+++ /dev/null
-/*
- * WPA/RSN - Shared functions for supplicant and authenticator
- * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- */
-
-#include "includes.h"
-
-#include "common.h"
-#include "crypto/md5.h"
-#include "crypto/sha1.h"
-#include "crypto/sha256.h"
-#include "crypto/aes_wrap.h"
-#include "crypto/crypto.h"
-#include "ieee802_11_defs.h"
-#include "defs.h"
-#include "wpa_common.h"
-
-
-/**
- * wpa_eapol_key_mic - Calculate EAPOL-Key MIC
- * @key: EAPOL-Key Key Confirmation Key (KCK)
- * @ver: Key descriptor version (WPA_KEY_INFO_TYPE_*)
- * @buf: Pointer to the beginning of the EAPOL header (version field)
- * @len: Length of the EAPOL frame (from EAPOL header to the end of the frame)
- * @mic: Pointer to the buffer to which the EAPOL-Key MIC is written
- * Returns: 0 on success, -1 on failure
- *
- * Calculate EAPOL-Key MIC for an EAPOL-Key packet. The EAPOL-Key MIC field has
- * to be cleared (all zeroes) when calling this function.
- *
- * Note: 'IEEE Std 802.11i-2004 - 8.5.2 EAPOL-Key frames' has an error in the
- * description of the Key MIC calculation. It includes packet data from the
- * beginning of the EAPOL-Key header, not EAPOL header. This incorrect change
- * happened during final editing of the standard and the correct behavior is
- * defined in the last draft (IEEE 802.11i/D10).
- */
-int wpa_eapol_key_mic(const u8 *key, int ver, const u8 *buf, size_t len,
- u8 *mic)
-{
- u8 hash[SHA1_MAC_LEN];
-
- switch (ver) {
- case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
- return hmac_md5(key, 16, buf, len, mic);
- case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
- if (hmac_sha1(key, 16, buf, len, hash))
- return -1;
- os_memcpy(mic, hash, MD5_MAC_LEN);
- break;
-#if defined(CONFIG_IEEE80211R) || defined(CONFIG_IEEE80211W)
- case WPA_KEY_INFO_TYPE_AES_128_CMAC:
- return omac1_aes_128(key, buf, len, mic);
-#endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */
- default:
- return -1;
- }
-
- return 0;
-}
-
-
-/**
- * wpa_pmk_to_ptk - Calculate PTK from PMK, addresses, and nonces
- * @pmk: Pairwise master key
- * @pmk_len: Length of PMK
- * @label: Label to use in derivation
- * @addr1: AA or SA
- * @addr2: SA or AA
- * @nonce1: ANonce or SNonce
- * @nonce2: SNonce or ANonce
- * @ptk: Buffer for pairwise transient key
- * @ptk_len: Length of PTK
- * @use_sha256: Whether to use SHA256-based KDF
- *
- * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
- * PTK = PRF-X(PMK, "Pairwise key expansion",
- * Min(AA, SA) || Max(AA, SA) ||
- * Min(ANonce, SNonce) || Max(ANonce, SNonce))
- *
- * STK = PRF-X(SMK, "Peer key expansion",
- * Min(MAC_I, MAC_P) || Max(MAC_I, MAC_P) ||
- * Min(INonce, PNonce) || Max(INonce, PNonce))
- */
-void wpa_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const char *label,
- const u8 *addr1, const u8 *addr2,
- const u8 *nonce1, const u8 *nonce2,
- u8 *ptk, size_t ptk_len, int use_sha256)
-{
- u8 data[2 * ETH_ALEN + 2 * WPA_NONCE_LEN];
-
- if (os_memcmp(addr1, addr2, ETH_ALEN) < 0) {
- os_memcpy(data, addr1, ETH_ALEN);
- os_memcpy(data + ETH_ALEN, addr2, ETH_ALEN);
- } else {
