Commit | Line | Data |
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378f4f51 HX |
1 | /* |
2 | * Symmetric key ciphers. | |
3 | * | |
4 | * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | */ | |
12 | ||
13 | #ifndef _CRYPTO_INTERNAL_SKCIPHER_H | |
14 | #define _CRYPTO_INTERNAL_SKCIPHER_H | |
15 | ||
16 | #include <crypto/algapi.h> | |
61da88e2 | 17 | #include <crypto/skcipher.h> |
b286d8b1 | 18 | #include <linux/list.h> |
ecfc4329 HX |
19 | #include <linux/types.h> |
20 | ||
b286d8b1 | 21 | struct aead_request; |
ecfc4329 | 22 | struct rtattr; |
378f4f51 | 23 | |
4e6c3df4 HX |
24 | struct skcipher_instance { |
25 | void (*free)(struct skcipher_instance *inst); | |
26 | union { | |
27 | struct { | |
28 | char head[offsetof(struct skcipher_alg, base)]; | |
29 | struct crypto_instance base; | |
30 | } s; | |
31 | struct skcipher_alg alg; | |
32 | }; | |
33 | }; | |
34 | ||
378f4f51 HX |
35 | struct crypto_skcipher_spawn { |
36 | struct crypto_spawn base; | |
37 | }; | |
38 | ||
b286d8b1 HX |
39 | struct skcipher_walk { |
40 | union { | |
41 | struct { | |
42 | struct page *page; | |
43 | unsigned long offset; | |
44 | } phys; | |
45 | ||
46 | struct { | |
47 | u8 *page; | |
48 | void *addr; | |
49 | } virt; | |
50 | } src, dst; | |
51 | ||
52 | struct scatter_walk in; | |
53 | unsigned int nbytes; | |
54 | ||
55 | struct scatter_walk out; | |
56 | unsigned int total; | |
57 | ||
58 | struct list_head buffers; | |
59 | ||
60 | u8 *page; | |
61 | u8 *buffer; | |
62 | u8 *oiv; | |
63 | void *iv; | |
64 | ||
65 | unsigned int ivsize; | |
66 | ||
67 | int flags; | |
68 | unsigned int blocksize; | |
c821f6ab | 69 | unsigned int stride; |
b286d8b1 HX |
70 | unsigned int alignmask; |
71 | }; | |
72 | ||
61da88e2 HX |
73 | extern const struct crypto_type crypto_givcipher_type; |
74 | ||
4e6c3df4 HX |
75 | static inline struct crypto_instance *skcipher_crypto_instance( |
76 | struct skcipher_instance *inst) | |
77 | { | |
78 | return &inst->s.base; | |
79 | } | |
80 | ||
81 | static inline struct skcipher_instance *skcipher_alg_instance( | |
82 | struct crypto_skcipher *skcipher) | |
83 | { | |
84 | return container_of(crypto_skcipher_alg(skcipher), | |
85 | struct skcipher_instance, alg); | |
86 | } | |
87 | ||
88 | static inline void *skcipher_instance_ctx(struct skcipher_instance *inst) | |
89 | { | |
90 | return crypto_instance_ctx(skcipher_crypto_instance(inst)); | |
91 | } | |
92 | ||
93 | static inline void skcipher_request_complete(struct skcipher_request *req, int err) | |
94 | { | |
95 | req->base.complete(&req->base, err); | |
96 | } | |
97 | ||
378f4f51 HX |
98 | static inline void crypto_set_skcipher_spawn( |
99 | struct crypto_skcipher_spawn *spawn, struct crypto_instance *inst) | |
100 | { | |
101 | crypto_set_spawn(&spawn->base, inst); | |
102 | } | |
103 | ||
104 | int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name, | |
105 | u32 type, u32 mask); | |
3a01d0ee | 106 | |
378f4f51 HX |
107 | static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn) |
108 | { | |
109 | crypto_drop_spawn(&spawn->base); | |
110 | } | |
111 | ||
3a01d0ee | 112 | static inline struct skcipher_alg *crypto_skcipher_spawn_alg( |
378f4f51 HX |
113 | struct crypto_skcipher_spawn *spawn) |
114 | { | |
3a01d0ee | 115 | return container_of(spawn->base.alg, struct skcipher_alg, base); |
378f4f51 HX |
116 | } |
117 | ||
4e6c3df4 HX |
118 | static inline struct skcipher_alg *crypto_spawn_skcipher_alg( |
119 | struct crypto_skcipher_spawn *spawn) | |
120 | { | |
3a01d0ee | 121 | return crypto_skcipher_spawn_alg(spawn); |
