Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
90bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg);
91
92int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
93 struct crypto_instance *inst,
94 const char *name, u32 type, u32 mask);
95
96static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
97{
98 crypto_drop_spawn(&spawn->base);
99}
100
101static inline struct hash_alg_common *crypto_spawn_ahash_alg(
102 struct crypto_ahash_spawn *spawn)
103{
104 return __crypto_hash_alg_common(spawn->base.alg);
105}
106
107int crypto_register_shash(struct shash_alg *alg);
108void crypto_unregister_shash(struct shash_alg *alg);
109int crypto_register_shashes(struct shash_alg *algs, int count);
110void crypto_unregister_shashes(struct shash_alg *algs, int count);
111int shash_register_instance(struct crypto_template *tmpl,
112 struct shash_instance *inst);
113void shash_free_singlespawn_instance(struct shash_instance *inst);
114
115int crypto_grab_shash(struct crypto_shash_spawn *spawn,
116 struct crypto_instance *inst,
117 const char *name, u32 type, u32 mask);
118
119static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
120{
121 crypto_drop_spawn(&spawn->base);
122}
123
124static inline struct shash_alg *crypto_spawn_shash_alg(
125 struct crypto_shash_spawn *spawn)
126{
127 return __crypto_shash_alg(spawn->base.alg);
128}
129
130int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
131int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
132int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
133
134static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
135{
136 return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
137}
138
139static inline void *crypto_ahash_ctx_dma(struct crypto_ahash *tfm)
140{
141 return crypto_tfm_ctx_dma(crypto_ahash_tfm(tfm));
142}
143
144static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
145{
146 return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
147 halg);
148}
149
150static inline struct ahash_alg *crypto_ahash_alg(struct crypto_ahash *hash)
151{
152 return container_of(crypto_hash_alg_common(hash), struct ahash_alg,
153 halg);
154}
155
156static inline void crypto_ahash_set_statesize(struct crypto_ahash *tfm,
157 unsigned int size)
158{
159 tfm->statesize = size;
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 void crypto_ahash_set_reqsize_dma(struct crypto_ahash *ahash,
169 unsigned int reqsize)
170{
171 reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);
172 ahash->reqsize = reqsize;
173}
174
175static inline struct crypto_instance *ahash_crypto_instance(
176 struct ahash_instance *inst)
177{
178 return &inst->s.base;
179}
180
181static inline struct ahash_instance *ahash_instance(
182 struct crypto_instance *inst)
183{
184 return container_of(inst, struct ahash_instance, s.base);
185}
186
187static inline struct ahash_instance *ahash_alg_instance(
188 struct crypto_ahash *ahash)
189{
190 return ahash_instance(crypto_tfm_alg_instance(&ahash->base));
191}
192
193static inline void *ahash_instance_ctx(struct ahash_instance *inst)
194{
195 return crypto_instance_ctx(ahash_crypto_instance(inst));
196}
197
198static inline void *ahash_request_ctx_dma(struct ahash_request *req)
199{
200 unsigned int align = crypto_dma_align();
201
202 if (align <= crypto_tfm_ctx_alignment())
203 align = 1;
204
205 return PTR_ALIGN(ahash_request_ctx(req), align);
206}
207
208static inline void ahash_request_complete(struct ahash_request *req, int err)
209{
210 crypto_request_complete(&req->base, err);
211}
212
213static inline u32 ahash_request_flags(struct ahash_request *req)
214{
215 return req->base.flags;
216}
217
218static inline struct crypto_ahash *crypto_spawn_ahash(
219 struct crypto_ahash_spawn *spawn)
220{
221 return crypto_spawn_tfm2(&spawn->base);
222}
223
224static inline int ahash_enqueue_request(struct crypto_queue *queue,
225 struct ahash_request *request)
226{
227 return crypto_enqueue_request(queue, &request->base);
228}
229
230static inline struct ahash_request *ahash_dequeue_request(
231 struct crypto_queue *queue)
232{
233 return ahash_request_cast(crypto_dequeue_request(queue));
234}
235
236static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
237{
238 return crypto_tfm_ctx(&tfm->base);
239}
240
241static inline struct crypto_instance *shash_crypto_instance(
242 struct shash_instance *inst)
243{
244 return &inst->s.base;
245}
246
247static inline struct shash_instance *shash_instance(
248 struct crypto_instance *inst)
249{
250 return container_of(inst, struct shash_instance, s.base);
251}
252
253static inline struct shash_instance *shash_alg_instance(
254 struct crypto_shash *shash)
255{
256 return shash_instance(crypto_tfm_alg_instance(&shash->base));
257}
258
259static inline void *shash_instance_ctx(struct shash_instance *inst)
260{
261 return crypto_instance_ctx(shash_crypto_instance(inst));
262}
263
264static inline struct crypto_shash *crypto_spawn_shash(
265 struct crypto_shash_spawn *spawn)
266{
267 return crypto_spawn_tfm2(&spawn->base);
268}
269
270static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
271{
272 return container_of(tfm, struct crypto_shash, base);
273}
274
275#endif /* _CRYPTO_INTERNAL_HASH_H */
276