[mirror_ubuntu-zesty-kernel.git] / include / crypto / hash.h

/*
 * Hash: Hash algorithms under the crypto API
 * 
 * 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_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;

	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;
	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 digestsize;
	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 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;
}

static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
				      const u8 *key, unsigned int keylen)
{
	return tfm->setkey(tfm, key, keylen);
}

static inline int crypto_ahash_digest(struct ahash_request *req)
{
	return crypto_ahash_reqtfm(req)->digest(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 int crypto_ahash_final(struct ahash_request *req)
{
	return crypto_ahash_reqtfm(req)->final(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 <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_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
	34	void *__ctx[] CRYPTO_MINALIGN_ATTR;
	35	};
	36
	37	struct ahash_alg {
	38	int (init)(struct ahash_request req);
	39	int (update)(struct ahash_request req);
	40	int (final)(struct ahash_request req);
	41	int (finup)(struct ahash_request req);
	42	int (digest)(struct ahash_request req);
	43	int (export)(struct ahash_request req, void *out);
	44	int (import)(struct ahash_request req, const void *in);
	45	int (setkey)(struct crypto_ahash tfm, const u8 *key,
	46	unsigned int keylen);
	47
	48	struct hash_alg_common halg;
	49	};
	50
7b5a080b HX	51	struct shash_desc {
	52	struct crypto_shash *tfm;
	53	u32 flags;
	54
	55	void *__ctx[] CRYPTO_MINALIGN_ATTR;
	56	};
	57
	58	struct shash_alg {
	59	int (init)(struct shash_desc desc);
	60	int (update)(struct shash_desc desc, const u8 *data,
	61	unsigned int len);
	62	int (final)(struct shash_desc desc, u8 *out);
	63	int (finup)(struct shash_desc desc, const u8 *data,
	64	unsigned int len, u8 *out);
	65	int (digest)(struct shash_desc desc, const u8 *data,
	66	unsigned int len, u8 *out);
99d27e1c HX	67	int (export)(struct shash_desc desc, void *out);
99d27e1c HX	68	int (import)(struct shash_desc desc, const void *in);
7b5a080b HX	69	int (setkey)(struct crypto_shash tfm, const u8 *key,
	70	unsigned int keylen);
	71
	72	unsigned int descsize;
88056ec3 HX	73
88056ec3 HX	74	/* These fields must match hash_alg_common. */
7b5a080b	75	unsigned int digestsize;
99d27e1c	76	unsigned int statesize;
7b5a080b HX	77
	78	struct crypto_alg base;
	79	};
	80
18e33e6d	81	struct crypto_ahash {
88056ec3 HX	82	int (init)(struct ahash_request req);
	83	int (update)(struct ahash_request req);
	84	int (final)(struct ahash_request req);
	85	int (finup)(struct ahash_request req);
	86	int (digest)(struct ahash_request req);
	87	int (export)(struct ahash_request req, void *out);
	88	int (import)(struct ahash_request req, const void *in);
	89	int (setkey)(struct crypto_ahash tfm, const u8 *key,
	90	unsigned int keylen);
	91
	92	unsigned int digestsize;
	93	unsigned int reqsize;
18e33e6d HX	94	struct crypto_tfm base;
	95	};
	96
7b5a080b	97	struct crypto_shash {
113adefc	98	unsigned int descsize;
7b5a080b HX	99	struct crypto_tfm base;
	100	};
	101
18e33e6d HX	102	static inline struct crypto_ahash __crypto_ahash_cast(struct crypto_tfm tfm)
18e33e6d HX	103	{
88056ec3	104	return container_of(tfm, struct crypto_ahash, base);
18e33e6d HX	105	}
18e33e6d HX	106
88056ec3 HX	107	struct crypto_ahash crypto_alloc_ahash(const char alg_name, u32 type,
88056ec3 HX	108	u32 mask);
18e33e6d HX	109
	110	static inline struct crypto_tfm crypto_ahash_tfm(struct crypto_ahash tfm)
	111	{
	112	return &tfm->base;
	113	}
	114
	115	static inline void crypto_free_ahash(struct crypto_ahash *tfm)
