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Linux kernel mirror (for testing)
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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 alignmask;
22
23 struct page *pg;
24 unsigned int entrylen;
25
26 unsigned int total;
27 struct scatterlist *sg;
28
29 unsigned int flags;
30};
31
32struct ahash_instance {
33 void (*free)(struct ahash_instance *inst);
34 union {
35 struct {
36 char head[offsetof(struct ahash_alg, halg.base)];
37 struct crypto_instance base;
38 } s;
39 struct ahash_alg alg;
40 };
41};
42
43struct shash_instance {
44 void (*free)(struct shash_instance *inst);
45 union {
46 struct {
47 char head[offsetof(struct shash_alg, base)];
48 struct crypto_instance base;
49 } s;
50 struct shash_alg alg;
51 };
52};
53
54struct crypto_ahash_spawn {
55 struct crypto_spawn base;
56};
57
58struct crypto_shash_spawn {
59 struct crypto_spawn base;
60};
61
62int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
63int crypto_hash_walk_first(struct ahash_request *req,
64 struct crypto_hash_walk *walk);
65int crypto_ahash_walk_first(struct ahash_request *req,
66 struct crypto_hash_walk *walk);
67
68static inline int crypto_ahash_walk_done(struct crypto_hash_walk *walk,
69 int err)
70{
71 return crypto_hash_walk_done(walk, err);
72}
73
74static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
75{
76 return !(walk->entrylen | walk->total);
77}
78
79static inline int crypto_ahash_walk_last(struct crypto_hash_walk *walk)
80{
81 return crypto_hash_walk_last(walk);
82}
83
84int crypto_register_ahash(struct ahash_alg *alg);
85void crypto_unregister_ahash(struct ahash_alg *alg);
86int crypto_register_ahashes(struct ahash_alg *algs, int count);
87void crypto_unregister_ahashes(struct ahash_alg *algs, int count);
88int ahash_register_instance(struct crypto_template *tmpl,
89 struct ahash_instance *inst);
90
91int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
92 unsigned int keylen);
93
94static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg)
95{
96 return alg->setkey != shash_no_setkey;
97}
98
99static inline bool crypto_shash_alg_needs_key(struct shash_alg *alg)
100{
101 return crypto_shash_alg_has_setkey(alg) &&
102 !(alg->base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY);
103}
104
105bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg);
106
107int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
108 struct crypto_instance *inst,
109 const char *name, u32 type, u32 mask);
110
111static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
112{
113 crypto_drop_spawn(&spawn->base);
114}
115
116static inline struct hash_alg_common *crypto_spawn_ahash_alg(
117 struct crypto_ahash_spawn *spawn)
118{
119 return __crypto_hash_alg_common(spawn->base.alg);
120}
121
122int crypto_register_shash(struct shash_alg *alg);
123void crypto_unregister_shash(struct shash_alg *alg);
124int crypto_register_shashes(struct shash_alg *algs, int count);
125void crypto_unregister_shashes(struct shash_alg *algs, int count);
126int shash_register_instance(struct crypto_template *tmpl,
127 struct shash_instance *inst);
128void shash_free_singlespawn_instance(struct shash_instance *inst);
129
130int crypto_grab_shash(struct crypto_shash_spawn *spawn,
131 struct crypto_instance *inst,
132 const char *name, u32 type, u32 mask);
133
134static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
135{
136 crypto_drop_spawn(&spawn->base);
137}
138
139static inline struct shash_alg *crypto_spawn_shash_alg(
140 struct crypto_shash_spawn *spawn)
141{
142 return __crypto_shash_alg(spawn->base.alg);
143}
144
145int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
146int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
147int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
148
149int crypto_init_shash_ops_async(struct crypto_tfm *tfm);
150
151static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
152{
153 return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
154}
155
156static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
157{
158 return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
159 halg);
160}
161
162static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
163 unsigned int reqsize)
164{
165 tfm->reqsize = reqsize;
166}
167
168static inline struct crypto_instance *ahash_crypto_instance(
169 struct ahash_instance *inst)
170{
171 return &inst->s.base;
172}
173
174static inline struct ahash_instance *ahash_instance(
175 struct crypto_instance *inst)
176{
177 return container_of(inst, struct ahash_instance, s.base);
178}
179
180static inline void *ahash_instance_ctx(struct ahash_instance *inst)
181{
182 return crypto_instance_ctx(ahash_crypto_instance(inst));
183}
184
185static inline void ahash_request_complete(struct ahash_request *req, int err)
186{
187 req->base.complete(&req->base, err);
188}
189
190static inline u32 ahash_request_flags(struct ahash_request *req)
191{
192 return req->base.flags;
193}
194
195static inline struct crypto_ahash *crypto_spawn_ahash(
196 struct crypto_ahash_spawn *spawn)
197{
198 return crypto_spawn_tfm2(&spawn->base);
199}
200
201static inline int ahash_enqueue_request(struct crypto_queue *queue,
202 struct ahash_request *request)
203{
204 return crypto_enqueue_request(queue, &request->base);
205}
206
207static inline struct ahash_request *ahash_dequeue_request(
208 struct crypto_queue *queue)
209{
210 return ahash_request_cast(crypto_dequeue_request(queue));
211}
212
213static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
214{
215 return crypto_tfm_ctx(&tfm->base);
216}
217
218static inline struct crypto_instance *shash_crypto_instance(
219 struct shash_instance *inst)
220{
221 return &inst->s.base;
222}
223
224static inline struct shash_instance *shash_instance(
225 struct crypto_instance *inst)
226{
227 return container_of(inst, struct shash_instance, s.base);
228}
229
230static inline struct shash_instance *shash_alg_instance(
231 struct crypto_shash *shash)
232{
233 return shash_instance(crypto_tfm_alg_instance(&shash->base));
234}
235
236static inline void *shash_instance_ctx(struct shash_instance *inst)
237{
238 return crypto_instance_ctx(shash_crypto_instance(inst));
239}
240
241static inline struct crypto_shash *crypto_spawn_shash(
242 struct crypto_shash_spawn *spawn)
243{
244 return crypto_spawn_tfm2(&spawn->base);
245}
246
247static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
248{
249 return crypto_tfm_ctx_aligned(&tfm->base);
250}
251
252static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
253{
254 return container_of(tfm, struct crypto_shash, base);
255}
256
257#endif /* _CRYPTO_INTERNAL_HASH_H */
258