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_BLKCIPHER
28 tristate "Cryptographic algorithm manager"
31 Create default cryptographic template instantiations such as
35 tristate "HMAC support"
39 HMAC: Keyed-Hashing for Message Authentication (RFC2104).
40 This is required for IPSec.
43 tristate "XCBC support"
44 depends on EXPERIMENTAL
48 XCBC: Keyed-Hashing with encryption algorithm
49 http://www.ietf.org/rfc/rfc3566.txt
50 http://csrc.nist.gov/encryption/modes/proposedmodes/
51 xcbc-mac/xcbc-mac-spec.pdf
54 tristate "Null algorithms"
57 These are 'Null' algorithms, used by IPsec, which do nothing.
60 tristate "MD4 digest algorithm"
63 MD4 message digest algorithm (RFC1320).
66 tristate "MD5 digest algorithm"
69 MD5 message digest algorithm (RFC1321).
72 tristate "SHA1 digest algorithm"
75 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
77 config CRYPTO_SHA1_S390
78 tristate "SHA1 digest algorithm (s390)"
82 This is the s390 hardware accelerated implementation of the
83 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
86 tristate "SHA256 digest algorithm"
89 SHA256 secure hash standard (DFIPS 180-2).
91 This version of SHA implements a 256 bit hash with 128 bits of
92 security against collision attacks.
94 config CRYPTO_SHA256_S390
95 tristate "SHA256 digest algorithm (s390)"
99 This is the s390 hardware accelerated implementation of the
100 SHA256 secure hash standard (DFIPS 180-2).
102 This version of SHA implements a 256 bit hash with 128 bits of
103 security against collision attacks.
106 tristate "SHA384 and SHA512 digest algorithms"
109 SHA512 secure hash standard (DFIPS 180-2).
111 This version of SHA implements a 512 bit hash with 256 bits of
112 security against collision attacks.
114 This code also includes SHA-384, a 384 bit hash with 192 bits
115 of security against collision attacks.
118 tristate "Whirlpool digest algorithms"
121 Whirlpool hash algorithm 512, 384 and 256-bit hashes
123 Whirlpool-512 is part of the NESSIE cryptographic primitives.
124 Whirlpool will be part of the ISO/IEC 10118-3:2003(E) standard
127 <http://planeta.terra.com.br/informatica/paulobarreto/WhirlpoolPage.html>
130 tristate "Tiger digest algorithms"
133 Tiger hash algorithm 192, 160 and 128-bit hashes
135 Tiger is a hash function optimized for 64-bit processors while
136 still having decent performance on 32-bit processors.
137 Tiger was developed by Ross Anderson and Eli Biham.
140 <http://www.cs.technion.ac.il/~biham/Reports/Tiger/>.
142 config CRYPTO_GF128MUL
143 tristate "GF(2^128) multiplication functions (EXPERIMENTAL)"
144 depends on EXPERIMENTAL
146 Efficient table driven implementation of multiplications in the
147 field GF(2^128). This is needed by some cypher modes. This
148 option will be selected automatically if you select such a
149 cipher mode. Only select this option by hand if you expect to load
150 an external module that requires these functions.
153 tristate "ECB support"
154 select CRYPTO_BLKCIPHER
155 select CRYPTO_MANAGER
158 ECB: Electronic CodeBook mode
159 This is the simplest block cipher algorithm. It simply encrypts
160 the input block by block.
163 tristate "CBC support"
164 select CRYPTO_BLKCIPHER
165 select CRYPTO_MANAGER
168 CBC: Cipher Block Chaining mode
169 This block cipher algorithm is required for IPSec.
172 tristate "PCBC support"
173 select CRYPTO_BLKCIPHER
174 select CRYPTO_MANAGER
177 PCBC: Propagating Cipher Block Chaining mode
178 This block cipher algorithm is required for RxRPC.
181 tristate "LRW support (EXPERIMENTAL)"
182 depends on EXPERIMENTAL
183 select CRYPTO_BLKCIPHER
184 select CRYPTO_MANAGER
185 select CRYPTO_GF128MUL
187 LRW: Liskov Rivest Wagner, a tweakable, non malleable, non movable
188 narrow block cipher mode for dm-crypt. Use it with cipher
189 specification string aes-lrw-benbi, the key must be 256, 320 or 384.
