summaryrefslogtreecommitdiff
path: root/include/crypto/internal/hash.h
blob: 1a2a41b79253cdc62e8c40a05af749c40d86030b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Hash algorithms.
 * 
 * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
 */

#ifndef _CRYPTO_INTERNAL_HASH_H
#define _CRYPTO_INTERNAL_HASH_H

#include <crypto/algapi.h>
#include <crypto/hash.h>

struct ahash_request;
struct scatterlist;

struct crypto_hash_walk {
	char *data;

	unsigned int offset;
	unsigned int alignmask;

	struct page *pg;
	unsigned int entrylen;

	unsigned int total;
	struct scatterlist *sg;

	unsigned int flags;
};

struct ahash_instance {
	void (*free)(struct ahash_instance *inst);
	union {
		struct {
			char head[offsetof(struct ahash_alg, halg.base)];
			struct crypto_instance base;
		} s;
		struct ahash_alg alg;
	};
};

struct shash_instance {
	void (*free)(struct shash_instance *inst);
	union {
		struct {
			char head[offsetof(struct shash_alg, base)];
			struct crypto_instance base;
		} s;
		struct shash_alg alg;
	};
};

struct crypto_ahash_spawn {
	struct crypto_spawn base;
};

struct crypto_shash_spawn {
	struct crypto_spawn base;
};

int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
int crypto_hash_walk_first(struct ahash_request *req,
			   struct crypto_hash_walk *walk);

static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
{
	return !(walk->entrylen | walk->total);
}

int crypto_register_ahash(struct ahash_alg *alg);
void crypto_unregister_ahash(struct ahash_alg *alg);
int crypto_register_ahashes(struct ahash_alg *algs, int count);
void crypto_unregister_ahashes(struct ahash_alg *algs, int count);
int ahash_register_instance(struct crypto_template *tmpl,
			    struct ahash_instance *inst);

int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
		    unsigned int keylen);

static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg)
{
	return alg->setkey != shash_no_setkey;
}

static inline bool crypto_shash_alg_needs_key(struct shash_alg *alg)
{
	return crypto_shash_alg_has_setkey(alg) &&
		!(alg->base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY);
}

bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg);

int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
		      struct crypto_instance *inst,
		      const char *name, u32 type, u32 mask);

static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
{
	crypto_drop_spawn(&spawn->base);
}

static inline struct hash_alg_common *crypto_spawn_ahash_alg(
	struct crypto_ahash_spawn *spawn)
{
	return __crypto_hash_alg_common(spawn->base.alg);
}

int crypto_register_shash(struct shash_alg *alg);
void crypto_unregister_shash(struct shash_alg *alg);
int crypto_register_shashes(struct shash_alg *algs, int count);
void crypto_unregister_shashes(struct shash_alg *algs, int count);
int shash_register_instance(struct crypto_template *tmpl,
			    struct shash_instance *inst);
void shash_free_singlespawn_instance(struct shash_instance *inst);

int crypto_grab_shash(struct crypto_shash_spawn *spawn,
		      struct crypto_instance *inst,
		      const char *name, u32 type, u32 mask);

static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
{
	crypto_drop_spawn(&spawn->base);
}

static inline struct shash_alg *crypto_spawn_shash_alg(
	struct crypto_shash_spawn *spawn)
{
	return __crypto_shash_alg(spawn->base.alg);
}

int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);

int crypto_init_shash_ops_async(struct crypto_tfm *tfm);

static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
{
	return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
}

static inline void *crypto_ahash_ctx_dma(struct crypto_ahash *tfm)
{
	return crypto_tfm_ctx_dma(crypto_ahash_tfm(tfm));
}

static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
{
	return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
			    halg);
}

static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
					    unsigned int reqsize)
{
	tfm->reqsize = reqsize;
}

static inline void crypto_ahash_set_reqsize_dma(struct crypto_ahash *ahash,
						unsigned int reqsize)
{
	reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);
	ahash->reqsize = reqsize;
}

static inline struct crypto_instance *ahash_crypto_instance(
	struct ahash_instance *inst)
{
	return &inst->s.base;
}

static inline struct ahash_instance *ahash_instance(
	struct crypto_instance *inst)
{
	return container_of(inst, struct ahash_instance, s.base);
}

static inline struct ahash_instance *ahash_alg_instance(
	struct crypto_ahash *ahash)
{
	return ahash_instance(crypto_tfm_alg_instance(&ahash->base));
}

static inline void *ahash_instance_ctx(struct ahash_instance *inst)
{
	return crypto_instance_ctx(ahash_crypto_instance(inst));
}

static inline void *ahash_request_ctx_dma(struct ahash_request *req)
{
	unsigned int align = crypto_dma_align();

	if (align <= crypto_tfm_ctx_alignment())
		align = 1;

	return PTR_ALIGN(ahash_request_ctx(req), align);
}

static inline void ahash_request_complete(struct ahash_request *req, int err)
{
	req->base.complete(&req->base, err);
}

static inline u32 ahash_request_flags(struct ahash_request *req)
{
	return req->base.flags;
}

static inline struct crypto_ahash *crypto_spawn_ahash(
	struct crypto_ahash_spawn *spawn)
{
	return crypto_spawn_tfm2(&spawn->base);
}

static inline int ahash_enqueue_request(struct crypto_queue *queue,
					     struct ahash_request *request)
{
	return crypto_enqueue_request(queue, &request->base);
}

static inline struct ahash_request *ahash_dequeue_request(
	struct crypto_queue *queue)
{
	return ahash_request_cast(crypto_dequeue_request(queue));
}

static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
{
	return crypto_tfm_ctx(&tfm->base);
}

static inline struct crypto_instance *shash_crypto_instance(
	struct shash_instance *inst)
{
	return &inst->s.base;
}

static inline struct shash_instance *shash_instance(
	struct crypto_instance *inst)
{
	return container_of(inst, struct shash_instance, s.base);
}

static inline struct shash_instance *shash_alg_instance(
	struct crypto_shash *shash)
{
	return shash_instance(crypto_tfm_alg_instance(&shash->base));
}

static inline void *shash_instance_ctx(struct shash_instance *inst)
{
	return crypto_instance_ctx(shash_crypto_instance(inst));
}

static inline struct crypto_shash *crypto_spawn_shash(
	struct crypto_shash_spawn *spawn)
{
	return crypto_spawn_tfm2(&spawn->base);
}

static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
{
	return crypto_tfm_ctx_aligned(&tfm->base);
}

static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
{
	return container_of(tfm, struct crypto_shash, base);
}

#endif	/* _CRYPTO_INTERNAL_HASH_H */