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Kconfig
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#
# Cryptographic API Configuration
#
menu "Cryptographic options"
config CRYPTO
bool "Cryptographic API"
help
This option provides the core Cryptographic API.
config CRYPTO_HMAC
bool "HMAC support"
depends on CRYPTO
help
HMAC: Keyed-Hashing for Message Authentication (RFC2104).
This is required for IPSec.
config CRYPTO_NULL
tristate "Null algorithms"
depends on CRYPTO
help
These are 'Null' algorithms, used by IPsec, which do nothing.
config CRYPTO_MD4
tristate "MD4 digest algorithm"
depends on CRYPTO
help
MD4 message digest algorithm (RFC1320).
config CRYPTO_MD5
tristate "MD5 digest algorithm"
depends on CRYPTO
help
MD5 message digest algorithm (RFC1321).
config CRYPTO_SHA1
tristate "SHA1 digest algorithm"
depends on CRYPTO
help
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
config CRYPTO_SHA1_Z990
tristate "SHA1 digest algorithm for IBM zSeries z990"
depends on CRYPTO && ARCH_S390
help
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
config CRYPTO_SHA256
tristate "SHA256 digest algorithm"
depends on CRYPTO
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"
depends on CRYPTO
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"
depends on CRYPTO
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:
<http://planeta.terra.com.br/informatica/paulobarreto/WhirlpoolPage.html>
config CRYPTO_TGR192
tristate "Tiger digest algorithms"
depends on CRYPTO
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:
<http://www.cs.technion.ac.il/~biham/Reports/Tiger/>.
config CRYPTO_DES
tristate "DES and Triple DES EDE cipher algorithms"
depends on CRYPTO
help
DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
config CRYPTO_DES_Z990
tristate "DES and Triple DES cipher algorithms for IBM zSeries z990"
depends on CRYPTO && ARCH_S390
help
DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
config CRYPTO_BLOWFISH
tristate "Blowfish cipher algorithm"
depends on CRYPTO
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:
<http://www.schneier.com/blowfish.html>
config CRYPTO_TWOFISH
tristate "Twofish cipher algorithm"
depends on CRYPTO
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:
<http://www.schneier.com/twofish.html>
config CRYPTO_SERPENT
tristate "Serpent cipher algorithm"
depends on CRYPTO
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 code.
See also:
<http://www.cl.cam.ac.uk/~rja14/serpent.html>
config CRYPTO_AES
tristate "AES cipher algorithms"
depends on CRYPTO && !(X86 || UML_X86)
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 <http://csrc.nist.gov/CryptoToolkit/aes/> for more information.
config CRYPTO_AES_586
tristate "AES cipher algorithms (i586)"
depends on CRYPTO && ((X86 || UML_X86) && !64BIT)
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 <http://csrc.nist.gov/encryption/aes/> for more information.
config CRYPTO_AES_X86_64
tristate "AES cipher algorithms (x86_64)"
depends on CRYPTO && ((X86 || UML_X86) && 64BIT)
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 <http://csrc.nist.gov/encryption/aes/> for more information.
config CRYPTO_CAST5
tristate "CAST5 (CAST-128) cipher algorithm"
depends on CRYPTO
help
The CAST5 encryption algorithm (synonymous with CAST-128) is
described in RFC2144.
config CRYPTO_CAST6
tristate "CAST6 (CAST-256) cipher algorithm"
depends on CRYPTO
help
The CAST6 encryption algorithm (synonymous with CAST-256) is
described in RFC2612.
config CRYPTO_TEA
tristate "TEA and XTEA cipher algorithms"
depends on CRYPTO
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.
config CRYPTO_ARC4
tristate "ARC4 cipher algorithm"
depends on CRYPTO
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"
depends on CRYPTO
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:
<http://planeta.terra.com.br/informatica/paulobarreto/KhazadPage.html>
config CRYPTO_ANUBIS
tristate "Anubis cipher algorithm"
depends on CRYPTO
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:
<https://www.cosic.esat.kuleuven.ac.be/nessie/reports/>
<http://planeta.terra.com.br/informatica/paulobarreto/AnubisPage.html>
config CRYPTO_DEFLATE
tristate "Deflate compression algorithm"
depends on CRYPTO
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"
depends on CRYPTO
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"
depends on CRYPTO
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_TEST
tristate "Testing module"
depends on CRYPTO
help
Quick & dirty crypto test module.
source "drivers/crypto/Kconfig"
endmenu