+++ /dev/null
-/*
- * WPA/RSN - Shared functions for supplicant and authenticator
- * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
- *
- * This software may be distributed under the terms of the BSD license.
- * See README for more details.
- */
-
-#include "includes.h"
-
-#include "common.h"
-#include "crypto/md5.h"
-#include "crypto/sha1.h"
-#include "crypto/sha256.h"
-#include "crypto/sha384.h"
-#include "crypto/aes_wrap.h"
-#include "crypto/crypto.h"
-#include "ieee802_11_defs.h"
-#include "defs.h"
-#include "wpa_common.h"
-
-
-static unsigned int wpa_kck_len(int akmp)
-{
- if (akmp == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
- return 24;
- return 16;
-}
-
-
-static unsigned int wpa_kek_len(int akmp)
-{
- if (akmp == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
- return 32;
- return 16;
-}
-
-
-unsigned int wpa_mic_len(int akmp)
-{
- if (akmp == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
- return 24;
- return 16;
-}
-
-
-/**
- * wpa_eapol_key_mic - Calculate EAPOL-Key MIC
- * @key: EAPOL-Key Key Confirmation Key (KCK)
- * @key_len: KCK length in octets
- * @akmp: WPA_KEY_MGMT_* used in key derivation
- * @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, size_t key_len, int akmp, int ver,
- const u8 *buf, size_t len, u8 *mic)
-{
- u8 hash[SHA384_MAC_LEN];
-
- switch (ver) {
-#ifndef CONFIG_FIPS
- case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
- return hmac_md5(key, key_len, buf, len, mic);
-#endif /* CONFIG_FIPS */
- case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
- if (hmac_sha1(key, key_len, 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 */
- case WPA_KEY_INFO_TYPE_AKM_DEFINED:
- switch (akmp) {
-#ifdef CONFIG_HS20
- case WPA_KEY_MGMT_OSEN:
- return omac1_aes_128(key, buf, len, mic);
-#endif /* CONFIG_HS20 */
-#ifdef CONFIG_SUITEB
- case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
- if (hmac_sha256(key, key_len, buf, len, hash))
- return -1;
- os_memcpy(mic, hash, MD5_MAC_LEN);
- break;
-#endif /* CONFIG_SUITEB */
-#ifdef CONFIG_SUITEB192
- case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
- if (hmac_sha384(key, key_len, buf, len, hash))
- return -1;
- os_memcpy(mic, hash, 24);
- break;
-#endif /* CONFIG_SUITEB192 */
- default:
- return -1;
- }
- break;
- 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
- * @akmp: Negotiated AKM
- * @cipher: Negotiated pairwise cipher
- * Returns: 0 on success, -1 on failure
- *
- * 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))
- */
-int 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,
- struct wpa_ptk *ptk, int akmp, int cipher)
-{
- u8 data[2 * ETH_ALEN + 2 * WPA_NONCE_LEN];
- u8 tmp[WPA_KCK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN];
- size_t ptk_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);
- }
-
- ptk->kck_len = wpa_kck_len(akmp);
- ptk->kek_len = wpa_kek_len(akmp);
- ptk->tk_len = wpa_cipher_key_len(cipher);
- ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len;
-
-#ifdef CONFIG_SUITEB192
- if (wpa_key_mgmt_sha384(akmp))
- sha384_prf(pmk, pmk_len, label, data, sizeof(data),
- tmp, ptk_len);
- else
-#endif /* CONFIG_SUITEB192 */
-#ifdef CONFIG_IEEE80211W
- if (wpa_key_mgmt_sha256(akmp))
- sha256_prf(pmk, pmk_len, label, data, sizeof(data),
- tmp, ptk_len);
- else
-#endif /* CONFIG_IEEE80211W */
- sha1_prf(pmk, pmk_len, label, data, sizeof(data), tmp, ptk_len);
-
- wpa_printf(MSG_DEBUG, "WPA: PTK derivation - A1=" MACSTR " A2=" MACSTR,
- MAC2STR(addr1), MAC2STR(addr2));
- wpa_hexdump(MSG_DEBUG, "WPA: Nonce1", nonce1, WPA_NONCE_LEN);
- wpa_hexdump(MSG_DEBUG, "WPA: Nonce2", nonce2, WPA_NONCE_LEN);
- wpa_hexdump_key(MSG_DEBUG, "WPA: PMK", pmk, pmk_len);
- wpa_hexdump_key(MSG_DEBUG, "WPA: PTK", tmp, ptk_len);
-
- os_memcpy(ptk->kck, tmp, ptk->kck_len);
- wpa_hexdump_key(MSG_DEBUG, "WPA: KCK", ptk->kck, ptk->kck_len);
-
- os_memcpy(ptk->kek, tmp + ptk->kck_len, ptk->kek_len);
- wpa_hexdump_key(MSG_DEBUG, "WPA: KEK", ptk->kek, ptk->kek_len);
-
- os_memcpy(ptk->tk, tmp + ptk->kck_len + ptk->kek_len, ptk->tk_len);
- wpa_hexdump_key(MSG_DEBUG, "WPA: TK", ptk->tk, ptk->tk_len);
