[linux.git] / include / crypto / hash.h

/*
 * Hash: Hash algorithms under the crypto API
 * 
 * Copyright (c) 2008 Herbert Xu <[email protected]>
 *
 * 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_HASH_H
#define _CRYPTO_HASH_H

#include <linux/crypto.h>

struct crypto_ahash;

struct hash_alg_common {
	unsigned int digestsize;
	unsigned int statesize;

	struct crypto_alg base;
};

struct ahash_request {
	struct crypto_async_request base;

	unsigned int nbytes;
	struct scatterlist *src;
	u8 *result;

	/* This field may only be used by the ahash API code. */
	void *priv;

	void *__ctx[] CRYPTO_MINALIGN_ATTR;
};

struct ahash_alg {
	int (*init)(struct ahash_request *req);
	int (*update)(struct ahash_request *req);
	int (*final)(struct ahash_request *req);
	int (*finup)(struct ahash_request *req);
	int (*digest)(struct ahash_request *req);
	int (*export)(struct ahash_request *req, void *out);
	int (*import)(struct ahash_request *req, const void *in);
	int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
		      unsigned int keylen);

	struct hash_alg_common halg;
};

struct shash_desc {
	struct crypto_shash *tfm;
	u32 flags;

	void *__ctx[] CRYPTO_MINALIGN_ATTR;
};

struct shash_alg {
	int (*init)(struct shash_desc *desc);
	int (*update)(struct shash_desc *desc, const u8 *data,
		      unsigned int len);
	int (*final)(struct shash_desc *desc, u8 *out);
	int (*finup)(struct shash_desc *desc, const u8 *data,
		     unsigned int len, u8 *out);
	int (*digest)(struct shash_desc *desc, const u8 *data,
		      unsigned int len, u8 *out);
	int (*export)(struct shash_desc *desc, void *out);
	int (*import)(struct shash_desc *desc, const void *in);
	int (*setkey)(struct crypto_shash *tfm, const u8 *key,
		      unsigned int keylen);

	unsigned int descsize;

	/* These fields must match hash_alg_common. */
	unsigned int digestsize
		__attribute__ ((aligned(__alignof__(struct hash_alg_common))));
	unsigned int statesize;

	struct crypto_alg base;
};

struct crypto_ahash {
	int (*init)(struct ahash_request *req);
	int (*update)(struct ahash_request *req);
	int (*final)(struct ahash_request *req);
	int (*finup)(struct ahash_request *req);
	int (*digest)(struct ahash_request *req);
	int (*export)(struct ahash_request *req, void *out);
	int (*import)(struct ahash_request *req, const void *in);
	int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
		      unsigned int keylen);

	unsigned int reqsize;
	struct crypto_tfm base;
};

struct crypto_shash {
	unsigned int descsize;
	struct crypto_tfm base;
};

static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm)
{
	return container_of(tfm, struct crypto_ahash, base);
}

struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, u32 type,
					u32 mask);

static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm)
{
	return &tfm->base;
}

static inline void crypto_free_ahash(struct crypto_ahash *tfm)
{
	crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm));
}

static inline unsigned int crypto_ahash_alignmask(
	struct crypto_ahash *tfm)
{
	return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
}

static inline struct hash_alg_common *__crypto_hash_alg_common(
	struct crypto_alg *alg)
{
	return container_of(alg, struct hash_alg_common, base);
}

static inline struct hash_alg_common *crypto_hash_alg_common(
	struct crypto_ahash *tfm)
{
	return __crypto_hash_alg_common(crypto_ahash_tfm(tfm)->__crt_alg);
}

static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
{
	return crypto_hash_alg_common(tfm)->digestsize;
}

static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm)
{
	return crypto_hash_alg_common(tfm)->statesize;
}

static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
{
	return crypto_tfm_get_flags(crypto_ahash_tfm(tfm));
}

static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags)
{
	crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags);
}

static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags)
{
	crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags);
}

static inline struct crypto_ahash *crypto_ahash_reqtfm(
	struct ahash_request *req)
{
	return __crypto_ahash_cast(req->base.tfm);
}

static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
{
	return tfm->reqsize;
}

static inline void *ahash_request_ctx(struct ahash_request *req)
{
	return req->__ctx;
}

int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
			unsigned int keylen);
int crypto_ahash_finup(struct ahash_request *req);
int crypto_ahash_final(struct ahash_request *req);
int crypto_ahash_digest(struct ahash_request *req);

