diff options
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/aead.h | 44 | ||||
| -rw-r--r-- | include/crypto/internal/aead.h | 36 |
2 files changed, 76 insertions, 4 deletions
diff --git a/include/crypto/aead.h b/include/crypto/aead.h index aebf57dfb903..177e6f46e2bb 100644 --- a/include/crypto/aead.h +++ b/include/crypto/aead.h @@ -17,8 +17,6 @@ #include <linux/kernel.h> #include <linux/slab.h> -#define aead_alg old_aead_alg - /** * DOC: Authenticated Encryption With Associated Data (AEAD) Cipher API * @@ -92,7 +90,48 @@ struct aead_givcrypt_request { struct aead_request areq; }; +/** + * struct aead_alg - AEAD cipher definition + * @maxauthsize: Set the maximum authentication tag size supported by the + * transformation. A transformation may support smaller tag sizes. + * As the authentication tag is a message digest to ensure the + * integrity of the encrypted data, a consumer typically wants the + * largest authentication tag possible as defined by this + * variable. + * @setauthsize: Set authentication size for the AEAD transformation. This + * function is used to specify the consumer requested size of the + * authentication tag to be either generated by the transformation + * during encryption or the size of the authentication tag to be + * supplied during the decryption operation. This function is also + * responsible for checking the authentication tag size for + * validity. + * @setkey: see struct ablkcipher_alg + * @encrypt: see struct ablkcipher_alg + * @decrypt: see struct ablkcipher_alg + * @geniv: see struct ablkcipher_alg + * @ivsize: see struct ablkcipher_alg + * + * All fields except @ivsize is mandatory and must be filled. + */ +struct aead_alg { + int (*setkey)(struct crypto_aead *tfm, const u8 *key, + unsigned int keylen); + int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize); + int (*encrypt)(struct aead_request *req); + int (*decrypt)(struct aead_request *req); + + const char *geniv; + + unsigned int ivsize; + unsigned int maxauthsize; + + struct crypto_alg base; +}; + struct crypto_aead { + int (*setkey)(struct crypto_aead *tfm, const u8 *key, + unsigned int keylen); + int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize); int (*encrypt)(struct aead_request *req); int (*decrypt)(struct aead_request *req); int (*givencrypt)(struct aead_givcrypt_request *req); @@ -102,6 +141,7 @@ struct crypto_aead { unsigned int ivsize; unsigned int authsize; + unsigned int maxauthsize; unsigned int reqsize; struct crypto_tfm base; diff --git a/include/crypto/internal/aead.h b/include/crypto/internal/aead.h index 4614f795f8bc..6cd31519c4f6 100644 --- a/include/crypto/internal/aead.h +++ b/include/crypto/internal/aead.h @@ -19,6 +19,10 @@ struct rtattr; +struct aead_instance { + struct aead_alg alg; +}; + struct crypto_aead_spawn { struct crypto_spawn base; }; @@ -33,7 +37,8 @@ static inline struct old_aead_alg *crypto_old_aead_alg(struct crypto_aead *tfm) static inline struct aead_alg *crypto_aead_alg(struct crypto_aead *tfm) { - return &crypto_aead_tfm(tfm)->__crt_alg->cra_aead; + return container_of(crypto_aead_tfm(tfm)->__crt_alg, + struct aead_alg, base); } static inline void *crypto_aead_ctx(struct crypto_aead *tfm) @@ -47,6 +52,22 @@ static inline struct crypto_instance *crypto_aead_alg_instance( return crypto_tfm_alg_instance(&aead->base); } +static inline struct crypto_instance *aead_crypto_instance( + struct aead_instance *inst) +{ + return container_of(&inst->alg.base, struct crypto_instance, alg); +} + +static inline struct aead_instance *aead_instance(struct crypto_instance *inst) +{ + return container_of(&inst->alg, struct aead_instance, alg.base); +} + +static inline void *aead_instance_ctx(struct aead_instance *inst) +{ + return crypto_instance_ctx(aead_crypto_instance(inst)); +} + static inline void *aead_request_ctx(struct aead_request *req) { return req->__ctx; @@ -84,6 +105,12 @@ static inline struct crypto_alg *crypto_aead_spawn_alg( return spawn->base.alg; } +static inline struct aead_alg *crypto_spawn_aead_alg( + struct crypto_aead_spawn *spawn) +{ + return container_of(spawn->base.alg, struct aead_alg, base); +} + static inline struct crypto_aead *crypto_spawn_aead( struct crypto_aead_spawn *spawn) { @@ -121,8 +148,13 @@ static inline void crypto_aead_set_reqsize(struct crypto_aead *aead, static inline unsigned int crypto_aead_maxauthsize(struct crypto_aead *aead) { - return crypto_old_aead_alg(aead)->maxauthsize; + return aead->maxauthsize; } +int crypto_register_aead(struct aead_alg *alg); +int crypto_unregister_aead(struct aead_alg *alg); +int aead_register_instance(struct crypto_template *tmpl, + struct aead_instance *inst); + #endif /* _CRYPTO_INTERNAL_AEAD_H */ |