[net-next-2.6.git] / include / crypto / aead.h

/*
 * AEAD: Authenticated Encryption with Associated Data
 * 
 * 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_AEAD_H
#define _CRYPTO_AEAD_H

#include <linux/crypto.h>
#include <linux/kernel.h>
#include <linux/slab.h>

/**
 *	struct aead_givcrypt_request - AEAD request with IV generation
 *	@seq: Sequence number for IV generation
 *	@giv: Space for generated IV
 *	@areq: The AEAD request itself
 */
struct aead_givcrypt_request {
	u64 seq;
	u8 *giv;

	struct aead_request areq;
};

static inline struct crypto_aead *aead_givcrypt_reqtfm(
	struct aead_givcrypt_request *req)
{
	return crypto_aead_reqtfm(&req->areq);
}

static inline int crypto_aead_givencrypt(struct aead_givcrypt_request *req)
{
	struct aead_tfm *crt = crypto_aead_crt(aead_givcrypt_reqtfm(req));
	return crt->givencrypt(req);
};

static inline int crypto_aead_givdecrypt(struct aead_givcrypt_request *req)
{
	struct aead_tfm *crt = crypto_aead_crt(aead_givcrypt_reqtfm(req));
	return crt->givdecrypt(req);
};

static inline void aead_givcrypt_set_tfm(struct aead_givcrypt_request *req,
					 struct crypto_aead *tfm)
{
	req->areq.base.tfm = crypto_aead_tfm(tfm);
}

static inline struct aead_givcrypt_request *aead_givcrypt_alloc(
	struct crypto_aead *tfm, gfp_t gfp)
{
	struct aead_givcrypt_request *req;

	req = kmalloc(sizeof(struct aead_givcrypt_request) +
		      crypto_aead_reqsize(tfm), gfp);

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

	return req;
}

static inline void aead_givcrypt_free(struct aead_givcrypt_request *req)
{
	kfree(req);
}

static inline void aead_givcrypt_set_callback(
	struct aead_givcrypt_request *req, u32 flags,
	crypto_completion_t complete, void *data)
{
	aead_request_set_callback(&req->areq, flags, complete, data);
}

static inline void aead_givcrypt_set_crypt(struct aead_givcrypt_request *req,
					   struct scatterlist *src,
					   struct scatterlist *dst,
					   unsigned int nbytes, void *iv)
{
	aead_request_set_crypt(&req->areq, src, dst, nbytes, iv);
}

static inline void aead_givcrypt_set_assoc(struct aead_givcrypt_request *req,
					   struct scatterlist *assoc,
					   unsigned int assoclen)
{
	aead_request_set_assoc(&req->areq, assoc, assoclen);
}

static inline void aead_givcrypt_set_giv(struct aead_givcrypt_request *req,
					 u8 *giv, u64 seq)
{
	req->giv = giv;
	req->seq = seq;
}

#endif	/* _CRYPTO_AEAD_H */
Commit	Line	Data
743edf57 HX	1	/*
	2	* AEAD: Authenticated Encryption with Associated Data
	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_AEAD_H
	14	#define _CRYPTO_AEAD_H
	15
	16	#include <linux/crypto.h>
	17	#include <linux/kernel.h>
3a282bd2	18	#include <linux/slab.h>
743edf57 HX	19
	20	/**
	21	* struct aead_givcrypt_request - AEAD request with IV generation
	22	* @seq: Sequence number for IV generation
	23	* @giv: Space for generated IV
	24	* @areq: The AEAD request itself
	25	*/
	26	struct aead_givcrypt_request {
	27	u64 seq;
	28	u8 *giv;
	29
	30	struct aead_request areq;
	31	};
	32
	33	static inline struct crypto_aead *aead_givcrypt_reqtfm(
	34	struct aead_givcrypt_request *req)
	35	{
	36	return crypto_aead_reqtfm(&req->areq);
	37	}
	38
3a282bd2 HX	39	static inline int crypto_aead_givencrypt(struct aead_givcrypt_request *req)
	40	{
	41	struct aead_tfm *crt = crypto_aead_crt(aead_givcrypt_reqtfm(req));
	42	return crt->givencrypt(req);
	43	};
	44
	45	static inline int crypto_aead_givdecrypt(struct aead_givcrypt_request *req)
	46	{
	47	struct aead_tfm *crt = crypto_aead_crt(aead_givcrypt_reqtfm(req));
	48	return crt->givdecrypt(req);
	49	};
	50
	51	static inline void aead_givcrypt_set_tfm(struct aead_givcrypt_request *req,
	52	struct crypto_aead *tfm)
	53	{
	54	req->areq.base.tfm = crypto_aead_tfm(tfm);
	55	}
	56
	57	static inline struct aead_givcrypt_request *aead_givcrypt_alloc(
	58	struct crypto_aead *tfm, gfp_t gfp)
	59	{
	60	struct aead_givcrypt_request *req;
	61
	62	req = kmalloc(sizeof(struct aead_givcrypt_request) +
	63	crypto_aead_reqsize(tfm), gfp);
	64
	65	if (likely(req))
	66	aead_givcrypt_set_tfm(req, tfm);
	67
	68	return req;
	69	}
	70
	71	static inline void aead_givcrypt_free(struct aead_givcrypt_request *req)
	72	{
	73	kfree(req);
	74	}
	75
	76	static inline void aead_givcrypt_set_callback(
	77	struct aead_givcrypt_request *req, u32 flags,
	78	crypto_completion_t complete, void *data)
	79	{
	80	aead_request_set_callback(&req->areq, flags, complete, data);
	81	}
	82
	83	static inline void aead_givcrypt_set_crypt(struct aead_givcrypt_request *req,
	84	struct scatterlist *src,
	85	struct scatterlist *dst,
	86	unsigned int nbytes, void *iv)
	87	{
	88	aead_request_set_crypt(&req->areq, src, dst, nbytes, iv);
	89	}
	90
	91	static inline void aead_givcrypt_set_assoc(struct aead_givcrypt_request *req,
	92	struct scatterlist *assoc,
	93	unsigned int assoclen)
	94	{
	95	aead_request_set_assoc(&req->areq, assoc, assoclen);
	96	}
	97
	98	static inline void aead_givcrypt_set_giv(struct aead_givcrypt_request *req,
	99	u8 *giv, u64 seq)
	100	{
	101	req->giv = giv;
	102	req->seq = seq;
103	}
104
743edf57	105	#endif /* _CRYPTO_AEAD_H */