[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;

	/* 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;
};

#define SHASH_DESC_ON_STACK(shash, ctx)				  \
	char __##shash##_desc[sizeof(struct shash_desc) +	  \
		crypto_shash_descsize(ctx)] CRYPTO_MINALIGN_ATTR; \
	struct shash_desc *shash = (struct shash_desc *)__##shash##_desc

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 compl,
					      void *data)
{
	req->base.complete = compl;
	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
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
a0a77af1 BW	61	#define SHASH_DESC_ON_STACK(shash, ctx) \
	62	char __##shash##_desc[sizeof(struct shash_desc) + \
	63	crypto_shash_descsize(ctx)] CRYPTO_MINALIGN_ATTR; \
	64	struct shash_desc shash = (struct shash_desc )__##shash##_desc
	65
7b5a080b HX	66	struct shash_alg {
	67	int (init)(struct shash_desc desc);
	68	int (update)(struct shash_desc desc, const u8 *data,
	69	unsigned int len);
	70	int (final)(struct shash_desc desc, u8 *out);
	71	int (finup)(struct shash_desc desc, const u8 *data,
	72	unsigned int len, u8 *out);
	73	int (digest)(struct shash_desc desc, const u8 *data,
	74	unsigned int len, u8 *out);
99d27e1c HX	75	int (export)(struct shash_desc desc, void *out);
99d27e1c HX	76	int (import)(struct shash_desc desc, const void *in);
7b5a080b HX	77	int (setkey)(struct crypto_shash tfm, const u8 *key,
	78	unsigned int keylen);
	79
	80	unsigned int descsize;
88056ec3 HX	81
88056ec3 HX	82	/* These fields must match hash_alg_common. */
fa649664 HX	83	unsigned int digestsize
fa649664 HX	84	__attribute__ ((aligned(__alignof__(struct hash_alg_common))));
99d27e1c	85	unsigned int statesize;
7b5a080b HX	86
	87	struct crypto_alg base;
	88	};
	89
18e33e6d	90	struct crypto_ahash {
88056ec3 HX	91	int (init)(struct ahash_request req);
	92	int (update)(struct ahash_request req);
	93	int (final)(struct ahash_request req);
	94	int (finup)(struct ahash_request req);
	95	int (digest)(struct ahash_request req);
	96	int (export)(struct ahash_request req, void *out);
	97	int (import)(struct ahash_request req, const void *in);
	98	int (setkey)(struct crypto_ahash tfm, const u8 *key,
	99	unsigned int keylen);
	100
88056ec3	101	unsigned int reqsize;
18e33e6d HX	102	struct crypto_tfm base;
	103	};
	104
7b5a080b	105	struct crypto_shash {
113adefc	106	unsigned int descsize;
7b5a080b HX	107	struct crypto_tfm base;
	108	};
	109
18e33e6d HX	110	static inline struct crypto_ahash __crypto_ahash_cast(struct crypto_tfm tfm)
18e33e6d HX	111	{
88056ec3	112	return container_of(tfm, struct crypto_ahash, base);
18e33e6d HX	113	}
18e33e6d HX	114
88056ec3 HX	115	struct crypto_ahash crypto_alloc_ahash(const char alg_name, u32 type,
88056ec3 HX	116	u32 mask);
18e33e6d HX	117
	118	static inline struct crypto_tfm crypto_ahash_tfm(struct crypto_ahash tfm)
	119	{
	120	return &tfm->base;
	121	}
	122
	123	static inline void crypto_free_ahash(struct crypto_ahash *tfm)
	124	{
88056ec3	125	crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm));
18e33e6d HX	126	}
	127
	128	static inline unsigned int crypto_ahash_alignmask(
	129	struct crypto_ahash *tfm)
	130	{
	131	return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
	132	}
	133
88056ec3 HX	134	static inline struct hash_alg_common *__crypto_hash_alg_common(
	135	struct crypto_alg *alg)
	136	{
	137	return container_of(alg, struct hash_alg_common, base);
	138	}
	139
