diff options
| -rw-r--r-- | crypto/aead.c | 14 | ||||
| -rw-r--r-- | include/crypto/aead.h | 13 |
2 files changed, 27 insertions, 0 deletions
diff --git a/crypto/aead.c b/crypto/aead.c index 8cdea89909cd..4bab3cff3578 100644 --- a/crypto/aead.c +++ b/crypto/aead.c @@ -174,6 +174,14 @@ static int crypto_old_aead_init_tfm(struct crypto_tfm *tfm) return 0; } +static void crypto_aead_exit_tfm(struct crypto_tfm *tfm) +{ + struct crypto_aead *aead = __crypto_aead_cast(tfm); + struct aead_alg *alg = crypto_aead_alg(aead); + + alg->exit(aead); +} + static int crypto_aead_init_tfm(struct crypto_tfm *tfm) { struct crypto_aead *aead = __crypto_aead_cast(tfm); @@ -189,6 +197,12 @@ static int crypto_aead_init_tfm(struct crypto_tfm *tfm) aead->child = __crypto_aead_cast(tfm); aead->authsize = alg->maxauthsize; + if (alg->exit) + aead->base.exit = crypto_aead_exit_tfm; + + if (alg->init) + return alg->init(aead); + return 0; } diff --git a/include/crypto/aead.h b/include/crypto/aead.h index 1a273bc5656c..5cb0066be30b 100644 --- a/include/crypto/aead.h +++ b/include/crypto/aead.h @@ -109,6 +109,17 @@ struct aead_givcrypt_request { * @decrypt: see struct ablkcipher_alg * @geniv: see struct ablkcipher_alg * @ivsize: see struct ablkcipher_alg + * @init: Initialize the cryptographic transformation object. This function + * is used to initialize the cryptographic transformation object. + * This function is called only once at the instantiation time, right + * after the transformation context was allocated. In case the + * cryptographic hardware has some special requirements which need to + * be handled by software, this function shall check for the precise + * requirement of the transformation and put any software fallbacks + * in place. + * @exit: Deinitialize the cryptographic transformation object. This is a + * counterpart to @init, used to remove various changes set in + * @init. * * All fields except @ivsize is mandatory and must be filled. */ @@ -118,6 +129,8 @@ struct aead_alg { int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize); int (*encrypt)(struct aead_request *req); int (*decrypt)(struct aead_request *req); + int (*init)(struct crypto_aead *tfm); + void (*exit)(struct crypto_aead *tfm); const char *geniv; |