2 # Cryptographic API Configuration
5 menu "Cryptographic options"
8 bool "Cryptographic API"
10 This option provides the core Cryptographic API.
17 This option provides the API for cryptographic algorithms.
19 config CRYPTO_ABLKCIPHER
21 select CRYPTO_BLKCIPHER
23 config CRYPTO_BLKCIPHER
32 tristate "Cryptographic algorithm manager"
35 Create default cryptographic template instantiations such as
39 tristate "HMAC support"
43 HMAC: Keyed-Hashing for Message Authentication (RFC2104).
44 This is required for IPSec.
47 tristate "XCBC support"
48 depends on EXPERIMENTAL
52 XCBC: Keyed-Hashing with encryption algorithm
53 http://www.ietf.org/rfc/rfc3566.txt
54 http://csrc.nist.gov/encryption/modes/proposedmodes/
55 xcbc-mac/xcbc-mac-spec.pdf
58 tristate "Null algorithms"
61 These are 'Null' algorithms, used by IPsec, which do nothing.
64 tristate "MD4 digest algorithm"
67 MD4 message digest algorithm (RFC1320).
70 tristate "MD5 digest algorithm"
73 MD5 message digest algorithm (RFC1321).
76 tristate "SHA1 digest algorithm"
79 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
82 tristate "SHA256 digest algorithm"
85 SHA256 secure hash standard (DFIPS 180-2).
87 This version of SHA implements a 256 bit hash with 128 bits of
88 security against collision attacks.
91 tristate "SHA384 and SHA512 digest algorithms"
94 SHA512 secure hash standard (DFIPS 180-2).
96 This version of SHA implements a 512 bit hash with 256 bits of
97 security against collision attacks.
99 This code also includes SHA-384, a 384 bit hash with 192 bits
100 of security against collision attacks.
103 tristate "Whirlpool digest algorithms"
106 Whirlpool hash algorithm 512, 384 and 256-bit hashes
108 Whirlpool-512 is part of the NESSIE cryptographic primitives.
109 Whirlpool will be part of the ISO/IEC 10118-3:2003(E) standard
112 <http://planeta.terra.com.br/informatica/paulobarreto/WhirlpoolPage.html>
115 tristate "Tiger digest algorithms"
118 Tiger hash algorithm 192, 160 and 128-bit hashes
120 Tiger is a hash function optimized for 64-bit processors while
121 still having decent performance on 32-bit processors.
122 Tiger was developed by Ross Anderson and Eli Biham.
125 <http://www.cs.technion.ac.il/~biham/Reports/Tiger/>.
127 config CRYPTO_GF128MUL
128 tristate "GF(2^128) multiplication functions (EXPERIMENTAL)"
129 depends on EXPERIMENTAL
131 Efficient table driven implementation of multiplications in the
132 field GF(2^128). This is needed by some cypher modes. This
133 option will be selected automatically if you select such a
134 cipher mode. Only select this option by hand if you expect to load
135 an external module that requires these functions.
138 tristate "ECB support"
139 select CRYPTO_BLKCIPHER
140 select CRYPTO_MANAGER
143 ECB: Electronic CodeBook mode
144 This is the simplest block cipher algorithm. It simply encrypts
145 the input block by block.
148 tristate "CBC support"
149 select CRYPTO_BLKCIPHER
150 select CRYPTO_MANAGER
153 CBC: Cipher Block Chaining mode
154 This block cipher algorithm is required for IPSec.
157 tristate "PCBC support"
158 select CRYPTO_BLKCIPHER
159 select CRYPTO_MANAGER
162 PCBC: Propagating Cipher Block Chaining mode
163 This block cipher algorithm is required for RxRPC.
166 tristate "LRW support (EXPERIMENTAL)"
167 depends on EXPERIMENTAL
168 select CRYPTO_BLKCIPHER
169 select CRYPTO_MANAGER
170 select CRYPTO_GF128MUL
172 LRW: Liskov Rivest Wagner, a tweakable, non malleable, non movable
173 narrow block cipher mode for dm-crypt. Use it with cipher
174 specification string aes-lrw-benbi, the key must be 256, 320 or 384.
175 The first 128, 192 or 256 bits in the key are used for AES and the
176 rest is used to tie each cipher block to its logical position.
