[deliverable/linux.git] / include / crypto / internal / skcipher.h

/*
 * Symmetric key ciphers.
 * 
 * Copyright (c) 2007 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_SKCIPHER_H
#define _CRYPTO_INTERNAL_SKCIPHER_H

#include <crypto/algapi.h>
#include <crypto/skcipher.h>
#include <linux/types.h>

struct rtattr;

struct skcipher_instance {
	void (*free)(struct skcipher_instance *inst);
	union {
		struct {
			char head[offsetof(struct skcipher_alg, base)];
			struct crypto_instance base;
		} s;
		struct skcipher_alg alg;
	};
};

struct crypto_skcipher_spawn {
	struct crypto_spawn base;
};

extern const struct crypto_type crypto_givcipher_type;

static inline struct crypto_instance *skcipher_crypto_instance(
	struct skcipher_instance *inst)
{
	return &inst->s.base;
}

static inline struct skcipher_instance *skcipher_alg_instance(
	struct crypto_skcipher *skcipher)
{
	return container_of(crypto_skcipher_alg(skcipher),
			    struct skcipher_instance, alg);
}

static inline void *skcipher_instance_ctx(struct skcipher_instance *inst)
{
	return crypto_instance_ctx(skcipher_crypto_instance(inst));
}

static inline void skcipher_request_complete(struct skcipher_request *req, int err)
{
	req->base.complete(&req->base, err);
}

static inline void crypto_set_skcipher_spawn(
	struct crypto_skcipher_spawn *spawn, struct crypto_instance *inst)
{
	crypto_set_spawn(&spawn->base, inst);
}

int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,
			 u32 type, u32 mask);

static inline int crypto_grab_skcipher2(struct crypto_skcipher_spawn *spawn,
					const char *name, u32 type, u32 mask)
{
	return crypto_grab_skcipher(spawn, name, type, mask);
}

struct crypto_alg *crypto_lookup_skcipher(const char *name, u32 type, u32 mask);

static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
{
	crypto_drop_spawn(&spawn->base);
}

static inline struct skcipher_alg *crypto_skcipher_spawn_alg(
	struct crypto_skcipher_spawn *spawn)
{
	return container_of(spawn->base.alg, struct skcipher_alg, base);
}

static inline struct skcipher_alg *crypto_spawn_skcipher_alg(
	struct crypto_skcipher_spawn *spawn)
{
	return crypto_skcipher_spawn_alg(spawn);
}

static inline struct crypto_skcipher *crypto_spawn_skcipher(
	struct crypto_skcipher_spawn *spawn)
{
	return crypto_spawn_tfm2(&spawn->base);
}

static inline struct crypto_skcipher *crypto_spawn_skcipher2(
	struct crypto_skcipher_spawn *spawn)
{
	return crypto_spawn_skcipher(spawn);
}

static inline void crypto_skcipher_set_reqsize(
	struct crypto_skcipher *skcipher, unsigned int reqsize)
{
	skcipher->reqsize = reqsize;
}

int crypto_register_skcipher(struct skcipher_alg *alg);
void crypto_unregister_skcipher(struct skcipher_alg *alg);
int crypto_register_skciphers(struct skcipher_alg *algs, int count);
void crypto_unregister_skciphers(struct skcipher_alg *algs, int count);
int skcipher_register_instance(struct crypto_template *tmpl,
			       struct skcipher_instance *inst);

static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
					       int err)
{
	req->base.complete(&req->base, err);
}

static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
{
	return req->base.flags;
}

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

static inline void *skcipher_request_ctx(struct skcipher_request *req)
{
	return req->__ctx;
}

static inline u32 skcipher_request_flags(struct skcipher_request *req)
{
	return req->base.flags;
}

static inline unsigned int crypto_skcipher_alg_min_keysize(
	struct skcipher_alg *alg)
{
	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
	    CRYPTO_ALG_TYPE_BLKCIPHER)
		return alg->base.cra_blkcipher.min_keysize;

	if (alg->base.cra_ablkcipher.encrypt)
		return alg->base.cra_ablkcipher.min_keysize;

	return alg->min_keysize;
}

static inline unsigned int crypto_skcipher_alg_max_keysize(
	struct skcipher_alg *alg)
{
	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
	    CRYPTO_ALG_TYPE_BLKCIPHER)
		return alg->base.cra_blkcipher.max_keysize;

	if (alg->base.cra_ablkcipher.encrypt)
		return alg->base.cra_ablkcipher.max_keysize;