static inline int crypto_ahash_export(struct ahash_request *req, void *out)
{
	return crypto_ahash_reqtfm(req)->export(req, out);
}

static inline int crypto_ahash_import(struct ahash_request *req, const void *in)
{
	return crypto_ahash_reqtfm(req)->import(req, in);
}

static inline int crypto_ahash_init(struct ahash_request *req)
{
	return crypto_ahash_reqtfm(req)->init(req);
}

static inline int crypto_ahash_update(struct ahash_request *req)
{
	return crypto_ahash_reqtfm(req)->update(req);
}

static inline void ahash_request_set_tfm(struct ahash_request *req,
					 struct crypto_ahash *tfm)
{
	req->base.tfm = crypto_ahash_tfm(tfm);
}

static inline struct ahash_request *ahash_request_alloc(
	struct crypto_ahash *tfm, gfp_t gfp)
{
	struct ahash_request *req;

	req = kmalloc(sizeof(struct ahash_request) +
		      crypto_ahash_reqsize(tfm), gfp);

	if (likely(req))
		ahash_request_set_tfm(req, tfm);

	return req;
}

static inline void ahash_request_free(struct ahash_request *req)
{
	kzfree(req);
}

static inline struct ahash_request *ahash_request_cast(
	struct crypto_async_request *req)
{
	return container_of(req, struct ahash_request, base);
}

static inline void ahash_request_set_callback(struct ahash_request *req,
					      u32 flags,
					      crypto_completion_t complete,
					      void *data)
{
	req->base.complete = complete;
	req->base.data = data;
	req->base.flags = flags;
}

static inline void ahash_request_set_crypt(struct ahash_request *req,
					   struct scatterlist *src, u8 *result,
					   unsigned int nbytes)
{
	req->src = src;
	req->nbytes = nbytes;
	req->result = result;
}

struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type,
					u32 mask);

static inline struct crypto_tfm *crypto_shash_tfm(struct crypto_shash *tfm)
{
	return &tfm->base;
}

static inline void crypto_free_shash(struct crypto_shash *tfm)
{
	crypto_destroy_tfm(tfm, crypto_shash_tfm(tfm));
}

static inline unsigned int crypto_shash_alignmask(
	struct crypto_shash *tfm)
{
	return crypto_tfm_alg_alignmask(crypto_shash_tfm(tfm));
}

static inline unsigned int crypto_shash_blocksize(struct crypto_shash *tfm)
{
	return crypto_tfm_alg_blocksize(crypto_shash_tfm(tfm));
}

static inline struct shash_alg *__crypto_shash_alg(struct crypto_alg *alg)
{
	return container_of(alg, struct shash_alg, base);
}

static inline struct shash_alg *crypto_shash_alg(struct crypto_shash *tfm)
{
	return __crypto_shash_alg(crypto_shash_tfm(tfm)->__crt_alg);
}

static inline unsigned int crypto_shash_digestsize(struct crypto_shash *tfm)
{
	return crypto_shash_alg(tfm)->digestsize;
}

static inline unsigned int crypto_shash_statesize(struct crypto_shash *tfm)
{
	return crypto_shash_alg(tfm)->statesize;
}

static inline u32 crypto_shash_get_flags(struct crypto_shash *tfm)
{
	return crypto_tfm_get_flags(crypto_shash_tfm(tfm));
}

static inline void crypto_shash_set_flags(struct crypto_shash *tfm, u32 flags)
{
	crypto_tfm_set_flags(crypto_shash_tfm(tfm), flags);
}

static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags)
{
	crypto_tfm_clear_flags(crypto_shash_tfm(tfm), flags);
}

static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm)
{
	return tfm->descsize;
}

static inline void *shash_desc_ctx(struct shash_desc *desc)
{
	return desc->__ctx;
}

int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key,
			unsigned int keylen);
int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
			unsigned int len, u8 *out);

static inline int crypto_shash_export(struct shash_desc *desc, void *out)
{
	return crypto_shash_alg(desc->tfm)->export(desc, out);
}

static inline int crypto_shash_import(struct shash_desc *desc, const void *in)
{
	return crypto_shash_alg(desc->tfm)->import(desc, in);
}

static inline int crypto_shash_init(struct shash_desc *desc)
{
	return crypto_shash_alg(desc->tfm)->init(desc);
}

int crypto_shash_update(struct shash_desc *desc, const u8 *data,
			unsigned int len);
int crypto_shash_final(struct shash_desc *desc, u8 *out);
int crypto_shash_finup(struct shash_desc *desc, const u8 *data,
		       unsigned int len, u8 *out);

