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eapol: fix kek length for FILS rekeys (SHA384)

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FILS-SHA384 got overlooked and the kek length was being hard coded
to 32 bytes when encrypting the key data. There was also one occurence
where the kek_len was just being set incorrectly.
This commit is contained in:
James Prestwood 2019-04-17 17:02:07 -07:00 committed by Denis Kenzior
parent e940fc9282
commit 349acf292f
1 changed files with 3 additions and 2 deletions
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src/eapol.c
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@ -313,7 +313,7 @@ uint8_t *eapol_decrypt_key_data(enum ie_rsn_akm_suite akm, const uint8_t *kek,
if (akm == IE_RSN_AKM_SUITE_FILS_SHA256)
kek_len = 32;
else
kek_len = 48;
kek_len = 64;
if (!aes_siv_decrypt(kek, kek_len, key_data,
key_data_len, ad, 1, buf))
@ -1805,7 +1805,8 @@ static void eapol_handle_gtk_1_of_2(struct eapol_sm *sm,
ad[0].iov_base = step2;
ad[0].iov_len = EAPOL_KEY_DATA(step2, 0) - (uint8_t *)step2;
if (!aes_siv_encrypt(handshake_state_get_kek(sm->handshake), 32,
if (!aes_siv_encrypt(handshake_state_get_kek(sm->handshake),
handshake_state_get_kek_len(sm->handshake),
EAPOL_KEY_DATA(step2, 0), 0, ad, 1, encr)) {
l_debug("AES-SIV encryption failed");
l_free(step2);