Kconfig

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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_DES
71	tristate "DES and Triple DES EDE cipher algorithms"
72	depends on CRYPTO
73	help
74	DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
75
76	config CRYPTO_DES_Z990
77	tristate "DES and Triple DES cipher algorithms for IBM zSeries z990"
78	depends on CRYPTO && ARCH_S390
79	help
80	DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
81
82	config CRYPTO_BLOWFISH
83	tristate "Blowfish cipher algorithm"
84	depends on CRYPTO
85	help
86	Blowfish cipher algorithm, by Bruce Schneier.
87
88	This is a variable key length cipher which can use keys from 32
89	bits to 448 bits in length. It's fast, simple and specifically
90	designed for use on "large microprocessors".
91
92	See also:
93	http://www.schneier.com/blowfish.html
94
95	config CRYPTO_TWOFISH
96	tristate "Twofish cipher algorithm"
97	depends on CRYPTO
98	help
99	Twofish cipher algorithm.
100
101	Twofish was submitted as an AES (Advanced Encryption Standard)
102	candidate cipher by researchers at CounterPane Systems. It is a
103	16 round block cipher supporting key sizes of 128, 192, and 256
104	bits.
105
106	See also:
107	http://www.schneier.com/twofish.html
108
109	config CRYPTO_SERPENT
110	tristate "Serpent cipher algorithm"
111	depends on CRYPTO
112	help
113	Serpent cipher algorithm, by Anderson, Biham & Knudsen.
114
115	Keys are allowed to be from 0 to 256 bits in length, in steps
116	of 8 bits.
117
118	See also:
119	http://www.cl.cam.ac.uk/~rja14/serpent.html
120
121	config CRYPTO_AES
122	tristate "AES cipher algorithms"
123	depends on CRYPTO
124	help
125	AES cipher algorithms (FIPS-197). AES uses the Rijndael
126	algorithm.
127
128	Rijndael appears to be consistently a very good performer in
129	both hardware and software across a wide range of computing
130	environments regardless of its use in feedback or non-feedback
131	modes. Its key setup time is excellent, and its key agility is
132	good. Rijndael's very low memory requirements make it very well
133	suited for restricted-space environments, in which it also
134	demonstrates excellent performance. Rijndael's operations are
135	among the easiest to defend against power and timing attacks.
136
137	The AES specifies three key sizes: 128, 192 and 256 bits
138
139	See http://csrc.nist.gov/CryptoToolkit/aes/ for more information.
140
141	config CRYPTO_CAST5
142	tristate "CAST5 (CAST-128) cipher algorithm"
143	depends on CRYPTO
144	help
145	The CAST5 encryption algorithm (synonymous with CAST-128) is
146	described in RFC2144.
147
148	config CRYPTO_CAST6
149	tristate "CAST6 (CAST-256) cipher algorithm"
150	depends on CRYPTO
151	help
152	The CAST6 encryption algorithm (synonymous with CAST-256) is
153	described in RFC2612.
154
155	config CRYPTO_ARC4
156	tristate "ARC4 cipher algorithm"
157	depends on CRYPTO
158	help
159	ARC4 cipher algorithm.
160
161	ARC4 is a stream cipher using keys ranging from 8 bits to 2048
162	bits in length. This algorithm is required for driver-based
163	WEP, but it should not be for other purposes because of the
164	weakness of the algorithm.
165
166	config CRYPTO_DEFLATE
167	tristate "Deflate compression algorithm"
168	depends on CRYPTO
169	select ZLIB_INFLATE
170	select ZLIB_DEFLATE
171	help
172	This is the Deflate algorithm (RFC1951), specified for use in
173	IPSec with the IPCOMP protocol (RFC3173, RFC2394).
174
175	You will most probably want this if using IPSec.
176
177	config CRYPTO_MICHAEL_MIC
178	tristate "Michael MIC keyed digest algorithm"
179	depends on CRYPTO
180	help
181	Michael MIC is used for message integrity protection in TKIP
182	(IEEE 802.11i). This algorithm is required for TKIP, but it
183	should not be used for other purposes because of the weakness
184	of the algorithm.
185
186	config CRYPTO_CRC32C
187	tristate "CRC32c CRC algorithm"
188	depends on CRYPTO
189	select LIBCRC32C
190	help
191	Castagnoli, et al Cyclic Redundancy-Check Algorithm. Used
192	by iSCSI for header and data digests and by others.
193	See Castagnoli93. This implementation uses lib/libcrc32c.
194	Module will be crc32c.
195
196	config CRYPTO_TEST
197	tristate "Testing module"
198	depends on CRYPTO
199	help
200	Quick & dirty crypto test module.
201
202	endmenu
203

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