1 /*
2  * Crypto user configuration API.
3  *
4  * Copyright (C) 2011 secunet Security Networks AG
5  * Copyright (C) 2011 Steffen Klassert <steffen.klassert@secunet.com>
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms and conditions of the GNU General Public License,
9  * version 2, as published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14  * more details.
15  *
16  * You should have received a copy of the GNU General Public License along with
17  * this program; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19  */
20 
21 /* Netlink configuration messages.  */
22 enum {
23 	CRYPTO_MSG_BASE = 0x10,
24 	CRYPTO_MSG_NEWALG = 0x10,
25 	CRYPTO_MSG_DELALG,
26 	CRYPTO_MSG_UPDATEALG,
27 	CRYPTO_MSG_GETALG,
28 	__CRYPTO_MSG_MAX
29 };
30 #define CRYPTO_MSG_MAX (__CRYPTO_MSG_MAX - 1)
31 #define CRYPTO_NR_MSGTYPES (CRYPTO_MSG_MAX + 1 - CRYPTO_MSG_BASE)
32 
33 #define CRYPTO_MAX_NAME CRYPTO_MAX_ALG_NAME
34 
35 /* Netlink message attributes.  */
36 enum crypto_attr_type_t {
37 	CRYPTOCFGA_UNSPEC,
38 	CRYPTOCFGA_PRIORITY_VAL,	/* __u32 */
39 	CRYPTOCFGA_REPORT_LARVAL,	/* struct crypto_report_larval */
40 	CRYPTOCFGA_REPORT_HASH,		/* struct crypto_report_hash */
41 	CRYPTOCFGA_REPORT_BLKCIPHER,	/* struct crypto_report_blkcipher */
42 	CRYPTOCFGA_REPORT_AEAD,		/* struct crypto_report_aead */
43 	CRYPTOCFGA_REPORT_COMPRESS,	/* struct crypto_report_comp */
44 	CRYPTOCFGA_REPORT_RNG,		/* struct crypto_report_rng */
45 	CRYPTOCFGA_REPORT_CIPHER,	/* struct crypto_report_cipher */
46 	__CRYPTOCFGA_MAX
47 
48 #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
49 };
50 
51 struct crypto_user_alg {
52 	char cru_name[CRYPTO_MAX_ALG_NAME];
53 	char cru_driver_name[CRYPTO_MAX_ALG_NAME];
54 	char cru_module_name[CRYPTO_MAX_ALG_NAME];
55 	__u32 cru_type;
56 	__u32 cru_mask;
57 	__u32 cru_refcnt;
58 	__u32 cru_flags;
59 };
60 
61 struct crypto_report_larval {
62 	char type[CRYPTO_MAX_NAME];
63 };
64 
65 struct crypto_report_hash {
66 	char type[CRYPTO_MAX_NAME];
67 	unsigned int blocksize;
68 	unsigned int digestsize;
69 };
70 
71 struct crypto_report_cipher {
72 	char type[CRYPTO_MAX_ALG_NAME];
73 	unsigned int blocksize;
74 	unsigned int min_keysize;
75 	unsigned int max_keysize;
76 };
77 
78 struct crypto_report_blkcipher {
79 	char type[CRYPTO_MAX_NAME];
80 	char geniv[CRYPTO_MAX_NAME];
81 	unsigned int blocksize;
82 	unsigned int min_keysize;
83 	unsigned int max_keysize;
84 	unsigned int ivsize;
85 };
86 
87 struct crypto_report_aead {
88 	char type[CRYPTO_MAX_NAME];
89 	char geniv[CRYPTO_MAX_NAME];
90 	unsigned int blocksize;
91 	unsigned int maxauthsize;
92 	unsigned int ivsize;
93 };
94 
95 struct crypto_report_comp {
96 	char type[CRYPTO_MAX_NAME];
97 };
98 
99 struct crypto_report_rng {
100 	char type[CRYPTO_MAX_NAME];
101 	unsigned int seedsize;
102 };
103 
104 #define CRYPTO_REPORT_MAXSIZE (sizeof(struct crypto_user_alg) + \
105 			       sizeof(struct crypto_report_blkcipher))
106