-
- os_memset(tmp, 0, sizeof(tmp));
- return 0;
-}
-
-
-#ifdef CONFIG_IEEE80211R
-int wpa_ft_mic(const u8 *kck, size_t kck_len, 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)
-{
- const u8 *addr[9];
- size_t len[9];
- size_t i, num_elem = 0;
- u8 zero_mic[16];
-
- if (kck_len != 16) {
- wpa_printf(MSG_WARNING, "FT: Unsupported KCK length %u",
- (unsigned int) kck_len);
- return -1;
- }
-
- addr[num_elem] = sta_addr;
- len[num_elem] = ETH_ALEN;
- num_elem++;
-
- addr[num_elem] = ap_addr;
- len[num_elem] = ETH_ALEN;
- num_elem++;
-
- addr[num_elem] = &transaction_seqnum;
- len[num_elem] = 1;
- num_elem++;
-
- if (rsnie) {
- addr[num_elem] = rsnie;
- len[num_elem] = rsnie_len;
- num_elem++;
- }
- if (mdie) {
- addr[num_elem] = mdie;
- len[num_elem] = mdie_len;
- num_elem++;
- }
- if (ftie) {
- if (ftie_len < 2 + sizeof(struct rsn_ftie))
- return -1;
-
- /* IE hdr and mic_control */
- addr[num_elem] = ftie;
- len[num_elem] = 2 + 2;
- num_elem++;
-
- /* MIC field with all zeros */
- os_memset(zero_mic, 0, sizeof(zero_mic));
- addr[num_elem] = zero_mic;
- len[num_elem] = sizeof(zero_mic);
- num_elem++;
-
- /* Rest of FTIE */
- addr[num_elem] = ftie + 2 + 2 + 16;
- len[num_elem] = ftie_len - (2 + 2 + 16);
- num_elem++;
- }
- if (ric) {
- addr[num_elem] = ric;
- len[num_elem] = ric_len;
- num_elem++;
- }
-
- for (i = 0; i < num_elem; i++)
- wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", addr[i], len[i]);
- if (omac1_aes_128_vector(kck, num_elem, addr, len, mic))
- return -1;
-
- return 0;
-}
-
-
-static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
- struct wpa_ft_ies *parse)
-{
- const u8 *end, *pos;
-
- parse->ftie = ie;
- parse->ftie_len = ie_len;
-
- pos = ie + sizeof(struct rsn_ftie);
- end = ie + ie_len;
-
- while (end - pos >= 2) {
- u8 id, len;
-
- id = *pos++;
- len = *pos++;
- if (len > end - pos)
- break;
-
- switch (id) {
- case FTIE_SUBELEM_R1KH_ID:
- if (len != FT_R1KH_ID_LEN) {
- wpa_printf(MSG_DEBUG,
- "FT: Invalid R1KH-ID length in FTIE: %d",
- len);
- return -1;
- }
- parse->r1kh_id = pos;
- break;
- case FTIE_SUBELEM_GTK:
- parse->gtk = pos;
- parse->gtk_len = len;
- break;
- case FTIE_SUBELEM_R0KH_ID:
- if (len < 1 || len > FT_R0KH_ID_MAX_LEN) {
- wpa_printf(MSG_DEBUG,
- "FT: Invalid R0KH-ID length in FTIE: %d",
- len);
- return -1;
- }
- parse->r0kh_id = pos;
- parse->r0kh_id_len = len;
- break;
-#ifdef CONFIG_IEEE80211W
- case FTIE_SUBELEM_IGTK:
- parse->igtk = pos;
- parse->igtk_len = len;
- break;
-#endif /* CONFIG_IEEE80211W */
- }
-
- pos += len;
- }
-
- return 0;
-}
-
-
-int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
- struct wpa_ft_ies *parse)
-{
- const u8 *end, *pos;
- struct wpa_ie_data data;
- int ret;
- const struct rsn_ftie *ftie;
- int prot_ie_count = 0;
-
- os_memset(parse, 0, sizeof(*parse));
- if (ies == NULL)
- return 0;
-
- pos = ies;
- end = ies + ies_len;
- while (end - pos >= 2) {
- u8 id, len;
-
- id = *pos++;
- len = *pos++;
- if (len > end - pos)
- break;
-
- switch (id) {
- case WLAN_EID_RSN:
- parse->rsn = pos;
- parse->rsn_len = len;
- ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
- parse->rsn_len + 2,
- &data);
- if (ret < 0) {
- wpa_printf(MSG_DEBUG, "FT: Failed to parse "
- "RSN IE: %d", ret);
- return -1;
- }
- if (data.num_pmkid == 1 && data.pmkid)
- parse->rsn_pmkid = data.pmkid;
- break;
- case WLAN_EID_MOBILITY_DOMAIN:
- if (len < sizeof(struct rsn_mdie))
- return -1;
- parse->mdie = pos;
- parse->mdie_len = len;
- break;
- case WLAN_EID_FAST_BSS_TRANSITION:
- if (len < sizeof(*ftie))
- return -1;
- ftie = (const struct rsn_ftie *) pos;
- prot_ie_count = ftie->mic_control[1];
- if (wpa_ft_parse_ftie(pos, len, parse) < 0)
- return -1;
- break;
- case WLAN_EID_TIMEOUT_INTERVAL:
- if (len != 5)
- break;
- parse->tie = pos;
- parse->tie_len = len;
- break;
- case WLAN_EID_RIC_DATA:
- if (parse->ric == NULL)
- parse->ric = pos - 2;
- break;
- }
-
- pos += len;
- }
-
- if (prot_ie_count == 0)
- return 0; /* no MIC */
-
- /*
- * Check that the protected IE count matches with IEs included in the
- * frame.
