source: src/linux/universal/linux-4.9/include/crypto/internal/hash.h @ 31885

Last change on this file since 31885 was 31885, checked in by brainslayer, 3 months ago

update

File size: 6.5 KB
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1/*
2 * Hash algorithms.
3 *
4 * Copyright (c) 2008 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_HASH_H
14#define _CRYPTO_INTERNAL_HASH_H
15
16#include <crypto/algapi.h>
17#include <crypto/hash.h>
18
19struct ahash_request;
20struct scatterlist;
21
22struct crypto_hash_walk {
23        char *data;
24
25        unsigned int offset;
26        unsigned int alignmask;
27
28        struct page *pg;
29        unsigned int entrylen;
30
31        unsigned int total;
32        struct scatterlist *sg;
33
34        unsigned int flags;
35};
36
37struct ahash_instance {
38        struct ahash_alg alg;
39};
40
41struct shash_instance {
42        struct shash_alg alg;
43};
44
45struct crypto_ahash_spawn {
46        struct crypto_spawn base;
47};
48
49struct crypto_shash_spawn {
50        struct crypto_spawn base;
51};
52
53extern const struct crypto_type crypto_ahash_type;
54
55int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
56int crypto_hash_walk_first(struct ahash_request *req,
57                           struct crypto_hash_walk *walk);
58int crypto_ahash_walk_first(struct ahash_request *req,
59                           struct crypto_hash_walk *walk);
60
61static inline int crypto_ahash_walk_done(struct crypto_hash_walk *walk,
62                                         int err)
63{
64        return crypto_hash_walk_done(walk, err);
65}
66
67static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
68{
69        return !(walk->entrylen | walk->total);
70}
71
72static inline int crypto_ahash_walk_last(struct crypto_hash_walk *walk)
73{
74        return crypto_hash_walk_last(walk);
75}
76
77int crypto_register_ahash(struct ahash_alg *alg);
78int crypto_unregister_ahash(struct ahash_alg *alg);
79int ahash_register_instance(struct crypto_template *tmpl,
80                            struct ahash_instance *inst);
81void ahash_free_instance(struct crypto_instance *inst);
82
83int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
84                            struct hash_alg_common *alg,
85                            struct crypto_instance *inst);
86
87static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
88{
89        crypto_drop_spawn(&spawn->base);
90}
91
92struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
93
94int crypto_register_shash(struct shash_alg *alg);
95int crypto_unregister_shash(struct shash_alg *alg);
96int crypto_register_shashes(struct shash_alg *algs, int count);
97int crypto_unregister_shashes(struct shash_alg *algs, int count);
98int shash_register_instance(struct crypto_template *tmpl,
99                            struct shash_instance *inst);
100void shash_free_instance(struct crypto_instance *inst);
101
102int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
103                            struct shash_alg *alg,
104                            struct crypto_instance *inst);
105
106static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
107{
108        crypto_drop_spawn(&spawn->base);
109}
110
111struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
112
113int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
114int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
115int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
116
117int ahash_mcryptd_update(struct ahash_request *desc);
118int ahash_mcryptd_final(struct ahash_request *desc);
119int ahash_mcryptd_finup(struct ahash_request *desc);
120int ahash_mcryptd_digest(struct ahash_request *desc);
121
122int crypto_init_shash_ops_async(struct crypto_tfm *tfm);
123
124static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
125{
126        return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
127}
128
129static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
130{
131        return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
132                            halg);
133}
134
135static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
136                                            unsigned int reqsize)
137{
138        tfm->reqsize = reqsize;
139}
140
141static inline struct crypto_instance *ahash_crypto_instance(
142        struct ahash_instance *inst)
143{
144        return container_of(&inst->alg.halg.base, struct crypto_instance, alg);
145}
146
147static inline struct ahash_instance *ahash_instance(
148        struct crypto_instance *inst)
149{
150        return container_of(&inst->alg, struct ahash_instance, alg.halg.base);
151}
152
153static inline void *ahash_instance_ctx(struct ahash_instance *inst)
154{
155        return crypto_instance_ctx(ahash_crypto_instance(inst));
156}
157
158static inline unsigned int ahash_instance_headroom(void)
159{
160        return sizeof(struct ahash_alg) - sizeof(struct crypto_alg);
161}
162
163static inline struct ahash_instance *ahash_alloc_instance(
164        const char *name, struct crypto_alg *alg)
165{
166        return crypto_alloc_instance2(name, alg, ahash_instance_headroom());
167}
168
169static inline void ahash_request_complete(struct ahash_request *req, int err)
170{
171        req->base.complete(&req->base, err);
172}
173
174static inline u32 ahash_request_flags(struct ahash_request *req)
175{
176        return req->base.flags;
177}
178
179static inline struct crypto_ahash *crypto_spawn_ahash(
180        struct crypto_ahash_spawn *spawn)
181{
182        return crypto_spawn_tfm2(&spawn->base);
183}
184
185static inline int ahash_enqueue_request(struct crypto_queue *queue,
186                                             struct ahash_request *request)
187{
188        return crypto_enqueue_request(queue, &request->base);
189}
190
191static inline struct ahash_request *ahash_dequeue_request(
192        struct crypto_queue *queue)
193{
194        return ahash_request_cast(crypto_dequeue_request(queue));
195}
196
197static inline int ahash_tfm_in_queue(struct crypto_queue *queue,
198                                          struct crypto_ahash *tfm)
199{
200        return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm));
201}
202
203static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
204{
205        return crypto_tfm_ctx(&tfm->base);
206}
207
208static inline struct crypto_instance *shash_crypto_instance(
209        struct shash_instance *inst)
210{
211        return container_of(&inst->alg.base, struct crypto_instance, alg);
212}
213
214static inline struct shash_instance *shash_instance(
215        struct crypto_instance *inst)
216{
217        return container_of(__crypto_shash_alg(&inst->alg),
218                            struct shash_instance, alg);
219}
220
221static inline void *shash_instance_ctx(struct shash_instance *inst)
222{
223        return crypto_instance_ctx(shash_crypto_instance(inst));
224}
225
226static inline struct shash_instance *shash_alloc_instance(
227        const char *name, struct crypto_alg *alg)
228{
229        return crypto_alloc_instance2(name, alg,
230                                      sizeof(struct shash_alg) - sizeof(*alg));
231}
232
233static inline struct crypto_shash *crypto_spawn_shash(
234        struct crypto_shash_spawn *spawn)
235{
236        return crypto_spawn_tfm2(&spawn->base);
237}
238
239static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
240{
241        return crypto_tfm_ctx_aligned(&tfm->base);
242}
243
244static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
245{
246        return container_of(tfm, struct crypto_shash, base);
247}
248
249#endif  /* _CRYPTO_INTERNAL_HASH_H */
250
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