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wlantest: Dump decrypted Key Data from Group Handshake msg 1/2

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This commit is contained in:
Jouni Malinen 2010-11-12 01:02:45 +02:00
parent 64f45d070b
commit 8c2cfd973a
1 changed files with 38 additions and 0 deletions
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38
wlantest/rx_data.c
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@ -560,6 +560,44 @@ static void rx_data_eapol_key_1_of_2(struct wlantest *wt, const u8 *dst,
}
wpa_hexdump(MSG_DEBUG, "Decrypted EAPOL-Key Key Data",
decrypted, decrypted_len);
if (wt->write_pcap_dumper) {
/* Fill in a dummy Data frame header */
u8 buf[24 + 8 + sizeof(*eapol) + sizeof(*hdr)];
struct ieee80211_hdr *h;
struct wpa_eapol_key *k;
u8 *pos;
size_t plain_len;
plain_len = decrypted_len;
pos = decrypted;
while (pos + 1 < decrypted + decrypted_len) {
if (pos[0] == 0xdd && pos[1] == 0x00) {
/* Remove padding */
plain_len = pos - decrypted;
break;
}
pos += 2 + pos[1];
}
os_memset(buf, 0, sizeof(buf));
h = (struct ieee80211_hdr *) buf;
h->frame_control = host_to_le16(0x0208);
os_memcpy(h->addr1, dst, ETH_ALEN);
os_memcpy(h->addr2, src, ETH_ALEN);
os_memcpy(h->addr3, src, ETH_ALEN);
pos = (u8 *) (h + 1);
os_memcpy(pos, "\xaa\xaa\x03\x00\x00\x00\x88\x8e", 8);
pos += 8;
os_memcpy(pos, eapol, sizeof(*eapol));
pos += sizeof(*eapol);
os_memcpy(pos, hdr, sizeof(*hdr));
k = (struct wpa_eapol_key *) pos;
WPA_PUT_BE16(k->key_info,
key_info & ~WPA_KEY_INFO_ENCR_KEY_DATA);
WPA_PUT_BE16(k->key_data_length, plain_len);
write_pcap_decrypted(wt, buf, sizeof(buf),
decrypted, plain_len);
}
learn_kde_keys(bss, decrypted, decrypted_len, hdr->key_rsc);
os_free(decrypted);
}