# 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_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 select CRYPTO_ECB 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 CRYPTO_SIG 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_SIG select ASN1 help ECDSA (Elliptic Curve Digital Signature Algorithm) (FIPS 186, ISO/IEC 14888-3) using curves P-192, P-256, P-384 and P-521 Only signature verification is implemented. config CRYPTO_ECRDSA tristate "EC-RDSA (Elliptic Curve Russian Digital Signature Algorithm)" select CRYPTO_ECC select CRYPTO_SIG 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_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_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_SKCIPHER2 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_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) config CRYPTO_HMAC tristate "HMAC (Keyed-Hash MAC)" select CRYPTO_HASH select CRYPTO_MANAGER help HMAC (Keyed-Hash Message Authentication Code) (FIPS 198 and RFC2104) This is required for IPsec AH (XFRM_AH) and IPsec ESP (XFRM_ESP). config CRYPTO_MD4 tristate "MD4" select CRYPTO_HASH help MD4 message digest algorithm (RFC1320) config CRYPTO_MD5 tristate "MD5" select CRYPTO_HASH help MD5 message digest algorithm (RFC1321) config CRYPTO_MICHAEL_MIC tristate "Michael MIC" select CRYPTO_HASH help Michael MIC (Message Integrity Code) (IEEE 802.11i) Defined by the IEEE 802.11i TKIP (Temporal Key Integrity Protocol), known as WPA (Wif-Fi Protected Access). This algorithm is required for TKIP, but it should not be used for other purposes because of the weakness of the algorithm. config CRYPTO_POLYVAL tristate select CRYPTO_HASH select CRYPTO_LIB_GF128MUL help POLYVAL hash function for HCTR2 This is used in HCTR2. It is not a general-purpose cryptographic hash function. config CRYPTO_POLY1305 tristate "Poly1305" select CRYPTO_HASH select CRYPTO_LIB_POLY1305_GENERIC help Poly1305 authenticator algorithm (RFC7539) Poly1305 is an authenticator algorithm designed by Daniel J. Bernstein. It is used for the ChaCha20-Poly1305 AEAD, specified in RFC7539 for use in IETF protocols. This is the portable C implementation of Poly1305. config CRYPTO_RMD160 tristate "RIPEMD-160" select CRYPTO_HASH help RIPEMD-160 hash function (ISO/IEC 10118-3) RIPEMD-160 is a 160-bit cryptographic hash function. It is intended to be used as a secure replacement for the 128-bit hash functions MD4, MD5 and its predecessor RIPEMD (not to be confused with RIPEMD-128). Its speed is comparable to SHA-1 and there are no known attacks against RIPEMD-160. Developed by Hans Dobbertin, Antoon Bosselaers and Bart Preneel. See https://homes.esat.kuleuven.be/~bosselae/ripemd160.html for further information. config CRYPTO_SHA1 tristate "SHA-1" select CRYPTO_HASH select CRYPTO_LIB_SHA1 help SHA-1 secure hash algorithm (FIPS 180, ISO/IEC 10118-3) config CRYPTO_SHA256 tristate "SHA-224 and SHA-256" select CRYPTO_HASH select CRYPTO_LIB_SHA256 help SHA-224 and SHA-256 secure hash algorithms (FIPS 180, ISO/IEC 10118-3) This is required for IPsec AH (XFRM_AH) and IPsec ESP (XFRM_ESP). Used by the btrfs filesystem, Ceph, NFS, and SMB. config CRYPTO_SHA512 tristate "SHA-384 and SHA-512" select CRYPTO_HASH help SHA-384 and SHA-512 secure hash algorithms (FIPS 180, ISO/IEC 10118-3) config CRYPTO_SHA3 tristate "SHA-3" select CRYPTO_HASH help SHA-3 secure hash algorithms (FIPS 202, ISO/IEC 10118-3) config CRYPTO_SM3 tristate config CRYPTO_SM3_GENERIC tristate "SM3 (ShangMi 3)" select CRYPTO_HASH select CRYPTO_SM3 help SM3 (ShangMi 3) secure hash function (OSCCA GM/T 0004-2012, ISO/IEC 10118-3) This is part of the Chinese Commercial Cryptography suite. References: http://www.oscca.gov.cn/UpFile/20101222141857786.pdf https://datatracker.ietf.org/doc/html/draft-shen-sm3-hash config