[mirror_ubuntu-jammy-kernel.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/list.h>
#include <linux/types.h>

struct aead_request;
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;
};

struct skcipher_walk {
	union {
		struct {
			struct page *page;
			unsigned long offset;
		} phys;

		struct {
			u8 *page;
			void *addr;
		} virt;
	} src, dst;

	struct scatter_walk in;
	unsigned int nbytes;

	struct scatter_walk out;
	unsigned int total;

	struct list_head buffers;

	u8 *page;
	u8 *buffer;
	u8 *oiv;
	void *iv;

	unsigned int ivsize;

	int flags;
	unsigned int blocksize;
	unsigned int chunksize;
	unsigned int alignmask;
};

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 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 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);

int skcipher_walk_done(struct skcipher_walk *walk, int err);
int skcipher_walk_virt(struct skcipher_walk *walk,
		       struct skcipher_request *req,
		       bool atomic);
void skcipher_walk_atomise(struct skcipher_walk *walk);
int skcipher_walk_async(struct skcipher_walk *walk,
			struct skcipher_request *req);
int skcipher_walk_aead(struct skcipher_walk *walk, struct aead_request *req,
		       bool atomic);
int skcipher_walk_aead_encrypt(struct skcipher_walk *walk,
			       struct aead_request *req, bool atomic);
int skcipher_walk_aead_decrypt(struct skcipher_walk *walk,
			       struct aead_request *req, bool atomic);
void skcipher_walk_complete(struct skcipher_walk *walk, int err);