- os_memcpy(data, addr2, ETH_ALEN);
- os_memcpy(data + ETH_ALEN, addr1, ETH_ALEN);
- }
-
- if (os_memcmp(nonce1, nonce2, WPA_NONCE_LEN) < 0) {
- os_memcpy(data + 2 * ETH_ALEN, nonce1, WPA_NONCE_LEN);
- os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce2,
- WPA_NONCE_LEN);
- } else {
- os_memcpy(data + 2 * ETH_ALEN, nonce2, WPA_NONCE_LEN);
- os_memcpy(data + 2 * ETH_ALEN + WPA_NONCE_LEN, nonce1,
- WPA_NONCE_LEN);
- }
-
-#ifdef CONFIG_IEEE80211W
- if (use_sha256)
- sha256_prf(pmk, pmk_len, label, data, sizeof(data),
- ptk, ptk_len);
- else
-#endif /* CONFIG_IEEE80211W */
- sha1_prf(pmk, pmk_len, label, data, sizeof(data), ptk,
- ptk_len);
-
- wpa_printf(MSG_DEBUG, "WPA: PTK derivation - A1=" MACSTR " A2=" MACSTR,
- MAC2STR(addr1), MAC2STR(addr2));
- wpa_hexdump_key(MSG_DEBUG, "WPA: PMK", pmk, pmk_len);
- wpa_hexdump_key(MSG_DEBUG, "WPA: PTK", ptk, ptk_len);
-}
-
-
-#ifdef CONFIG_IEEE80211R
-int wpa_ft_mic(const u8 *kck, const u8 *sta_addr, const u8 *ap_addr,
- u8 transaction_seqnum, const u8 *mdie, size_t mdie_len,
- const u8 *ftie, size_t ftie_len,
- const u8 *rsnie, size_t rsnie_len,
- const u8 *ric, size_t ric_len, u8 *mic)
-{
- u8 *buf, *pos;
- size_t buf_len;
-
- buf_len = 2 * ETH_ALEN + 1 + mdie_len + ftie_len + rsnie_len + ric_len;
- buf = os_malloc(buf_len);
- if (buf == NULL)
- return -1;
-
- pos = buf;
- os_memcpy(pos, sta_addr, ETH_ALEN);
- pos += ETH_ALEN;
- os_memcpy(pos, ap_addr, ETH_ALEN);
- pos += ETH_ALEN;
- *pos++ = transaction_seqnum;
- if (rsnie) {
- os_memcpy(pos, rsnie, rsnie_len);
- pos += rsnie_len;
- }
- if (mdie) {
- os_memcpy(pos, mdie, mdie_len);
- pos += mdie_len;
- }
- if (ftie) {
- struct rsn_ftie *_ftie;
- os_memcpy(pos, ftie, ftie_len);
- if (ftie_len < 2 + sizeof(*_ftie)) {
- os_free(buf);
- return -1;
- }
- _ftie = (struct rsn_ftie *) (pos + 2);
- os_memset(_ftie->mic, 0, sizeof(_ftie->mic));
- pos += ftie_len;
- }
- if (ric) {
- os_memcpy(pos, ric, ric_len);
- pos += ric_len;
- }
-
- wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", buf, pos - buf);
- if (omac1_aes_128(kck, buf, pos - buf, mic)) {
- os_free(buf);
- return -1;
- }
-
- os_free(buf);
-
- return 0;
-}
-#endif /* CONFIG_IEEE80211R */
-
-
-#ifndef CONFIG_NO_WPA2
-static int rsn_selector_to_bitfield(const u8 *s)
-{
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NONE)
- return WPA_CIPHER_NONE;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_WEP40)
- return WPA_CIPHER_WEP40;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_TKIP)
- return WPA_CIPHER_TKIP;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP)
- return WPA_CIPHER_CCMP;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_WEP104)
- return WPA_CIPHER_WEP104;
-#ifdef CONFIG_IEEE80211W
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
- return WPA_CIPHER_AES_128_CMAC;
-#endif /* CONFIG_IEEE80211W */
- return 0;
-}
-
-
-static int rsn_key_mgmt_to_bitfield(const u8 *s)
-{
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_UNSPEC_802_1X)
- return WPA_KEY_MGMT_IEEE8021X;
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X)
- return WPA_KEY_MGMT_PSK;
-#ifdef CONFIG_IEEE80211R
