPTO_JITTERENTROPY_MEMSIZE_8192
1322
1323 config CRYPTO_JITTERENTROPY_OSR
1324         int "CPU Jitter RNG Oversampling Rate"
1325         range 1 15
1326         default 1
1327         help
1328           The Jitter RNG allows the specification of an oversampling rate (OSR).
1329           The Jitter RNG operation requires a fixed amount of timing
1330           measurements to produce one output block of random numbers. The
1331           OSR value is multiplied with the amount of timing measurements to
1332           generate one output block. Thus, the timing measurement is oversampled
1333           by the OSR factor. The oversampling allows the Jitter RNG to operate
1334           on hardware whose timers deliver limited amount of entropy (e.g.
1335           the timer is coarse) by setting the OSR to a higher value. The
1336           trade-off, however, is that the Jitter RNG now requires more time
1337           to generate random numbers.
1338
1339 config CRYPTO_JITTERENTROPY_TESTINTERFACE
1340         bool "CPU Jitter RNG Test Interface"
1341         help
1342           The test interface allows a privileged process to capture
1343           the raw unconditioned high resolution time stamp noise that
1344           is collected by the Jitter RNG for statistical analysis. As
1345           this data is used at the same time to generate random bits,
1346           the Jitter RNG operates in an insecure mode as long as the
1347           recording is enabled. This interface therefore is only
1348           intended for testing purposes and is not suitable for
1349           production systems.
1350
1351           The raw noise data can be obtained using the jent_raw_hires
1352           debugfs file. Using the option
1353           jitterentropy_testing.boot_raw_hires_test=1 the raw noise of
1354           the first 1000 entropy events since boot can be sampled.
1355
1356           If unsure, select N.
1357
1358 endif   # if CRYPTO_FIPS && EXPERT
1359
1360 if !(CRYPTO_FIPS && EXPERT)
1361
1362 config CRYPTO_JITTERENTROPY_MEMORY_BLOCKS
1363         int
1364         default 64
1365
1366 config CRYPTO_JITTERENTROPY_MEMORY_BLOCKSIZE
1367         int
1368         default 32
1369
1370 config CRYPTO_JITTERENTROPY_OSR
1371         int
1372         default 1
1373
1374 config CRYPTO_JITTERENTROPY_TESTINTERFACE
1375         bool
1376
1377 endif   # if !(CRYPTO_FIPS && EXPERT)
1378 endif   # if CRYPTO_JITTERENTROPY
1379
1380 config CRYPTO_KDF800108_CTR
1381         tristate
1382         select CRYPTO_HMAC
1383         select CRYPTO_SHA256
1384
1385 endmenu
1386 menu "Userspace interface"
1387
1388 config CRYPTO_USER_API
1389         tristate
1390
1391 config CRYPTO_USER_API_HASH
1392         tristate "Hash algorithms"
1393         depends on NET
1394         select CRYPTO_HASH
1395         select CRYPTO_USER_API
1396         help
1397           Enable the userspace interface for hash algorithms.
1398
1399           See Documentation/crypto/userspace-if.rst and
1400           https://www.chronox.de/libkcapi/html/index.html
1401
1402 config CRYPTO_USER_API_SKCIPHER
1403         tristate "Symmetric key cipher algorithms"
1404         depends on NET
1405         select CRYPTO_SKCIPHER
1406         select CRYPTO_USER_API
1407         help
1408           Enable the userspace interface for symmetric key cipher algorithms.
1409
1410           See Documentation/crypto/userspace-if.rst and
1411           https://www.chronox.de/libkcapi/html/index.html
1412
1413 config CRYPTO_USER_API_RNG
1414         tristate "RNG (random number generator) algorithms"
1415         depends on NET
1416         select CRYPTO_RNG
1417         select CRYPTO_USER_API
1418         help
1419           Enable the userspace interface for RNG (random number generator)
1420           algorithms.
1421
1422           See Documentation/crypto/userspace-if.rst and
1423           https://www.chronox.de/libkcapi/html/index.html
1424
1425 config CRYPTO_USER_API_RNG_CAVP
1426         bool "Enable CAVP testing of DRBG"
1427         depends on CRYPTO_USER_API_RNG && CRYPTO_DRBG
1428         help
1429           Enable extra APIs in the userspace interface for NIST CAVP
1430           (Cryptographic Algorithm Validation Program) testing:
1431           - resetting DRBG entropy
1432           - providing Additional Data
1433
1434           This should only be enabled for CAVP testing. You should say
1435           no unless you know what this is.
1436
1437 config CRYPTO_USER_API_AEAD
1438         tristate "AEAD cipher algorithms"
1439         depends on NET
1440         select CRYPTO_AEAD
1441         select CRYPTO_SKCIPHER
1442         select CRYPTO_NULL
1443         select CRYPTO_USER_API
1444         help
1445           Enable the userspace interface for AEAD cipher algorithms.
1446
1447           See Documentation/crypto/userspace-if.rst and
1448           https://www.chronox.de/libkcapi/html/index.html
1449
1450 config CRYPTO_USER_API_ENABLE_OBSOLETE
1451         bool "Obsolete cryptographic algorithms"
1452         depends on CRYPTO_USER_API
1453         default y
1454         help
1455           Allow obsolete cryptographic algorithms to be selected that have
1456           already been phased out from internal use by the kernel, and are
1457           only useful for userspace clients that still rely on them.
1458
1459 config CRYPTO_STATS
1460         bool "Crypto usage statistics"
1461         depends on CRYPTO_USER
1462         help
1463           Enable the gathering of crypto stats.
1464
1465           Enabling this option reduces the performance of the crypto API.  It
1466           should only be enabled when there is actually a use case for it.
1467
1468           This collects data sizes, numbers of requests, and numbers
1469           of errors processed by:
1470           - AEAD ciphers (encrypt, decrypt)
1471           - asymmetric key ciphers (encrypt, decrypt, verify, sign)
1472           - symmetric key ciphers (encrypt, decrypt)
1473           - compression algorithms (compress, decompress)
1474           - hash algorithms (hash)
1475           - key-agreement protocol primitives (setsecret, generate
1476             public key, compute shared secret)
1477           - RNG (generate, seed)
1478
1479 endmenu
1480
1481 config CRYPTO_HASH_INFO
1482         bool
1483
1484 if !KMSAN # avoid false positives from assembly
1485 if ARM
1486 source "arch/arm/crypto/Kconfig"
1487 endif
1488 if ARM64
1489 source "arch/arm64/crypto/Kconfig"
1490 endif
1491 if LOONGARCH
1492 source "arch/loongarch/crypto/Kconfig"
1493 endif
1494 if MIPS
1495 source "arch/mips/crypto/Kconfig"
1496 endif
1497 if PPC
1498 source "arch/powerpc/crypto/Kconfig"
1499 endif
1500 if RISCV
1501 source "arch/riscv/crypto/Kconfig"
1502 endif
1503 if S390
1504 source "arch/s390/crypto/Kconfig"
1505 endif
1506 if SPARC
1507 source "arch/sparc/crypto/Kconfig"
1508 endif
1509 if X86
1510 source "arch/x86/crypto/Kconfig"
1511 endif
1512 endif
1513
1514 source "drivers/crypto/Kconfig"
1515 source "crypto/asymmetric_keys/Kconfig"
1516 source "certs/Kconfig"
1517
1518 endif   # if CRYPTO