diff options
Diffstat (limited to 'include/crypto/internal/hash.h')
| -rw-r--r-- | include/crypto/internal/hash.h | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h new file mode 100644 index 000000000..25806141d --- /dev/null +++ b/include/crypto/internal/hash.h @@ -0,0 +1,245 @@ +/* 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); + +bool crypto_shash_alg_has_setkey(struct shash_alg *alg); + +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 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 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_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 */ + |