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X)
- return WPA_KEY_MGMT_FT_IEEE8021X;
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_PSK)
- return WPA_KEY_MGMT_FT_PSK;
-#endif /* CONFIG_IEEE80211R */
-#ifdef CONFIG_IEEE80211W
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SHA256)
- return WPA_KEY_MGMT_IEEE8021X_SHA256;
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_SHA256)
- return WPA_KEY_MGMT_PSK_SHA256;
-#endif /* CONFIG_IEEE80211W */
- return 0;
-}
-#endif /* CONFIG_NO_WPA2 */
-
-
-/**
- * wpa_parse_wpa_ie_rsn - Parse RSN IE
- * @rsn_ie: Buffer containing RSN IE
- * @rsn_ie_len: RSN IE buffer length (including IE number and length octets)
- * @data: Pointer to structure that will be filled in with parsed data
- * Returns: 0 on success, <0 on failure
- */
-int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len,
- struct wpa_ie_data *data)
-{
-#ifndef CONFIG_NO_WPA2
- const struct rsn_ie_hdr *hdr;
- const u8 *pos;
- int left;
- int i, count;
-
- os_memset(data, 0, sizeof(*data));
- data->proto = WPA_PROTO_RSN;
- data->pairwise_cipher = WPA_CIPHER_CCMP;
- data->group_cipher = WPA_CIPHER_CCMP;
- data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
- data->capabilities = 0;
- data->pmkid = NULL;
- data->num_pmkid = 0;
-#ifdef CONFIG_IEEE80211W
- data->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
-#else /* CONFIG_IEEE80211W */
- data->mgmt_group_cipher = 0;
-#endif /* CONFIG_IEEE80211W */
-
- if (rsn_ie_len == 0) {
- /* No RSN IE - fail silently */
- return -1;
- }
-
- if (rsn_ie_len < sizeof(struct rsn_ie_hdr)) {
- wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
- __func__, (unsigned long) rsn_ie_len);
- return -1;
- }
-
- hdr = (const struct rsn_ie_hdr *) rsn_ie;
-
- if (hdr->elem_id != WLAN_EID_RSN ||
- hdr->len != rsn_ie_len - 2 ||
- WPA_GET_LE16(hdr->version) != RSN_VERSION) {
- wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
- __func__);
- return -2;
- }
-
- pos = (const u8 *) (hdr + 1);
- left = rsn_ie_len - sizeof(*hdr);
-
- if (left >= RSN_SELECTOR_LEN) {
- data->group_cipher = rsn_selector_to_bitfield(pos);
-#ifdef CONFIG_IEEE80211W
- if (data->group_cipher == WPA_CIPHER_AES_128_CMAC) {
- wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as group "
- "cipher", __func__);
- return -1;
- }
-#endif /* CONFIG_IEEE80211W */
- pos += RSN_SELECTOR_LEN;
- left -= RSN_SELECTOR_LEN;
- } else if (left > 0) {
- wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
- __func__, left);
- return -3;
- }
-
- if (left >= 2) {
- data->pairwise_cipher = 0;
- count = WPA_GET_LE16(pos);
- pos += 2;
- left -= 2;
- if (count == 0 || left < count * RSN_SELECTOR_LEN) {
- wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
- "count %u left %u", __func__, count, left);
- return -4;
- }
- for (i = 0; i < count; i++) {
- data->pairwise_cipher |= rsn_selector_to_bitfield(pos);
- pos += RSN_SELECTOR_LEN;
- left -= RSN_SELECTOR_LEN;
- }
-#ifdef CONFIG_IEEE80211W
- if (data->pairwise_cipher & WPA_CIPHER_AES_128_CMAC) {
- wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as "
- "pairwise cipher", __func__);
