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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# Cryptographic API Configuration
3#
4
5menu "Cryptographic options"
6
7config CRYPTO
8 bool "Cryptographic API"
9 help
10 This option provides the core Cryptographic API.
11
12config CRYPTO_HMAC
13 bool "HMAC support"
14 depends on CRYPTO
15 help
16 HMAC: Keyed-Hashing for Message Authentication (RFC2104).
17 This is required for IPSec.
18
19config CRYPTO_NULL
20 tristate "Null algorithms"
21 depends on CRYPTO
22 help
23 These are 'Null' algorithms, used by IPsec, which do nothing.
24
25config CRYPTO_MD4
26 tristate "MD4 digest algorithm"
27 depends on CRYPTO
28 help
29 MD4 message digest algorithm (RFC1320).
30
31config CRYPTO_MD5
32 tristate "MD5 digest algorithm"
33 depends on CRYPTO
34 help
35 MD5 message digest algorithm (RFC1321).
36
37config CRYPTO_SHA1
38 tristate "SHA1 digest algorithm"
39 depends on CRYPTO
40 help
41 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
42
43config CRYPTO_SHA1_Z990
44 tristate "SHA1 digest algorithm for IBM zSeries z990"
45 depends on CRYPTO && ARCH_S390
46 help
47 SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
48
49config CRYPTO_SHA256
50 tristate "SHA256 digest algorithm"
51 depends on CRYPTO
52 help
53 SHA256 secure hash standard (DFIPS 180-2).
54
55 This version of SHA implements a 256 bit hash with 128 bits of
56 security against collision attacks.
57
58config CRYPTO_SHA512
59 tristate "SHA384 and SHA512 digest algorithms"
60 depends on CRYPTO
61 help
62 SHA512 secure hash standard (DFIPS 180-2).
63
64 This version of SHA implements a 512 bit hash with 256 bits of
65 security against collision attacks.
66
67 This code also includes SHA-384, a 384 bit hash with 192 bits
68 of security against collision attacks.
69
70config CRYPTO_WP512
71 tristate "Whirlpool digest algorithms"
72 depends on CRYPTO
73 help
74 Whirlpool hash algorithm 512, 384 and 256-bit hashes
75
76 Whirlpool-512 is part of the NESSIE cryptographic primitives.
77 Whirlpool will be part of the ISO/IEC 10118-3:2003(E) standard
78
79 See also:
80 <http://planeta.terra.com.br/informatica/paulobarreto/WhirlpoolPage.html>
81
82config CRYPTO_TGR192
83 tristate "Tiger digest algorithms"
84 depends on CRYPTO
85 help
86 Tiger hash algorithm 192, 160 and 128-bit hashes
87
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.
91
92 See also:
93 <http://www.cs.technion.ac.il/~biham/Reports/Tiger/>.
94
95config CRYPTO_DES
96 tristate "DES and Triple DES EDE cipher algorithms"
97 depends on CRYPTO
98 help
99 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
100
101config CRYPTO_DES_Z990
102 tristate "DES and Triple DES cipher algorithms for IBM zSeries z990"
103 depends on CRYPTO && ARCH_S390
104 help
105 DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
106
107config CRYPTO_BLOWFISH
108 tristate "Blowfish cipher algorithm"
109 depends on CRYPTO
110 help
111 Blowfish cipher algorithm, by Bruce Schneier.
112
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".
116
117 See also:
118 <http://www.schneier.com/blowfish.html>
119
120config CRYPTO_TWOFISH
121 tristate "Twofish cipher algorithm"
122 depends on CRYPTO
123 help
124 Twofish cipher algorithm.
125
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
129 bits.
130
131 See also:
132 <http://www.schneier.com/twofish.html>
133
134config CRYPTO_SERPENT
135 tristate "Serpent cipher algorithm"
136 depends on CRYPTO
137 help
138 Serpent cipher algorithm, by Anderson, Biham & Knudsen.
139
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.
143
144 See also:
145 <http://www.cl.cam.ac.uk/~rja14/serpent.html>
146
147config CRYPTO_AES
148 tristate "AES cipher algorithms"
Andreas Steinmetza2a892a2005-07-06 13:55:00 -0700149 depends on CRYPTO && !(X86 || UML_X86)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 help
151 AES cipher algorithms (FIPS-197). AES uses the Rijndael
152 algorithm.
153
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.
162
163 The AES specifies three key sizes: 128, 192 and 256 bits
164
165 See <http://csrc.nist.gov/CryptoToolkit/aes/> for more information.
166
167config CRYPTO_AES_586
168 tristate "AES cipher algorithms (i586)"
Paolo 'Blaisorblade' Giarrussoc45166b2005-05-01 08:58:54 -0700169 depends on CRYPTO && ((X86 || UML_X86) && !64BIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 help
171 AES cipher algorithms (FIPS-197). AES uses the Rijndael
172 algorithm.
