From 5b6d2d7fdf806f2b5a9352416f9e670911fc4748 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Wed, 12 Dec 2007 19:23:36 +0800 Subject: [CRYPTO] aead: Add aead_geniv_alloc/aead_geniv_free This patch creates the infrastructure to help the construction of IV generator templates that wrap around AEAD algorithms by adding an IV generator to them. This is useful for AEAD algorithms with no built-in IV generator or to replace their built-in generator. Signed-off-by: Herbert Xu --- include/linux/crypto.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux/crypto.h') diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 7524928bff9..639385a9672 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -206,6 +206,8 @@ struct aead_alg { int (*givencrypt)(struct aead_givcrypt_request *req); int (*givdecrypt)(struct aead_givcrypt_request *req); + const char *geniv; + unsigned int ivsize; unsigned int maxauthsize; }; @@ -353,6 +355,9 @@ struct aead_tfm { int (*decrypt)(struct aead_request *req); int (*givencrypt)(struct aead_givcrypt_request *req); int (*givdecrypt)(struct aead_givcrypt_request *req); + + struct crypto_aead *base; + unsigned int ivsize; unsigned int authsize; unsigned int reqsize; @@ -781,7 +786,9 @@ static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags) static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen) { - return crypto_aead_crt(tfm)->setkey(tfm, key, keylen); + struct aead_tfm *crt = crypto_aead_crt(tfm); + + return crt->setkey(crt->base, key, keylen); } int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize); @@ -809,7 +816,7 @@ static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm) static inline void aead_request_set_tfm(struct aead_request *req, struct crypto_aead *tfm) { - req->base.tfm = crypto_aead_tfm(tfm); + req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base); } static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm, -- cgit v1.2.3-70-g09d2