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8#ifndef _CRYPTO_INTERNAL_HASH_H
9#define _CRYPTO_INTERNAL_HASH_H
10
11#include <crypto/algapi.h>
12#include <crypto/hash.h>
13
14struct ahash_request;
15struct scatterlist;
16
17struct crypto_hash_walk {
18 char *data;
19
20 unsigned int offset;
21 unsigned int alignmask;
22
23 struct page *pg;
24 unsigned int entrylen;
25
26 unsigned int total;
27 struct scatterlist *sg;
28
29 unsigned int flags;
30};
31
32struct ahash_instance {
33 void (*free)(struct ahash_instance *inst);
34 union {
35 struct {
36 char head[offsetof(struct ahash_alg, halg.base)];
37 struct crypto_instance base;
38 } s;
39 struct ahash_alg alg;
40 };
41};
42
43struct shash_instance {
44 void (*free)(struct shash_instance *inst);
45 union {
46 struct {
47 char head[offsetof(struct shash_alg, base)];
48 struct crypto_instance base;
49 } s;
50 struct shash_alg alg;
51 };
52};
53
54struct crypto_ahash_spawn {
55 struct crypto_spawn base;
56};
57
58struct crypto_shash_spawn {
59 struct crypto_spawn base;
60};
61
62int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
63int crypto_hash_walk_first(struct ahash_request *req,
64 struct crypto_hash_walk *walk);
65
66static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
67{
68 return !(walk->entrylen | walk->total);
69}
70
71int crypto_register_ahash(struct ahash_alg *alg);
72void crypto_unregister_ahash(struct ahash_alg *alg);
73int crypto_register_ahashes(struct ahash_alg *algs, int count);
74void crypto_unregister_ahashes(struct ahash_alg *algs, int count);
75int ahash_register_instance(struct crypto_template *tmpl,
76 struct ahash_instance *inst);
77
78bool crypto_shash_alg_has_setkey(struct shash_alg *alg);
79
80static inline bool crypto_shash_alg_needs_key(struct shash_alg *alg)
81{
82 return crypto_shash_alg_has_setkey(alg) &&
83 !(alg->base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY);
84}
85
86bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg);
87
88int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
89 struct crypto_instance *inst,
90 const char *name, u32 type, u32 mask);
91
92static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
93{
94 crypto_drop_spawn(&spawn->base);
95}
96
97static inline struct hash_alg_common *crypto_spawn_ahash_alg(
98 struct crypto_ahash_spawn *spawn)
99{
100 return __crypto_hash_alg_common(spawn->base.alg);
101}
102
103int crypto_register_shash(struct shash_alg *alg);
104void crypto_unregister_shash(struct shash_alg *alg);
105int crypto_register_shashes(struct shash_alg *algs, int count);
106void crypto_unregister_shashes(struct shash_alg *algs, int count);
107int shash_register_instance(struct crypto_template *tmpl,
108 struct shash_instance *inst);
109void shash_free_singlespawn_instance(struct shash_instance *inst);
110
111int crypto_grab_shash(struct crypto_shash_spawn *spawn,
112 struct crypto_instance *inst,
113 const char *name, u32 type, u32 mask);
114
115static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
116{
117 crypto_drop_spawn(&spawn->base);
118}
119
120static inline struct shash_alg *crypto_spawn_shash_alg(
121 struct crypto_shash_spawn *spawn)
122{
123 return __crypto_shash_alg(spawn->base.alg);
124}
125
126int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
127int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
128int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
129
130int crypto_init_shash_ops_async(struct crypto_tfm *tfm);
131
132static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
133{
134 return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
135}
136
137static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
138{
139 return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
140 halg);
141}
142
143static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
144 unsigned int reqsize)
145{
146 tfm->reqsize = reqsize;
147}
148
149static inline struct crypto_instance *ahash_crypto_instance(
150 struct ahash_instance *inst)
151{
152 return &inst->s.base;
153}
154
155static inline struct ahash_instance *ahash_instance(
156 struct crypto_instance *inst)
157{
158 return container_of(inst, struct ahash_instance, s.base);
159}
160
161static inline struct ahash_instance *ahash_alg_instance(
162 struct crypto_ahash *ahash)
163{
164 return ahash_instance(crypto_tfm_alg_instance(&ahash->base));
165}
166
167static inline void *ahash_instance_ctx(struct ahash_instance *inst)
168{
169 return crypto_instance_ctx(ahash_crypto_instance(inst));
170}
171
172static inline void ahash_request_complete(struct ahash_request *req, int err)
173{
174 req->base.complete(&req->base, err);
175}
176
177static inline u32 ahash_request_flags(struct ahash_request *req)
178{
179 return req->base.flags;
180}
181
182static inline struct crypto_ahash *crypto_spawn_ahash(
183 struct crypto_ahash_spawn *spawn)
184{
185 return crypto_spawn_tfm2(&spawn->base);
186}
187
188static inline int ahash_enqueue_request(struct crypto_queue *queue,
189 struct ahash_request *request)
190{
191 return crypto_enqueue_request(queue, &request->base);
192}
193
194static inline struct ahash_request *ahash_dequeue_request(
195 struct crypto_queue *queue)
196{
197 return ahash_request_cast(crypto_dequeue_request(queue));
198}
199
200static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
201{
202 return crypto_tfm_ctx(&tfm->base);
203}
204
205static inline struct crypto_instance *shash_crypto_instance(
206 struct shash_instance *inst)
207{
208 return &inst->s.base;
209}
210
211static inline struct shash_instance *shash_instance(
212 struct crypto_instance *inst)
213{
214 return container_of(inst, struct shash_instance, s.base);
215}
216
217static inline struct shash_instance *shash_alg_instance(
218 struct crypto_shash *shash)
219{
220 return shash_instance(crypto_tfm_alg_instance(&shash->base));
221}
222
223static inline void *shash_instance_ctx(struct shash_instance *inst)
224{
225 return crypto_instance_ctx(shash_crypto_instance(inst));
226}
227
228static inline struct crypto_shash *crypto_spawn_shash(
229 struct crypto_shash_spawn *spawn)
230{
231 return crypto_spawn_tfm2(&spawn->base);
232}
233
234static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
235{
236 return crypto_tfm_ctx_aligned(&tfm->base);
237}
238
239static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
240{
241 return container_of(tfm, struct crypto_shash, base);
242}
243
244#endif
245
246