#endif	/* _CRYPTO_HASH_H */
Commit	Line	Data
18e33e6d HX	1	/*
	2	* Hash: Hash algorithms under the crypto API
	3	*
	4	* Copyright (c) 2008 Herbert Xu <[email protected]>
	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_HASH_H
	14	#define _CRYPTO_HASH_H
	15
	16	#include <linux/crypto.h>
	17
88056ec3 HX	18	struct crypto_ahash;
	19
	20	struct hash_alg_common {
	21	unsigned int digestsize;
	22	unsigned int statesize;
	23
	24	struct crypto_alg base;
	25	};
	26
	27	struct ahash_request {
	28	struct crypto_async_request base;
	29
	30	unsigned int nbytes;
	31	struct scatterlist *src;
	32	u8 *result;
	33
66f6ce5e HX	34	/* This field may only be used by the ahash API code. */
	35	void *priv;
	36
88056ec3 HX	37	void *__ctx[] CRYPTO_MINALIGN_ATTR;
	38	};
	39
	40	struct ahash_alg {
	41	int (init)(struct ahash_request req);
	42	int (update)(struct ahash_request req);
	43	int (final)(struct ahash_request req);
	44	int (finup)(struct ahash_request req);
	45	int (digest)(struct ahash_request req);
	46	int (export)(struct ahash_request req, void *out);
	47	int (import)(struct ahash_request req, const void *in);
	48	int (setkey)(struct crypto_ahash tfm, const u8 *key,
	49	unsigned int keylen);
	50
	51	struct hash_alg_common halg;
	52	};
	53
7b5a080b HX	54	struct shash_desc {
	55	struct crypto_shash *tfm;
	56	u32 flags;
	57
	58	void *__ctx[] CRYPTO_MINALIGN_ATTR;
	59	};
	60
	61	struct shash_alg {
	62	int (init)(struct shash_desc desc);
	63	int (update)(struct shash_desc desc, const u8 *data,
	64	unsigned int len);
	65	int (final)(struct shash_desc desc, u8 *out);
	66	int (finup)(struct shash_desc desc, const u8 *data,
	67	unsigned int len, u8 *out);
	68	int (digest)(struct shash_desc desc, const u8 *data,
	69	unsigned int len, u8 *out);
99d27e1c HX	70	int (export)(struct shash_desc desc, void *out);
99d27e1c HX	71	int (import)(struct shash_desc desc, const void *in);
7b5a080b HX	72	int (setkey)(struct crypto_shash tfm, const u8 *key,
	73	unsigned int keylen);
	74
	75	unsigned int descsize;
88056ec3 HX	76
88056ec3 HX	77	/* These fields must match hash_alg_common. */
fa649664 HX	78	unsigned int digestsize
fa649664 HX	79	__attribute__ ((aligned(__alignof__(struct hash_alg_common))));
99d27e1c	80	unsigned int statesize;
7b5a080b HX	81
	82	struct crypto_alg base;
	83	};
	84
18e33e6d	85	struct crypto_ahash {
88056ec3 HX	86	int (init)(struct ahash_request req);
	87	int (update)(struct ahash_request req);
	88	int (final)(struct ahash_request req);
	89	int (finup)(struct ahash_request req);
	90	int (digest)(struct ahash_request req);
	91	int (export)(struct ahash_request req, void *out);
	92	int (import)(struct ahash_request req, const void *in);
	93	int (setkey)(struct crypto_ahash tfm, const u8 *key,
	94	unsigned int keylen);
	95
88056ec3	96	unsigned int reqsize;
18e33e6d HX	97	struct crypto_tfm base;
	98	};
	99
7b5a080b	100	struct crypto_shash {
113adefc	101	unsigned int descsize;
7b5a080b HX	102	struct crypto_tfm base;
	103	};
	104
18e33e6d HX	105	static inline struct crypto_ahash __crypto_ahash_cast(struct crypto_tfm tfm)
18e33e6d HX	106	{
88056ec3	107	return container_of(tfm, struct crypto_ahash, base);
18e33e6d HX	108	}
18e33e6d HX	109
88056ec3 HX	110	struct crypto_ahash crypto_alloc_ahash(const char alg_name, u32 type,
88056ec3 HX	111	u32 mask);
18e33e6d HX	112
	113	static inline struct crypto_tfm crypto_ahash_tfm(struct crypto_ahash tfm)
	114	{
	115	return &tfm->base;
	116	}
	117
	118	static inline void crypto_free_ahash(struct crypto_ahash *tfm)
	119	{
88056ec3	120	crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm));
18e33e6d HX	121	}
