Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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 shash_ahash_mcryptd_update(struct ahash_request *req,
118 struct shash_desc *desc);
119int shash_ahash_mcryptd_final(struct ahash_request *req,
120 struct shash_desc *desc);
121int shash_ahash_mcryptd_finup(struct ahash_request *req,
122 struct shash_desc *desc);
123int shash_ahash_mcryptd_digest(struct ahash_request *req,
124 struct shash_desc *desc);
125
126int crypto_init_shash_ops_async(struct crypto_tfm *tfm);
127
128static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
129{
130 return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
131}
132
133static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
134{
135 return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
136 halg);
137}
138
139static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
140 unsigned int reqsize)
141{
142 tfm->reqsize = reqsize;
143}
144
145static inline struct crypto_instance *ahash_crypto_instance(
146 struct ahash_instance *inst)
147{
148 return container_of(&inst->alg.halg.base, struct crypto_instance, alg);
149}
150
151static inline struct ahash_instance *ahash_instance(
152 struct crypto_instance *inst)
153{
154 return container_of(&inst->alg, struct ahash_instance, alg.halg.base);
155}
156
157static inline void *ahash_instance_ctx(struct ahash_instance *inst)
158{
159 return crypto_instance_ctx(ahash_crypto_instance(inst));
160}
161
162static inline unsigned int ahash_instance_headroom(void)
163{
164 return sizeof(struct ahash_alg) - sizeof(struct crypto_alg);
165}
166
167static inline struct ahash_instance *ahash_alloc_instance(
168 const char *name, struct crypto_alg *alg)
169{
170 return crypto_alloc_instance2(name, alg, ahash_instance_headroom());
171}
172
173static inline struct crypto_ahash *crypto_spawn_ahash(
174 struct crypto_ahash_spawn *spawn)
175{
176 return crypto_spawn_tfm2(&spawn->base);
177}
178
179static inline int ahash_enqueue_request(struct crypto_queue *queue,
180 struct ahash_request *request)
181{
182 return crypto_enqueue_request(queue, &request->base);
183}
184
185static inline struct ahash_request *ahash_dequeue_request(
186 struct crypto_queue *queue)
187{
188 return ahash_request_cast(crypto_dequeue_request(queue));
189}
190
191static inline int ahash_tfm_in_queue(struct crypto_queue *queue,
192 struct crypto_ahash *tfm)
193{
194 return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm));
195}
196
197static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
198{
199 return crypto_tfm_ctx(&tfm->base);
200}
201
202static inline struct crypto_instance *shash_crypto_instance(
203 struct shash_instance *inst)
204{
205 return container_of(&inst->alg.base, struct crypto_instance, alg);
206}
207
208static inline struct shash_instance *shash_instance(
209 struct crypto_instance *inst)
210{
211 return container_of(__crypto_shash_alg(&inst->alg),
212 struct shash_instance, alg);
213}
214
215static inline void *shash_instance_ctx(struct shash_instance *inst)
216{
217 return crypto_instance_ctx(shash_crypto_instance(inst));
218}
219
220static inline struct shash_instance *shash_alloc_instance(
221 const char *name, struct crypto_alg *alg)
222{
223 return crypto_alloc_instance2(name, alg,
224 sizeof(struct shash_alg) - sizeof(*alg));
225}
226
227static inline struct crypto_shash *crypto_spawn_shash(
228 struct crypto_shash_spawn *spawn)
229{
230 return crypto_spawn_tfm2(&spawn->base);
231}
232
233static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
234{
235 return crypto_tfm_ctx_aligned(&tfm->base);
236}
237
238static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
239{
240 return container_of(tfm, struct crypto_shash, base);
241}
242
243#endif /* _CRYPTO_INTERNAL_HASH_H */
244