diff options
Diffstat (limited to 'include/crypto/aead.h')
| -rw-r--r-- | include/crypto/aead.h | 44 |
1 files changed, 42 insertions, 2 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; |