	122
	123	static inline unsigned int crypto_ahash_alignmask(
	124	struct crypto_ahash *tfm)
	125	{
	126	return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
	127	}
	128
88056ec3 HX	129	static inline struct hash_alg_common *__crypto_hash_alg_common(
	130	struct crypto_alg *alg)
	131	{
	132	return container_of(alg, struct hash_alg_common, base);
	133	}
	134
	135	static inline struct hash_alg_common *crypto_hash_alg_common(
	136	struct crypto_ahash *tfm)
18e33e6d	137	{
88056ec3	138	return __crypto_hash_alg_common(crypto_ahash_tfm(tfm)->__crt_alg);
18e33e6d HX	139	}
	140
	141	static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
	142	{
500b3e3c	143	return crypto_hash_alg_common(tfm)->digestsize;
88056ec3 HX	144	}
	145
	146	static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm)
	147	{
	148	return crypto_hash_alg_common(tfm)->statesize;
18e33e6d HX	149	}
	150
	151	static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
	152	{
	153	return crypto_tfm_get_flags(crypto_ahash_tfm(tfm));
	154	}
	155
	156	static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags)
	157	{
	158	crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags);
	159	}
	160
	161	static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags)
	162	{
	163	crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags);
	164	}
	165
	166	static inline struct crypto_ahash *crypto_ahash_reqtfm(
	167	struct ahash_request *req)
	168	{
	169	return __crypto_ahash_cast(req->base.tfm);
	170	}
	171
	172	static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
	173	{
88056ec3	174	return tfm->reqsize;
18e33e6d HX	175	}
18e33e6d HX	176
dec8b786 HX	177	static inline void ahash_request_ctx(struct ahash_request req)
	178	{
	179	return req->__ctx;
	180	}
	181
66f6ce5e HX	182	int crypto_ahash_setkey(struct crypto_ahash tfm, const u8 key,
	183	unsigned int keylen);
	184	int crypto_ahash_finup(struct ahash_request *req);
	185	int crypto_ahash_final(struct ahash_request *req);
	186	int crypto_ahash_digest(struct ahash_request *req);
18e33e6d	187
88056ec3	188	static inline int crypto_ahash_export(struct ahash_request req, void out)
dec8b786	189	{
88056ec3	190	return crypto_ahash_reqtfm(req)->export(req, out);
dec8b786 HX	191	}
dec8b786 HX	192
88056ec3 HX	193	static inline int crypto_ahash_import(struct ahash_request req, const void in)
	194	{
	195	return crypto_ahash_reqtfm(req)->import(req, in);
	196	}
dec8b786	197
318e5313 HX	198	static inline int crypto_ahash_init(struct ahash_request *req)
318e5313 HX	199	{
88056ec3	200	return crypto_ahash_reqtfm(req)->init(req);
318e5313 HX	201	}
	202
	203	static inline int crypto_ahash_update(struct ahash_request *req)
	204	{
88056ec3	205	return crypto_ahash_reqtfm(req)->update(req);
318e5313 HX	206	}
318e5313 HX	207
18e33e6d HX	208	static inline void ahash_request_set_tfm(struct ahash_request *req,
	209	struct crypto_ahash *tfm)
	210	{
	211	req->base.tfm = crypto_ahash_tfm(tfm);
	212	}
	213
	214	static inline struct ahash_request *ahash_request_alloc(
	215	struct crypto_ahash *tfm, gfp_t gfp)
	216	{
	217	struct ahash_request *req;
	218
	219	req = kmalloc(sizeof(struct ahash_request) +
	220	crypto_ahash_reqsize(tfm), gfp);
	221
	222	if (likely(req))
	223	ahash_request_set_tfm(req, tfm);
	224
	225	return req;
	226	}
	227
	228	static inline void ahash_request_free(struct ahash_request *req)
	229	{
aef73cfc	230	kzfree(req);
18e33e6d HX	231	}
	232
	233	static inline struct ahash_request *ahash_request_cast(
	234	struct crypto_async_request *req)
	235	{
	236	return container_of(req, struct ahash_request, base);
	237	}
