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/*
* 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 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 */
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