4e6c3df4 HX |
122 | } |
123 | ||
3a01d0ee | 124 | static inline struct crypto_skcipher *crypto_spawn_skcipher( |
378f4f51 HX |
125 | struct crypto_skcipher_spawn *spawn) |
126 | { | |
3a01d0ee | 127 | return crypto_spawn_tfm2(&spawn->base); |
378f4f51 HX |
128 | } |
129 | ||
4e6c3df4 HX |
130 | static inline void crypto_skcipher_set_reqsize( |
131 | struct crypto_skcipher *skcipher, unsigned int reqsize) | |
132 | { | |
133 | skcipher->reqsize = reqsize; | |
134 | } | |
135 | ||
136 | int crypto_register_skcipher(struct skcipher_alg *alg); | |
137 | void crypto_unregister_skcipher(struct skcipher_alg *alg); | |
138 | int crypto_register_skciphers(struct skcipher_alg *algs, int count); | |
139 | void crypto_unregister_skciphers(struct skcipher_alg *algs, int count); | |
140 | int skcipher_register_instance(struct crypto_template *tmpl, | |
141 | struct skcipher_instance *inst); | |
142 | ||
b286d8b1 HX |
143 | int skcipher_walk_done(struct skcipher_walk *walk, int err); |
144 | int skcipher_walk_virt(struct skcipher_walk *walk, | |
145 | struct skcipher_request *req, | |
146 | bool atomic); | |
147 | void skcipher_walk_atomise(struct skcipher_walk *walk); | |
148 | int skcipher_walk_async(struct skcipher_walk *walk, | |
149 | struct skcipher_request *req); | |
150 | int skcipher_walk_aead(struct skcipher_walk *walk, struct aead_request *req, | |
151 | bool atomic); | |
34bc085c HX |
152 | int skcipher_walk_aead_encrypt(struct skcipher_walk *walk, |
153 | struct aead_request *req, bool atomic); | |
154 | int skcipher_walk_aead_decrypt(struct skcipher_walk *walk, | |
155 | struct aead_request *req, bool atomic); | |
b286d8b1 HX |
156 | void skcipher_walk_complete(struct skcipher_walk *walk, int err); |
157 | ||
15c67286 HX |
158 | static inline void ablkcipher_request_complete(struct ablkcipher_request *req, |
159 | int err) | |
160 | { | |
161 | req->base.complete(&req->base, err); | |
162 | } | |
163 | ||
3631c650 HX |
164 | static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req) |
165 | { | |
166 | return req->base.flags; | |
167 | } | |
168 | ||
7a7ffe65 HX |
169 | static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm) |
170 | { | |
171 | return crypto_tfm_ctx(&tfm->base); | |
172 | } | |
173 | ||
174 | static inline void *skcipher_request_ctx(struct skcipher_request *req) | |
175 | { | |
176 | return req->__ctx; | |
177 | } | |
178 | ||
179 | static inline u32 skcipher_request_flags(struct skcipher_request *req) | |
180 | { | |
181 | return req->base.flags; | |
182 | } | |
183 | ||
4e6c3df4 HX |
184 | static inline unsigned int crypto_skcipher_alg_min_keysize( |
185 | struct skcipher_alg *alg) | |
186 | { | |
187 | if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) == | |
188 | CRYPTO_ALG_TYPE_BLKCIPHER) | |
189 | return alg->base.cra_blkcipher.min_keysize; | |
190 | ||
191 | if (alg->base.cra_ablkcipher.encrypt) | |
192 | return alg->base.cra_ablkcipher.min_keysize; | |
193 | ||
194 | return alg->min_keysize; | |
195 | } | |
196 | ||
197 | static inline unsigned int crypto_skcipher_alg_max_keysize( | |
198 | struct skcipher_alg *alg) | |
199 | { | |
200 | if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) == | |
201 | CRYPTO_ALG_TYPE_BLKCIPHER) | |
202 | return alg->base.cra_blkcipher.max_keysize; | |
203 | ||
204 | if (alg->base.cra_ablkcipher.encrypt) | |
205 | return alg->base.cra_ablkcipher.max_keysize; | |
206 | ||
207 | return alg->max_keysize; | |
208 | } | |
209 | ||
378f4f51 HX |
210 | #endif /* _CRYPTO_INTERNAL_SKCIPHER_H */ |
211 |