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>
b286d8b1	18	#include <linux/list.h>
ecfc4329 HX	19	#include <linux/types.h>
ecfc4329 HX	20
b286d8b1	21	struct aead_request;
ecfc4329	22	struct rtattr;
378f4f51	23
4e6c3df4 HX	24	struct skcipher_instance {
	25	void (free)(struct skcipher_instance inst);
	26	union {
	27	struct {
	28	char head[offsetof(struct skcipher_alg, base)];
	29	struct crypto_instance base;
	30	} s;
	31	struct skcipher_alg alg;
	32	};
	33	};
	34
378f4f51 HX	35	struct crypto_skcipher_spawn {
	36	struct crypto_spawn base;
	37	};
	38
b286d8b1 HX	39	struct skcipher_walk {
	40	union {
	41	struct {
	42	struct page *page;
	43	unsigned long offset;
	44	} phys;
	45
	46	struct {
	47	u8 *page;
	48	void *addr;
	49	} virt;
	50	} src, dst;
	51
	52	struct scatter_walk in;
	53	unsigned int nbytes;
	54
	55	struct scatter_walk out;
	56	unsigned int total;
	57
	58	struct list_head buffers;
	59
	60	u8 *page;
	61	u8 *buffer;
	62	u8 *oiv;
	63	void *iv;
	64
	65	unsigned int ivsize;
	66
	67	int flags;
	68	unsigned int blocksize;
	69	unsigned int chunksize;
	70	unsigned int alignmask;
	71	};
	72
61da88e2 HX	73	extern const struct crypto_type crypto_givcipher_type;
61da88e2 HX	74
4e6c3df4 HX	75	static inline struct crypto_instance *skcipher_crypto_instance(
	76	struct skcipher_instance *inst)
	77	{
	78	return &inst->s.base;
	79	}
	80
	81	static inline struct skcipher_instance *skcipher_alg_instance(
	82	struct crypto_skcipher *skcipher)
	83	{
	84	return container_of(crypto_skcipher_alg(skcipher),
	85	struct skcipher_instance, alg);
	86	}
	87
	88	static inline void skcipher_instance_ctx(struct skcipher_instance inst)
	89	{
	90	return crypto_instance_ctx(skcipher_crypto_instance(inst));
	91	}
	92
	93	static inline void skcipher_request_complete(struct skcipher_request *req, int err)
	94	{
	95	req->base.complete(&req->base, err);
	96	}
	97
378f4f51 HX	98	static inline void crypto_set_skcipher_spawn(
	99	struct crypto_skcipher_spawn spawn, struct crypto_instance inst)
	100	{
	101	crypto_set_spawn(&spawn->base, inst);
	102	}
	103
	104	int crypto_grab_skcipher(struct crypto_skcipher_spawn spawn, const char name,
	105	u32 type, u32 mask);
3a01d0ee	106
378f4f51 HX	107	static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
	108	{
	109	crypto_drop_spawn(&spawn->base);
	110	}
	111
3a01d0ee	112	static inline struct skcipher_alg *crypto_skcipher_spawn_alg(
378f4f51 HX	113	struct crypto_skcipher_spawn *spawn)
378f4f51 HX	114	{
3a01d0ee	115	return container_of(spawn->base.alg, struct skcipher_alg, base);
378f4f51 HX	116	}
378f4f51 HX	117
4e6c3df4 HX	118	static inline struct skcipher_alg *crypto_spawn_skcipher_alg(
	119	struct crypto_skcipher_spawn *spawn)
	120	{
3a01d0ee	121	return crypto_skcipher_spawn_alg(spawn);
4e6c3df4 HX	122	}
4e6c3df4 HX	123
3a01d0ee	124	static inline struct crypto_skcipher *crypto_spawn_skcipher(
378f4f51 HX	125	struct crypto_skcipher_spawn *spawn)
378f4f51 HX	126	{
3a01d0ee	127	return crypto_spawn_tfm2(&spawn->base);
378f4f51 HX	128	}
378f4f51 HX	129
4e6c3df4 HX	130	static inline void crypto_skcipher_set_reqsize(
	131	struct crypto_skcipher *skcipher, unsigned int reqsize)
	132	{
	133	skcipher->reqsize = reqsize;
	134	}
	135
	136	int crypto_register_skcipher(struct skcipher_alg *alg);
	137	void crypto_unregister_skcipher(struct skcipher_alg *alg);
	138	int crypto_register_skciphers(struct skcipher_alg *algs, int count);
	139	void crypto_unregister_skciphers(struct skcipher_alg *algs, int count);
	140	int skcipher_register_instance(struct crypto_template *tmpl,
	141	struct skcipher_instance *inst);
	142
b286d8b1 HX	143	int skcipher_walk_done(struct skcipher_walk *walk, int err);
	144	int skcipher_walk_virt(struct skcipher_walk *walk,
	145	struct skcipher_request *req,
	146	bool atomic);
	147	void skcipher_walk_atomise(struct skcipher_walk *walk);
	148	int skcipher_walk_async(struct skcipher_walk *walk,
	149	struct skcipher_request *req);
	150	int skcipher_walk_aead(struct skcipher_walk walk, struct aead_request req,
	151	bool atomic);
34bc085c HX	152	int skcipher_walk_aead_encrypt(struct skcipher_walk *walk,
	153	struct aead_request *req, bool atomic);
	154	int skcipher_walk_aead_decrypt(struct skcipher_walk *walk,
	155	struct aead_request *req, bool atomic);
b286d8b1 HX	156	void skcipher_walk_complete(struct skcipher_walk *walk, int err);
b286d8b1 HX	157
15c67286 HX	158	static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
	159	int err)
	160	{
	161	req->base.complete(&req->base, err);
	162	}
	163
3631c650 HX	164	static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
	165	{
	166	return req->base.flags;
	167	}
	168
7a7ffe65 HX	169	static inline void crypto_skcipher_ctx(struct crypto_skcipher tfm)
	170	{
	171	return crypto_tfm_ctx(&tfm->base);
	172	}
	173
	174	static inline void skcipher_request_ctx(struct skcipher_request req)
	175	{
	176	return req->__ctx;
	177	}
	178
	179	static inline u32 skcipher_request_flags(struct skcipher_request *req)
	180	{
	181	return req->base.flags;
	182	}
	183
4e6c3df4 HX	184	static inline unsigned int crypto_skcipher_alg_min_keysize(
	185	struct skcipher_alg *alg)
	186	{
	187	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
	188	CRYPTO_ALG_TYPE_BLKCIPHER)
	189	return alg->base.cra_blkcipher.min_keysize;
	190
	191	if (alg->base.cra_ablkcipher.encrypt)
	192	return alg->base.cra_ablkcipher.min_keysize;
	193
	194	return alg->min_keysize;
	195	}
	196
	197	static inline unsigned int crypto_skcipher_alg_max_keysize(
	198	struct skcipher_alg *alg)
	199	{
	200	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
	201	CRYPTO_ALG_TYPE_BLKCIPHER)
	202	return alg->base.cra_blkcipher.max_keysize;
	203
	204	if (alg->base.cra_ablkcipher.encrypt)
	205	return alg->base.cra_ablkcipher.max_keysize;
	206
	207	return alg->max_keysize;
	208	}
	209
378f4f51 HX	210	#endif /* _CRYPTO_INTERNAL_SKCIPHER_H */
378f4f51 HX	211