	return alg->max_keysize;
}

#endif	/* _CRYPTO_INTERNAL_SKCIPHER_H */
Commit	Line	Data
378f4f51 HX	1	/*
	2	* Symmetric key ciphers.
	3	*
	4	* Copyright (c) 2007 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_SKCIPHER_H
	14	#define _CRYPTO_INTERNAL_SKCIPHER_H
	15
	16	#include <crypto/algapi.h>
61da88e2	17	#include <crypto/skcipher.h>
ecfc4329 HX	18	#include <linux/types.h>
	19
	20	struct rtattr;
378f4f51	21
4e6c3df4 HX	22	struct skcipher_instance {
	23	void (free)(struct skcipher_instance inst);
	24	union {
	25	struct {
	26	char head[offsetof(struct skcipher_alg, base)];
	27	struct crypto_instance base;
	28	} s;
	29	struct skcipher_alg alg;
	30	};
	31	};
	32
378f4f51 HX	33	struct crypto_skcipher_spawn {
	34	struct crypto_spawn base;
	35	};
	36
61da88e2 HX	37	extern const struct crypto_type crypto_givcipher_type;
61da88e2 HX	38
4e6c3df4 HX	39	static inline struct crypto_instance *skcipher_crypto_instance(
	40	struct skcipher_instance *inst)
	41	{
	42	return &inst->s.base;
	43	}
	44
	45	static inline struct skcipher_instance *skcipher_alg_instance(
	46	struct crypto_skcipher *skcipher)
	47	{
	48	return container_of(crypto_skcipher_alg(skcipher),
	49	struct skcipher_instance, alg);
	50	}
	51
	52	static inline void skcipher_instance_ctx(struct skcipher_instance inst)
	53	{
	54	return crypto_instance_ctx(skcipher_crypto_instance(inst));
	55	}
	56
	57	static inline void skcipher_request_complete(struct skcipher_request *req, int err)
	58	{
	59	req->base.complete(&req->base, err);
	60	}
	61
378f4f51 HX	62	static inline void crypto_set_skcipher_spawn(
	63	struct crypto_skcipher_spawn spawn, struct crypto_instance inst)
	64	{
	65	crypto_set_spawn(&spawn->base, inst);
	66	}
	67
	68	int crypto_grab_skcipher(struct crypto_skcipher_spawn spawn, const char name,
	69	u32 type, u32 mask);
3a01d0ee HX	70
	71	static inline int crypto_grab_skcipher2(struct crypto_skcipher_spawn *spawn,
	72	const char *name, u32 type, u32 mask)
	73	{
	74	return crypto_grab_skcipher(spawn, name, type, mask);
	75	}
378f4f51	76
1e122994 SK	77	struct crypto_alg crypto_lookup_skcipher(const char name, u32 type, u32 mask);
1e122994 SK	78
378f4f51 HX	79	static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
	80	{
	81	crypto_drop_spawn(&spawn->base);
	82	}
	83
3a01d0ee	84	static inline struct skcipher_alg *crypto_skcipher_spawn_alg(
378f4f51 HX	85	struct crypto_skcipher_spawn *spawn)
378f4f51 HX	86	{
3a01d0ee	87	return container_of(spawn->base.alg, struct skcipher_alg, base);
378f4f51 HX	88	}
378f4f51 HX	89
4e6c3df4 HX	90	static inline struct skcipher_alg *crypto_spawn_skcipher_alg(
	91	struct crypto_skcipher_spawn *spawn)
	92	{
3a01d0ee	93	return crypto_skcipher_spawn_alg(spawn);
4e6c3df4 HX	94	}
4e6c3df4 HX	95
3a01d0ee	96	static inline struct crypto_skcipher *crypto_spawn_skcipher(
378f4f51 HX	97	struct crypto_skcipher_spawn *spawn)
378f4f51 HX	98	{
3a01d0ee	99	return crypto_spawn_tfm2(&spawn->base);
378f4f51 HX	100	}
378f4f51 HX	101
4e6c3df4 HX	102	static inline struct crypto_skcipher *crypto_spawn_skcipher2(
	103	struct crypto_skcipher_spawn *spawn)
	104	{
3a01d0ee	105	return crypto_spawn_skcipher(spawn);
4e6c3df4 HX	106	}
	107
	108	static inline void crypto_skcipher_set_reqsize(
	109	struct crypto_skcipher *skcipher, unsigned int reqsize)
	110	{
	111	skcipher->reqsize = reqsize;
	112	}
	113
	114	int crypto_register_skcipher(struct skcipher_alg *alg);
	115	void crypto_unregister_skcipher(struct skcipher_alg *alg);
	116	int crypto_register_skciphers(struct skcipher_alg *algs, int count);
	117	void crypto_unregister_skciphers(struct skcipher_alg *algs, int count);
	118	int skcipher_register_instance(struct crypto_template *tmpl,
	119	struct skcipher_instance *inst);
	120
15c67286 HX	121	static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
	122	int err)
	123	{
	124	req->base.complete(&req->base, err);
	125	}
	126
3631c650 HX	127	static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
	128	{
	129	return req->base.flags;
	130	}
	131
7a7ffe65 HX	132	static inline void crypto_skcipher_ctx(struct crypto_skcipher tfm)
	133	{
	134	return crypto_tfm_ctx(&tfm->base);
	135	}
	136
	137	static inline void skcipher_request_ctx(struct skcipher_request req)
	138	{
	139	return req->__ctx;
	140	}
	141
	142	static inline u32 skcipher_request_flags(struct skcipher_request *req)
	143	{
	144	return req->base.flags;
	145	}
	146
4e6c3df4 HX	147	static inline unsigned int crypto_skcipher_alg_min_keysize(
	148	struct skcipher_alg *alg)
	149	{
	150	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
	151	CRYPTO_ALG_TYPE_BLKCIPHER)
	152	return alg->base.cra_blkcipher.min_keysize;
	153
	154	if (alg->base.cra_ablkcipher.encrypt)
	155	return alg->base.cra_ablkcipher.min_keysize;
	156
	157	return alg->min_keysize;
	158	}
	159
	160	static inline unsigned int crypto_skcipher_alg_max_keysize(
	161	struct skcipher_alg *alg)
	162	{
	163	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
	164	CRYPTO_ALG_TYPE_BLKCIPHER)
	165	return alg->base.cra_blkcipher.max_keysize;
	166
	167	if (alg->base.cra_ablkcipher.encrypt)
	168	return alg->base.cra_ablkcipher.max_keysize;
	169
	170	return alg->max_keysize;
	171	}
	172
378f4f51 HX	173	#endif /* _CRYPTO_INTERNAL_SKCIPHER_H */
378f4f51 HX	174