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# Generic algorithms support

#

config XOR_BLOCKS

        tristate

#

# async_tx api: hardware offloaded memory transfer/transform support

#

source "crypto/async_tx/Kconfig"

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# Cryptographic API Configuration

#

menuconfig CRYPTO

        bool "Cryptographic API"

        help

          This option provides the core Cryptographic API.

if CRYPTO

config CRYPTO_ALGAPI

        tristate

        help

          This option provides the API for cryptographic algorithms.

config CRYPTO_ABLKCIPHER

        tristate

        select CRYPTO_BLKCIPHER

config CRYPTO_AEAD

        tristate

        select CRYPTO_ALGAPI

config CRYPTO_BLKCIPHER

        tristate

        select CRYPTO_ALGAPI

config CRYPTO_HASH

        tristate

        select CRYPTO_ALGAPI

config CRYPTO_MANAGER

        tristate "Cryptographic algorithm manager"

        select CRYPTO_ALGAPI

        help

          Create default cryptographic template instantiations such as

          cbc(aes).

config CRYPTO_HMAC

        tristate "HMAC support"

        select CRYPTO_HASH

        select CRYPTO_MANAGER

        help

          HMAC: Keyed-Hashing for Message Authentication (RFC2104).

          This is required for IPSec.

config CRYPTO_XCBC

        tristate "XCBC support"

        depends on EXPERIMENTAL

        select CRYPTO_HASH

        select CRYPTO_MANAGER

        help

          XCBC: Keyed-Hashing with encryption algorithm

                http://www.ietf.org/rfc/rfc3566.txt

                http://csrc.nist.gov/encryption/modes/proposedmodes/

                 xcbc-mac/xcbc-mac-spec.pdf

config CRYPTO_NULL

        tristate "Null algorithms"

        select CRYPTO_ALGAPI

        help

          These are 'Null' algorithms, used by IPsec, which do nothing.

config CRYPTO_MD4

        tristate "MD4 digest algorithm"

        select CRYPTO_ALGAPI

        help

          MD4 message digest algorithm (RFC1320).

config CRYPTO_MD5

        tristate "MD5 digest algorithm"

        select CRYPTO_ALGAPI

        help

          MD5 message digest algorithm (RFC1321).

config CRYPTO_SHA1

        tristate "SHA1 digest algorithm"

        select CRYPTO_ALGAPI

        help

          SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).

config CRYPTO_SHA256

        tristate "SHA256 digest algorithm"

        select CRYPTO_ALGAPI

        help

          SHA256 secure hash standard (DFIPS 180-2).

          This version of SHA implements a 256 bit hash with 128 bits of

          security against collision attacks.

config CRYPTO_SHA512

        tristate "SHA384 and SHA512 digest algorithms"

        select CRYPTO_ALGAPI

        help

          SHA512 secure hash standard (DFIPS 180-2).

          This version of SHA implements a 512 bit hash with 256 bits of

          security against collision attacks.

          This code also includes SHA-384, a 384 bit hash with 192 bits

          of security against collision attacks.

config CRYPTO_WP512

        tristate "Whirlpool digest algorithms"

        select CRYPTO_ALGAPI

        help

          Whirlpool hash algorithm 512, 384 and 256-bit hashes

          Whirlpool-512 is part of the NESSIE cryptographic primitives.

          Whirlpool will be part of the ISO/IEC 10118-3:2003(E) standard

          See also:

config CRYPTO_TGR192

        tristate "Tiger digest algorithms"

        select CRYPTO_ALGAPI

        help

          Tiger hash algorithm 192, 160 and 128-bit hashes

          Tiger is a hash function optimized for 64-bit processors while

          still having decent performance on 32-bit processors.

          Tiger was developed by Ross Anderson and Eli Biham.

          See also:

          .

config CRYPTO_GF128MUL

        tristate "GF(2^128) multiplication functions (EXPERIMENTAL)"

        depends on EXPERIMENTAL

        help

          Efficient table driven implementation of multiplications in the

          field GF(2^128).  This is needed by some cypher modes. This

          option will be selected automatically if you select such a

          cipher mode.  Only select this option by hand if you expect to load

          an external module that requires these functions.

config CRYPTO_ECB

        tristate "ECB support"

        select CRYPTO_BLKCIPHER

        select CRYPTO_MANAGER

        help

          ECB: Electronic CodeBook mode

          This is the simplest block cipher algorithm.  It simply encrypts

          the input block by block.

config CRYPTO_CBC

        tristate "CBC support"

        select CRYPTO_BLKCIPHER

        select CRYPTO_MANAGER

        help

          CBC: Cipher Block Chaining mode

          This block cipher algorithm is required for IPSec.

config CRYPTO_PCBC

        tristate "PCBC support"

        select CRYPTO_BLKCIPHER

        select CRYPTO_MANAGER

        help

          PCBC: Propagating Cipher Block Chaining mode

          This block cipher algorithm is required for RxRPC.

config CRYPTO_LRW

        tristate "LRW support (EXPERIMENTAL)"

        depends on EXPERIMENTAL

        select CRYPTO_BLKCIPHER

        select CRYPTO_MANAGER

        select CRYPTO_GF128MUL

        help

          LRW: Liskov Rivest Wagner, 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.

