source: src/linux/universal/linux-3.18/include/crypto/internal/hash.h @ 31885

Last change on this file since 31885 was 31885, checked in by brainslayer, 6 weeks ago

update

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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);
60int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
61                                  struct crypto_hash_walk *walk,
62                                  struct scatterlist *sg, unsigned int len);
63
64static inline int crypto_ahash_walk_done(struct crypto_hash_walk *walk,
65                                         int err)
66{
67        return crypto_hash_walk_done(walk, err);
68}
69
70static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
71{
72        return !(walk->entrylen | walk->total);
73}
74
75static inline int crypto_ahash_walk_last(struct crypto_hash_walk *walk)
76{
77        return crypto_hash_walk_last(walk);
78}
79
80int crypto_register_ahash(struct ahash_alg *alg);
81int crypto_unregister_ahash(struct ahash_alg *alg);
82int ahash_register_instance(struct crypto_template *tmpl,
83                            struct ahash_instance *inst);
84void ahash_free_instance(struct crypto_instance *inst);
85
86int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
87                            struct hash_alg_common *alg,
88                            struct crypto_instance *inst);
89
90static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
91{
92        crypto_drop_spawn(&spawn->base);
93}
94
95struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
96
97int crypto_register_shash(struct shash_alg *alg);
98int crypto_unregister_shash(struct shash_alg *alg);
99int crypto_register_shashes(struct shash_alg *algs, int count);
100int crypto_unregister_shashes(struct shash_alg *algs, int count);
101int shash_register_instance(struct crypto_template *tmpl,
102                            struct shash_instance *inst);
103void shash_free_instance(struct crypto_instance *inst);
104
105int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
106                            struct shash_alg *alg,
107                            struct crypto_instance *inst);
108
109static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
110{
111        crypto_drop_spawn(&spawn->base);
112}
113
114struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
115
116int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
117int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
118int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
119
120int shash_ahash_mcryptd_update(struct ahash_request *req,
121                               struct shash_desc *desc);
122int shash_ahash_mcryptd_final(struct ahash_request *req,
123                              struct shash_desc *desc);
124int shash_ahash_mcryptd_finup(struct ahash_request *req,
125                              struct shash_desc *desc);
126int shash_ahash_mcryptd_digest(struct ahash_request *req,
127                               struct shash_desc *desc);
128
129int crypto_init_shash_ops_async(struct crypto_tfm *tfm);
130
131static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
132{
133        return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
134}
135
136static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
137{
138        return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
139                            halg);
140}
141
142static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
143                                            unsigned int reqsize)
144{
145        tfm->reqsize = reqsize;
146}
147
148static inline struct crypto_instance *ahash_crypto_instance(
149        struct ahash_instance *inst)
150{
151        return container_of(&inst->alg.halg.base, struct crypto_instance, alg);
152}
153
154static inline struct ahash_instance *ahash_instance(
155        struct crypto_instance *inst)
156{
157        return container_of(&inst->alg, struct ahash_instance, alg.halg.base);
158}
159
160static inline void *ahash_instance_ctx(struct ahash_instance *inst)
161{
162        return crypto_instance_ctx(ahash_crypto_instance(inst));
163}
164
165static inline unsigned int ahash_instance_headroom(void)
166{
167        return sizeof(struct ahash_alg) - sizeof(struct crypto_alg);
168}
169
170static inline struct ahash_instance *ahash_alloc_instance(
171        const char *name, struct crypto_alg *alg)
172{
173        return crypto_alloc_instance2(name, alg, ahash_instance_headroom());
174}
175
176static inline void ahash_request_complete(struct ahash_request *req, int err)
177{
178        req->base.complete(&req->base, err);
179}
180
181static inline u32 ahash_request_flags(struct ahash_request *req)
182{
183        return req->base.flags;
184}
185
186static inline struct crypto_ahash *crypto_spawn_ahash(
187        struct crypto_ahash_spawn *spawn)
188{
189        return crypto_spawn_tfm2(&spawn->base);
190}
191
192static inline int ahash_enqueue_request(struct crypto_queue *queue,
193                                             struct ahash_request *request)
194{
195        return crypto_enqueue_request(queue, &request->base);
196}
197
198static inline struct ahash_request *ahash_dequeue_request(
199        struct crypto_queue *queue)
200{
201        return ahash_request_cast(crypto_dequeue_request(queue));
202}
203
204static inline int ahash_tfm_in_queue(struct crypto_queue *queue,
205                                          struct crypto_ahash *tfm)
206{
207        return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm));
208}
209
210static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
211{
212        return crypto_tfm_ctx(&tfm->base);
213}
214
215static inline struct crypto_instance *shash_crypto_instance(
216        struct shash_instance *inst)
217{
218        return container_of(&inst->alg.base, struct crypto_instance, alg);
219}
220
221static inline struct shash_instance *shash_instance(
222        struct crypto_instance *inst)
223{
224        return container_of(__crypto_shash_alg(&inst->alg),
225                            struct shash_instance, alg);
226}
227
228static inline void *shash_instance_ctx(struct shash_instance *inst)
229{
230        return crypto_instance_ctx(shash_crypto_instance(inst));
231}
232
233static inline struct shash_instance *shash_alloc_instance(
234        const char *name, struct crypto_alg *alg)
235{
236        return crypto_alloc_instance2(name, alg,
237                                      sizeof(struct shash_alg) - sizeof(*alg));
238}
239
240static inline struct crypto_shash *crypto_spawn_shash(
241        struct crypto_shash_spawn *spawn)
242{
243        return crypto_spawn_tfm2(&spawn->base);
244}
245
246static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
247{
248        return crypto_tfm_ctx_aligned(&tfm->base);
249}
250
251static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
252{
253        return container_of(tfm, struct crypto_shash, base);
254}
255
256#endif  /* _CRYPTO_INTERNAL_HASH_H */
257
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