- return -1;
- }
-#endif /* CONFIG_IEEE80211W */
- } else if (left == 1) {
- wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
- __func__);
- return -5;
- }
-
- if (left >= 2) {
- data->key_mgmt = 0;
- count = WPA_GET_LE16(pos);
- pos += 2;
- left -= 2;
- if (count == 0 || left < count * RSN_SELECTOR_LEN) {
- wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
- "count %u left %u", __func__, count, left);
- return -6;
- }
- for (i = 0; i < count; i++) {
- data->key_mgmt |= rsn_key_mgmt_to_bitfield(pos);
- pos += RSN_SELECTOR_LEN;
- left -= RSN_SELECTOR_LEN;
- }
- } else if (left == 1) {
- wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
- __func__);
- return -7;
- }
-
- if (left >= 2) {
- data->capabilities = WPA_GET_LE16(pos);
- pos += 2;
- left -= 2;
- }
-
- if (left >= 2) {
- data->num_pmkid = WPA_GET_LE16(pos);
- pos += 2;
- left -= 2;
- if (left < (int) data->num_pmkid * PMKID_LEN) {
- wpa_printf(MSG_DEBUG, "%s: PMKID underflow "
- "(num_pmkid=%lu left=%d)",
- __func__, (unsigned long) data->num_pmkid,
- left);
- data->num_pmkid = 0;
- return -9;
- } else {
- data->pmkid = pos;
- pos += data->num_pmkid * PMKID_LEN;
- left -= data->num_pmkid * PMKID_LEN;
- }
- }
-
-#ifdef CONFIG_IEEE80211W
- if (left >= 4) {
- data->mgmt_group_cipher = rsn_selector_to_bitfield(pos);
- if (data->mgmt_group_cipher != WPA_CIPHER_AES_128_CMAC) {
- wpa_printf(MSG_DEBUG, "%s: Unsupported management "
- "group cipher 0x%x", __func__,
- data->mgmt_group_cipher);
- return -10;
- }
- pos += RSN_SELECTOR_LEN;
- left -= RSN_SELECTOR_LEN;
- }
-#endif /* CONFIG_IEEE80211W */
-
- if (left > 0) {
- wpa_printf(MSG_DEBUG, "%s: ie has %u trailing bytes - ignored",
- __func__, left);
- }
-
- return 0;
-#else /* CONFIG_NO_WPA2 */
- return -1;
-#endif /* CONFIG_NO_WPA2 */
-}
-
-
-#ifdef CONFIG_IEEE80211R
-
-/**
- * wpa_derive_pmk_r0 - Derive PMK-R0 and PMKR0Name
- *
- * IEEE Std 802.11r-2008 - 8.5.1.5.3
- */
-void wpa_derive_pmk_r0(const u8 *xxkey, size_t xxkey_len,
- const u8 *ssid, size_t ssid_len,
- const u8 *mdid, const u8 *r0kh_id, size_t r0kh_id_len,
- const u8 *s0kh_id, u8 *pmk_r0, u8 *pmk_r0_name)
-{
- u8 buf[1 + WPA_MAX_SSID_LEN + MOBILITY_DOMAIN_ID_LEN + 1 +
- FT_R0KH_ID_MAX_LEN + ETH_ALEN];
- u8 *pos, r0_key_data[48], hash[32];
- const u8 *addr[2];
- size_t len[2];
-
- /*
- * R0-Key-Data = KDF-384(XXKey, "FT-R0",
- * SSIDlength || SSID || MDID || R0KHlength ||
- * R0KH-ID || S0KH-ID)
- * XXKey is either the second 256 bits of MSK or PSK.
- * PMK-R0 = L(R0-Key-Data, 0, 256)
- * PMK-R0Name-Salt = L(R0-Key-Data, 256, 128)
- */
- if (ssid_len > WPA_MAX_SSID_LEN || r0kh_id_len > FT_R0KH_ID_MAX_LEN)
- return;
- pos = buf;
- *pos++ = ssid_len;
- os_memcpy(pos, ssid, ssid_len);
- pos += ssid_len;
- os_memcpy(pos, mdid, MOBILITY_DOMAIN_ID_LEN);
- pos += MOBILITY_DOMAIN_ID_LEN;
- *pos++ = r0kh_id_len;
- os_memcpy(pos, r0kh_id, r0kh_id_len);
- pos += r0kh_id_len;
- os_memcpy(pos, s0kh_id, ETH_ALEN);
- pos += ETH_ALEN;
-
- sha256_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
- r0_key_data, sizeof(r0_key_data));
- os_memcpy(pmk_r0, r0_key_data, PMK_LEN);
-
- /*
