2 # Cryptographic API Configuration
5 menu "Cryptographic options"
8 bool "Cryptographic API"
10 This option provides the core Cryptographic API.
16 HMAC: Keyed-Hashing for Message Authentication (RFC2104).
17 This is required for IPSec.
20 tristate "Null algorithms"
23 These are 'Null' algorithms, used by IPsec, which do nothing.
26 tristate "MD4 digest algorithm"
29 MD4 message digest algorithm (RFC1320).
32 tristate "MD5 digest algorithm"
35 MD5 message digest algorithm (RFC1321).
38 tristate "SHA1 digest algorithm"
41 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
43 config CRYPTO_SHA1_Z990
44 tristate "SHA1 digest algorithm for IBM zSeries z990"
45 depends on CRYPTO && ARCH_S390
47 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
50 tristate "SHA256 digest algorithm"
53 SHA256 secure hash standard (DFIPS 180-2).
55 This version of SHA implements a 256 bit hash with 128 bits of
56 security against collision attacks.
59 tristate "SHA384 and SHA512 digest algorithms"
62 SHA512 secure hash standard (DFIPS 180-2).
64 This version of SHA implements a 512 bit hash with 256 bits of
65 security against collision attacks.
67 This code also includes SHA-384, a 384 bit hash with 192 bits
68 of security against collision attacks.
71 tristate "Whirlpool digest algorithms"
74 Whirlpool hash algorithm 512, 384 and 256-bit hashes
76 Whirlpool-512 is part of the NESSIE cryptographic primitives.
77 Whirlpool will be part of the ISO/IEC 10118-3:2003(E) standard
80 <http://planeta.terra.com.br/informatica/paulobarreto/WhirlpoolPage.html>
83 tristate "Tiger digest algorithms"
86 Tiger hash algorithm 192, 160 and 128-bit hashes
88 Tiger is a hash function optimized for 64-bit processors while
89 still having decent performance on 32-bit processors.
90 Tiger was developed by Ross Anderson and Eli Biham.
93 <http://www.cs.technion.ac.il/~biham/Reports/Tiger/>.
96 tristate "DES and Triple DES EDE cipher algorithms"
99 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
101 config CRYPTO_DES_Z990
102 tristate "DES and Triple DES cipher algorithms for IBM zSeries z990"
103 depends on CRYPTO && ARCH_S390
105 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
107 config CRYPTO_BLOWFISH
108 tristate "Blowfish cipher algorithm"
111 Blowfish cipher algorithm, by Bruce Schneier.
113 This is a variable key length cipher which can use keys from 32
114 bits to 448 bits in length. It's fast, simple and specifically
115 designed for use on "large microprocessors".
118 <http://www.schneier.com/blowfish.html>
120 config CRYPTO_TWOFISH
121 tristate "Twofish cipher algorithm"
124 Twofish cipher algorithm.
126 Twofish was submitted as an AES (Advanced Encryption Standard)
127 candidate cipher by researchers at CounterPane Systems. It is a
128 16 round block cipher supporting key sizes of 128, 192, and 256
132 <http://www.schneier.com/twofish.html>
134 config CRYPTO_SERPENT
135 tristate "Serpent cipher algorithm"
138 Serpent cipher algorithm, by Anderson, Biham & Knudsen.
140 Keys are allowed to be from 0 to 256 bits in length, in steps
141 of 8 bits. Also includes the 'Tnepres' algorithm, a reversed
142 variant of Serpent for compatibility with old kerneli code.
145 <http://www.cl.cam.ac.uk/~rja14/serpent.html>
148 tristate "AES cipher algorithms"
149 depends on CRYPTO && !(X86 || UML_X86)
151 AES cipher algorithms (FIPS-197). AES uses the Rijndael
154 Rijndael appears to be consistently a very good performer in
155 both hardware and software across a wide range of computing
156 environments regardless of its use in feedback or non-feedback
157 modes. Its key setup time is excellent, and its key agility is
158 good. Rijndael's very low memory requirements make it very well
159 suited for restricted-space environments, in which it also
160 demonstrates excellent performance. Rijndael's operations are
161 among the easiest to defend against power and timing attacks.
