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