diff options
Diffstat (limited to 'crypto/eseqiv.c')
| -rw-r--r-- | crypto/eseqiv.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/crypto/eseqiv.c b/crypto/eseqiv.c index 881d30910434..2a342c8e52b3 100644 --- a/crypto/eseqiv.c +++ b/crypto/eseqiv.c @@ -16,13 +16,13 @@ */ #include <crypto/internal/skcipher.h> +#include <crypto/rng.h> #include <crypto/scatterwalk.h> #include <linux/err.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/module.h> -#include <linux/random.h> #include <linux/scatterlist.h> #include <linux/spinlock.h> #include <linux/string.h> @@ -163,17 +163,22 @@ static int eseqiv_givencrypt_first(struct skcipher_givcrypt_request *req) { struct crypto_ablkcipher *geniv = skcipher_givcrypt_reqtfm(req); struct eseqiv_ctx *ctx = crypto_ablkcipher_ctx(geniv); + int err = 0; spin_lock_bh(&ctx->lock); if (crypto_ablkcipher_crt(geniv)->givencrypt != eseqiv_givencrypt_first) goto unlock; crypto_ablkcipher_crt(geniv)->givencrypt = eseqiv_givencrypt; - get_random_bytes(ctx->salt, crypto_ablkcipher_ivsize(geniv)); + err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt, + crypto_ablkcipher_ivsize(geniv)); unlock: spin_unlock_bh(&ctx->lock); + if (err) + return err; + return eseqiv_givencrypt(req); } @@ -216,9 +221,13 @@ 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 out; + goto put_rng; err = -EINVAL; if (inst->alg.cra_ablkcipher.ivsize != inst->alg.cra_blocksize) @@ -238,22 +247,36 @@ 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 = skcipher_geniv_free, + .free = eseqiv_free, .module = THIS_MODULE, }; -int __init eseqiv_module_init(void) +static int __init eseqiv_module_init(void) { return crypto_register_template(&eseqiv_tmpl); } -void __exit eseqiv_module_exit(void) +static void __exit eseqiv_module_exit(void) { crypto_unregister_template(&eseqiv_tmpl); } + +module_init(eseqiv_module_init); +module_exit(eseqiv_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Encrypted Sequence Number IV Generator"); |