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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Hash algorithms.
4 *
5 * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
6 */
7
8#ifndef _CRYPTO_INTERNAL_HASH_H
9#define _CRYPTO_INTERNAL_HASH_H
10
11#include <crypto/algapi.h>
12#include <crypto/hash.h>
13
14struct ahash_request;
15struct scatterlist;
16
17struct crypto_hash_walk {
18 char *data;
19
20 unsigned int offset;
21 unsigned int flags;
22
23 struct page *pg;
24 unsigned int entrylen;
25
26 unsigned int total;
27 struct scatterlist *sg;
28};
29
30struct ahash_instance {
31 void (*free)(struct ahash_instance *inst);
32 union {
33 struct {
34 char head[offsetof(struct ahash_alg, halg.base)];
35 struct crypto_instance base;
36 } s;
37 struct ahash_alg alg;
38 };
39};
40
41struct shash_instance {
42 void (*free)(struct shash_instance *inst);
43 union {
44 struct {
45 char head[offsetof(struct shash_alg, base)];
46 struct crypto_instance base;
47 } s;
48 struct shash_alg alg;
49 };
50};
51
52struct crypto_ahash_spawn {
53 struct crypto_spawn base;
54};
55
56struct crypto_shash_spawn {
57 struct crypto_spawn base;
58};
59
60int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
61int crypto_hash_walk_first(struct ahash_request *req,
62 struct crypto_hash_walk *walk);
63
64static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
65{
66 return !(walk->entrylen | walk->total);
67}
68
69int crypto_register_ahash(struct ahash_alg *alg);
70void crypto_unregister_ahash(struct ahash_alg *alg);
71int crypto_register_ahashes(struct ahash_alg *algs, int count);
72void crypto_unregister_ahashes(struct ahash_alg *algs, int count);
73int ahash_register_instance(struct crypto_template *tmpl,
74 struct ahash_instance *inst);
75
76int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
77 unsigned int keylen);
78
79static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg)
80{
81 return alg->setkey != shash_no_setkey;
82}
83
84static inline bool crypto_shash_alg_needs_key(struct shash_alg *alg)
85{
86 return crypto_shash_alg_has_setkey(alg) &&
87 !(alg->base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY);
88}
89
90int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
91 struct crypto_instance *inst,
92 const char *name, u32 type, u32 mask);
93
94static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
95{
96 crypto_drop_spawn(&spawn->base);
97}
98
99static inline struct hash_alg_common *crypto_spawn_ahash_alg(
100 struct crypto_ahash_spawn *spawn)
101{
102 return __crypto_hash_alg_common(spawn->base.alg);
103}
104
105int crypto_register_shash(struct shash_alg *alg);
106void crypto_unregister_shash(struct shash_alg *alg);
107int crypto_register_shashes(struct shash_alg *algs, int count);
108void crypto_unregister_shashes(struct shash_alg *algs, int count);
109int shash_register_instance(struct crypto_template *tmpl,
110 struct shash_instance *inst);
111void shash_free_singlespawn_instance(struct shash_instance *inst);
112
113int crypto_grab_shash(struct crypto_shash_spawn *spawn,
114 struct crypto_instance *inst,
115 const char *name, u32 type, u32 mask);
116
117static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
118{
119 crypto_drop_spawn(&spawn->base);
120}
121
122static inline struct shash_alg *crypto_spawn_shash_alg(
123 struct crypto_shash_spawn *spawn)
124{
125 return __crypto_shash_alg(spawn->base.alg);
126}
127
128int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
129int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
130int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
131
132static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
133{
134 return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
135}
136
137static inline void *crypto_ahash_ctx_dma(struct crypto_ahash *tfm)
138{
139 return crypto_tfm_ctx_dma(crypto_ahash_tfm(tfm));
140}
141
142static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
143{
144 return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
145 halg);
146}
147
148static inline struct ahash_alg *crypto_ahash_alg(struct crypto_ahash *hash)
149{
150 return container_of(crypto_hash_alg_common(hash), struct ahash_alg,
151 halg);
152}
153
154static inline void crypto_ahash_set_statesize(struct crypto_ahash *tfm,
155 unsigned int size)
156{
157 tfm->statesize = size;
158}
159
160static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
161 unsigned int reqsize)
162{
163 tfm->reqsize = reqsize;
164}
165
166static inline void crypto_ahash_set_reqsize_dma(struct crypto_ahash *ahash,
167 unsigned int reqsize)
168{