	116	{
88056ec3	117	crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm));
18e33e6d HX	118	}
	119
	120	static inline unsigned int crypto_ahash_alignmask(
	121	struct crypto_ahash *tfm)
	122	{
	123	return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
	124	}
	125
88056ec3 HX	126	static inline struct hash_alg_common *__crypto_hash_alg_common(
	127	struct crypto_alg *alg)
	128	{
	129	return container_of(alg, struct hash_alg_common, base);
	130	}
	131
	132	static inline struct hash_alg_common *crypto_hash_alg_common(
	133	struct crypto_ahash *tfm)
18e33e6d	134	{
88056ec3	135	return __crypto_hash_alg_common(crypto_ahash_tfm(tfm)->__crt_alg);
18e33e6d HX	136	}
	137
	138	static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
	139	{
88056ec3 HX	140	return tfm->digestsize;
	141	}
	142
	143	static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm)
	144	{
	145	return crypto_hash_alg_common(tfm)->statesize;
18e33e6d HX	146	}
	147
	148	static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
	149	{
	150	return crypto_tfm_get_flags(crypto_ahash_tfm(tfm));
	151	}
	152
	153	static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags)
	154	{
	155	crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags);
	156	}
	157
	158	static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags)
	159	{
	160	crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags);
	161	}
	162
	163	static inline struct crypto_ahash *crypto_ahash_reqtfm(
	164	struct ahash_request *req)
	165	{
	166	return __crypto_ahash_cast(req->base.tfm);
	167	}
	168
	169	static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
	170	{
88056ec3	171	return tfm->reqsize;
18e33e6d HX	172	}
18e33e6d HX	173
dec8b786 HX	174	static inline void ahash_request_ctx(struct ahash_request req)
	175	{
	176	return req->__ctx;
	177	}
	178
18e33e6d HX	179	static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
	180	const u8 *key, unsigned int keylen)
	181	{
88056ec3	182	return tfm->setkey(tfm, key, keylen);
18e33e6d HX	183	}
	184
	185	static inline int crypto_ahash_digest(struct ahash_request *req)
	186	{
88056ec3	187	return crypto_ahash_reqtfm(req)->digest(req);
18e33e6d HX	188	}
18e33e6d HX	189
88056ec3	190	static inline int crypto_ahash_export(struct ahash_request req, void out)
dec8b786	191	{
88056ec3	192	return crypto_ahash_reqtfm(req)->export(req, out);
dec8b786 HX	193	}
dec8b786 HX	194
88056ec3 HX	195	static inline int crypto_ahash_import(struct ahash_request req, const void in)
	196	{
	197	return crypto_ahash_reqtfm(req)->import(req, in);
	198	}
dec8b786	199
318e5313 HX	200	static inline int crypto_ahash_init(struct ahash_request *req)
318e5313 HX	201	{
88056ec3	202	return crypto_ahash_reqtfm(req)->init(req);
318e5313 HX	203	}
	204
	205	static inline int crypto_ahash_update(struct ahash_request *req)
	206	{
88056ec3	207	return crypto_ahash_reqtfm(req)->update(req);
318e5313 HX	208	}
	209
	210	static inline int crypto_ahash_final(struct ahash_request *req)
	211	{
88056ec3	212	return crypto_ahash_reqtfm(req)->final(req);
318e5313 HX	213	}
318e5313 HX	214
18e33e6d HX	215	static inline void ahash_request_set_tfm(struct ahash_request *req,
	216	struct crypto_ahash *tfm)
	217	{
	218	req->base.tfm = crypto_ahash_tfm(tfm);
	219	}
	220
	221	static inline struct ahash_request *ahash_request_alloc(
	222	struct crypto_ahash *tfm, gfp_t gfp)
	223	{
	224	struct ahash_request *req;
	225
	226	req = kmalloc(sizeof(struct ahash_request) +
	227	crypto_ahash_reqsize(tfm), gfp);
	228
	229	if (likely(req))
	230	ahash_request_set_tfm(req, tfm);
	231
	232	return req;
	233	}
	234
	235	static inline void ahash_request_free(struct ahash_request *req)
	236	{
aef73cfc	237	kzfree(req);
18e33e6d HX	238	}
	239
