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authorHerbert Xu <herbert@gondor.apana.org.au>2023-10-03 11:43:25 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2023-10-13 18:27:26 +0800
commit60fa9a39aeddff38704faa82c7c44a29123887e3 (patch)
tree73e3eced25fea6650082e6cd3aedceb42bf9ee80 /crypto
parent24a285cea82961824d9709025dea69dbc84e01a0 (diff)
crypto: ccm - Only access common skcipher fields on spawn
As skcipher spawns may be of the type lskcipher, only the common fields may be accessed. This was already the case but use the correct helpers to make this more obvious. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/ccm.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/crypto/ccm.c b/crypto/ccm.c
index a9453129c51c..7af89a5b745c 100644
--- a/crypto/ccm.c
+++ b/crypto/ccm.c
@@ -447,10 +447,10 @@ static int crypto_ccm_create_common(struct crypto_template *tmpl,
const char *ctr_name,
const char *mac_name)
{
+ struct skcipher_alg_common *ctr;
u32 mask;
struct aead_instance *inst;
struct ccm_instance_ctx *ictx;
- struct skcipher_alg *ctr;
struct hash_alg_common *mac;
int err;
@@ -478,13 +478,12 @@ static int crypto_ccm_create_common(struct crypto_template *tmpl,
ctr_name, 0, mask);
if (err)
goto err_free_inst;
- ctr = crypto_spawn_skcipher_alg(&ictx->ctr);
+ ctr = crypto_spawn_skcipher_alg_common(&ictx->ctr);
/* The skcipher algorithm must be CTR mode, using 16-byte blocks. */
err = -EINVAL;
if (strncmp(ctr->base.cra_name, "ctr(", 4) != 0 ||
- crypto_skcipher_alg_ivsize(ctr) != 16 ||
- ctr->base.cra_blocksize != 1)
+ ctr->ivsize != 16 || ctr->base.cra_blocksize != 1)
goto err_free_inst;
/* ctr and cbcmac must use the same underlying block cipher. */
@@ -507,7 +506,7 @@ static int crypto_ccm_create_common(struct crypto_template *tmpl,
inst->alg.base.cra_alignmask = mac->base.cra_alignmask |
ctr->base.cra_alignmask;
inst->alg.ivsize = 16;
- inst->alg.chunksize = crypto_skcipher_alg_chunksize(ctr);
+ inst->alg.chunksize = ctr->chunksize;
inst->alg.maxauthsize = 16;
inst->alg.base.cra_ctxsize = sizeof(struct crypto_ccm_ctx);
inst->alg.init = crypto_ccm_init_tfm;