190 The first 128, 192 or 256 bits in the key are used for AES and the
191 rest is used to tie each cipher block to its logical position.
194 tristate "DES and Triple DES EDE cipher algorithms"
197 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
199 config CRYPTO_DES_S390
200 tristate "DES and Triple DES cipher algorithms (s390)"
203 select CRYPTO_BLKCIPHER
205 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
207 config CRYPTO_BLOWFISH
208 tristate "Blowfish cipher algorithm"
211 Blowfish cipher algorithm, by Bruce Schneier.
213 This is a variable key length cipher which can use keys from 32
214 bits to 448 bits in length. It's fast, simple and specifically
215 designed for use on "large microprocessors".
218 <http://www.schneier.com/blowfish.html>
220 config CRYPTO_TWOFISH
221 tristate "Twofish cipher algorithm"
223 select CRYPTO_TWOFISH_COMMON
225 Twofish cipher algorithm.
227 Twofish was submitted as an AES (Advanced Encryption Standard)
228 candidate cipher by researchers at CounterPane Systems. It is a
229 16 round block cipher supporting key sizes of 128, 192, and 256
233 <http://www.schneier.com/twofish.html>
235 config CRYPTO_TWOFISH_COMMON
238 Common parts of the Twofish cipher algorithm shared by the
239 generic c and the assembler implementations.
241 config CRYPTO_TWOFISH_586
242 tristate "Twofish cipher algorithms (i586)"
243 depends on (X86 || UML_X86) && !64BIT
245 select CRYPTO_TWOFISH_COMMON
247 Twofish cipher algorithm.
249 Twofish was submitted as an AES (Advanced Encryption Standard)
250 candidate cipher by researchers at CounterPane Systems. It is a
251 16 round block cipher supporting key sizes of 128, 192, and 256
255 <http://www.schneier.com/twofish.html>
257 config CRYPTO_TWOFISH_X86_64
258 tristate "Twofish cipher algorithm (x86_64)"
259 depends on (X86 || UML_X86) && 64BIT
261 select CRYPTO_TWOFISH_COMMON
263 Twofish cipher algorithm (x86_64).
265 Twofish was submitted as an AES (Advanced Encryption Standard)
266 candidate cipher by researchers at CounterPane Systems. It is a
267 16 round block cipher supporting key sizes of 128, 192, and 256
271 <http://www.schneier.com/twofish.html>
273 config CRYPTO_SERPENT
274 tristate "Serpent cipher algorithm"
277 Serpent cipher algorithm, by Anderson, Biham & Knudsen.
279 Keys are allowed to be from 0 to 256 bits in length, in steps
280 of 8 bits. Also includes the 'Tnepres' algorithm, a reversed
281 variant of Serpent for compatibility with old kerneli code.
284 <http://www.cl.cam.ac.uk/~rja14/serpent.html>
287 tristate "AES cipher algorithms"
290 AES cipher algorithms (FIPS-197). AES uses the Rijndael
293 Rijndael appears to be consistently a very good performer in
294 both hardware and software across a wide range of computing
295 environments regardless of its use in feedback or non-feedback
296 modes. Its key setup time is excellent, and its key agility is
297 good. Rijndael's very low memory requirements make it very well
298 suited for restricted-space environments, in which it also
299 demonstrates excellent performance. Rijndael's operations are
300 among the easiest to defend against power and timing attacks.
302 The AES specifies three key sizes: 128, 192 and 256 bits
304 See <http://csrc.nist.gov/CryptoToolkit/aes/> for more information.
306 config CRYPTO_AES_586
307 tristate "AES cipher algorithms (i586)"
308 depends on (X86 || UML_X86) && !64BIT
311 AES cipher algorithms (FIPS-197). AES uses the Rijndael
314 Rijndael appears to be consistently a very good performer in
315 both hardware and software across a wide range of computing
316 environments regardless of its use in feedback or non-feedback
317 modes. Its key setup time is excellent, and its key agility is
318 good. Rijndael's very low memory requirements make it very well
319 suited for restricted-space environments, in which it also
320 demonstrates excellent performance. Rijndael's operations are
321 among the easiest to defend against power and timing attacks.