	240	static inline struct ahash_request *ahash_request_cast(
	241	struct crypto_async_request *req)
	242	{
	243	return container_of(req, struct ahash_request, base);
	244	}
	245
	246	static inline void ahash_request_set_callback(struct ahash_request *req,
	247	u32 flags,
	248	crypto_completion_t complete,
	249	void *data)
	250	{
	251	req->base.complete = complete;
	252	req->base.data = data;
	253	req->base.flags = flags;
	254	}
	255
	256	static inline void ahash_request_set_crypt(struct ahash_request *req,
	257	struct scatterlist src, u8 result,
	258	unsigned int nbytes)
	259	{
	260	req->src = src;
	261	req->nbytes = nbytes;
	262	req->result = result;
	263	}
	264
7b5a080b HX	265	struct crypto_shash crypto_alloc_shash(const char alg_name, u32 type,
	266	u32 mask);
	267
	268	static inline struct crypto_tfm crypto_shash_tfm(struct crypto_shash tfm)
	269	{
	270	return &tfm->base;
	271	}
	272
	273	static inline void crypto_free_shash(struct crypto_shash *tfm)
	274	{
412e87ae	275	crypto_destroy_tfm(tfm, crypto_shash_tfm(tfm));
7b5a080b HX	276	}
	277
	278	static inline unsigned int crypto_shash_alignmask(
	279	struct crypto_shash *tfm)
	280	{
	281	return crypto_tfm_alg_alignmask(crypto_shash_tfm(tfm));
	282	}
	283
97495986 HX	284	static inline unsigned int crypto_shash_blocksize(struct crypto_shash *tfm)
	285	{
	286	return crypto_tfm_alg_blocksize(crypto_shash_tfm(tfm));
	287	}
	288
7b5a080b HX	289	static inline struct shash_alg __crypto_shash_alg(struct crypto_alg alg)
	290	{
	291	return container_of(alg, struct shash_alg, base);
	292	}
	293
	294	static inline struct shash_alg crypto_shash_alg(struct crypto_shash tfm)
	295	{
	296	return __crypto_shash_alg(crypto_shash_tfm(tfm)->__crt_alg);
	297	}
	298
	299	static inline unsigned int crypto_shash_digestsize(struct crypto_shash *tfm)
	300	{
	301	return crypto_shash_alg(tfm)->digestsize;
	302	}
	303
99d27e1c HX	304	static inline unsigned int crypto_shash_statesize(struct crypto_shash *tfm)
	305	{
	306	return crypto_shash_alg(tfm)->statesize;
	307	}
	308
7b5a080b HX	309	static inline u32 crypto_shash_get_flags(struct crypto_shash *tfm)
	310	{
	311	return crypto_tfm_get_flags(crypto_shash_tfm(tfm));
	312	}
	313
	314	static inline void crypto_shash_set_flags(struct crypto_shash *tfm, u32 flags)
	315	{
	316	crypto_tfm_set_flags(crypto_shash_tfm(tfm), flags);
	317	}
	318
	319	static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags)
	320	{
	321	crypto_tfm_clear_flags(crypto_shash_tfm(tfm), flags);
	322	}
	323
	324	static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm)
	325	{
113adefc	326	return tfm->descsize;
7b5a080b HX	327	}
	328
	329	static inline void shash_desc_ctx(struct shash_desc desc)
	330	{
	331	return desc->__ctx;
	332	}
	333
	334	int crypto_shash_setkey(struct crypto_shash tfm, const u8 key,
	335	unsigned int keylen);
	336	int crypto_shash_digest(struct shash_desc desc, const u8 data,
	337	unsigned int len, u8 *out);
	338
99d27e1c	339	static inline int crypto_shash_export(struct shash_desc desc, void out)
dec8b786	340	{
99d27e1c	341	return crypto_shash_alg(desc->tfm)->export(desc, out);
dec8b786 HX	342	}
dec8b786 HX	343
99d27e1c HX	344	static inline int crypto_shash_import(struct shash_desc desc, const void in)
	345	{
	346	return crypto_shash_alg(desc->tfm)->import(desc, in);
	347	}
dec8b786	348
7b5a080b HX	349	static inline int crypto_shash_init(struct shash_desc *desc)
	350	{
	351	return crypto_shash_alg(desc->tfm)->init(desc);
	352	}
	353
	354	int crypto_shash_update(struct shash_desc desc, const u8 data,
	355	unsigned int len);
	356	int crypto_shash_final(struct shash_desc desc, u8 out);
	357	int crypto_shash_finup(struct shash_desc desc, const u8 data,
	358	unsigned int len, u8 *out);
	359
18e33e6d	360	#endif /* _CRYPTO_HASH_H */