- */
- if (parse->rsn)
- prot_ie_count--;
- if (parse->mdie)
- prot_ie_count--;
- if (parse->ftie)
- prot_ie_count--;
- if (prot_ie_count < 0) {
- wpa_printf(MSG_DEBUG, "FT: Some required IEs not included in "
- "the protected IE count");
- return -1;
- }
-
- if (prot_ie_count == 0 && parse->ric) {
- wpa_printf(MSG_DEBUG, "FT: RIC IE(s) in the frame, but not "
- "included in protected IE count");
- return -1;
- }
-
- /* Determine the end of the RIC IE(s) */
- if (parse->ric) {
- pos = parse->ric;
- while (end - pos >= 2 && 2 + pos[1] <= end - pos &&
- prot_ie_count) {
- prot_ie_count--;
- pos += 2 + pos[1];
- }
- parse->ric_len = pos - parse->ric;
- }
- if (prot_ie_count) {
- wpa_printf(MSG_DEBUG, "FT: %d protected IEs missing from "
- "frame", (int) prot_ie_count);
- return -1;
- }
-
- return 0;
-}
-#endif /* CONFIG_IEEE80211R */
-
-
-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_TKIP)
- return WPA_CIPHER_TKIP;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP)
- return WPA_CIPHER_CCMP;
-#ifdef CONFIG_IEEE80211W
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
- return WPA_CIPHER_AES_128_CMAC;
-#endif /* CONFIG_IEEE80211W */
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP)
- return WPA_CIPHER_GCMP;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_CCMP_256)
- return WPA_CIPHER_CCMP_256;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP_256)
- return WPA_CIPHER_GCMP_256;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_128)
- return WPA_CIPHER_BIP_GMAC_128;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_GMAC_256)
- return WPA_CIPHER_BIP_GMAC_256;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_BIP_CMAC_256)
- return WPA_CIPHER_BIP_CMAC_256;
- if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED)
- return WPA_CIPHER_GTK_NOT_USED;
- 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 */
-#ifdef CONFIG_SAE
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_SAE)
- return WPA_KEY_MGMT_SAE;
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_SAE)
- return WPA_KEY_MGMT_FT_SAE;
-#endif /* CONFIG_SAE */
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B)
- return WPA_KEY_MGMT_IEEE8021X_SUITE_B;
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192)
- return WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
- if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_OSEN)
- return WPA_KEY_MGMT_OSEN;
- return 0;
-}
-
-
-int wpa_cipher_valid_group(int cipher)
-{
- return wpa_cipher_valid_pairwise(cipher) ||
- cipher == WPA_CIPHER_GTK_NOT_USED;
-}
-
-
-#ifdef CONFIG_IEEE80211W
-int wpa_cipher_valid_mgmt_group(int cipher)
-{
- return cipher == WPA_CIPHER_AES_128_CMAC ||
- cipher == WPA_CIPHER_BIP_GMAC_128 ||
- cipher == WPA_CIPHER_BIP_GMAC_256 ||
- cipher == WPA_CIPHER_BIP_CMAC_256;
-}
-#endif /* CONFIG_IEEE80211W */
-
-
-/**
- * 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)
-{
- 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;
- }
-
- if (rsn_ie_len >= 6 && rsn_ie[1] >= 4 &&
- rsn_ie[1] == rsn_ie_len - 2 &&
- WPA_GET_BE32(&rsn_ie[2]) == OSEN_IE_VENDOR_TYPE) {
- pos = rsn_ie + 6;
- left = rsn_ie_len - 6;
-
- data->proto = WPA_PROTO_OSEN;
- } else {
- const struct rsn_ie_hdr *hdr;
-
- 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);
- if (!wpa_cipher_valid_group(data->group_cipher)) {
- wpa_printf(MSG_DEBUG,
- "%s: invalid group cipher 0x%x (%08x)",
- __func__, data->group_cipher,
- WPA_GET_BE32(pos));
- return -1;
- }
- 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 || count > left / 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 || count > left / 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) {