config CRYPTO_XTS

        tristate "XTS support (EXPERIMENTAL)"

        depends on EXPERIMENTAL

        select CRYPTO_BLKCIPHER

        select CRYPTO_MANAGER

        select CRYPTO_GF128MUL

        help

          XTS: IEEE1619/D16 narrow block cipher 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_CRYPTD

        tristate "Software async crypto daemon"

        select CRYPTO_ABLKCIPHER

        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_DES

        tristate "DES and Triple DES EDE cipher algorithms"

        select CRYPTO_ALGAPI

        help

          DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).

config CRYPTO_FCRYPT

        tristate "FCrypt cipher algorithm"

        select CRYPTO_ALGAPI

        select CRYPTO_BLKCIPHER

        help

          FCrypt algorithm used by RxRPC.

config CRYPTO_BLOWFISH

        tristate "Blowfish cipher algorithm"

        select CRYPTO_ALGAPI

        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 also:

config CRYPTO_TWOFISH

        tristate "Twofish cipher algorithm"

        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 also:

config CRYPTO_TWOFISH_COMMON

        tristate

        help

          Common parts of the Twofish cipher algorithm shared by the

          generic c and the assembler implementations.

config CRYPTO_TWOFISH_586

        tristate "Twofish cipher algorithms (i586)"

        depends on (X86 || UML_X86) && !64BIT

        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 also:

config CRYPTO_TWOFISH_X86_64

        tristate "Twofish cipher algorithm (x86_64)"

        depends on (X86 || UML_X86) && 64BIT

        select CRYPTO_ALGAPI

        select CRYPTO_TWOFISH_COMMON

        help

          Twofish cipher algorithm (x86_64).

          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 also:

config CRYPTO_SERPENT

        tristate "Serpent cipher algorithm"

        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.  Also includes the 'Tnepres' algorithm, a reversed

          variant of Serpent for compatibility with old kerneli.org code.

          See also:

config CRYPTO_AES

        tristate "AES cipher algorithms"

        select CRYPTO_ALGAPI

        help

          AES cipher algorithms (FIPS-197). AES uses the Rijndael

          algorithm.

          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

          See  for more information.

config CRYPTO_AES_586

        tristate "AES cipher algorithms (i586)"

        depends on (X86 || UML_X86) && !64BIT

        select CRYPTO_ALGAPI

        help

          AES cipher algorithms (FIPS-197). AES uses the Rijndael

          algorithm.

          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

          See  for more information.

config CRYPTO_AES_X86_64

        tristate "AES cipher algorithms (x86_64)"

        depends on (X86 || UML_X86) && 64BIT

        select CRYPTO_ALGAPI

        help

          AES cipher algorithms (FIPS-197). AES uses the Rijndael

          algorithm.

          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

          See  for more information.

config CRYPTO_CAST5

        tristate "CAST5 (CAST-128) cipher algorithm"

        select CRYPTO_ALGAPI

        help

          The CAST5 encryption algorithm (synonymous with CAST-128) is

          described in RFC2144.

config CRYPTO_CAST6

        tristate "CAST6 (CAST-256) cipher algorithm"

        select CRYPTO_ALGAPI

        help

          The CAST6 encryption algorithm (synonymous with CAST-256) is

          described in RFC2612.

config CRYPTO_TEA

        tristate "TEA, XTEA and XETA cipher algorithms"

        select CRYPTO_ALGAPI

        help

          TEA cipher algorithm.

          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_ARC4

        tristate "ARC4 cipher algorithm"

        select CRYPTO_ALGAPI

        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_KHAZAD

        tristate "Khazad cipher algorithm"

        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 also:

config CRYPTO_ANUBIS

        tristate "Anubis cipher algorithm"

        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 also:

config CRYPTO_SEED

        tristate "SEED cipher algorithm"

        select CRYPTO_ALGAPI

        help

          SEED cipher algorithm (RFC4269).

          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 also:

config CRYPTO_DEFLATE

        tristate "Deflate compression algorithm"

        select CRYPTO_ALGAPI

        select ZLIB_INFLATE

        select ZLIB_DEFLATE

        help

          This is the Deflate algorithm (RFC1951), specified for use in

          IPSec with the IPCOMP protocol (RFC3173, RFC2394).

          You will most probably want this if using IPSec.

config CRYPTO_MICHAEL_MIC

        tristate "Michael MIC keyed digest algorithm"

        select CRYPTO_ALGAPI

        help

          Michael MIC is used for message integrity protection in TKIP

          (IEEE 802.11i). This algorithm is required for TKIP, but it

          should not be used for other purposes because of the weakness

          of the algorithm.

config CRYPTO_CRC32C

        tristate "CRC32c CRC algorithm"

        select CRYPTO_ALGAPI

        select LIBCRC32C

        help

          Castagnoli, et al Cyclic Redundancy-Check Algorithm.  Used

          by iSCSI for header and data digests and by others.

          See Castagnoli93.  This implementation uses lib/libcrc32c.

          Module will be crc32c.

config CRYPTO_CAMELLIA

        tristate "Camellia cipher algorithms"

        depends on CRYPTO

        select CRYPTO_ALGAPI

        help

          Camellia cipher algorithms module.

          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 also:

config CRYPTO_TEST

        tristate "Testing module"

        depends on m

        select CRYPTO_ALGAPI

        help

          Quick & dirty crypto test module.

config CRYPTO_AUTHENC

        tristate "Authenc support"

        select CRYPTO_AEAD

        select CRYPTO_MANAGER

        help

          Authenc: Combined mode wrapper for IPsec.

          This is required for IPSec.

source "drivers/crypto/Kconfig"

endif   # if CRYPTO