- * PMKR0Name = Truncate-128(SHA-256("FT-R0N" || PMK-R0Name-Salt)
- */
- addr[0] = (const u8 *) "FT-R0N";
- len[0] = 6;
- addr[1] = r0_key_data + PMK_LEN;
- len[1] = 16;
-
- sha256_vector(2, addr, len, hash);
- os_memcpy(pmk_r0_name, hash, WPA_PMK_NAME_LEN);
-}
-
-
-/**
- * wpa_derive_pmk_r1_name - Derive PMKR1Name
- *
- * IEEE Std 802.11r-2008 - 8.5.1.5.4
- */
-void wpa_derive_pmk_r1_name(const u8 *pmk_r0_name, const u8 *r1kh_id,
- const u8 *s1kh_id, u8 *pmk_r1_name)
-{
- u8 hash[32];
- const u8 *addr[4];
- size_t len[4];
-
- /*
- * PMKR1Name = Truncate-128(SHA-256("FT-R1N" || PMKR0Name ||
- * R1KH-ID || S1KH-ID))
- */
- addr[0] = (const u8 *) "FT-R1N";
- len[0] = 6;
- addr[1] = pmk_r0_name;
- len[1] = WPA_PMK_NAME_LEN;
- addr[2] = r1kh_id;
- len[2] = FT_R1KH_ID_LEN;
- addr[3] = s1kh_id;
- len[3] = ETH_ALEN;
-
- sha256_vector(4, addr, len, hash);
- os_memcpy(pmk_r1_name, hash, WPA_PMK_NAME_LEN);
-}
-
-
-/**
- * wpa_derive_pmk_r1 - Derive PMK-R1 and PMKR1Name from PMK-R0
- *
- * IEEE Std 802.11r-2008 - 8.5.1.5.4
- */
-void wpa_derive_pmk_r1(const u8 *pmk_r0, const u8 *pmk_r0_name,
- const u8 *r1kh_id, const u8 *s1kh_id,
- u8 *pmk_r1, u8 *pmk_r1_name)
-{
- u8 buf[FT_R1KH_ID_LEN + ETH_ALEN];
- u8 *pos;
-
- /* PMK-R1 = KDF-256(PMK-R0, "FT-R1", R1KH-ID || S1KH-ID) */
- pos = buf;
- os_memcpy(pos, r1kh_id, FT_R1KH_ID_LEN);
- pos += FT_R1KH_ID_LEN;
- os_memcpy(pos, s1kh_id, ETH_ALEN);
- pos += ETH_ALEN;
-
- sha256_prf(pmk_r0, PMK_LEN, "FT-R1", buf, pos - buf, pmk_r1, PMK_LEN);
-
- wpa_derive_pmk_r1_name(pmk_r0_name, r1kh_id, s1kh_id, pmk_r1_name);
-}
-
-
-/**
- * wpa_pmk_r1_to_ptk - Derive PTK and PTKName from PMK-R1
- *
- * IEEE Std 802.11r-2008 - 8.5.1.5.5
- */
-void wpa_pmk_r1_to_ptk(const u8 *pmk_r1, const u8 *snonce, const u8 *anonce,
- const u8 *sta_addr, const u8 *bssid,
- const u8 *pmk_r1_name,
- u8 *ptk, size_t ptk_len, u8 *ptk_name)
-{
- u8 buf[2 * WPA_NONCE_LEN + 2 * ETH_ALEN];
- u8 *pos, hash[32];
- const u8 *addr[6];
- size_t len[6];
-
- /*
- * PTK = KDF-PTKLen(PMK-R1, "FT-PTK", SNonce || ANonce ||
- * BSSID || STA-ADDR)
- */
- pos = buf;
- os_memcpy(pos, snonce, WPA_NONCE_LEN);
- pos += WPA_NONCE_LEN;
- os_memcpy(pos, anonce, WPA_NONCE_LEN);
- pos += WPA_NONCE_LEN;
- os_memcpy(pos, bssid, ETH_ALEN);
- pos += ETH_ALEN;
- os_memcpy(pos, sta_addr, ETH_ALEN);
- pos += ETH_ALEN;
-
- sha256_prf(pmk_r1, PMK_LEN, "FT-PTK", buf, pos - buf, ptk, ptk_len);
-
- /*
- * PTKName = Truncate-128(SHA-256(PMKR1Name || "FT-PTKN" || SNonce ||
- * ANonce || BSSID || STA-ADDR))
- */
- addr[0] = pmk_r1_name;
- len[0] = WPA_PMK_NAME_LEN;
- addr[1] = (const u8 *) "FT-PTKN";
- len[1] = 7;
- addr[2] = snonce;
- len[2] = WPA_NONCE_LEN;
- addr[3] = anonce;
- len[3] = WPA_NONCE_LEN;
- addr[4] = bssid;
- len[4] = ETH_ALEN;
- addr[5] = sta_addr;
- len[5] = ETH_ALEN;
-
- sha256_vector(6, addr, len, hash);
- os_memcpy(ptk_name, hash, WPA_PMK_NAME_LEN);
-}
-
-#endif /* CONFIG_IEEE80211R */
-
-
-/**
- * rsn_pmkid - Calculate PMK identifier
- * @pmk: Pairwise master key
- * @pmk_len: Length of pmk in bytes
- * @aa: Authenticator address
- * @spa: Supplicant address
- * @pmkid: Buffer for PMKID