	238
	239	static inline void ahash_request_set_callback(struct ahash_request *req,
	240	u32 flags,
	241	crypto_completion_t complete,
	242	void *data)
	243	{
	244	req->base.complete = complete;
	245	req->base.data = data;
	246	req->base.flags = flags;
	247	}
	248
	249	static inline void ahash_request_set_crypt(struct ahash_request *req,
	250	struct scatterlist src, u8 result,
	251	unsigned int nbytes)
	252	{
	253	req->src = src;
	254	req->nbytes = nbytes;
	255	req->result = result;
	256	}
	257
7b5a080b HX	258	struct crypto_shash crypto_alloc_shash(const char alg_name, u32 type,
	259	u32 mask);
	260
	261	static inline struct crypto_tfm crypto_shash_tfm(struct crypto_shash tfm)
	262	{
	263	return &tfm->base;
	264	}
	265
	266	static inline void crypto_free_shash(struct crypto_shash *tfm)
	267	{
412e87ae	268	crypto_destroy_tfm(tfm, crypto_shash_tfm(tfm));
7b5a080b HX	269	}
	270
	271	static inline unsigned int crypto_shash_alignmask(
	272	struct crypto_shash *tfm)
	273	{
	274	return crypto_tfm_alg_alignmask(crypto_shash_tfm(tfm));
	275	}
	276
97495986 HX	277	static inline unsigned int crypto_shash_blocksize(struct crypto_shash *tfm)
	278	{
	279	return crypto_tfm_alg_blocksize(crypto_shash_tfm(tfm));
	280	}
	281
7b5a080b HX	282	static inline struct shash_alg __crypto_shash_alg(struct crypto_alg alg)
	283	{
	284	return container_of(alg, struct shash_alg, base);
	285	}
	286
	287	static inline struct shash_alg crypto_shash_alg(struct crypto_shash tfm)
	288	{
	289	return __crypto_shash_alg(crypto_shash_tfm(tfm)->__crt_alg);
	290	}
	291
	292	static inline unsigned int crypto_shash_digestsize(struct crypto_shash *tfm)
	293	{
	294	return crypto_shash_alg(tfm)->digestsize;
	295	}
	296
99d27e1c HX	297	static inline unsigned int crypto_shash_statesize(struct crypto_shash *tfm)
	298	{
	299	return crypto_shash_alg(tfm)->statesize;
	300	}
	301
7b5a080b HX	302	static inline u32 crypto_shash_get_flags(struct crypto_shash *tfm)
	303	{
	304	return crypto_tfm_get_flags(crypto_shash_tfm(tfm));
	305	}
	306
	307	static inline void crypto_shash_set_flags(struct crypto_shash *tfm, u32 flags)
	308	{
	309	crypto_tfm_set_flags(crypto_shash_tfm(tfm), flags);
	310	}
	311
	312	static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags)
	313	{
	314	crypto_tfm_clear_flags(crypto_shash_tfm(tfm), flags);
	315	}
	316
	317	static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm)
	318	{
113adefc	319	return tfm->descsize;
7b5a080b HX	320	}
	321
	322	static inline void shash_desc_ctx(struct shash_desc desc)
	323	{
	324	return desc->__ctx;
	325	}
	326
	327	int crypto_shash_setkey(struct crypto_shash tfm, const u8 key,
	328	unsigned int keylen);
	329	int crypto_shash_digest(struct shash_desc desc, const u8 data,
	330	unsigned int len, u8 *out);
	331
99d27e1c	332	static inline int crypto_shash_export(struct shash_desc desc, void out)
dec8b786	333	{
99d27e1c	334	return crypto_shash_alg(desc->tfm)->export(desc, out);
dec8b786 HX	335	}
dec8b786 HX	336
99d27e1c HX	337	static inline int crypto_shash_import(struct shash_desc desc, const void in)
	338	{
	339	return crypto_shash_alg(desc->tfm)->import(desc, in);
	340	}
dec8b786	341
7b5a080b HX	342	static inline int crypto_shash_init(struct shash_desc *desc)
	343	{
	344	return crypto_shash_alg(desc->tfm)->init(desc);
	345	}
	346
	347	int crypto_shash_update(struct shash_desc desc, const u8 data,
	348	unsigned int len);
	349	int crypto_shash_final(struct shash_desc desc, u8 out);
	350	int crypto_shash_finup(struct shash_desc desc, const u8 data,
	351	unsigned int len, u8 *out);
	352
18e33e6d	353	#endif /* _CRYPTO_HASH_H */