[linux-2.6-block.git] / include / crypto / internal / hash.h

/*
 * 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 shash_instance {
	struct shash_alg alg;
};

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);

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);

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_digest(struct ahash_request *req, struct shash_desc *desc);

static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
{
	return crypto_tfm_ctx(&tfm->base);
}

static inline struct ahash_alg *crypto_ahash_alg(
	struct crypto_ahash *tfm)
{
	return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash;
}

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 */
Commit	Line	Data
20036252 HX	1	/*
	2	* Hash algorithms.
	3	*
	4	* Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the Free
	8	* Software Foundation; either version 2 of the License, or (at your option)
	9	* any later version.
	10	*
	11	*/
	12
	13	#ifndef _CRYPTO_INTERNAL_HASH_H
	14	#define _CRYPTO_INTERNAL_HASH_H
	15
	16	#include <crypto/algapi.h>
18e33e6d	17	#include <crypto/hash.h>
20036252 HX	18
	19	struct ahash_request;
	20	struct scatterlist;
	21
	22	struct crypto_hash_walk {
	23	char *data;
	24
	25	unsigned int offset;
	26	unsigned int alignmask;
	27
	28	struct page *pg;
	29	unsigned int entrylen;
	30
	31	unsigned int total;
	32	struct scatterlist *sg;
	33
	34	unsigned int flags;
	35	};
	36
2e4fddd8 HX	37	struct shash_instance {
	38	struct shash_alg alg;
	39	};
	40
94296999 HX	41	struct crypto_shash_spawn {
	42	struct crypto_spawn base;
	43	};
	44
18e33e6d HX	45	extern const struct crypto_type crypto_ahash_type;
18e33e6d HX	46
20036252 HX	47	int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
	48	int crypto_hash_walk_first(struct ahash_request *req,
	49	struct crypto_hash_walk *walk);
5f7082ed HX	50	int crypto_hash_walk_first_compat(struct hash_desc *hdesc,
	51	struct crypto_hash_walk *walk,
	52	struct scatterlist *sg, unsigned int len);
20036252	53
7b5a080b HX	54	int crypto_register_shash(struct shash_alg *alg);
7b5a080b HX	55	int crypto_unregister_shash(struct shash_alg *alg);
619a6ebd HX	56	int shash_register_instance(struct crypto_template *tmpl,
619a6ebd HX	57	struct shash_instance *inst);
2e4fddd8 HX	58	void shash_free_instance(struct crypto_instance *inst);
2e4fddd8 HX	59
94296999 HX	60	int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
	61	struct shash_alg *alg,
	62	struct crypto_instance *inst);
	63
7d6f5640 HX	64	struct shash_alg shash_attr_alg(struct rtattr rta, u32 type, u32 mask);
7d6f5640 HX	65
7eddf95e HX	66	int shash_ahash_update(struct ahash_request req, struct shash_desc desc);
	67	int shash_ahash_digest(struct ahash_request req, struct shash_desc desc);
	68
18e33e6d HX	69	static inline void crypto_ahash_ctx(struct crypto_ahash tfm)
	70	{
	71	return crypto_tfm_ctx(&tfm->base);
	72	}
	73
	74	static inline struct ahash_alg *crypto_ahash_alg(
	75	struct crypto_ahash *tfm)
	76	{
	77	return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash;
	78	}
	79
	80	static inline int ahash_enqueue_request(struct crypto_queue *queue,
	81	struct ahash_request *request)
	82	{
	83	return crypto_enqueue_request(queue, &request->base);
	84	}
	85
	86	static inline struct ahash_request *ahash_dequeue_request(
	87	struct crypto_queue *queue)
	88	{
	89	return ahash_request_cast(crypto_dequeue_request(queue));
	90	}
	91
18e33e6d HX	92	static inline int ahash_tfm_in_queue(struct crypto_queue *queue,
	93	struct crypto_ahash *tfm)
	94	{
	95	return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm));
	96	}
	97
7b5a080b HX	98	static inline void crypto_shash_ctx(struct crypto_shash tfm)
	99	{
	100	return crypto_tfm_ctx(&tfm->base);
	101	}
	102
2e4fddd8 HX	103	static inline struct crypto_instance *shash_crypto_instance(
	104	struct shash_instance *inst)
	105	{
	106	return container_of(&inst->alg.base, struct crypto_instance, alg);
	107	}
	108
	109	static inline struct shash_instance *shash_instance(
	110	struct crypto_instance *inst)
	111	{
	112	return container_of(__crypto_shash_alg(&inst->alg),
	113	struct shash_instance, alg);
	114	}
	115
ef5d590c HX	116	static inline void shash_instance_ctx(struct shash_instance inst)
	117	{
	118	return crypto_instance_ctx(shash_crypto_instance(inst));
	119	}
	120
2e4fddd8 HX	121	static inline struct shash_instance *shash_alloc_instance(
	122	const char name, struct crypto_alg alg)
	123	{
	124	return crypto_alloc_instance2(name, alg,
	125	sizeof(struct shash_alg) - sizeof(*alg));
	126	}
	127
94296999 HX	128	static inline struct crypto_shash *crypto_spawn_shash(
	129	struct crypto_shash_spawn *spawn)
	130	{
	131	return crypto_spawn_tfm2(&spawn->base);
	132	}
	133
cde6263f HX	134	static inline void crypto_shash_ctx_aligned(struct crypto_shash tfm)
	135	{
	136	return crypto_tfm_ctx_aligned(&tfm->base);
	137	}
	138
0390e6ae HX	139	static inline struct crypto_shash __crypto_shash_cast(struct crypto_tfm tfm)
0390e6ae HX	140	{
113adefc	141	return container_of(tfm, struct crypto_shash, base);
0390e6ae HX	142	}
0390e6ae HX	143
20036252 HX	144	#endif /* _CRYPTO_INTERNAL_HASH_H */
20036252 HX	145