- u16 num_pmkid = WPA_GET_LE16(pos);
- pos += 2;
- left -= 2;
- if (num_pmkid > (unsigned int) left / PMKID_LEN) {
- wpa_printf(MSG_DEBUG, "%s: PMKID underflow "
- "(num_pmkid=%u left=%d)",
- __func__, num_pmkid, left);
- data->num_pmkid = 0;
- return -9;
- } else {
- data->num_pmkid = num_pmkid;
- 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 (!wpa_cipher_valid_mgmt_group(data->mgmt_group_cipher)) {
- wpa_printf(MSG_DEBUG,
- "%s: Unsupported management group cipher 0x%x (%08x)",
- __func__, data->mgmt_group_cipher,
- WPA_GET_BE32(pos));
- return -10;
- }
- pos += RSN_SELECTOR_LEN;
- left -= RSN_SELECTOR_LEN;
- }
-#endif /* CONFIG_IEEE80211W */
-
- if (left > 0) {
- wpa_hexdump(MSG_DEBUG,
- "wpa_parse_wpa_ie_rsn: ignore trailing bytes",
- pos, left);
- }
-
- return 0;
-}
-
-
-static int wpa_selector_to_bitfield(const u8 *s)
-{
- if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_NONE)
- return WPA_CIPHER_NONE;
- if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_TKIP)
- return WPA_CIPHER_TKIP;
- if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_CCMP)
- return WPA_CIPHER_CCMP;
- return 0;
-}
-
-
-static int wpa_key_mgmt_to_bitfield(const u8 *s)
-{
- if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_UNSPEC_802_1X)
- return WPA_KEY_MGMT_IEEE8021X;
- if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X)
- return WPA_KEY_MGMT_PSK;
- if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_NONE)
- return WPA_KEY_MGMT_WPA_NONE;
- return 0;
-}
-
-
-int wpa_parse_wpa_ie_wpa(const u8 *wpa_ie, size_t wpa_ie_len,
- struct wpa_ie_data *data)
-{
- const struct wpa_ie_hdr *hdr;
- const u8 *pos;
- int left;
- int i, count;
-
- os_memset(data, 0, sizeof(*data));
- data->proto = WPA_PROTO_WPA;
- data->pairwise_cipher = WPA_CIPHER_TKIP;
- data->group_cipher = WPA_CIPHER_TKIP;
- data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
- data->capabilities = 0;
- data->pmkid = NULL;
- data->num_pmkid = 0;
- data->mgmt_group_cipher = 0;
-
- if (wpa_ie_len < sizeof(struct wpa_ie_hdr)) {
- wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
- __func__, (unsigned long) wpa_ie_len);
- return -1;
- }
-
- hdr = (const struct wpa_ie_hdr *) wpa_ie;
-
- if (hdr->elem_id != WLAN_EID_VENDOR_SPECIFIC ||
- hdr->len != wpa_ie_len - 2 ||
- RSN_SELECTOR_GET(hdr->oui) != WPA_OUI_TYPE ||
- WPA_GET_LE16(hdr->version) != WPA_VERSION) {
- wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
- __func__);
- return -2;
- }
-
- pos = (const u8 *) (hdr + 1);
- left = wpa_ie_len - sizeof(*hdr);
-
- if (left >= WPA_SELECTOR_LEN) {
- data->group_cipher = wpa_selector_to_bitfield(pos);
- pos += WPA_SELECTOR_LEN;
- left -= WPA_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 || count > left / WPA_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 |= wpa_selector_to_bitfield(pos);
- pos += WPA_SELECTOR_LEN;
- left -= WPA_SELECTOR_LEN;
- }
- } 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 || count > left / WPA_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 |= wpa_key_mgmt_to_bitfield(pos);
- pos += WPA_SELECTOR_LEN;
- left -= WPA_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 > 0) {
- wpa_hexdump(MSG_DEBUG,
- "wpa_parse_wpa_ie_wpa: ignore trailing bytes",
- pos, left);
- }
-
- return 0;
-}
-
-
-#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 + SSID_MAX_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 > SSID_MAX_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
- */
-int 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,
- struct wpa_ptk *ptk, u8 *ptk_name, int akmp, int cipher)