CRYPTO_STREEBOG tristate "Streebog" select CRYPTO_HASH help Streebog Hash Function (GOST R 34.11-2012, RFC 6986, ISO/IEC 10118-3) This is one of the Russian cryptographic standard algorithms (called GOST algorithms). This setting enables two hash algorithms with 256 and 512 bits output. References: https://tc26.ru/upload/iblock/fed/feddbb4d26b685903faa2ba11aea43f6.pdf https://tools.ietf.org/html/rfc6986 config CRYPTO_VMAC tristate "VMAC" select CRYPTO_HASH select CRYPTO_MANAGER help VMAC is a message authentication algorithm designed for very high speed on 64-bit architectures. See https://fastcrypto.org/vmac for further information. config CRYPTO_WP512 tristate "Whirlpool" select CRYPTO_HASH help Whirlpool hash function (ISO/IEC 10118-3) 512, 384 and 256-bit hashes. Whirlpool-512 is part of the NESSIE cryptographic primitives. See https://web.archive.org/web/20171129084214/http://www.larc.usp.br/~pbarreto/WhirlpoolPage.html for further information. config CRYPTO_XCBC tristate "XCBC-MAC (Extended Cipher Block Chaining MAC)" select CRYPTO_HASH select CRYPTO_MANAGER help XCBC-MAC (Extended Cipher Block Chaining Message Authentication Code) (RFC3566) config CRYPTO_XXHASH tristate "xxHash" select CRYPTO_HASH select XXHASH help xxHash non-cryptographic hash algorithm Extremely fast, working at speeds close to RAM limits. Used by the btrfs filesystem. endmenu menu "CRCs (cyclic redundancy checks)" config CRYPTO_CRC32C tristate "CRC32c" select CRYPTO_HASH select CRC32 help CRC32c CRC algorithm with the iSCSI polynomial (RFC 3385 and RFC 3720) A 32-bit CRC (cyclic redundancy check) with a polynomial defined by G. Castagnoli, S. Braeuer and M. Herrman in "Optimization of Cyclic Redundancy-Check Codes with 24 and 32 Parity Bits", IEEE Transactions on Communications, Vol. 41, No. 6, June 1993, selected for use with iSCSI. Used by btrfs, ext4, jbd2, NVMeoF/TCP, and iSCSI. config CRYPTO_CRC32 tristate "CRC32" select CRYPTO_HASH select CRC32 help CRC32 CRC algorithm (IEEE 802.3) Used by RoCEv2 and f2fs. config CRYPTO_CRCT10DIF tristate "CRCT10DIF" select CRYPTO_HASH help CRC16 CRC algorithm used for the T10 (SCSI) Data Integrity Field (DIF) CRC algorithm used by the SCSI Block Commands standard. config CRYPTO_CRC64_ROCKSOFT tristate "CRC64 based on Rocksoft Model algorithm" depends on CRC64 select CRYPTO_HASH help CRC64 CRC algorithm based on the Rocksoft Model CRC Algorithm Used by the NVMe implementation of T10 DIF (BLK_DEV_INTEGRITY) See https://zlib.net/crc_v3.txt endmenu menu "Compression" config CRYPTO_DEFLATE tristate "Deflate" select CRYPTO_ALGAPI select CRYPTO_ACOMP2 select ZLIB_INFLATE select ZLIB_DEFLATE help Deflate compression algorithm (RFC1951) Used by IPSec with the IPCOMP protocol (RFC3173, RFC2394) config CRYPTO_LZO tristate "LZO" select CRYPTO_ALGAPI select CRYPTO_ACOMP2 select LZO_COMPRESS select LZO_DECOMPRESS help LZO compression algorithm See https://www.oberhumer.com/opensource/lzo/ for further information. config CRYPTO_842 tristate "842" select CRYPTO_ALGAPI select CRYPTO_ACOMP2 select 842_COMPRESS select 842_DECOMPRESS help 842 compression algorithm by IBM See https://github.com/plauth/lib842 for further information. config CRYPTO_LZ4 tristate "LZ4" select CRYPTO_ALGAPI select CRYPTO_ACOMP2 select LZ4_COMPRESS select LZ4_DECOMPRESS help LZ4 compression algorithm See https://github.com/lz4/lz4 for further information. config CRYPTO_LZ4HC tristate "LZ4HC" select CRYPTO_ALGAPI select CRYPTO_ACOMP2 select LZ4HC_COMPRESS select LZ4_DECOMPRESS help LZ4 high compression mode algorithm See https://github.com/lz4/lz4 for further information. config CRYPTO_ZSTD tristate "Zstd" select CRYPTO_ALGAPI select CRYPTO_ACOMP2 select ZSTD_COMPRESS select ZSTD_DECOMPRESS help zstd compression algorithm See https://github.com/facebook/zstd for further information. endmenu