- * @use_sha256: Whether to use SHA256-based KDF
- *
- * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
- * PMKID = HMAC-SHA1-128(PMK, "PMK Name" || AA || SPA)
- */
-void rsn_pmkid(const u8 *pmk, size_t pmk_len, const u8 *aa, const u8 *spa,
- u8 *pmkid, int use_sha256)
-{
- char *title = "PMK Name";
- const u8 *addr[3];
- const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
- unsigned char hash[SHA256_MAC_LEN];
-
- addr[0] = (u8 *) title;
- addr[1] = aa;
- addr[2] = spa;
-
-#ifdef CONFIG_IEEE80211W
- if (use_sha256)
- hmac_sha256_vector(pmk, pmk_len, 3, addr, len, hash);
- else
-#endif /* CONFIG_IEEE80211W */
- hmac_sha1_vector(pmk, pmk_len, 3, addr, len, hash);
- os_memcpy(pmkid, hash, PMKID_LEN);
-}
-
-
-/**
- * wpa_cipher_txt - Convert cipher suite to a text string
- * @cipher: Cipher suite (WPA_CIPHER_* enum)
- * Returns: Pointer to a text string of the cipher suite name
- */
-const char * wpa_cipher_txt(int cipher)
-{
- switch (cipher) {
- case WPA_CIPHER_NONE:
- return "NONE";
- case WPA_CIPHER_WEP40:
- return "WEP-40";
- case WPA_CIPHER_WEP104:
- return "WEP-104";
- case WPA_CIPHER_TKIP:
- return "TKIP";
- case WPA_CIPHER_CCMP:
- return "CCMP";
- case WPA_CIPHER_CCMP | WPA_CIPHER_TKIP:
- return "CCMP+TKIP";
- default:
- return "UNKNOWN";
- }
-}
-
-
-/**
- * wpa_key_mgmt_txt - Convert key management suite to a text string
- * @key_mgmt: Key management suite (WPA_KEY_MGMT_* enum)
- * @proto: WPA/WPA2 version (WPA_PROTO_*)
- * Returns: Pointer to a text string of the key management suite name
- */
-const char * wpa_key_mgmt_txt(int key_mgmt, int proto)
-{
- switch (key_mgmt) {
- case WPA_KEY_MGMT_IEEE8021X:
- if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
- return "WPA2+WPA/IEEE 802.1X/EAP";
- return proto == WPA_PROTO_RSN ?
- "WPA2/IEEE 802.1X/EAP" : "WPA/IEEE 802.1X/EAP";
- case WPA_KEY_MGMT_PSK:
- if (proto == (WPA_PROTO_RSN | WPA_PROTO_WPA))
- return "WPA2-PSK+WPA-PSK";
- return proto == WPA_PROTO_RSN ?
- "WPA2-PSK" : "WPA-PSK";
- case WPA_KEY_MGMT_NONE:
- return "NONE";
- case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
- return "IEEE 802.1X (no WPA)";
-#ifdef CONFIG_IEEE80211R
- case WPA_KEY_MGMT_FT_IEEE8021X:
- return "FT-EAP";
- case WPA_KEY_MGMT_FT_PSK:
- return "FT-PSK";
-#endif /* CONFIG_IEEE80211R */
-#ifdef CONFIG_IEEE80211W
- case WPA_KEY_MGMT_IEEE8021X_SHA256:
- return "WPA2-EAP-SHA256";
- case WPA_KEY_MGMT_PSK_SHA256:
- return "WPA2-PSK-SHA256";
-#endif /* CONFIG_IEEE80211W */
- default:
- return "UNKNOWN";
- }
-}
-
-
-int wpa_compare_rsn_ie(int ft_initial_assoc,
- const u8 *ie1, size_t ie1len,
- const u8 *ie2, size_t ie2len)
-{
- if (ie1 == NULL || ie2 == NULL)
- return -1;
-
- if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0)
- return 0; /* identical IEs */
-
-#ifdef CONFIG_IEEE80211R
- if (ft_initial_assoc) {
- struct wpa_ie_data ie1d, ie2d;
- /*
- * The PMKID-List in RSN IE is different between Beacon/Probe
- * Response/(Re)Association Request frames and EAPOL-Key
- * messages in FT initial mobility domain association. Allow
- * for this, but verify that other parts of the RSN IEs are
- * identical.
