1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
8 #ifndef _CRYPTO_INTERNAL_HASH_H
9 #define _CRYPTO_INTERNAL_HASH_H
11 #include <crypto/algapi.h>
12 #include <crypto/hash.h>
17 struct crypto_hash_walk {
24 unsigned int entrylen;
27 struct scatterlist *sg;
30 struct ahash_instance {
31 void (*free)(struct ahash_instance *inst);
34 char head[offsetof(struct ahash_alg, halg.base)];
35 struct crypto_instance base;
41 struct shash_instance {
42 void (*free)(struct shash_instance *inst);
45 char head[offsetof(struct shash_alg, base)];
46 struct crypto_instance base;
52 struct crypto_ahash_spawn {
53 struct crypto_spawn base;
56 struct crypto_shash_spawn {
57 struct crypto_spawn base;
60 int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
61 int crypto_hash_walk_first(struct ahash_request *req,
62 struct crypto_hash_walk *walk);
64 static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
66 return !(walk->entrylen | walk->total);
69 int crypto_register_ahash(struct ahash_alg *alg);
70 void crypto_unregister_ahash(struct ahash_alg *alg);
71 int crypto_register_ahashes(struct ahash_alg *algs, int count);
72 void crypto_unregister_ahashes(struct ahash_alg *algs, int count);
73 int ahash_register_instance(struct crypto_template *tmpl,
74 struct ahash_instance *inst);
76 int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
79 static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg)
81 return alg->setkey != shash_no_setkey;
84 static inline bool crypto_shash_alg_needs_key(struct shash_alg *alg)
86 return crypto_shash_alg_has_setkey(alg) &&
87 !(alg->base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY);
90 bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg);
92 int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
93 struct crypto_instance *inst,
94 const char *name, u32 type, u32 mask);
96 static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
98 crypto_drop_spawn(&spawn->base);
101 static inline struct hash_alg_common *crypto_spawn_ahash_alg(
102 struct crypto_ahash_spawn *spawn)
104 return __crypto_hash_alg_common(spawn->base.alg);
107 int crypto_register_shash(struct shash_alg *alg);
108 void crypto_unregister_shash(struct shash_alg *alg);
109 int crypto_register_shashes(struct shash_alg *algs, int count);
110 void crypto_unregister_shashes(struct shash_alg *algs, int count);
111 int shash_register_instance(struct crypto_template *tmpl,
112 struct shash_instance *inst);
113 void shash_free_singlespawn_instance(struct shash_instance *inst);
115 int crypto_grab_shash(struct crypto_shash_spawn *spawn,
116 struct crypto_instance *inst,
117 const char *name, u32 type, u32 mask);
119 static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
121 crypto_drop_spawn(&spawn->base);
124 static inline struct shash_alg *crypto_spawn_shash_alg(
125 struct crypto_shash_spawn *spawn)
127 return __crypto_shash_alg(spawn->base.alg);
130 int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
131 int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
132 int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
134 static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
136 return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
139 static inline void *crypto_ahash_ctx_dma(struct crypto_ahash *tfm)
141 return crypto_tfm_ctx_dma(crypto_ahash_tfm(tfm));
144 static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
146 return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
150 static inline struct ahash_alg *crypto_ahash_alg(struct crypto_ahash *hash)
152 return container_of(crypto_hash_alg_common(hash), struct ahash_alg,
156 static inline void crypto_ahash_set_statesize(struct crypto_ahash *tfm,
159 tfm->statesize = size;
162 static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
163 unsigned int reqsize)
165 tfm->reqsize = reqsize;
168 static inline void crypto_ahash_set_reqsize_dma(struct crypto_ahash *ahash,
169 unsigned int reqsize)
171 reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);
172 ahash->reqsize = reqsize;
175 static inline struct crypto_instance *ahash_crypto_instance(
176 struct ahash_instance *inst)
178 return &inst->s.base;
181 static inline struct ahash_instance *ahash_instance(
182 struct crypto_instance *inst)
184 return container_of(inst, struct ahash_instance, s.base);
187 static inline struct ahash_instance *ahash_alg_instance(
188 struct crypto_ahash *ahash)
190 return ahash_instance(crypto_tfm_alg_instance(&ahash->base));
193 static inline void *ahash_instance_ctx(struct ahash_instance *inst)
195 return crypto_instance_ctx(ahash_crypto_instance(inst));
198 static inline void *ahash_request_ctx_dma(struct ahash_request *req)
200 unsigned int align = crypto_dma_align();
202 if (align <= crypto_tfm_ctx_alignment())
205 return PTR_ALIGN(ahash_request_ctx(req), align);
208 static inline void ahash_request_complete(struct ahash_request *req, int err)
210 crypto_request_complete(&req->base, err);
213 static inline u32 ahash_request_flags(struct ahash_request *req)
215 return req->base.flags;
218 static inline struct crypto_ahash *crypto_spawn_ahash(
219 struct crypto_ahash_spawn *spawn)
221 return crypto_spawn_tfm2(&spawn->base);
224 static inline int ahash_enqueue_request(struct crypto_queue *queue,
225 struct ahash_request *request)
227 return crypto_enqueue_request(queue, &request->base);
230 static inline struct ahash_request *ahash_dequeue_request(
231 struct crypto_queue *queue)
233 return ahash_request_cast(crypto_dequeue_request(queue));
236 static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
238 return crypto_tfm_ctx(&tfm->base);
241 static inline struct crypto_instance *shash_crypto_instance(
242 struct shash_instance *inst)
244 return &inst->s.base;
247 static inline struct shash_instance *shash_instance(
248 struct crypto_instance *inst)
250 return container_of(inst, struct shash_instance, s.base);
253 static inline struct shash_instance *shash_alg_instance(
254 struct crypto_shash *shash)
256 return shash_instance(crypto_tfm_alg_instance(&shash->base));
259 static inline void *shash_instance_ctx(struct shash_instance *inst)
261 return crypto_instance_ctx(shash_crypto_instance(inst));
264 static inline struct crypto_shash *crypto_spawn_shash(
265 struct crypto_shash_spawn *spawn)
267 return crypto_spawn_tfm2(&spawn->base);
270 static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
272 return container_of(tfm, struct crypto_shash, base);
275 #endif /* _CRYPTO_INTERNAL_HASH_H */