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[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: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2007-12-08 20:13:15 +08:00
parent e56dd56418
commit 3a282bd2e7
1 changed files with 67 additions and 0 deletions
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67
include/crypto/aead.h
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@ -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 */