| /* |
| * Hash algorithms. |
| * |
| * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| */ |
| |
| #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 { |
| struct ahash_alg alg; |
| }; |
| |
| struct shash_instance { |
| struct shash_alg alg; |
| }; |
| |
| struct crypto_ahash_spawn { |
| struct crypto_spawn base; |
| }; |
| |
| struct crypto_shash_spawn { |
| struct crypto_spawn base; |
| }; |
| |
| extern const struct crypto_type crypto_ahash_type; |
| |
| 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); |
| int crypto_hash_walk_first_compat(struct hash_desc *hdesc, |
| struct crypto_hash_walk *walk, |
| struct scatterlist *sg, unsigned int len); |
| |
| 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); |
| int crypto_unregister_ahash(struct ahash_alg *alg); |
| int ahash_register_instance(struct crypto_template *tmpl, |
| struct ahash_instance *inst); |
| void ahash_free_instance(struct crypto_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; |
| } |
| |
| int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn, |
| struct hash_alg_common *alg, |
| struct crypto_instance *inst); |
| |
| static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn) |
| { |
| crypto_drop_spawn(&spawn->base); |
| } |
| |
| struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask); |
| |
| int crypto_register_shash(struct shash_alg *alg); |
| int crypto_unregister_shash(struct shash_alg *alg); |
| int crypto_register_shashes(struct shash_alg *algs, int count); |
| int crypto_unregister_shashes(struct shash_alg *algs, int count); |
| int shash_register_instance(struct crypto_template *tmpl, |
| struct shash_instance *inst); |
| void shash_free_instance(struct crypto_instance *inst); |
| |
| int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn, |
| struct shash_alg *alg, |
| struct crypto_instance *inst); |
| |
| static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn) |
| { |
| crypto_drop_spawn(&spawn->base); |
| } |
| |
| struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask); |
| |
| 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 container_of(&inst->alg.halg.base, struct crypto_instance, alg); |
| } |
| |
| static inline struct ahash_instance *ahash_instance( |
| struct crypto_instance *inst) |
| { |
| return container_of(&inst->alg, struct ahash_instance, alg.halg.base); |
| } |
| |
| static inline void *ahash_instance_ctx(struct ahash_instance *inst) |
| { |
| return crypto_instance_ctx(ahash_crypto_instance(inst)); |
| } |
| |
| static inline unsigned int ahash_instance_headroom(void) |
| { |
| return sizeof(struct ahash_alg) - sizeof(struct crypto_alg); |
| } |
| |
| static inline struct ahash_instance *ahash_alloc_instance( |
| const char *name, struct crypto_alg *alg) |
| { |
| return crypto_alloc_instance2(name, alg, ahash_instance_headroom()); |
| } |
| |
| 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 int ahash_tfm_in_queue(struct crypto_queue *queue, |
| struct crypto_ahash *tfm) |
| { |
| return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm)); |
| } |
| |
| 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 container_of(&inst->alg.base, struct crypto_instance, alg); |
| } |
| |
| static inline struct shash_instance *shash_instance( |
| struct crypto_instance *inst) |
| { |
| return container_of(__crypto_shash_alg(&inst->alg), |
| struct shash_instance, alg); |
| } |
| |
| static inline void *shash_instance_ctx(struct shash_instance *inst) |
| { |
| return crypto_instance_ctx(shash_crypto_instance(inst)); |
| } |
| |
| static inline struct shash_instance *shash_alloc_instance( |
| const char *name, struct crypto_alg *alg) |
| { |
| return crypto_alloc_instance2(name, alg, |
| sizeof(struct shash_alg) - sizeof(*alg)); |
| } |
| |
| 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 */ |
| |