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 "LRW support (EXPERIMENTAL)"
173 depends on EXPERIMENTAL
174 select CRYPTO_BLKCIPHER
175 select CRYPTO_MANAGER
176 select CRYPTO_GF128MUL
178 LRW: Liskov Rivest Wagner, a tweakable, non malleable, non movable
179 narrow block cipher mode for dm-crypt. Use it with cipher
180 specification string aes-lrw-benbi, the key must be 256, 320 or 384.
181 The first 128, 192 or 256 bits in the key are used for AES and the
182 rest is used to tie each cipher block to its logical position.
185 tristate "DES and Triple DES EDE cipher algorithms"
188 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
190 config CRYPTO_DES_S390
191 tristate "DES and Triple DES cipher algorithms (s390)"
194 select CRYPTO_BLKCIPHER
196 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
198 config CRYPTO_BLOWFISH
199 tristate "Blowfish cipher algorithm"
202 Blowfish cipher algorithm, by Bruce Schneier.
204 This is a variable key length cipher which can use keys from 32
205 bits to 448 bits in length. It's fast, simple and specifically
206 designed for use on "large microprocessors".
209 <http://www.schneier.com/blowfish.html>
211 config CRYPTO_TWOFISH
212 tristate "Twofish cipher algorithm"
214 select CRYPTO_TWOFISH_COMMON
216 Twofish cipher algorithm.
218 Twofish was submitted as an AES (Advanced Encryption Standard)
219 candidate cipher by researchers at CounterPane Systems. It is a
220 16 round block cipher supporting key sizes of 128, 192, and 256
224 <http://www.schneier.com/twofish.html>
226 config CRYPTO_TWOFISH_COMMON
229 Common parts of the Twofish cipher algorithm shared by the
230 generic c and the assembler implementations.
232 config CRYPTO_TWOFISH_586
233 tristate "Twofish cipher algorithms (i586)"
234 depends on (X86 || UML_X86) && !64BIT
236 select CRYPTO_TWOFISH_COMMON
238 Twofish cipher algorithm.
240 Twofish was submitted as an AES (Advanced Encryption Standard)
241 candidate cipher by researchers at CounterPane Systems. It is a
242 16 round block cipher supporting key sizes of 128, 192, and 256
246 <http://www.schneier.com/twofish.html>
248 config CRYPTO_TWOFISH_X86_64
249 tristate "Twofish cipher algorithm (x86_64)"
250 depends on (X86 || UML_X86) && 64BIT
252 select CRYPTO_TWOFISH_COMMON
254 Twofish cipher algorithm (x86_64).
256 Twofish was submitted as an AES (Advanced Encryption Standard)
257 candidate cipher by researchers at CounterPane Systems. It is a
258 16 round block cipher supporting key sizes of 128, 192, and 256
262 <http://www.schneier.com/twofish.html>
264 config CRYPTO_SERPENT
265 tristate "Serpent cipher algorithm"
268 Serpent cipher algorithm, by Anderson, Biham & Knudsen.
270 Keys are allowed to be from 0 to 256 bits in length, in steps
271 of 8 bits. Also includes the 'Tnepres' algorithm, a reversed
272 variant of Serpent for compatibility with old kerneli code.
275 <http://www.cl.cam.ac.uk/~rja14/serpent.html>
278 tristate "AES cipher algorithms"
281 AES cipher algorithms (FIPS-197). AES uses the Rijndael
284 Rijndael appears to be consistently a very good performer in
285 both hardware and software across a wide range of computing
286 environments regardless of its use in feedback or non-feedback
287 modes. Its key setup time is excellent, and its key agility is
288 good. Rijndael's very low memory requirements make it very well
289 suited for restricted-space environments, in which it also
290 demonstrates excellent performance. Rijndael's operations are
291 among the easiest to defend against power and timing attacks.
293 The AES specifies three key sizes: 128, 192 and 256 bits
295 See <http://csrc.nist.gov/CryptoToolkit/aes/> for more information.
297 config CRYPTO_AES_586
298 tristate "AES cipher algorithms (i586)"
299 depends on (X86 || UML_X86) && !64BIT
302 AES cipher algorithms (FIPS-197). AES uses the Rijndael
305 Rijndael appears to be consistently a very good performer in
306 both hardware and software across a wide range of computing
307 environments regardless of its use in feedback or non-feedback
308 modes. Its key setup time is excellent, and its key agility is
309 good. Rijndael's very low memory requirements make it very well
310 suited for restricted-space environments, in which it also
311 demonstrates excellent performance. Rijndael's operations are
312 among the easiest to defend against power and timing attacks.
