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 "DES and Triple DES EDE cipher algorithms"
182 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
185 tristate "FCrypt cipher algorithm"
187 select CRYPTO_BLKCIPHER
189 FCrypt algorithm used by RxRPC.
191 config CRYPTO_BLOWFISH
192 tristate "Blowfish cipher algorithm"
195 Blowfish cipher algorithm, by Bruce Schneier.
197 This is a variable key length cipher which can use keys from 32
198 bits to 448 bits in length. It's fast, simple and specifically
199 designed for use on "large microprocessors".
202 <http://www.schneier.com/blowfish.html>
204 config CRYPTO_TWOFISH
205 tristate "Twofish cipher algorithm"
207 select CRYPTO_TWOFISH_COMMON
209 Twofish cipher algorithm.
211 Twofish was submitted as an AES (Advanced Encryption Standard)
212 candidate cipher by researchers at CounterPane Systems. It is a
213 16 round block cipher supporting key sizes of 128, 192, and 256
217 <http://www.schneier.com/twofish.html>
219 config CRYPTO_TWOFISH_COMMON
222 Common parts of the Twofish cipher algorithm shared by the
223 generic c and the assembler implementations.
225 config CRYPTO_TWOFISH_586
226 tristate "Twofish cipher algorithms (i586)"
227 depends on (X86 || UML_X86) && !64BIT
229 select CRYPTO_TWOFISH_COMMON
231 Twofish cipher algorithm.
233 Twofish was submitted as an AES (Advanced Encryption Standard)
234 candidate cipher by researchers at CounterPane Systems. It is a
235 16 round block cipher supporting key sizes of 128, 192, and 256
239 <http://www.schneier.com/twofish.html>
241 config CRYPTO_TWOFISH_X86_64
242 tristate "Twofish cipher algorithm (x86_64)"
243 depends on (X86 || UML_X86) && 64BIT
245 select CRYPTO_TWOFISH_COMMON
247 Twofish cipher algorithm (x86_64).
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_SERPENT
258 tristate "Serpent cipher algorithm"
261 Serpent cipher algorithm, by Anderson, Biham & Knudsen.
263 Keys are allowed to be from 0 to 256 bits in length, in steps
264 of 8 bits. Also includes the 'Tnepres' algorithm, a reversed
265 variant of Serpent for compatibility with old kerneli code.
268 <http://www.cl.cam.ac.uk/~rja14/serpent.html>
271 tristate "AES cipher algorithms"
274 AES cipher algorithms (FIPS-197). AES uses the Rijndael
277 Rijndael appears to be consistently a very good performer in
278 both hardware and software across a wide range of computing
279 environments regardless of its use in feedback or non-feedback
280 modes. Its key setup time is excellent, and its key agility is
281 good. Rijndael's very low memory requirements make it very well
282 suited for restricted-space environments, in which it also
283 demonstrates excellent performance. Rijndael's operations are
284 among the easiest to defend against power and timing attacks.
286 The AES specifies three key sizes: 128, 192 and 256 bits
288 See <http://csrc.nist.gov/CryptoToolkit/aes/> for more information.
290 config CRYPTO_AES_586
291 tristate "AES cipher algorithms (i586)"
292 depends on (X86 || UML_X86) && !64BIT
295 AES cipher algorithms (FIPS-197). AES uses the Rijndael
298 Rijndael appears to be consistently a very good performer in
299 both hardware and software across a wide range of computing
300 environments regardless of its use in feedback or non-feedback
301 modes. Its key setup time is excellent, and its key agility is
302 good. Rijndael's very low memory requirements make it very well
303 suited for restricted-space environments, in which it also
304 demonstrates excellent performance. Rijndael's operations are
305 among the easiest to defend against power and timing attacks.
