[deliverable/linux.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 crypto_tfm base;
};

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

static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name,
						      u32 type, u32 mask)
{
	type &= ~CRYPTO_ALG_TYPE_MASK;
	mask &= ~CRYPTO_ALG_TYPE_MASK;
	type |= CRYPTO_ALG_TYPE_AHASH;
	mask |= CRYPTO_ALG_TYPE_AHASH_MASK;

	return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, 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_free_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 ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm)
{
	return &crypto_ahash_tfm(tfm)->crt_ahash;
}

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

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 crypto_ahash_crt(tfm)->reqsize;
}

static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
				      const u8 *key, unsigned int keylen)
{
	struct ahash_tfm *crt = crypto_ahash_crt(tfm);

	return crt->setkey(tfm, key, keylen);
}

static inline int crypto_ahash_digest(struct ahash_request *req)
{
	struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
	return crt->digest(req);
}

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

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

static inline int crypto_ahash_final(struct ahash_request *req)
{
	struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
	return crt->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)
{
	kfree(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;
}

#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
	18	struct crypto_ahash {
	19	struct crypto_tfm base;
	20	};
	21
	22	static inline struct crypto_ahash __crypto_ahash_cast(struct crypto_tfm tfm)
	23	{
	24	return (struct crypto_ahash *)tfm;
	25	}
	26
	27	static inline struct crypto_ahash crypto_alloc_ahash(const char alg_name,
	28	u32 type, u32 mask)
	29	{
	30	type &= ~CRYPTO_ALG_TYPE_MASK;
	31	mask &= ~CRYPTO_ALG_TYPE_MASK;
	32	type \|= CRYPTO_ALG_TYPE_AHASH;
	33	mask \|= CRYPTO_ALG_TYPE_AHASH_MASK;
	34
	35	return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask));
	36	}
	37
	38	static inline struct crypto_tfm crypto_ahash_tfm(struct crypto_ahash tfm)
	39	{
	40	return &tfm->base;
	41	}
	42
	43	static inline void crypto_free_ahash(struct crypto_ahash *tfm)
	44	{
	45	crypto_free_tfm(crypto_ahash_tfm(tfm));
	46	}
	47
	48	static inline unsigned int crypto_ahash_alignmask(
	49	struct crypto_ahash *tfm)
	50	{
	51	return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
	52	}
	53
	54	static inline struct ahash_tfm crypto_ahash_crt(struct crypto_ahash tfm)
	55	{
	56	return &crypto_ahash_tfm(tfm)->crt_ahash;
	57	}
	58
	59	static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
	60	{
	61	return crypto_ahash_crt(tfm)->digestsize;
	62	}
	63
	64	static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
65	{
66	return crypto_tfm_get_flags(crypto_ahash_tfm(tfm));
67	}
68
69	static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags)
70	{
71	crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags);
72	}
73
74	static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags)
75	{
76	crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags);
77	}
78
79	static inline struct crypto_ahash *crypto_ahash_reqtfm(
80	struct ahash_request *req)
81	{
82	return __crypto_ahash_cast(req->base.tfm);
83	}
84
85	static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
86	{
87	return crypto_ahash_crt(tfm)->reqsize;
88	}
89
90	static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
91	const u8 *key, unsigned int keylen)
92	{
93	struct ahash_tfm *crt = crypto_ahash_crt(tfm);
94
95	return crt->setkey(tfm, key, keylen);
96	}
97
98	static inline int crypto_ahash_digest(struct ahash_request *req)
99	{
100	struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
101	return crt->digest(req);
102	}
103
318e5313 HX	104	static inline int crypto_ahash_init(struct ahash_request *req)
	105	{
	106	struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
	107	return crt->init(req);
	108	}
	109
	110	static inline int crypto_ahash_update(struct ahash_request *req)
	111	{
	112	struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
	113	return crt->update(req);
	114	}
	115
	116	static inline int crypto_ahash_final(struct ahash_request *req)
	117	{
	118	struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
	119	return crt->final(req);
	120	}
	121
18e33e6d HX	122	static inline void ahash_request_set_tfm(struct ahash_request *req,
	123	struct crypto_ahash *tfm)
	124	{
	125	req->base.tfm = crypto_ahash_tfm(tfm);
	126	}
	127
	128	static inline struct ahash_request *ahash_request_alloc(
	129	struct crypto_ahash *tfm, gfp_t gfp)
	130	{
	131	struct ahash_request *req;
	132
	133	req = kmalloc(sizeof(struct ahash_request) +
	134	crypto_ahash_reqsize(tfm), gfp);
	135
	136	if (likely(req))
	137	ahash_request_set_tfm(req, tfm);
	138
	139	return req;
	140	}
	141
	142	static inline void ahash_request_free(struct ahash_request *req)
	143	{
	144	kfree(req);
	145	}
	146
	147	static inline struct ahash_request *ahash_request_cast(
	148	struct crypto_async_request *req)
	149	{
	150	return container_of(req, struct ahash_request, base);
	151	}
	152
	153	static inline void ahash_request_set_callback(struct ahash_request *req,
	154	u32 flags,
	155	crypto_completion_t complete,
	156	void *data)
	157	{
	158	req->base.complete = complete;
	159	req->base.data = data;
	160	req->base.flags = flags;
	161	}
	162
	163	static inline void ahash_request_set_crypt(struct ahash_request *req,
	164	struct scatterlist src, u8 result,
	165	unsigned int nbytes)
	166	{
	167	req->src = src;
	168	req->nbytes = nbytes;
	169	req->result = result;
	170	}
	171
	172	#endif /* _CRYPTO_HASH_H */