/* * 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 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 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 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 */