- */
- if (wpa_parse_wpa_ie_rsn(ie1, ie1len, &ie1d) < 0 ||
- wpa_parse_wpa_ie_rsn(ie2, ie2len, &ie2d) < 0)
- return -1;
- if (ie1d.proto == ie2d.proto &&
- ie1d.pairwise_cipher == ie2d.pairwise_cipher &&
- ie1d.group_cipher == ie2d.group_cipher &&
- ie1d.key_mgmt == ie2d.key_mgmt &&
- ie1d.capabilities == ie2d.capabilities &&
- ie1d.mgmt_group_cipher == ie2d.mgmt_group_cipher)
- return 0;
- }
-#endif /* CONFIG_IEEE80211R */
-
- return -1;
-}
-
-
-#ifdef CONFIG_IEEE80211R
-int wpa_insert_pmkid(u8 *ies, size_t ies_len, const u8 *pmkid)
-{
- u8 *start, *end, *rpos, *rend;
- int added = 0;
-
- start = ies;
- end = ies + ies_len;
-
- while (start < end) {
- if (*start == WLAN_EID_RSN)
- break;
- start += 2 + start[1];
- }
- if (start >= end) {
- wpa_printf(MSG_ERROR, "FT: Could not find RSN IE in "
- "IEs data");
- return -1;
- }
- wpa_hexdump(MSG_DEBUG, "FT: RSN IE before modification",
- start, 2 + start[1]);
-
- /* Find start of PMKID-Count */
- rpos = start + 2;
- rend = rpos + start[1];
-
- /* Skip Version and Group Data Cipher Suite */
- rpos += 2 + 4;
- /* Skip Pairwise Cipher Suite Count and List */
- rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
- /* Skip AKM Suite Count and List */
- rpos += 2 + WPA_GET_LE16(rpos) * RSN_SELECTOR_LEN;
-
- if (rpos == rend) {
- /* Add RSN Capabilities */
- os_memmove(rpos + 2, rpos, end - rpos);
- *rpos++ = 0;
- *rpos++ = 0;
- } else {
- /* Skip RSN Capabilities */
- rpos += 2;
- if (rpos > rend) {
- wpa_printf(MSG_ERROR, "FT: Could not parse RSN IE in "
- "IEs data");
- return -1;
- }
- }
-
- if (rpos == rend) {
- /* No PMKID-Count field included; add it */
- os_memmove(rpos + 2 + PMKID_LEN, rpos, end - rpos);
- WPA_PUT_LE16(rpos, 1);
- rpos += 2;
- os_memcpy(rpos, pmkid, PMKID_LEN);
- added += 2 + PMKID_LEN;
- start[1] += 2 + PMKID_LEN;
- } else {
- /* PMKID-Count was included; use it */
- if (WPA_GET_LE16(rpos) != 0) {
- wpa_printf(MSG_ERROR, "FT: Unexpected PMKID "
- "in RSN IE in EAPOL-Key data");
- return -1;
- }
- WPA_PUT_LE16(rpos, 1);
- rpos += 2;
- os_memmove(rpos + PMKID_LEN, rpos, end - rpos);
- os_memcpy(rpos, pmkid, PMKID_LEN);
- added += PMKID_LEN;
- start[1] += PMKID_LEN;
- }
-
- wpa_hexdump(MSG_DEBUG, "FT: RSN IE after modification "
- "(PMKID inserted)", start, 2 + start[1]);
-
- return added;
-}
-#endif /* CONFIG_IEEE80211R */
projects / mech_eap.git / blobdiff