-{
- u8 buf[2 * WPA_NONCE_LEN + 2 * ETH_ALEN];
- u8 *pos, hash[32];
- const u8 *addr[6];
- size_t len[6];
- u8 tmp[WPA_KCK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN];
- size_t ptk_len;
-
- /*
- * 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;
-
- ptk->kck_len = wpa_kck_len(akmp);
- ptk->kek_len = wpa_kek_len(akmp);
- ptk->tk_len = wpa_cipher_key_len(cipher);
- ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len;
-
- sha256_prf(pmk_r1, PMK_LEN, "FT-PTK", buf, pos - buf, tmp, 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);
-
- os_memcpy(ptk->kck, tmp, ptk->kck_len);
- os_memcpy(ptk->kek, tmp + ptk->kck_len, ptk->kek_len);
- os_memcpy(ptk->tk, tmp + ptk->kck_len + ptk->kek_len, ptk->tk_len);
-
- wpa_hexdump_key(MSG_DEBUG, "FT: KCK", ptk->kck, ptk->kck_len);
- wpa_hexdump_key(MSG_DEBUG, "FT: KEK", ptk->kek, ptk->kek_len);
- wpa_hexdump_key(MSG_DEBUG, "FT: TK", ptk->tk, ptk->tk_len);
- wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
-
- os_memset(tmp, 0, sizeof(tmp));
-
- return 0;
-}
-
-#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);
-}
-
-
-#ifdef CONFIG_SUITEB
-/**
- * rsn_pmkid_suite_b - Calculate PMK identifier for Suite B AKM
- * @kck: Key confirmation key
- * @kck_len: Length of kck in bytes
- * @aa: Authenticator address
- * @spa: Supplicant address
- * @pmkid: Buffer for PMKID
- * Returns: 0 on success, -1 on failure
- *
- * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
- * PMKID = Truncate(HMAC-SHA-256(KCK, "PMK Name" || AA || SPA))
- */
-int rsn_pmkid_suite_b(const u8 *kck, size_t kck_len, const u8 *aa,
- const u8 *spa, u8 *pmkid)
-{
- 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;
-
- if (hmac_sha256_vector(kck, kck_len, 3, addr, len, hash) < 0)
- return -1;
- os_memcpy(pmkid, hash, PMKID_LEN);
- return 0;
-}
-#endif /* CONFIG_SUITEB */
-
-
-#ifdef CONFIG_SUITEB192
-/**
- * rsn_pmkid_suite_b_192 - Calculate PMK identifier for Suite B AKM
- * @kck: Key confirmation key
- * @kck_len: Length of kck in bytes
- * @aa: Authenticator address
- * @spa: Supplicant address
- * @pmkid: Buffer for PMKID
- * Returns: 0 on success, -1 on failure
- *
- * IEEE Std 802.11ac-2013 - 11.6.1.3 Pairwise key hierarchy
- * PMKID = Truncate(HMAC-SHA-384(KCK, "PMK Name" || AA || SPA))
- */
-int rsn_pmkid_suite_b_192(const u8 *kck, size_t kck_len, const u8 *aa,
- const u8 *spa, u8 *pmkid)
-{
- char *title = "PMK Name";
- const u8 *addr[3];
- const size_t len[3] = { 8, ETH_ALEN, ETH_ALEN };
- unsigned char hash[SHA384_MAC_LEN];
-
- addr[0] = (u8 *) title;
- addr[1] = aa;
- addr[2] = spa;
-
- if (hmac_sha384_vector(kck, kck_len, 3, addr, len, hash) < 0)
- return -1;
- os_memcpy(pmkid, hash, PMKID_LEN);
- return 0;
-}
-#endif /* CONFIG_SUITEB192 */
-
-
-/**
- * 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";
- case WPA_CIPHER_GCMP:
- return "GCMP";
- case WPA_CIPHER_GCMP_256:
- return "GCMP-256";
- case WPA_CIPHER_CCMP_256:
- return "CCMP-256";
- case WPA_CIPHER_GTK_NOT_USED:
- return "GTK_NOT_USED";
- 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_WPA_NONE:
- return "WPA-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 */
- case WPA_KEY_MGMT_WPS:
- return "WPS";
- case WPA_KEY_MGMT_SAE:
- return "SAE";
- case WPA_KEY_MGMT_FT_SAE:
- return "FT-SAE";
- case WPA_KEY_MGMT_OSEN:
- return "OSEN";
- case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
- return "WPA2-EAP-SUITE-B";
- case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
- return "WPA2-EAP-SUITE-B-192";
- default:
- return "UNKNOWN";
- }
-}
-
-
-u32 wpa_akm_to_suite(int akm)
-{
- if (akm & WPA_KEY_MGMT_FT_IEEE8021X)
