Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

crypto: echainiv - Only hold RNG during initialisation

Browse source 
This patch changes the RNG allocation so that we only hold a
reference to the RNG during initialisation.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2015-06-21 19:11:50 +08:00
parent eeee12aa34
commit 9fcc704dfd
1 changed files with 6 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
crypto/echainiv.c
View file

@ -197,8 +197,13 @@ static int echainiv_init(struct crypto_tfm *tfm)
crypto_aead_set_reqsize(geniv, sizeof(struct aead_request)); crypto_aead_set_reqsize(geniv, sizeof(struct aead_request));
err = crypto_get_default_rng();
if (err)
goto out;
err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt, err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
crypto_aead_ivsize(geniv)); crypto_aead_ivsize(geniv));
crypto_put_default_rng();
if (err) if (err)
goto out; goto out;
@ -277,35 +282,14 @@ static int echainiv_aead_create(struct crypto_template *tmpl,
goto out; goto out;
} }
static int echainiv_create(struct crypto_template *tmpl, struct rtattr **tb)
{
int err;
err = crypto_get_default_rng();
if (err)
goto out;
err = echainiv_aead_create(tmpl, tb);
if (err)
goto put_rng;
out:
return err;
put_rng:
crypto_put_default_rng();
goto out;
}
static void echainiv_free(struct crypto_instance *inst) static void echainiv_free(struct crypto_instance *inst)
{ {
aead_geniv_free(aead_instance(inst)); aead_geniv_free(aead_instance(inst));
crypto_put_default_rng();
} }
static struct crypto_template echainiv_tmpl = { static struct crypto_template echainiv_tmpl = {
.name = "echainiv", .name = "echainiv",
.create = echainiv_create, .create = echainiv_aead_create,
.free = echainiv_free, .free = echainiv_free,
.module = THIS_MODULE, .module = THIS_MODULE,
}; };