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Commit 3a282bd2 authored by Herbert Xu's avatar Herbert Xu
Browse files

[CRYPTO] aead: Add top-level givencrypt/givdecrypt calls 



This patch finally makes the givencrypt/givdecrypt operations available
to users by adding crypto_aead_givencrypt and crypto_aead_givdecrypt.
A suite of helpers to allocate and fill in the request is also available.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent e56dd564

include/crypto/aead.h

+67 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 


#include <linux/crypto.h>

#include <linux/kernel.h>

#include <linux/slab.h>



/**

 *	struct aead_givcrypt_request - AEAD request with IV generation
@@ -35,4 +36,70 @@ static inline struct crypto_aead *aead_givcrypt_reqtfm( 
	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 */