- return WLAN_AKM_SUITE_FT_8021X;
- if (akm & WPA_KEY_MGMT_FT_PSK)
- return WLAN_AKM_SUITE_FT_PSK;
- if (akm & WPA_KEY_MGMT_IEEE8021X)
- return WLAN_AKM_SUITE_8021X;
- if (akm & WPA_KEY_MGMT_IEEE8021X_SHA256)
- return WLAN_AKM_SUITE_8021X_SHA256;
- if (akm & WPA_KEY_MGMT_IEEE8021X)
- return WLAN_AKM_SUITE_8021X;
- if (akm & WPA_KEY_MGMT_PSK_SHA256)
- return WLAN_AKM_SUITE_PSK_SHA256;
- if (akm & WPA_KEY_MGMT_PSK)
- return WLAN_AKM_SUITE_PSK;
- if (akm & WPA_KEY_MGMT_CCKM)
- return WLAN_AKM_SUITE_CCKM;
- if (akm & WPA_KEY_MGMT_OSEN)
- return WLAN_AKM_SUITE_OSEN;
- if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B)
- return WLAN_AKM_SUITE_8021X_SUITE_B;
- if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
- return WLAN_AKM_SUITE_8021X_SUITE_B_192;
- return 0;
-}
-
-
-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;
- added += 2;
- start[1] += 2;
- rend = rpos;
- } 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 + added - rpos);
- WPA_PUT_LE16(rpos, 1);
- rpos += 2;
- os_memcpy(rpos, pmkid, PMKID_LEN);
- added += 2 + PMKID_LEN;
- start[1] += 2 + PMKID_LEN;
- } else {
- u16 num_pmkid;
-
- if (rend - rpos < 2)
- return -1;
- num_pmkid = WPA_GET_LE16(rpos);
- /* PMKID-Count was included; use it */
- if (num_pmkid != 0) {
- u8 *after;
-
- if (num_pmkid * PMKID_LEN > rend - rpos - 2)
- return -1;
- /*
- * PMKID may have been included in RSN IE in
- * (Re)Association Request frame, so remove the old
- * PMKID(s) first before adding the new one.
- */
- wpa_printf(MSG_DEBUG,
- "FT: Remove %u old PMKID(s) from RSN IE",
- num_pmkid);
- after = rpos + 2 + num_pmkid * PMKID_LEN;
- os_memmove(rpos + 2, after, rend - after);
- start[1] -= num_pmkid * PMKID_LEN;
- added -= num_pmkid * PMKID_LEN;
- }
- WPA_PUT_LE16(rpos, 1);
- rpos += 2;
- os_memmove(rpos + PMKID_LEN, rpos, end + added - 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]);
-
- *ies_len += added;
-
- return 0;
-}
-#endif /* CONFIG_IEEE80211R */
-
-
-int wpa_cipher_key_len(int cipher)
-{
- switch (cipher) {
- case WPA_CIPHER_CCMP_256:
- case WPA_CIPHER_GCMP_256:
- case WPA_CIPHER_BIP_GMAC_256:
- case WPA_CIPHER_BIP_CMAC_256:
- return 32;
- case WPA_CIPHER_CCMP:
- case WPA_CIPHER_GCMP:
- case WPA_CIPHER_AES_128_CMAC:
- case WPA_CIPHER_BIP_GMAC_128:
- return 16;
- case WPA_CIPHER_TKIP:
- return 32;
- }
-
- return 0;
-}
-
-
-int wpa_cipher_rsc_len(int cipher)
-{
- switch (cipher) {
- case WPA_CIPHER_CCMP_256:
- case WPA_CIPHER_GCMP_256:
- case WPA_CIPHER_CCMP:
- case WPA_CIPHER_GCMP:
- case WPA_CIPHER_TKIP:
- return 6;
- }
-
- return 0;
-}
-
-
-int wpa_cipher_to_alg(int cipher)
-{
- switch (cipher) {
- case WPA_CIPHER_CCMP_256:
- return WPA_ALG_CCMP_256;
- case WPA_CIPHER_GCMP_256:
- return WPA_ALG_GCMP_256;
- case WPA_CIPHER_CCMP:
- return WPA_ALG_CCMP;
- case WPA_CIPHER_GCMP:
- return WPA_ALG_GCMP;
- case WPA_CIPHER_TKIP:
- return WPA_ALG_TKIP;
- case WPA_CIPHER_AES_128_CMAC:
- return WPA_ALG_IGTK;
- case WPA_CIPHER_BIP_GMAC_128:
- return WPA_ALG_BIP_GMAC_128;
- case WPA_CIPHER_BIP_GMAC_256:
- return WPA_ALG_BIP_GMAC_256;
- case WPA_CIPHER_BIP_CMAC_256:
- return WPA_ALG_BIP_CMAC_256;
- }
- return WPA_ALG_NONE;
-}
-
-
-int wpa_cipher_valid_pairwise(int cipher)
-{
- return cipher == WPA_CIPHER_CCMP_256 ||
- cipher == WPA_CIPHER_GCMP_256 ||
- cipher == WPA_CIPHER_CCMP ||
- cipher == WPA_CIPHER_GCMP ||
- cipher == WPA_CIPHER_TKIP;
-}
-
-
-u32 wpa_cipher_to_suite(int proto, int cipher)
-{
- if (cipher & WPA_CIPHER_CCMP_256)
- return RSN_CIPHER_SUITE_CCMP_256;
- if (cipher & WPA_CIPHER_GCMP_256)
- return RSN_CIPHER_SUITE_GCMP_256;
- if (cipher & WPA_CIPHER_CCMP)
- return (proto == WPA_PROTO_RSN ?
