diff options
| -rw-r--r-- | crypto/seqiv.c | 71 |
1 files changed, 70 insertions, 1 deletions
diff --git a/crypto/seqiv.c b/crypto/seqiv.c index 27dbab8a80a9..a9bfbda4f36a 100644 --- a/crypto/seqiv.c +++ b/crypto/seqiv.c @@ -584,6 +584,7 @@ static void seqiv_aead_exit(struct crypto_tfm *tfm) } static struct crypto_template seqiv_tmpl; +static struct crypto_template seqniv_tmpl; static struct crypto_instance *seqiv_ablkcipher_alloc(struct rtattr **tb) { @@ -710,6 +711,51 @@ put_rng: goto out; } +static struct crypto_instance *seqniv_alloc(struct rtattr **tb) +{ + struct aead_instance *inst; + struct crypto_aead_spawn *spawn; + struct aead_alg *alg; + int err; + + err = crypto_get_default_rng(); + if (err) + return ERR_PTR(err); + + inst = aead_geniv_alloc(&seqniv_tmpl, tb, 0, 0); + + if (IS_ERR(inst)) + goto put_rng; + + if (inst->alg.ivsize < sizeof(u64)) { + aead_geniv_free(inst); + inst = ERR_PTR(-EINVAL); + goto put_rng; + } + + spawn = aead_instance_ctx(inst); + alg = crypto_spawn_aead_alg(spawn); + + inst->alg.setkey = seqiv_aead_setkey; + inst->alg.setauthsize = seqiv_aead_setauthsize; + inst->alg.encrypt = seqiv_aead_encrypt_compat_first; + inst->alg.decrypt = seqiv_aead_decrypt_compat; + + inst->alg.base.cra_init = seqiv_aead_compat_init; + inst->alg.base.cra_exit = seqiv_aead_compat_exit; + + inst->alg.base.cra_alignmask |= __alignof__(u32) - 1; + inst->alg.base.cra_ctxsize = sizeof(struct seqiv_aead_ctx); + inst->alg.base.cra_ctxsize += inst->alg.base.cra_aead.ivsize; + +out: + return aead_crypto_instance(inst); + +put_rng: + crypto_put_default_rng(); + goto out; +} + static void seqiv_free(struct crypto_instance *inst) { if ((inst->alg.cra_flags ^ CRYPTO_ALG_TYPE_AEAD) & CRYPTO_ALG_TYPE_MASK) @@ -726,9 +772,31 @@ static struct crypto_template seqiv_tmpl = { .module = THIS_MODULE, }; +static struct crypto_template seqniv_tmpl = { + .name = "seqniv", + .alloc = seqniv_alloc, + .free = seqiv_free, + .module = THIS_MODULE, +}; + static int __init seqiv_module_init(void) { - return crypto_register_template(&seqiv_tmpl); + int err; + + err = crypto_register_template(&seqiv_tmpl); + if (err) + goto out; + + err = crypto_register_template(&seqniv_tmpl); + if (err) + goto out_undo_niv; + +out: + return err; + +out_undo_niv: + crypto_unregister_template(&seqiv_tmpl); + goto out; } static void __exit seqiv_module_exit(void) @@ -742,3 +810,4 @@ module_exit(seqiv_module_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Sequence Number IV Generator"); MODULE_ALIAS_CRYPTO("seqiv"); +MODULE_ALIAS_CRYPTO("seqniv"); |