diff options
| -rw-r--r-- | crypto/eseqiv.c | 31 |
1 files changed, 12 insertions, 19 deletions
diff --git a/crypto/eseqiv.c b/crypto/eseqiv.c index 78a72645390c..16dda72fc4f8 100644 --- a/crypto/eseqiv.c +++ b/crypto/eseqiv.c @@ -152,6 +152,7 @@ static int eseqiv_init(struct crypto_tfm *tfm) struct eseqiv_ctx *ctx = crypto_ablkcipher_ctx(geniv); unsigned long alignmask; unsigned int reqsize; + int err; spin_lock_init(&ctx->lock); @@ -175,9 +176,15 @@ static int eseqiv_init(struct crypto_tfm *tfm) tfm->crt_ablkcipher.reqsize = 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 = eseqiv_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 struct crypto_template eseqiv_tmpl; @@ -187,20 +194,14 @@ static struct crypto_instance *eseqiv_alloc(struct rtattr **tb) struct crypto_instance *inst; int err; - err = crypto_get_default_rng(); - if (err) - return ERR_PTR(err); - inst = skcipher_geniv_alloc(&eseqiv_tmpl, tb, 0, 0); if (IS_ERR(inst)) - goto put_rng; + goto out; err = -EINVAL; if (inst->alg.cra_ablkcipher.ivsize != inst->alg.cra_blocksize) goto free_inst; - inst->alg.cra_ablkcipher.givencrypt = eseqiv_givencrypt; - inst->alg.cra_init = eseqiv_init; inst->alg.cra_exit = skcipher_geniv_exit; @@ -213,21 +214,13 @@ out: free_inst: skcipher_geniv_free(inst); inst = ERR_PTR(err); -put_rng: - crypto_put_default_rng(); goto out; } -static void eseqiv_free(struct crypto_instance *inst) -{ - skcipher_geniv_free(inst); - crypto_put_default_rng(); -} - static struct crypto_template eseqiv_tmpl = { .name = "eseqiv", .alloc = eseqiv_alloc, - .free = eseqiv_free, + .free = skcipher_geniv_free, .module = THIS_MODULE, }; |