	140	static inline struct hash_alg_common *crypto_hash_alg_common(
	141	struct crypto_ahash *tfm)
18e33e6d	142	{
88056ec3	143	return __crypto_hash_alg_common(crypto_ahash_tfm(tfm)->__crt_alg);
18e33e6d HX	144	}
	145
	146	static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
	147	{
500b3e3c	148	return crypto_hash_alg_common(tfm)->digestsize;
88056ec3 HX	149	}
	150
	151	static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm)
	152	{
	153	return crypto_hash_alg_common(tfm)->statesize;
18e33e6d HX	154	}
	155
	156	static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
	157	{
	158	return crypto_tfm_get_flags(crypto_ahash_tfm(tfm));
	159	}
	160
	161	static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags)
	162	{
	163	crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags);
	164	}
	165
	166	static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags)
	167	{
	168	crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags);
	169	}
	170
	171	static inline struct crypto_ahash *crypto_ahash_reqtfm(
	172	struct ahash_request *req)
	173	{
	174	return __crypto_ahash_cast(req->base.tfm);
	175	}
	176
	177	static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
	178	{
88056ec3	179	return tfm->reqsize;
18e33e6d HX	180	}
18e33e6d HX	181
dec8b786 HX	182	static inline void ahash_request_ctx(struct ahash_request req)
	183	{
	184	return req->__ctx;
	185	}
	186
66f6ce5e HX	187	int crypto_ahash_setkey(struct crypto_ahash tfm, const u8 key,
	188	unsigned int keylen);
	189	int crypto_ahash_finup(struct ahash_request *req);
	190	int crypto_ahash_final(struct ahash_request *req);
	191	int crypto_ahash_digest(struct ahash_request *req);
18e33e6d	192
88056ec3	193	static inline int crypto_ahash_export(struct ahash_request req, void out)
dec8b786	194	{
88056ec3	195	return crypto_ahash_reqtfm(req)->export(req, out);
dec8b786 HX	196	}
dec8b786 HX	197
88056ec3 HX	198	static inline int crypto_ahash_import(struct ahash_request req, const void in)
	199	{
	200	return crypto_ahash_reqtfm(req)->import(req, in);
	201	}
dec8b786	202
318e5313 HX	203	static inline int crypto_ahash_init(struct ahash_request *req)
318e5313 HX	204	{
88056ec3	205	return crypto_ahash_reqtfm(req)->init(req);
318e5313 HX	206	}
	207
	208	static inline int crypto_ahash_update(struct ahash_request *req)
	209	{
88056ec3	210	return crypto_ahash_reqtfm(req)->update(req);
318e5313 HX	211	}
318e5313 HX	212
18e33e6d HX	213	static inline void ahash_request_set_tfm(struct ahash_request *req,
	214	struct crypto_ahash *tfm)
	215	{
	216	req->base.tfm = crypto_ahash_tfm(tfm);
	217	}
	218
	219	static inline struct ahash_request *ahash_request_alloc(
	220	struct crypto_ahash *tfm, gfp_t gfp)
	221	{
	222	struct ahash_request *req;
	223
	224	req = kmalloc(sizeof(struct ahash_request) +
	225	crypto_ahash_reqsize(tfm), gfp);
	226
	227	if (likely(req))
	228	ahash_request_set_tfm(req, tfm);
	229
	230	return req;
	231	}
	232
	233	static inline void ahash_request_free(struct ahash_request *req)
	234	{
aef73cfc	235	kzfree(req);
18e33e6d HX	236	}
	237
	238	static inline struct ahash_request *ahash_request_cast(
	239	struct crypto_async_request *req)
	240	{
	241	return container_of(req, struct ahash_request, base);
	242	}
	243
	244	static inline void ahash_request_set_callback(struct ahash_request *req,
	245	u32 flags,
3e3dc25f	246	crypto_completion_t compl,
18e33e6d HX	247	void *data)
18e33e6d HX	248	{
3e3dc25f	249	req->base.complete = compl;
