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