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-rw-r--r--crypto/seqiv.c50
1 files changed, 25 insertions, 25 deletions
diff --git a/crypto/seqiv.c b/crypto/seqiv.c
index 42e4ee532d35..122c56e3491b 100644
--- a/crypto/seqiv.c
+++ b/crypto/seqiv.c
@@ -478,29 +478,42 @@ static int seqiv_init(struct crypto_tfm *tfm)
{
struct crypto_ablkcipher *geniv = __crypto_ablkcipher_cast(tfm);
struct seqiv_ctx *ctx = crypto_ablkcipher_ctx(geniv);
+ int err;
spin_lock_init(&ctx->lock);
tfm->crt_ablkcipher.reqsize = sizeof(struct ablkcipher_request);
- return crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
- crypto_ablkcipher_ivsize(geniv)) ?:
- skcipher_geniv_init(tfm);
+ err = 0;
+ if (!crypto_get_default_rng()) {
+ crypto_ablkcipher_crt(geniv)->givencrypt = seqiv_givencrypt;
+ err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
+ crypto_ablkcipher_ivsize(geniv));
+ crypto_put_default_rng();
+ }
+
+ return err ?: skcipher_geniv_init(tfm);
}
static int seqiv_old_aead_init(struct crypto_tfm *tfm)
{
struct crypto_aead *geniv = __crypto_aead_cast(tfm);
struct seqiv_ctx *ctx = crypto_aead_ctx(geniv);
+ int err;
spin_lock_init(&ctx->lock);
crypto_aead_set_reqsize(__crypto_aead_cast(tfm),
sizeof(struct aead_request));
+ err = 0;
+ if (!crypto_get_default_rng()) {
+ geniv->givencrypt = seqiv_aead_givencrypt;
+ err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
+ crypto_aead_ivsize(geniv));
+ crypto_put_default_rng();
+ }
- return crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
- crypto_aead_ivsize(geniv)) ?:
- aead_geniv_init(tfm);
+ return err ?: aead_geniv_init(tfm);
}
static int seqiv_aead_init_common(struct crypto_tfm *tfm, unsigned int reqsize)
@@ -513,8 +526,13 @@ static int seqiv_aead_init_common(struct crypto_tfm *tfm, unsigned int reqsize)
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,
crypto_aead_ivsize(geniv));
+ crypto_put_default_rng();
if (err)
goto out;
@@ -571,8 +589,6 @@ static int seqiv_ablkcipher_create(struct crypto_template *tmpl,
if (inst->alg.cra_ablkcipher.ivsize < sizeof(u64))
goto free_inst;
- inst->alg.cra_ablkcipher.givencrypt = seqiv_givencrypt;
-
inst->alg.cra_init = seqiv_init;
inst->alg.cra_exit = skcipher_geniv_exit;
@@ -602,8 +618,6 @@ static int seqiv_old_aead_create(struct crypto_template *tmpl,
if (inst->alg.cra_aead.ivsize < sizeof(u64))
goto free_inst;
- inst->alg.cra_aead.givencrypt = seqiv_aead_givencrypt;
-
inst->alg.cra_init = seqiv_old_aead_init;
inst->alg.cra_exit = aead_geniv_exit;
@@ -680,18 +694,11 @@ static int seqiv_create(struct crypto_template *tmpl, struct rtattr **tb)
if (IS_ERR(algt))
return PTR_ERR(algt);
- err = crypto_get_default_rng();
- if (err)
- return err;
-
if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & CRYPTO_ALG_TYPE_MASK)
err = seqiv_ablkcipher_create(tmpl, tb);
else
err = seqiv_aead_create(tmpl, tb);
- if (err)
- crypto_put_default_rng();
-
return err;
}
@@ -702,14 +709,10 @@ static int seqniv_create(struct crypto_template *tmpl, struct rtattr **tb)
struct aead_alg *alg;
int err;
- err = crypto_get_default_rng();
- if (err)
- return err;
-
inst = aead_geniv_alloc(tmpl, tb, 0, 0);
err = PTR_ERR(inst);
if (IS_ERR(inst))
- goto put_rng;
+ goto out;
spawn = aead_instance_ctx(inst);
alg = crypto_spawn_aead_alg(spawn);
@@ -741,8 +744,6 @@ out:
free_inst:
aead_geniv_free(inst);
-put_rng:
- crypto_put_default_rng();
goto out;
}
@@ -752,7 +753,6 @@ static void seqiv_free(struct crypto_instance *inst)
skcipher_geniv_free(inst);
else
aead_geniv_free(aead_instance(inst));
- crypto_put_default_rng();
}
static struct crypto_template seqiv_tmpl = {