179 tristate "Software async crypto daemon"
180 select CRYPTO_ABLKCIPHER
181 select CRYPTO_MANAGER
183 This is a generic software asynchronous crypto daemon that
184 converts an arbitrary synchronous software crypto algorithm
185 into an asynchronous algorithm that executes in a kernel thread.
188 tristate "DES and Triple DES EDE cipher algorithms"
191 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
194 tristate "FCrypt cipher algorithm"
196 select CRYPTO_BLKCIPHER
198 FCrypt algorithm used by RxRPC.
200 config CRYPTO_BLOWFISH
201 tristate "Blowfish cipher algorithm"
204 Blowfish cipher algorithm, by Bruce Schneier.
206 This is a variable key length cipher which can use keys from 32
207 bits to 448 bits in length. It's fast, simple and specifically
208 designed for use on "large microprocessors".
211 <http://www.schneier.com/blowfish.html>
213 config CRYPTO_TWOFISH
214 tristate "Twofish cipher algorithm"
216 select CRYPTO_TWOFISH_COMMON
218 Twofish cipher algorithm.
220 Twofish was submitted as an AES (Advanced Encryption Standard)
221 candidate cipher by researchers at CounterPane Systems. It is a
222 16 round block cipher supporting key sizes of 128, 192, and 256
226 <http://www.schneier.com/twofish.html>
228 config CRYPTO_TWOFISH_COMMON
231 Common parts of the Twofish cipher algorithm shared by the
232 generic c and the assembler implementations.
234 config CRYPTO_TWOFISH_586
235 tristate "Twofish cipher algorithms (i586)"
236 depends on (X86 || UML_X86) && !64BIT
238 select CRYPTO_TWOFISH_COMMON
240 Twofish cipher algorithm.
242 Twofish was submitted as an AES (Advanced Encryption Standard)
243 candidate cipher by researchers at CounterPane Systems. It is a
244 16 round block cipher supporting key sizes of 128, 192, and 256
248 <http://www.schneier.com/twofish.html>
250 config CRYPTO_TWOFISH_X86_64
251 tristate "Twofish cipher algorithm (x86_64)"
252 depends on (X86 || UML_X86) && 64BIT
254 select CRYPTO_TWOFISH_COMMON
256 Twofish cipher algorithm (x86_64).
258 Twofish was submitted as an AES (Advanced Encryption Standard)
259 candidate cipher by researchers at CounterPane Systems. It is a
260 16 round block cipher supporting key sizes of 128, 192, and 256
264 <http://www.schneier.com/twofish.html>
266 config CRYPTO_SERPENT
267 tristate "Serpent cipher algorithm"
270 Serpent cipher algorithm, by Anderson, Biham & Knudsen.
272 Keys are allowed to be from 0 to 256 bits in length, in steps
273 of 8 bits. Also includes the 'Tnepres' algorithm, a reversed
274 variant of Serpent for compatibility with old kerneli code.
277 <http://www.cl.cam.ac.uk/~rja14/serpent.html>
280 tristate "AES cipher algorithms"
283 AES cipher algorithms (FIPS-197). AES uses the Rijndael
286 Rijndael appears to be consistently a very good performer in
287 both hardware and software across a wide range of computing
288 environments regardless of its use in feedback or non-feedback
289 modes. Its key setup time is excellent, and its key agility is
290 good. Rijndael's very low memory requirements make it very well
291 suited for restricted-space environments, in which it also
292 demonstrates excellent performance. Rijndael's operations are
293 among the easiest to defend against power and timing attacks.
295 The AES specifies three key sizes: 128, 192 and 256 bits
297 See <http://csrc.nist.gov/CryptoToolkit/aes/> for more information.
299 config CRYPTO_AES_586
300 tristate "AES cipher algorithms (i586)"
301 depends on (X86 || UML_X86) && !64BIT
304 AES cipher algorithms (FIPS-197). AES uses the Rijndael
307 Rijndael appears to be consistently a very good performer in
308 both hardware and software across a wide range of computing
309 environments regardless of its use in feedback or non-feedback
310 modes. Its key setup time is excellent, and its key agility is
311 good. Rijndael's very low memory requirements make it very well
312 suited for restricted-space environments, in which it also
313 demonstrates excellent performance. Rijndael's operations are
314 among the easiest to defend against power and timing attacks.