- RSN_CIPHER_SUITE_CCMP : WPA_CIPHER_SUITE_CCMP);
- if (cipher & WPA_CIPHER_GCMP)
- return RSN_CIPHER_SUITE_GCMP;
- if (cipher & WPA_CIPHER_TKIP)
- return (proto == WPA_PROTO_RSN ?
- RSN_CIPHER_SUITE_TKIP : WPA_CIPHER_SUITE_TKIP);
- if (cipher & WPA_CIPHER_NONE)
- return (proto == WPA_PROTO_RSN ?
- RSN_CIPHER_SUITE_NONE : WPA_CIPHER_SUITE_NONE);
- if (cipher & WPA_CIPHER_GTK_NOT_USED)
- return RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED;
- if (cipher & WPA_CIPHER_AES_128_CMAC)
- return RSN_CIPHER_SUITE_AES_128_CMAC;
- if (cipher & WPA_CIPHER_BIP_GMAC_128)
- return RSN_CIPHER_SUITE_BIP_GMAC_128;
- if (cipher & WPA_CIPHER_BIP_GMAC_256)
- return RSN_CIPHER_SUITE_BIP_GMAC_256;
- if (cipher & WPA_CIPHER_BIP_CMAC_256)
- return RSN_CIPHER_SUITE_BIP_CMAC_256;
- return 0;
-}
-
-
-int rsn_cipher_put_suites(u8 *start, int ciphers)
-{
- u8 *pos = start;
-
- if (ciphers & WPA_CIPHER_CCMP_256) {
- RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP_256);
- pos += RSN_SELECTOR_LEN;
- }
- if (ciphers & WPA_CIPHER_GCMP_256) {
- RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP_256);
- pos += RSN_SELECTOR_LEN;
- }
- if (ciphers & WPA_CIPHER_CCMP) {
- RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP);
- pos += RSN_SELECTOR_LEN;
- }
- if (ciphers & WPA_CIPHER_GCMP) {
- RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP);
- pos += RSN_SELECTOR_LEN;
- }
- if (ciphers & WPA_CIPHER_TKIP) {
- RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_TKIP);
- pos += RSN_SELECTOR_LEN;
- }
- if (ciphers & WPA_CIPHER_NONE) {
- RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NONE);
- pos += RSN_SELECTOR_LEN;
- }
-
- return (pos - start) / RSN_SELECTOR_LEN;
-}
-
-
-int wpa_cipher_put_suites(u8 *start, int ciphers)
-{
- u8 *pos = start;
-
- if (ciphers & WPA_CIPHER_CCMP) {
- RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_CCMP);
- pos += WPA_SELECTOR_LEN;
- }
- if (ciphers & WPA_CIPHER_TKIP) {
- RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_TKIP);
- pos += WPA_SELECTOR_LEN;
- }
- if (ciphers & WPA_CIPHER_NONE) {
- RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_NONE);
- pos += WPA_SELECTOR_LEN;
- }
-
- return (pos - start) / RSN_SELECTOR_LEN;
-}
-
-
-int wpa_pick_pairwise_cipher(int ciphers, int none_allowed)
-{
- if (ciphers & WPA_CIPHER_CCMP_256)
- return WPA_CIPHER_CCMP_256;
- if (ciphers & WPA_CIPHER_GCMP_256)
- return WPA_CIPHER_GCMP_256;
- if (ciphers & WPA_CIPHER_CCMP)
- return WPA_CIPHER_CCMP;
- if (ciphers & WPA_CIPHER_GCMP)
- return WPA_CIPHER_GCMP;
- if (ciphers & WPA_CIPHER_TKIP)
- return WPA_CIPHER_TKIP;
- if (none_allowed && (ciphers & WPA_CIPHER_NONE))
- return WPA_CIPHER_NONE;
- return -1;
-}
-
-
-int wpa_pick_group_cipher(int ciphers)
-{
- if (ciphers & WPA_CIPHER_CCMP_256)
- return WPA_CIPHER_CCMP_256;
- if (ciphers & WPA_CIPHER_GCMP_256)
- return WPA_CIPHER_GCMP_256;
- if (ciphers & WPA_CIPHER_CCMP)
- return WPA_CIPHER_CCMP;
- if (ciphers & WPA_CIPHER_GCMP)
- return WPA_CIPHER_GCMP;
- if (ciphers & WPA_CIPHER_GTK_NOT_USED)
- return WPA_CIPHER_GTK_NOT_USED;
- if (ciphers & WPA_CIPHER_TKIP)
- return WPA_CIPHER_TKIP;
- return -1;
-}
-
-
