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eap-wsc: Send M7 messages

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This commit is contained in:
Denis Kenzior 2016-08-31 12:50:44 -05:00
parent f542a18f4f
commit 34ed84dc41
1 changed files with 43 additions and 0 deletions
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43
src/eap-wsc.c
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@ -57,6 +57,7 @@ enum state {
STATE_EXPECT_M2, STATE_EXPECT_M2,
STATE_EXPECT_M4, STATE_EXPECT_M4,
STATE_EXPECT_M6, STATE_EXPECT_M6,
STATE_EXPECT_M8,
}; };
static struct l_key *dh5_generator; static struct l_key *dh5_generator;
@ -337,6 +338,45 @@ static void eap_wsc_send_nack(struct eap_state *eap,
return; return;
} }
static void eap_wsc_send_m7(struct eap_state *eap,
const uint8_t *m6_pdu, size_t m6_len)
{
struct eap_wsc_state *wsc = eap_get_data(eap);
struct wsc_m7_encrypted_settings m7es;
struct wsc_m7 m7;
uint8_t *pdu;
size_t pdu_len;
/* 20 for SNonce, 12 for Authenticator, 16 for IV + up to 16 pad */
uint8_t encrypted[64];
size_t encrypted_len;
bool r;
memcpy(m7es.e_snonce2, wsc->e_snonce2, sizeof(wsc->e_snonce2));
pdu = wsc_build_m7_encrypted_settings(&m7es, &pdu_len);
if (!pdu)
return;
keywrap_authenticator_put(wsc, pdu, pdu_len);
r = encrypted_settings_encrypt(wsc, wsc->iv2, pdu, pdu_len,
encrypted, &encrypted_len);
l_free(pdu);
if (!r)
return;
m7.version2 = true;
memcpy(m7.registrar_nonce, wsc->m2->registrar_nonce,
sizeof(m7.registrar_nonce));
pdu = wsc_build_m7(&m7, encrypted, encrypted_len, &pdu_len);
if (!pdu)
return;
authenticator_put(wsc, m6_pdu, m6_len, pdu, pdu_len);
eap_wsc_send_response(eap, pdu, pdu_len);
wsc->state = STATE_EXPECT_M8;
}
static void eap_wsc_handle_m6(struct eap_state *eap, static void eap_wsc_handle_m6(struct eap_state *eap,
const uint8_t *pdu, size_t len) const uint8_t *pdu, size_t len)
{ {
@ -377,6 +417,7 @@ static void eap_wsc_handle_m6(struct eap_state *eap,
return; return;
} }
eap_wsc_send_m7(eap, pdu, len);
return; return;
invalid_settings: invalid_settings:
@ -701,6 +742,8 @@ static void eap_wsc_handle_request(struct eap_state *eap,
case STATE_EXPECT_M6: case STATE_EXPECT_M6:
eap_wsc_handle_m6(eap, pkt + 2, len - 2); eap_wsc_handle_m6(eap, pkt + 2, len - 2);
break; break;
case STATE_EXPECT_M8:
break;
} }
} }