323 The AES specifies three key sizes: 128, 192 and 256 bits
325 See <http://csrc.nist.gov/encryption/aes/> for more information.
327 config CRYPTO_AES_X86_64
328 tristate "AES cipher algorithms (x86_64)"
329 depends on (X86 || UML_X86) && 64BIT
332 AES cipher algorithms (FIPS-197). AES uses the Rijndael
335 Rijndael appears to be consistently a very good performer in
336 both hardware and software across a wide range of computing
337 environments regardless of its use in feedback or non-feedback
338 modes. Its key setup time is excellent, and its key agility is
339 good. Rijndael's very low memory requirements make it very well
340 suited for restricted-space environments, in which it also
341 demonstrates excellent performance. Rijndael's operations are
342 among the easiest to defend against power and timing attacks.
344 The AES specifies three key sizes: 128, 192 and 256 bits
346 See <http://csrc.nist.gov/encryption/aes/> for more information.
348 config CRYPTO_AES_S390
349 tristate "AES cipher algorithms (s390)"
352 select CRYPTO_BLKCIPHER
354 This is the s390 hardware accelerated implementation of the
355 AES cipher algorithms (FIPS-197). AES uses the Rijndael
358 Rijndael appears to be consistently a very good performer in
359 both hardware and software across a wide range of computing
360 environments regardless of its use in feedback or non-feedback
361 modes. Its key setup time is excellent, and its key agility is
362 good. Rijndael's very low memory requirements make it very well
363 suited for restricted-space environments, in which it also
364 demonstrates excellent performance. Rijndael's operations are
365 among the easiest to defend against power and timing attacks.
367 On s390 the System z9-109 currently only supports the key size
371 tristate "CAST5 (CAST-128) cipher algorithm"
374 The CAST5 encryption algorithm (synonymous with CAST-128) is
375 described in RFC2144.
378 tristate "CAST6 (CAST-256) cipher algorithm"
381 The CAST6 encryption algorithm (synonymous with CAST-256) is
382 described in RFC2612.
385 tristate "TEA, XTEA and XETA cipher algorithms"
388 TEA cipher algorithm.
390 Tiny Encryption Algorithm is a simple cipher that uses
391 many rounds for security. It is very fast and uses
394 Xtendend Tiny Encryption Algorithm is a modification to
395 the TEA algorithm to address a potential key weakness
396 in the TEA algorithm.
398 Xtendend Encryption Tiny Algorithm is a mis-implementation
399 of the XTEA algorithm for compatibility purposes.
402 tristate "ARC4 cipher algorithm"
405 ARC4 cipher algorithm.
407 ARC4 is a stream cipher using keys ranging from 8 bits to 2048
408 bits in length. This algorithm is required for driver-based
409 WEP, but it should not be for other purposes because of the
410 weakness of the algorithm.
413 tristate "Khazad cipher algorithm"
416 Khazad cipher algorithm.
418 Khazad was a finalist in the initial NESSIE competition. It is
419 an algorithm optimized for 64-bit processors with good performance
420 on 32-bit processors. Khazad uses an 128 bit key size.
423 <http://planeta.terra.com.br/informatica/paulobarreto/KhazadPage.html>
426 tristate "Anubis cipher algorithm"
429 Anubis cipher algorithm.
431 Anubis is a variable key length cipher which can use keys from
432 128 bits to 320 bits in length. It was evaluated as a entrant
433 in the NESSIE competition.
436 <https://www.cosic.esat.kuleuven.ac.be/nessie/reports/>
437 <http://planeta.terra.com.br/informatica/paulobarreto/AnubisPage.html>
440 config CRYPTO_DEFLATE
441 tristate "Deflate compression algorithm"
446 This is the Deflate algorithm (RFC1951), specified for use in
447 IPSec with the IPCOMP protocol (RFC3173, RFC2394).
449 You will most probably want this if using IPSec.
451 config CRYPTO_MICHAEL_MIC
452 tristate "Michael MIC keyed digest algorithm"
455 Michael MIC is used for message integrity protection in TKIP
456 (IEEE 802.11i). This algorithm is required for TKIP, but it
457 should not be used for other purposes because of the weakness
461 tristate "CRC32c CRC algorithm"
465 Castagnoli, et al Cyclic Redundancy-Check Algorithm. Used
466 by iSCSI for header and data digests and by others.
467 See Castagnoli93. This implementation uses lib/libcrc32c.
468 Module will be crc32c.
471 tristate "Testing module"
475 Quick & dirty crypto test module.
477 source "drivers/crypto/Kconfig"