314 The AES specifies three key sizes: 128, 192 and 256 bits
316 See <http://csrc.nist.gov/encryption/aes/> for more information.
318 config CRYPTO_AES_X86_64
319 tristate "AES cipher algorithms (x86_64)"
320 depends on (X86 || UML_X86) && 64BIT
323 AES cipher algorithms (FIPS-197). AES uses the Rijndael
326 Rijndael appears to be consistently a very good performer in
327 both hardware and software across a wide range of computing
328 environments regardless of its use in feedback or non-feedback
329 modes. Its key setup time is excellent, and its key agility is
330 good. Rijndael's very low memory requirements make it very well
331 suited for restricted-space environments, in which it also
332 demonstrates excellent performance. Rijndael's operations are
333 among the easiest to defend against power and timing attacks.
335 The AES specifies three key sizes: 128, 192 and 256 bits
337 See <http://csrc.nist.gov/encryption/aes/> for more information.
339 config CRYPTO_AES_S390
340 tristate "AES cipher algorithms (s390)"
343 select CRYPTO_BLKCIPHER
345 This is the s390 hardware accelerated implementation of the
346 AES cipher algorithms (FIPS-197). AES uses the Rijndael
349 Rijndael appears to be consistently a very good performer in
350 both hardware and software across a wide range of computing
351 environments regardless of its use in feedback or non-feedback
352 modes. Its key setup time is excellent, and its key agility is
353 good. Rijndael's very low memory requirements make it very well
354 suited for restricted-space environments, in which it also
355 demonstrates excellent performance. Rijndael's operations are
356 among the easiest to defend against power and timing attacks.
358 On s390 the System z9-109 currently only supports the key size
362 tristate "CAST5 (CAST-128) cipher algorithm"
365 The CAST5 encryption algorithm (synonymous with CAST-128) is
366 described in RFC2144.
369 tristate "CAST6 (CAST-256) cipher algorithm"
372 The CAST6 encryption algorithm (synonymous with CAST-256) is
373 described in RFC2612.
376 tristate "TEA, XTEA and XETA cipher algorithms"
379 TEA cipher algorithm.
381 Tiny Encryption Algorithm is a simple cipher that uses
382 many rounds for security. It is very fast and uses
385 Xtendend Tiny Encryption Algorithm is a modification to
386 the TEA algorithm to address a potential key weakness
387 in the TEA algorithm.
389 Xtendend Encryption Tiny Algorithm is a mis-implementation
390 of the XTEA algorithm for compatibility purposes.
393 tristate "ARC4 cipher algorithm"
396 ARC4 cipher algorithm.
398 ARC4 is a stream cipher using keys ranging from 8 bits to 2048
399 bits in length. This algorithm is required for driver-based
400 WEP, but it should not be for other purposes because of the
401 weakness of the algorithm.
404 tristate "Khazad cipher algorithm"
407 Khazad cipher algorithm.
409 Khazad was a finalist in the initial NESSIE competition. It is
410 an algorithm optimized for 64-bit processors with good performance
411 on 32-bit processors. Khazad uses an 128 bit key size.
414 <http://planeta.terra.com.br/informatica/paulobarreto/KhazadPage.html>
417 tristate "Anubis cipher algorithm"
420 Anubis cipher algorithm.
422 Anubis is a variable key length cipher which can use keys from
423 128 bits to 320 bits in length. It was evaluated as a entrant
424 in the NESSIE competition.
427 <https://www.cosic.esat.kuleuven.ac.be/nessie/reports/>
428 <http://planeta.terra.com.br/informatica/paulobarreto/AnubisPage.html>
431 config CRYPTO_DEFLATE
432 tristate "Deflate compression algorithm"
437 This is the Deflate algorithm (RFC1951), specified for use in
438 IPSec with the IPCOMP protocol (RFC3173, RFC2394).
440 You will most probably want this if using IPSec.
442 config CRYPTO_MICHAEL_MIC
443 tristate "Michael MIC keyed digest algorithm"
446 Michael MIC is used for message integrity protection in TKIP
447 (IEEE 802.11i). This algorithm is required for TKIP, but it
448 should not be used for other purposes because of the weakness
452 tristate "CRC32c CRC algorithm"
456 Castagnoli, et al Cyclic Redundancy-Check Algorithm. Used
457 by iSCSI for header and data digests and by others.
458 See Castagnoli93. This implementation uses lib/libcrc32c.
459 Module will be crc32c.
462 tristate "Testing module"
466 Quick & dirty crypto test module.
468 source "drivers/crypto/Kconfig"