18e33e6d HX	250	req->base.data = data;
	251	req->base.flags = flags;
	252	}
	253
	254	static inline void ahash_request_set_crypt(struct ahash_request *req,
	255	struct scatterlist src, u8 result,
	256	unsigned int nbytes)
	257	{
	258	req->src = src;
	259	req->nbytes = nbytes;
	260	req->result = result;
	261	}
	262
7b5a080b HX	263	struct crypto_shash crypto_alloc_shash(const char alg_name, u32 type,
	264	u32 mask);
	265
	266	static inline struct crypto_tfm crypto_shash_tfm(struct crypto_shash tfm)
	267	{
	268	return &tfm->base;
	269	}
	270
	271	static inline void crypto_free_shash(struct crypto_shash *tfm)
	272	{
412e87ae	273	crypto_destroy_tfm(tfm, crypto_shash_tfm(tfm));
7b5a080b HX	274	}
	275
	276	static inline unsigned int crypto_shash_alignmask(
	277	struct crypto_shash *tfm)
	278	{
	279	return crypto_tfm_alg_alignmask(crypto_shash_tfm(tfm));
	280	}
	281
97495986 HX	282	static inline unsigned int crypto_shash_blocksize(struct crypto_shash *tfm)
	283	{
	284	return crypto_tfm_alg_blocksize(crypto_shash_tfm(tfm));
	285	}
	286
7b5a080b HX	287	static inline struct shash_alg __crypto_shash_alg(struct crypto_alg alg)
	288	{
	289	return container_of(alg, struct shash_alg, base);
	290	}
	291
	292	static inline struct shash_alg crypto_shash_alg(struct crypto_shash tfm)
	293	{
	294	return __crypto_shash_alg(crypto_shash_tfm(tfm)->__crt_alg);
	295	}
	296
	297	static inline unsigned int crypto_shash_digestsize(struct crypto_shash *tfm)
	298	{
	299	return crypto_shash_alg(tfm)->digestsize;
	300	}
	301
99d27e1c HX	302	static inline unsigned int crypto_shash_statesize(struct crypto_shash *tfm)
	303	{
	304	return crypto_shash_alg(tfm)->statesize;
	305	}
	306
7b5a080b HX	307	static inline u32 crypto_shash_get_flags(struct crypto_shash *tfm)
	308	{
	309	return crypto_tfm_get_flags(crypto_shash_tfm(tfm));
	310	}
	311
	312	static inline void crypto_shash_set_flags(struct crypto_shash *tfm, u32 flags)
	313	{
	314	crypto_tfm_set_flags(crypto_shash_tfm(tfm), flags);
	315	}
	316
	317	static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags)
	318	{
	319	crypto_tfm_clear_flags(crypto_shash_tfm(tfm), flags);
	320	}
	321
	322	static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm)
	323	{
113adefc	324	return tfm->descsize;
7b5a080b HX	325	}
	326
	327	static inline void shash_desc_ctx(struct shash_desc desc)
	328	{
	329	return desc->__ctx;
	330	}
	331
	332	int crypto_shash_setkey(struct crypto_shash tfm, const u8 key,
	333	unsigned int keylen);
	334	int crypto_shash_digest(struct shash_desc desc, const u8 data,
	335	unsigned int len, u8 *out);
	336
99d27e1c	337	static inline int crypto_shash_export(struct shash_desc desc, void out)
dec8b786	338	{
99d27e1c	339	return crypto_shash_alg(desc->tfm)->export(desc, out);
dec8b786 HX	340	}
dec8b786 HX	341
99d27e1c HX	342	static inline int crypto_shash_import(struct shash_desc desc, const void in)
	343	{
	344	return crypto_shash_alg(desc->tfm)->import(desc, in);
	345	}
dec8b786	346
7b5a080b HX	347	static inline int crypto_shash_init(struct shash_desc *desc)
	348	{
	349	return crypto_shash_alg(desc->tfm)->init(desc);
	350	}
	351
	352	int crypto_shash_update(struct shash_desc desc, const u8 data,
	353	unsigned int len);
	354	int crypto_shash_final(struct shash_desc desc, u8 out);
	355	int crypto_shash_finup(struct shash_desc desc, const u8 data,
	356	unsigned int len, u8 *out);
	357
18e33e6d	358	#endif /* _CRYPTO_HASH_H */