menu "Random number generation" config CRYPTO_ANSI_CPRNG tristate "ANSI PRNG (Pseudo Random Number Generator)" select CRYPTO_AES select CRYPTO_RNG help Pseudo RNG (random number generator) (ANSI X9.31 Appendix A.2.4) This uses the AES cipher algorithm. Note that this option must be enabled if CRYPTO_FIPS is selected menuconfig CRYPTO_DRBG_MENU tristate "NIST SP800-90A DRBG (Deterministic Random Bit Generator)" help DRBG (Deterministic Random Bit Generator) (NIST SP800-90A) In the following submenu, one or more of the DRBG types must be selected. if CRYPTO_DRBG_MENU config CRYPTO_DRBG_HMAC bool default y select CRYPTO_HMAC select CRYPTO_SHA512 config CRYPTO_DRBG_HASH bool "Hash_DRBG" select CRYPTO_SHA256 help Hash_DRBG variant as defined in NIST SP800-90A. This uses the SHA-1, SHA-256, SHA-384, or SHA-512 hash algorithms. config CRYPTO_DRBG_CTR bool "CTR_DRBG" select CRYPTO_AES select CRYPTO_CTR help CTR_DRBG variant as defined in NIST SP800-90A. This uses the AES cipher algorithm with the counter block mode. config CRYPTO_DRBG tristate default CRYPTO_DRBG_MENU select CRYPTO_RNG select CRYPTO_JITTERENTROPY endif # if CRYPTO_DRBG_MENU config CRYPTO_JITTERENTROPY tristate "CPU Jitter Non-Deterministic RNG (Random Number Generator)" select CRYPTO_RNG select CRYPTO_SHA3 help CPU Jitter RNG (Random Number Generator) from the Jitterentropy library A non-physical non-deterministic ("true") RNG (e.g., an entropy source compliant with NIST SP800-90B) intended to provide a seed to a deterministic RNG (e.g., per NIST SP800-90C). This RNG does not perform any cryptographic whitening of the generated random numbers. See https://www.chronox.de/jent/ if CRYPTO_JITTERENTROPY if CRYPTO_FIPS && EXPERT choice prompt "CPU Jitter RNG Memory Size" default CRYPTO_JITTERENTROPY_MEMSIZE_2 help The Jitter RNG measures the execution time of memory accesses. Multiple consecutive memory accesses are performed. If the memory size fits into a cache (e.g. L1), only the memory access timing to that cache is measured. The closer the cache is to the CPU the less variations are measured and thus the less entropy is obtained. Thus, if the memory size fits into the L1 cache, the obtained entropy is less than if the memory size fits within L1 + L2, which in turn is less if the memory fits into L1 + L2 + L3. Thus, by selecting a different memory size, the entropy rate produced by the Jitter RNG can be modified. config CRYPTO_JITTERENTROPY_MEMSIZE_2 bool "2048 Bytes (default)" config CRYPTO_JITTERENTROPY_MEMSIZE_128 bool "128 kBytes" config CRYPTO_JITTERENTROPY_MEMSIZE_1024 bool "1024 kBytes" config CRYPTO_JITTERENTROPY_MEMSIZE_8192 bool "8192 kBytes" endchoice config CRYPTO_JITTERENTROPY_MEMORY_BLOCKS int default 64 if CRYPTO_JITTERENTROPY_MEMSIZE_2 default 512 if CRYPTO_JITTERENTROPY_MEMSIZE_128 default 1024 if CRYPTO_JITTERENTROPY_MEMSIZE_1024 default 4096 if CRYPTO_JITTERENTROPY_MEMSIZE_8192 config CRYPTO_JITTERENTROPY_MEMORY_BLOCKSIZE int default 32 if CRYPTO_JITTERENTROPY_MEMSIZE_2 default 256 if CRYPTO_JITTERENTROPY_MEMSIZE_128 default 1024 if CRYPTO_JITTERENTROPY_MEMSIZE_1024 default 2048 if CRYPTO_JITTERENTROPY_MEMSIZE_8192 config CRYPTO_JITTERENTROPY_OSR int "CPU Jitter RNG Oversampling Rate" range 1 15 default 3 help The Jitter RNG allows the specification of an oversampling rate (OSR). The Jitter RNG operation requires a fixed amount of timing measurements to produce one output block of random numbers. The OSR value is multiplied with the amount of timing measurements to generate one output block. Thus, the timing measurement is oversampled by the OSR factor. The oversampling allows the Jitter RNG to operate on hardware whose timers deliver limited amount of entropy (e.g. the timer is coarse) by setting the OSR to a higher value. The trade-off, however, is that the