169 reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);
170 ahash->reqsize = reqsize;
171}
172
173static inline struct crypto_instance *ahash_crypto_instance(
174 struct ahash_instance *inst)
175{
176 return &inst->s.base;
177}
178
179static inline struct ahash_instance *ahash_instance(
180 struct crypto_instance *inst)
181{
182 return container_of(inst, struct ahash_instance, s.base);
183}
184
185static inline struct ahash_instance *ahash_alg_instance(
186 struct crypto_ahash *ahash)
187{
188 return ahash_instance(crypto_tfm_alg_instance(&ahash->base));
189}
190
191static inline void *ahash_instance_ctx(struct ahash_instance *inst)
192{
193 return crypto_instance_ctx(ahash_crypto_instance(inst));
194}
195
196static inline void *ahash_request_ctx_dma(struct ahash_request *req)
197{
198 unsigned int align = crypto_dma_align();
199
200 if (align <= crypto_tfm_ctx_alignment())
201 align = 1;
202
203 return PTR_ALIGN(ahash_request_ctx(req), align);
204}
205
206static inline void ahash_request_complete(struct ahash_request *req, int err)
207{
208 crypto_request_complete(&req->base, err);
209}
210
211static inline u32 ahash_request_flags(struct ahash_request *req)
212{
213 return req->base.flags;
214}
215
216static inline struct crypto_ahash *crypto_spawn_ahash(
217 struct crypto_ahash_spawn *spawn)
218{
219 return crypto_spawn_tfm2(&spawn->base);
220}
221
222static inline int ahash_enqueue_request(struct crypto_queue *queue,
223 struct ahash_request *request)
224{
225 return crypto_enqueue_request(queue, &request->base);
226}
227
228static inline struct ahash_request *ahash_dequeue_request(
229 struct crypto_queue *queue)
230{
231 return ahash_request_cast(crypto_dequeue_request(queue));
232}
233
234static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
235{
236 return crypto_tfm_ctx(&tfm->base);
237}
238
239static inline struct crypto_instance *shash_crypto_instance(
240 struct shash_instance *inst)
241{
242 return &inst->s.base;
243}
244
245static inline struct shash_instance *shash_instance(
246 struct crypto_instance *inst)
247{
248 return container_of(inst, struct shash_instance, s.base);
249}
250
251static inline struct shash_instance *shash_alg_instance(
252 struct crypto_shash *shash)
253{
254 return shash_instance(crypto_tfm_alg_instance(&shash->base));
255}
256
257static inline void *shash_instance_ctx(struct shash_instance *inst)
258{
259 return crypto_instance_ctx(shash_crypto_instance(inst));
260}
261
262static inline struct crypto_shash *crypto_spawn_shash(
263 struct crypto_shash_spawn *spawn)
264{
265 return crypto_spawn_tfm2(&spawn->base);
266}
267
268static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
269{
270 return container_of(tfm, struct crypto_shash, base);
271}
272
273#endif /* _CRYPTO_INTERNAL_HASH_H */
274
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 crypto_register_ahashes(struct ahash_alg *algs, int count);
80void crypto_unregister_ahashes(struct ahash_alg *algs, int count);
81int ahash_register_instance(struct crypto_template *tmpl,
82 struct ahash_instance *inst);
83void ahash_free_instance(struct crypto_instance *inst);
84
85int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
86 unsigned int keylen);
87
88static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg)
89{
90 return alg->setkey != shash_no_setkey;
91}
92
93bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg);
94
95int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
96 struct hash_alg_common *alg,
97 struct crypto_instance *inst);
98
99static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
100{
101 crypto_drop_spawn(&spawn->base);
102}
103
104struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
105
106int crypto_register_shash(struct shash_alg *alg);
107int crypto_unregister_shash(struct shash_alg *alg);
108int crypto_register_shashes(struct shash_alg *algs, int count);
109int crypto_unregister_shashes(struct shash_alg *algs, int count);
110int shash_register_instance(struct crypto_template *tmpl,
111 struct shash_instance *inst);
112void shash_free_instance(struct crypto_instance *inst);
113
114int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
115 struct shash_alg *alg,
116 struct crypto_instance *inst);
117
118static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
119{
120 crypto_drop_spawn(&spawn->base);
121}
122
123struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
124
125int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
126int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
127int shash_ahash_digest(struct ahash_request *req, 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