316 The AES specifies three key sizes: 128, 192 and 256 bits
318 See <http://csrc.nist.gov/encryption/aes/> for more information.
320 config CRYPTO_AES_X86_64
321 tristate "AES cipher algorithms (x86_64)"
322 depends on (X86 || UML_X86) && 64BIT
325 AES cipher algorithms (FIPS-197). AES uses the Rijndael
328 Rijndael appears to be consistently a very good performer in
329 both hardware and software across a wide range of computing
330 environments regardless of its use in feedback or non-feedback
331 modes. Its key setup time is excellent, and its key agility is
332 good. Rijndael's very low memory requirements make it very well
333 suited for restricted-space environments, in which it also
334 demonstrates excellent performance. Rijndael's operations are
335 among the easiest to defend against power and timing attacks.
337 The AES specifies three key sizes: 128, 192 and 256 bits
339 See <http://csrc.nist.gov/encryption/aes/> for more information.
342 tristate "CAST5 (CAST-128) cipher algorithm"
345 The CAST5 encryption algorithm (synonymous with CAST-128) is
346 described in RFC2144.
349 tristate "CAST6 (CAST-256) cipher algorithm"
352 The CAST6 encryption algorithm (synonymous with CAST-256) is
353 described in RFC2612.
356 tristate "TEA, XTEA and XETA cipher algorithms"
359 TEA cipher algorithm.
361 Tiny Encryption Algorithm is a simple cipher that uses
362 many rounds for security. It is very fast and uses
365 Xtendend Tiny Encryption Algorithm is a modification to
366 the TEA algorithm to address a potential key weakness
367 in the TEA algorithm.
369 Xtendend Encryption Tiny Algorithm is a mis-implementation
370 of the XTEA algorithm for compatibility purposes.
373 tristate "ARC4 cipher algorithm"
376 ARC4 cipher algorithm.
378 ARC4 is a stream cipher using keys ranging from 8 bits to 2048
379 bits in length. This algorithm is required for driver-based
380 WEP, but it should not be for other purposes because of the
381 weakness of the algorithm.
384 tristate "Khazad cipher algorithm"
387 Khazad cipher algorithm.
389 Khazad was a finalist in the initial NESSIE competition. It is
390 an algorithm optimized for 64-bit processors with good performance
391 on 32-bit processors. Khazad uses an 128 bit key size.
394 <http://planeta.terra.com.br/informatica/paulobarreto/KhazadPage.html>
397 tristate "Anubis cipher algorithm"
400 Anubis cipher algorithm.
402 Anubis is a variable key length cipher which can use keys from
403 128 bits to 320 bits in length. It was evaluated as a entrant
404 in the NESSIE competition.
407 <https://www.cosic.esat.kuleuven.ac.be/nessie/reports/>
408 <http://planeta.terra.com.br/informatica/paulobarreto/AnubisPage.html>
411 config CRYPTO_DEFLATE
412 tristate "Deflate compression algorithm"
417 This is the Deflate algorithm (RFC1951), specified for use in
418 IPSec with the IPCOMP protocol (RFC3173, RFC2394).
420 You will most probably want this if using IPSec.
422 config CRYPTO_MICHAEL_MIC
423 tristate "Michael MIC keyed digest algorithm"
426 Michael MIC is used for message integrity protection in TKIP
427 (IEEE 802.11i). This algorithm is required for TKIP, but it
428 should not be used for other purposes because of the weakness
432 tristate "CRC32c CRC algorithm"
436 Castagnoli, et al Cyclic Redundancy-Check Algorithm. Used
437 by iSCSI for header and data digests and by others.
438 See Castagnoli93. This implementation uses lib/libcrc32c.
439 Module will be crc32c.
441 config CRYPTO_CAMELLIA
442 tristate "Camellia cipher algorithms"
446 Camellia cipher algorithms module.
448 Camellia is a symmetric key block cipher developed jointly
449 at NTT and Mitsubishi Electric Corporation.
451 The Camellia specifies three key sizes: 128, 192 and 256 bits.
454 <https://info.isl.ntt.co.jp/crypt/eng/camellia/index_s.html>
457 tristate "Testing module"
461 Quick & dirty crypto test module.
463 source "drivers/crypto/Kconfig"