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1da177e4 LT |
1 | # |
2 | # Cryptographic API Configuration | |
3 | # | |
4 | ||
5 | menu "Cryptographic options" | |
6 | ||
7 | config CRYPTO | |
8 | bool "Cryptographic API" | |
9 | help | |
10 | This option provides the core Cryptographic API. | |
11 | ||
12 | config 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 | ||
19 | config CRYPTO_NULL | |
20 | tristate "Null algorithms" | |
21 | depends on CRYPTO | |
22 | help | |
23 | These are 'Null' algorithms, used by IPsec, which do nothing. | |
24 | ||
25 | config CRYPTO_MD4 | |
26 | tristate "MD4 digest algorithm" | |
27 | depends on CRYPTO | |
28 | help | |
29 | MD4 message digest algorithm (RFC1320). | |
30 | ||
31 | config CRYPTO_MD5 | |
32 | tristate "MD5 digest algorithm" | |
33 | depends on CRYPTO | |
34 | help | |
35 | MD5 message digest algorithm (RFC1321). | |
36 | ||
37 | config 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 | ||
43 | config 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 | ||
49 | config 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 | ||
58 | config 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 | ||
70 | config 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 | ||
82 | config 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 | ||
95 | config 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 | ||
101 | config 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 | ||
107 | config 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 | ||
120 | config 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 | ||
134 | config 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 | ||
147 | config CRYPTO_AES | |
148 | tristate "AES cipher algorithms" | |
149 | depends on CRYPTO && !(X86 && !X86_64) | |
150 | 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 | ||
167 | config CRYPTO_AES_586 | |
168 | tristate "AES cipher algorithms (i586)" | |
169 | depends on CRYPTO && (X86 && !X86_64) | |
170 | 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 | ||
187 | config CRYPTO_CAST5 | |
188 | tristate "CAST5 (CAST-128) cipher algorithm" | |
189 | depends on CRYPTO | |
190 | help | |
191 | The CAST5 encryption algorithm (synonymous with CAST-128) is | |
192 | described in RFC2144. | |
193 | ||
194 | config CRYPTO_CAST6 | |
195 | tristate "CAST6 (CAST-256) cipher algorithm" | |
196 | depends on CRYPTO | |
197 | help | |
198 | The CAST6 encryption algorithm (synonymous with CAST-256) is | |
199 | described in RFC2612. | |
200 | ||
201 | config CRYPTO_TEA | |
202 | tristate "TEA and XTEA cipher algorithms" | |
203 | depends on CRYPTO | |
204 | help | |
205 | TEA cipher algorithm. | |
206 | ||
207 | Tiny Encryption Algorithm is a simple cipher that uses | |
208 | many rounds for security. It is very fast and uses | |
209 | little memory. | |
210 | ||
211 | Xtendend Tiny Encryption Algorithm is a modification to | |
212 | the TEA algorithm to address a potential key weakness | |
213 | in the TEA algorithm. | |
214 | ||
215 | config CRYPTO_ARC4 | |
216 | tristate "ARC4 cipher algorithm" | |
217 | depends on CRYPTO | |
218 | help | |
219 | ARC4 cipher algorithm. | |
220 | ||
221 | ARC4 is a stream cipher using keys ranging from 8 bits to 2048 | |
222 | bits in length. This algorithm is required for driver-based | |
223 | WEP, but it should not be for other purposes because of the | |
224 | weakness of the algorithm. | |
225 | ||
226 | config CRYPTO_KHAZAD | |
227 | tristate "Khazad cipher algorithm" | |
228 | depends on CRYPTO | |
229 | help | |
230 | Khazad cipher algorithm. | |
231 | ||
232 | Khazad was a finalist in the initial NESSIE competition. It is | |
233 | an algorithm optimized for 64-bit processors with good performance | |
234 | on 32-bit processors. Khazad uses an 128 bit key size. | |
235 | ||
236 | See also: | |
237 | <http://planeta.terra.com.br/informatica/paulobarreto/KhazadPage.html> | |
238 | ||
239 | config CRYPTO_ANUBIS | |
240 | tristate "Anubis cipher algorithm" | |
241 | depends on CRYPTO | |
242 | help | |
243 | Anubis cipher algorithm. | |
244 | ||
245 | Anubis is a variable key length cipher which can use keys from | |
246 | 128 bits to 320 bits in length. It was evaluated as a entrant | |
247 | in the NESSIE competition. | |
248 | ||
249 | See also: | |
250 | <https://www.cosic.esat.kuleuven.ac.be/nessie/reports/> | |
251 | <http://planeta.terra.com.br/informatica/paulobarreto/AnubisPage.html> | |
252 | ||
253 | ||
254 | config CRYPTO_DEFLATE | |
255 | tristate "Deflate compression algorithm" | |
256 | depends on CRYPTO | |
257 | select ZLIB_INFLATE | |
258 | select ZLIB_DEFLATE | |
259 | help | |
260 | This is the Deflate algorithm (RFC1951), specified for use in | |
261 | IPSec with the IPCOMP protocol (RFC3173, RFC2394). | |
262 | ||
263 | You will most probably want this if using IPSec. | |
264 | ||
265 | config CRYPTO_MICHAEL_MIC | |
266 | tristate "Michael MIC keyed digest algorithm" | |
267 | depends on CRYPTO | |
268 | help | |
269 | Michael MIC is used for message integrity protection in TKIP | |
270 | (IEEE 802.11i). This algorithm is required for TKIP, but it | |
271 | should not be used for other purposes because of the weakness | |
272 | of the algorithm. | |
273 | ||
274 | config CRYPTO_CRC32C | |
275 | tristate "CRC32c CRC algorithm" | |
276 | depends on CRYPTO | |
277 | select LIBCRC32C | |
278 | help | |
279 | Castagnoli, et al Cyclic Redundancy-Check Algorithm. Used | |
280 | by iSCSI for header and data digests and by others. | |
281 | See Castagnoli93. This implementation uses lib/libcrc32c. | |
282 | Module will be crc32c. | |
283 | ||
284 | config CRYPTO_TEST | |
285 | tristate "Testing module" | |
286 | depends on CRYPTO | |
287 | help | |
288 | Quick & dirty crypto test module. | |
289 | ||
290 | source "drivers/crypto/Kconfig" | |
291 | endmenu | |
292 |