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path: root/drivers/net/phy/mscc/mscc_macsec.c
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Diffstat (limited to 'drivers/net/phy/mscc/mscc_macsec.c')
-rw-r--r--drivers/net/phy/mscc/mscc_macsec.c40
1 files changed, 9 insertions, 31 deletions
diff --git a/drivers/net/phy/mscc/mscc_macsec.c b/drivers/net/phy/mscc/mscc_macsec.c
index 77c8c2fb28de..1d4c012194e9 100644
--- a/drivers/net/phy/mscc/mscc_macsec.c
+++ b/drivers/net/phy/mscc/mscc_macsec.c
@@ -10,7 +10,7 @@
#include <linux/phy.h>
#include <dt-bindings/net/mscc-phy-vsc8531.h>
-#include <crypto/skcipher.h>
+#include <crypto/aes.h>
#include <net/macsec.h>
@@ -504,39 +504,17 @@ static u32 vsc8584_macsec_flow_context_id(struct macsec_flow *flow)
static int vsc8584_macsec_derive_key(const u8 key[MACSEC_KEYID_LEN],
u16 key_len, u8 hkey[16])
{
- struct crypto_skcipher *tfm = crypto_alloc_skcipher("ecb(aes)", 0, 0);
- struct skcipher_request *req = NULL;
- struct scatterlist src, dst;
- DECLARE_CRYPTO_WAIT(wait);
- u32 input[4] = {0};
+ const u8 input[AES_BLOCK_SIZE] = {0};
+ struct crypto_aes_ctx ctx;
int ret;
- if (IS_ERR(tfm))
- return PTR_ERR(tfm);
-
- req = skcipher_request_alloc(tfm, GFP_KERNEL);
- if (!req) {
- ret = -ENOMEM;
- goto out;
- }
-
- skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG |
- CRYPTO_TFM_REQ_MAY_SLEEP, crypto_req_done,
- &wait);
- ret = crypto_skcipher_setkey(tfm, key, key_len);
- if (ret < 0)
- goto out;
-
- sg_init_one(&src, input, 16);
- sg_init_one(&dst, hkey, 16);
- skcipher_request_set_crypt(req, &src, &dst, 16, NULL);
-
- ret = crypto_wait_req(crypto_skcipher_encrypt(req), &wait);
+ ret = aes_expandkey(&ctx, key, key_len);
+ if (ret)
+ return ret;
-out:
- skcipher_request_free(req);
- crypto_free_skcipher(tfm);
- return ret;
+ aes_encrypt(&ctx, hkey, input);
+ memzero_explicit(&ctx, sizeof(ctx));
+ return 0;
}
static int vsc8584_macsec_transformation(struct phy_device *phydev,