Jitter RNG now requires more time to generate random numbers. config CRYPTO_JITTERENTROPY_TESTINTERFACE bool "CPU Jitter RNG Test Interface" help The test interface allows a privileged process to capture the raw unconditioned high resolution time stamp noise that is collected by the Jitter RNG for statistical analysis. As this data is used at the same time to generate random bits, the Jitter RNG operates in an insecure mode as long as the recording is enabled. This interface therefore is only intended for testing purposes and is not suitable for production systems. The raw noise data can be obtained using the jent_raw_hires debugfs file. Using the option jitterentropy_testing.boot_raw_hires_test=1 the raw noise of the first 1000 entropy events since boot can be sampled. If unsure, select N. endif # if CRYPTO_FIPS && EXPERT if !(CRYPTO_FIPS && EXPERT) config CRYPTO_JITTERENTROPY_MEMORY_BLOCKS int default 64 config CRYPTO_JITTERENTROPY_MEMORY_BLOCKSIZE int default 32 config CRYPTO_JITTERENTROPY_OSR int default 1 config CRYPTO_JITTERENTROPY_TESTINTERFACE bool endif # if !(CRYPTO_FIPS && EXPERT) endif # if CRYPTO_JITTERENTROPY config CRYPTO_KDF800108_CTR tristate select CRYPTO_HMAC select CRYPTO_SHA256 endmenu menu "Userspace interface" config CRYPTO_USER_API tristate config CRYPTO_USER_API_HASH tristate "Hash algorithms" depends on NET select CRYPTO_HASH select CRYPTO_USER_API help Enable the userspace interface for hash algorithms. See Documentation/crypto/userspace-if.rst and https://www.chronox.de/libkcapi/html/index.html config CRYPTO_USER_API_SKCIPHER tristate "Symmetric key cipher algorithms" depends on NET select CRYPTO_SKCIPHER select CRYPTO_USER_API help Enable the userspace interface for symmetric key cipher algorithms. See Documentation/crypto/userspace-if.rst and https://www.chronox.de/libkcapi/html/index.html config CRYPTO_USER_API_RNG tristate "RNG (random number generator) algorithms" depends on NET select CRYPTO_RNG select CRYPTO_USER_API help Enable the userspace interface for RNG (random number generator) algorithms. See Documentation/crypto/userspace-if.rst and https://www.chronox.de/libkcapi/html/index.html config CRYPTO_USER_API_RNG_CAVP bool "Enable CAVP testing of DRBG" depends on CRYPTO_USER_API_RNG && CRYPTO_DRBG help Enable extra APIs in the userspace interface for NIST CAVP (Cryptographic Algorithm Validation Program) testing: - resetting DRBG entropy - providing Additional Data This should only be enabled for CAVP testing. You should say no unless you know what this is. config CRYPTO_USER_API_AEAD tristate "AEAD cipher algorithms" depends on NET select CRYPTO_AEAD select CRYPTO_SKCIPHER select CRYPTO_NULL select CRYPTO_USER_API help Enable the userspace interface for AEAD cipher algorithms. See Documentation/crypto/userspace-if.rst and https://www.chronox.de/libkcapi/html/index.html config CRYPTO_USER_API_ENABLE_OBSOLETE bool "Obsolete cryptographic algorithms" depends on CRYPTO_USER_API default y help Allow obsolete cryptographic algorithms to be selected that have already been phased out from internal use by the kernel, and are only useful for userspace clients that still rely on them. endmenu config CRYPTO_HASH_INFO bool if !KMSAN # avoid false positives from assembly if ARM source "arch/arm/crypto/Kconfig" endif if ARM64 source "arch/arm64/crypto/Kconfig" endif if LOONGARCH source "arch/loongarch/crypto/Kconfig" endif if MIPS source "arch/mips/crypto/Kconfig" endif if PPC source "arch/powerpc/crypto/Kconfig" endif if RISCV source "arch/riscv/crypto/Kconfig" endif if S390 source "arch/s390/crypto/Kconfig" endif if SPARC source "arch/sparc/crypto/Kconfig" endif if X86 source "arch/x86/crypto/Kconfig" endif endif source "drivers/crypto/Kconfig" source "crypto/asymmetric_keys/Kconfig" source "certs/Kconfig" endif # if CRYPTO