307 The AES specifies three key sizes: 128, 192 and 256 bits
309 See <http://csrc.nist.gov/encryption/aes/> for more information.
311 config CRYPTO_AES_X86_64
312 tristate "AES cipher algorithms (x86_64)"
313 depends on (X86 || UML_X86) && 64BIT
316 AES cipher algorithms (FIPS-197). AES uses the Rijndael
319 Rijndael appears to be consistently a very good performer in
320 both hardware and software across a wide range of computing
321 environments regardless of its use in feedback or non-feedback
322 modes. Its key setup time is excellent, and its key agility is
323 good. Rijndael's very low memory requirements make it very well
324 suited for restricted-space environments, in which it also
325 demonstrates excellent performance. Rijndael's operations are
326 among the easiest to defend against power and timing attacks.
328 The AES specifies three key sizes: 128, 192 and 256 bits
330 See <http://csrc.nist.gov/encryption/aes/> for more information.
333 tristate "CAST5 (CAST-128) cipher algorithm"
336 The CAST5 encryption algorithm (synonymous with CAST-128) is
337 described in RFC2144.
340 tristate "CAST6 (CAST-256) cipher algorithm"
343 The CAST6 encryption algorithm (synonymous with CAST-256) is
344 described in RFC2612.
347 tristate "TEA, XTEA and XETA cipher algorithms"
350 TEA cipher algorithm.
352 Tiny Encryption Algorithm is a simple cipher that uses
353 many rounds for security. It is very fast and uses
356 Xtendend Tiny Encryption Algorithm is a modification to
357 the TEA algorithm to address a potential key weakness
358 in the TEA algorithm.
360 Xtendend Encryption Tiny Algorithm is a mis-implementation
361 of the XTEA algorithm for compatibility purposes.
364 tristate "ARC4 cipher algorithm"
367 ARC4 cipher algorithm.
369 ARC4 is a stream cipher using keys ranging from 8 bits to 2048
370 bits in length. This algorithm is required for driver-based
371 WEP, but it should not be for other purposes because of the
372 weakness of the algorithm.
375 tristate "Khazad cipher algorithm"
378 Khazad cipher algorithm.
380 Khazad was a finalist in the initial NESSIE competition. It is
381 an algorithm optimized for 64-bit processors with good performance
382 on 32-bit processors. Khazad uses an 128 bit key size.
385 <http://planeta.terra.com.br/informatica/paulobarreto/KhazadPage.html>
388 tristate "Anubis cipher algorithm"
391 Anubis cipher algorithm.
393 Anubis is a variable key length cipher which can use keys from
394 128 bits to 320 bits in length. It was evaluated as a entrant
395 in the NESSIE competition.
398 <https://www.cosic.esat.kuleuven.ac.be/nessie/reports/>
399 <http://planeta.terra.com.br/informatica/paulobarreto/AnubisPage.html>
402 config CRYPTO_DEFLATE
403 tristate "Deflate compression algorithm"
408 This is the Deflate algorithm (RFC1951), specified for use in
409 IPSec with the IPCOMP protocol (RFC3173, RFC2394).
411 You will most probably want this if using IPSec.
413 config CRYPTO_MICHAEL_MIC
414 tristate "Michael MIC keyed digest algorithm"
417 Michael MIC is used for message integrity protection in TKIP
418 (IEEE 802.11i). This algorithm is required for TKIP, but it
419 should not be used for other purposes because of the weakness
423 tristate "CRC32c CRC algorithm"
427 Castagnoli, et al Cyclic Redundancy-Check Algorithm. Used
428 by iSCSI for header and data digests and by others.
429 See Castagnoli93. This implementation uses lib/libcrc32c.
430 Module will be crc32c.
432 config CRYPTO_CAMELLIA
433 tristate "Camellia cipher algorithms"
437 Camellia cipher algorithms module.
439 Camellia is a symmetric key block cipher developed jointly
440 at NTT and Mitsubishi Electric Corporation.
442 The Camellia specifies three key sizes: 128, 192 and 256 bits.
445 <https://info.isl.ntt.co.jp/crypt/eng/camellia/index_s.html>
448 tristate "Testing module"
452 Quick & dirty crypto test module.
454 source "drivers/crypto/Kconfig"