173
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.
182
183 The AES specifies three key sizes: 128, 192 and 256 bits
184
185 See <http://csrc.nist.gov/encryption/aes/> for more information.
186
Andreas Steinmetza2a892a2005-07-06 13:55:00 -0700187config CRYPTO_AES_X86_64
188 tristate "AES cipher algorithms (x86_64)"
189 depends on CRYPTO && ((X86 || UML_X86) && 64BIT)
190 help
191 AES cipher algorithms (FIPS-197). AES uses the Rijndael
192 algorithm.
193
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.
202
203 The AES specifies three key sizes: 128, 192 and 256 bits
204
205 See <http://csrc.nist.gov/encryption/aes/> for more information.
206
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207config CRYPTO_CAST5
208 tristate "CAST5 (CAST-128) cipher algorithm"
209 depends on CRYPTO
210 help
211 The CAST5 encryption algorithm (synonymous with CAST-128) is
212 described in RFC2144.
213
214config CRYPTO_CAST6
215 tristate "CAST6 (CAST-256) cipher algorithm"
216 depends on CRYPTO
217 help
218 The CAST6 encryption algorithm (synonymous with CAST-256) is
219 described in RFC2612.
220
221config CRYPTO_TEA
222 tristate "TEA and XTEA cipher algorithms"
223 depends on CRYPTO
224 help
225 TEA cipher algorithm.
226
227 Tiny Encryption Algorithm is a simple cipher that uses
228 many rounds for security. It is very fast and uses
229 little memory.
230
231 Xtendend Tiny Encryption Algorithm is a modification to
232 the TEA algorithm to address a potential key weakness
233 in the TEA algorithm.
234
235config CRYPTO_ARC4
236 tristate "ARC4 cipher algorithm"
237 depends on CRYPTO
238 help
239 ARC4 cipher algorithm.
240
241 ARC4 is a stream cipher using keys ranging from 8 bits to 2048
242 bits in length. This algorithm is required for driver-based
243 WEP, but it should not be for other purposes because of the
244 weakness of the algorithm.
245
246config CRYPTO_KHAZAD
247 tristate "Khazad cipher algorithm"
248 depends on CRYPTO
249 help
250 Khazad cipher algorithm.
251
252 Khazad was a finalist in the initial NESSIE competition. It is
253 an algorithm optimized for 64-bit processors with good performance
254 on 32-bit processors. Khazad uses an 128 bit key size.
255
256 See also:
257 <http://planeta.terra.com.br/informatica/paulobarreto/KhazadPage.html>
258
259config CRYPTO_ANUBIS
260 tristate "Anubis cipher algorithm"
261 depends on CRYPTO
262 help
263 Anubis cipher algorithm.
264
265 Anubis is a variable key length cipher which can use keys from
266 128 bits to 320 bits in length. It was evaluated as a entrant
267 in the NESSIE competition.
268
269 See also:
270 <https://www.cosic.esat.kuleuven.ac.be/nessie/reports/>
271 <http://planeta.terra.com.br/informatica/paulobarreto/AnubisPage.html>
272
273
274config CRYPTO_DEFLATE
275 tristate "Deflate compression algorithm"
276 depends on CRYPTO
277 select ZLIB_INFLATE
278 select ZLIB_DEFLATE
279 help
280 This is the Deflate algorithm (RFC1951), specified for use in
281 IPSec with the IPCOMP protocol (RFC3173, RFC2394).
282
283 You will most probably want this if using IPSec.
284
285config CRYPTO_MICHAEL_MIC
286 tristate "Michael MIC keyed digest algorithm"
287 depends on CRYPTO
288 help
289 Michael MIC is used for message integrity protection in TKIP
290 (IEEE 802.11i). This algorithm is required for TKIP, but it
291 should not be used for other purposes because of the weakness
292 of the algorithm.
293
294config CRYPTO_CRC32C
295 tristate "CRC32c CRC algorithm"
296 depends on CRYPTO
297 select LIBCRC32C
298 help
299 Castagnoli, et al Cyclic Redundancy-Check Algorithm. Used
300 by iSCSI for header and data digests and by others.
301 See Castagnoli93. This implementation uses lib/libcrc32c.
302 Module will be crc32c.
303
304config CRYPTO_TEST
305 tristate "Testing module"
306 depends on CRYPTO
307 help
308 Quick & dirty crypto test module.
309
310source "drivers/crypto/Kconfig"
311endmenu
312