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);
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 struct crypto_ahash *crypto_spawn_ahash(
170 struct crypto_ahash_spawn *spawn)
171{
172 return crypto_spawn_tfm2(&spawn->base);
173}
174
175static inline int ahash_enqueue_request(struct crypto_queue *queue,
176 struct ahash_request *request)
177{
178 return crypto_enqueue_request(queue, &request->base);
179}
180
181static inline struct ahash_request *ahash_dequeue_request(
182 struct crypto_queue *queue)
183{
184 return ahash_request_cast(crypto_dequeue_request(queue));
185}
186
187static inline int ahash_tfm_in_queue(struct crypto_queue *queue,
188 struct crypto_ahash *tfm)
189{
190 return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm));
191}
192
193static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
194{
195 return crypto_tfm_ctx(&tfm->base);
196}
197
198static inline struct crypto_instance *shash_crypto_instance(
199 struct shash_instance *inst)
200{
201 return container_of(&inst->alg.base, struct crypto_instance, alg);
202}
203
204static inline struct shash_instance *shash_instance(
205 struct crypto_instance *inst)
206{
207 return container_of(__crypto_shash_alg(&inst->alg),
208 struct shash_instance, alg);
209}
210
211static inline void *shash_instance_ctx(struct shash_instance *inst)
212{
213 return crypto_instance_ctx(shash_crypto_instance(inst));
214}
215
216static inline struct shash_instance *shash_alloc_instance(
217 const char *name, struct crypto_alg *alg)
218{
219 return crypto_alloc_instance2(name, alg,
220 sizeof(struct shash_alg) - sizeof(*alg));
221}
222
223static inline struct crypto_shash *crypto_spawn_shash(
224 struct crypto_shash_spawn *spawn)
225{
226 return crypto_spawn_tfm2(&spawn->base);
227}
228
229static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
230{
231 return crypto_tfm_ctx_aligned(&tfm->base);
232}
233
234static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
235{
236 return container_of(tfm, struct crypto_shash, base);
237}
238
239#endif /* _CRYPTO_INTERNAL_HASH_H */
240