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fils: include RSNE in authenticate

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802.11ai mandates that the RSN element is included during authentication
for FILS. This previously was happening by chance since supplicant_ie
was being included with CMD_AUTHENTICATE. This included more than just
the RSNE so that was removed in an earlier commit. Now FILS builds the
RSNE itself and includes this with CMD_AUTHENTICATE.
This commit is contained in:
James Prestwood 2020-05-07 14:50:59 -07:00 committed by Denis Kenzior
parent c7a17e5987
commit d38bd513c9
1 changed files with 11 additions and 0 deletions
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11
src/fils.c
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@ -91,6 +91,8 @@ static void fils_erp_tx_func(const uint8_t *eap_data, size_t len,
uint8_t data[256]; uint8_t data[256];
uint8_t *ptr = data; uint8_t *ptr = data;
unsigned int tlv_len; unsigned int tlv_len;
struct ie_rsn_info rsn_info;
uint8_t *rsne;
l_getrandom(fils->nonce, 16); l_getrandom(fils->nonce, 16);
l_getrandom(fils->session, 8); l_getrandom(fils->session, 8);
@ -106,6 +108,15 @@ static void fils_erp_tx_func(const uint8_t *eap_data, size_t len,
ie_tlv_builder_init(&builder, ptr, sizeof(data) - 4); ie_tlv_builder_init(&builder, ptr, sizeof(data) - 4);
ie_parse_rsne_from_data(fils->hs->supplicant_ie,
fils->hs->supplicant_ie[1] + 2,
&rsn_info);
rsne = alloca(256);
ie_build_rsne(&rsn_info, rsne);
ie_tlv_builder_next(&builder, IE_TYPE_RSN);
ie_tlv_builder_set_data(&builder, rsne + 2, rsne[1]);
ie_tlv_builder_next(&builder, IE_TYPE_FILS_NONCE); ie_tlv_builder_next(&builder, IE_TYPE_FILS_NONCE);
ie_tlv_builder_set_data(&builder, fils->nonce, sizeof(fils->nonce)); ie_tlv_builder_set_data(&builder, fils->nonce, sizeof(fils->nonce));