-int wpa_parse_cipher(const char *value)
-{
- int val = 0, last;
- char *start, *end, *buf;
-
- buf = os_strdup(value);
- if (buf == NULL)
- return -1;
- start = buf;
-
- while (*start != '\0') {
- while (*start == ' ' || *start == '\t')
- start++;
- if (*start == '\0')
- break;
- end = start;
- while (*end != ' ' && *end != '\t' && *end != '\0')
- end++;
- last = *end == '\0';
- *end = '\0';
- if (os_strcmp(start, "CCMP-256") == 0)
- val |= WPA_CIPHER_CCMP_256;
- else if (os_strcmp(start, "GCMP-256") == 0)
- val |= WPA_CIPHER_GCMP_256;
- else if (os_strcmp(start, "CCMP") == 0)
- val |= WPA_CIPHER_CCMP;
- else if (os_strcmp(start, "GCMP") == 0)
- val |= WPA_CIPHER_GCMP;
- else if (os_strcmp(start, "TKIP") == 0)
- val |= WPA_CIPHER_TKIP;
- else if (os_strcmp(start, "WEP104") == 0)
- val |= WPA_CIPHER_WEP104;
- else if (os_strcmp(start, "WEP40") == 0)
- val |= WPA_CIPHER_WEP40;
- else if (os_strcmp(start, "NONE") == 0)
- val |= WPA_CIPHER_NONE;
- else if (os_strcmp(start, "GTK_NOT_USED") == 0)
- val |= WPA_CIPHER_GTK_NOT_USED;
- else {
- os_free(buf);
- return -1;
- }
-
- if (last)
- break;
- start = end + 1;
- }
- os_free(buf);
-
- return val;
-}
-
-
-int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim)
-{
- char *pos = start;
- int ret;
-
- if (ciphers & WPA_CIPHER_CCMP_256) {
- ret = os_snprintf(pos, end - pos, "%sCCMP-256",
- pos == start ? "" : delim);
- if (os_snprintf_error(end - pos, ret))
- return -1;
- pos += ret;
- }
- if (ciphers & WPA_CIPHER_GCMP_256) {
- ret = os_snprintf(pos, end - pos, "%sGCMP-256",
- pos == start ? "" : delim);
- if (os_snprintf_error(end - pos, ret))
- return -1;
- pos += ret;
- }
- if (ciphers & WPA_CIPHER_CCMP) {
- ret = os_snprintf(pos, end - pos, "%sCCMP",
- pos == start ? "" : delim);
- if (os_snprintf_error(end - pos, ret))
- return -1;
- pos += ret;
- }
- if (ciphers & WPA_CIPHER_GCMP) {
- ret = os_snprintf(pos, end - pos, "%sGCMP",
- pos == start ? "" : delim);
- if (os_snprintf_error(end - pos, ret))
- return -1;
- pos += ret;
- }
- if (ciphers & WPA_CIPHER_TKIP) {
- ret = os_snprintf(pos, end - pos, "%sTKIP",
- pos == start ? "" : delim);
- if (os_snprintf_error(end - pos, ret))
- return -1;
- pos += ret;
- }
- if (ciphers & WPA_CIPHER_NONE) {
- ret = os_snprintf(pos, end - pos, "%sNONE",
- pos == start ? "" : delim);
- if (os_snprintf_error(end - pos, ret))
- return -1;
- pos += ret;
- }
-
- return pos - start;
-}
-
-
-int wpa_select_ap_group_cipher(int wpa, int wpa_pairwise, int rsn_pairwise)
-{
- int pairwise = 0;
-
- /* Select group cipher based on the enabled pairwise cipher suites */
- if (wpa & 1)
- pairwise |= wpa_pairwise;
- if (wpa & 2)
- pairwise |= rsn_pairwise;
-
- if (pairwise & WPA_CIPHER_TKIP)
- return WPA_CIPHER_TKIP;
- if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP)
- return WPA_CIPHER_GCMP;
- if ((pairwise & (WPA_CIPHER_GCMP_256 | WPA_CIPHER_CCMP |
- WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP_256)
- return WPA_CIPHER_GCMP_256;
- if ((pairwise & (WPA_CIPHER_CCMP_256 | WPA_CIPHER_CCMP |
- WPA_CIPHER_GCMP)) == WPA_CIPHER_CCMP_256)
- return WPA_CIPHER_CCMP_256;
- return WPA_CIPHER_CCMP;
-}
projects / mech_eap.git / blobdiff