According to 802.15.4-2015 specification (section 9.2.1 Outgoing frame security procedure) just the outgoing payload is encrypted. The header carries security parameters to destination address, so is not encrypted. Signed-off-by: Diogenes Pereira <dvnp@xxxxxxxxxxxx> --- net/mac802154/llsec.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/net/mac802154/llsec.c b/net/mac802154/llsec.c index 1e1c9b2..3c8ae3f 100644 --- a/net/mac802154/llsec.c +++ b/net/mac802154/llsec.c @@ -623,13 +623,18 @@ llsec_do_encrypt_unauth(struct sk_buff *skb, const struct mac802154_llsec *sec, u8 iv[16]; struct scatterlist src; SKCIPHER_REQUEST_ON_STACK(req, key->tfm0); - int err; + int err, datalen; + unsigned char *data; llsec_geniv(iv, sec->params.hwaddr, &hdr->sec); - sg_init_one(&src, skb->data, skb->len); + + data = skb_mac_header(skb) + skb->mac_len; + datalen = skb_tail_pointer(skb) - data; + + sg_init_one(&src, data, datalen); skcipher_request_set_tfm(req, key->tfm0); skcipher_request_set_callback(req, 0, NULL, NULL); - skcipher_request_set_crypt(req, &src, &src, skb->len, iv); + skcipher_request_set_crypt(req, &src, &src, datalen, iv); err = crypto_skcipher_encrypt(req); skcipher_request_zero(req); return err; -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