163 The AES specifies three key sizes: 128, 192 and 256 bits
165 See <http://csrc.nist.gov/CryptoToolkit/aes/> for more information.
167 config CRYPTO_AES_586
168 tristate "AES cipher algorithms (i586)"
169 depends on CRYPTO && ((X86 || UML_X86) && !64BIT)
171 AES cipher algorithms (FIPS-197). AES uses the Rijndael
174 Rijndael appears to be consistently a very good performer in
175 both hardware and software across a wide range of computing
176 environments regardless of its use in feedback or non-feedback
177 modes. Its key setup time is excellent, and its key agility is
178 good. Rijndael's very low memory requirements make it very well
179 suited for restricted-space environments, in which it also
180 demonstrates excellent performance. Rijndael's operations are
181 among the easiest to defend against power and timing attacks.
183 The AES specifies three key sizes: 128, 192 and 256 bits
185 See <http://csrc.nist.gov/encryption/aes/> for more information.
187 config CRYPTO_AES_X86_64
188 tristate "AES cipher algorithms (x86_64)"
189 depends on CRYPTO && ((X86 || UML_X86) && 64BIT)
191 AES cipher algorithms (FIPS-197). AES uses the Rijndael
194 Rijndael appears to be consistently a very good performer in
195 both hardware and software across a wide range of computing
196 environments regardless of its use in feedback or non-feedback
197 modes. Its key setup time is excellent, and its key agility is
198 good. Rijndael's very low memory requirements make it very well
199 suited for restricted-space environments, in which it also
200 demonstrates excellent performance. Rijndael's operations are
201 among the easiest to defend against power and timing attacks.
203 The AES specifies three key sizes: 128, 192 and 256 bits
205 See <http://csrc.nist.gov/encryption/aes/> for more information.
208 tristate "CAST5 (CAST-128) cipher algorithm"
211 The CAST5 encryption algorithm (synonymous with CAST-128) is
212 described in RFC2144.
215 tristate "CAST6 (CAST-256) cipher algorithm"
218 The CAST6 encryption algorithm (synonymous with CAST-256) is
219 described in RFC2612.
222 tristate "TEA, XTEA and XETA cipher algorithms"
225 TEA cipher algorithm.
227 Tiny Encryption Algorithm is a simple cipher that uses
228 many rounds for security. It is very fast and uses
231 Xtendend Tiny Encryption Algorithm is a modification to
232 the TEA algorithm to address a potential key weakness
233 in the TEA algorithm.
235 Xtendend Encryption Tiny Algorithm is a mis-implementation
236 of the XTEA algorithm for compatibility purposes.
239 tristate "ARC4 cipher algorithm"
242 ARC4 cipher algorithm.
244 ARC4 is a stream cipher using keys ranging from 8 bits to 2048
245 bits in length. This algorithm is required for driver-based
246 WEP, but it should not be for other purposes because of the
247 weakness of the algorithm.
250 tristate "Khazad cipher algorithm"
253 Khazad cipher algorithm.
255 Khazad was a finalist in the initial NESSIE competition. It is
256 an algorithm optimized for 64-bit processors with good performance
257 on 32-bit processors. Khazad uses an 128 bit key size.
260 <http://planeta.terra.com.br/informatica/paulobarreto/KhazadPage.html>
263 tristate "Anubis cipher algorithm"
266 Anubis cipher algorithm.
268 Anubis is a variable key length cipher which can use keys from
269 128 bits to 320 bits in length. It was evaluated as a entrant
270 in the NESSIE competition.
273 <https://www.cosic.esat.kuleuven.ac.be/nessie/reports/>
274 <http://planeta.terra.com.br/informatica/paulobarreto/AnubisPage.html>
277 config CRYPTO_DEFLATE
278 tristate "Deflate compression algorithm"
283 This is the Deflate algorithm (RFC1951), specified for use in
284 IPSec with the IPCOMP protocol (RFC3173, RFC2394).
286 You will most probably want this if using IPSec.
288 config CRYPTO_MICHAEL_MIC
289 tristate "Michael MIC keyed digest algorithm"
292 Michael MIC is used for message integrity protection in TKIP
293 (IEEE 802.11i). This algorithm is required for TKIP, but it
294 should not be used for other purposes because of the weakness
298 tristate "CRC32c CRC algorithm"
302 Castagnoli, et al Cyclic Redundancy-Check Algorithm. Used
303 by iSCSI for header and data digests and by others.
304 See Castagnoli93. This implementation uses lib/libcrc32c.
305 Module will be crc32c.
308 tristate "Testing module"
311 Quick & dirty crypto test module.
313 source "drivers/crypto/Kconfig"