/*
* WPA/RSN - Shared functions for supplicant and authenticator
- * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2002-2015, 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.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "includes.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 "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)
* 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)
+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[SHA1_MAC_LEN];
+ u8 hash[SHA384_MAC_LEN];
switch (ver) {
+#ifndef CONFIG_FIPS
case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
- return hmac_md5(key, 16, buf, len, mic);
+ return hmac_md5(key, key_len, buf, len, mic);
+#endif /* CONFIG_FIPS */
case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
- if (hmac_sha1(key, 16, buf, len, hash))
+ if (hmac_sha1(key, key_len, buf, len, hash))
return -1;
os_memcpy(mic, hash, MD5_MAC_LEN);
break;
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;
}
* @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
+ * @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(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)
+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);
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 (use_sha256)
+ if (wpa_key_mgmt_sha256(akmp))
sha256_prf(pmk, pmk_len, label, data, sizeof(data),
- ptk, ptk_len);
+ tmp, ptk_len);
else
#endif /* CONFIG_IEEE80211W */
- sha1_prf(pmk, pmk_len, label, data, sizeof(data), ptk,
- ptk_len);
+ 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", ptk, ptk_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, const u8 *sta_addr, const u8 *ap_addr,
- u8 transaction_seqnum, const u8 *mdie, size_t mdie_len,
+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)
{
- 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)
+ 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++;
- 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;
+ addr[num_elem] = rsnie;
+ len[num_elem] = rsnie_len;
+ num_elem++;
}
if (mdie) {
- os_memcpy(pos, mdie, mdie_len);
- pos += mdie_len;
+ addr[num_elem] = mdie;
+ len[num_elem] = mdie_len;
+ num_elem++;
}
if (ftie) {
- struct rsn_ftie *_ftie;
- os_memcpy(pos, ftie, ftie_len);
- if (ftie_len < 2 + sizeof(*_ftie)) {
- os_free(buf);
+ if (ftie_len < 2 + sizeof(struct rsn_ftie))
return -1;
- }
- _ftie = (struct rsn_ftie *) (pos + 2);
- os_memset(_ftie->mic, 0, sizeof(_ftie->mic));
- pos += ftie_len;
+
+ /* 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) {
- os_memcpy(pos, ric, ric_len);
- pos += ric_len;
+ addr[num_elem] = ric;
+ len[num_elem] = ric_len;
+ num_elem++;
}
- wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", buf, pos - buf);
- if (omac1_aes_128(kck, buf, pos - buf, mic)) {
- os_free(buf);
+ 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 (pos + 2 <= end && pos + 2 + pos[1] <= end) {
+ switch (pos[0]) {
+ case FTIE_SUBELEM_R1KH_ID:
+ if (pos[1] != FT_R1KH_ID_LEN) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid R1KH-ID "
+ "length in FTIE: %d", pos[1]);
+ return -1;
+ }
+ parse->r1kh_id = pos + 2;
+ break;
+ case FTIE_SUBELEM_GTK:
+ parse->gtk = pos + 2;
+ parse->gtk_len = pos[1];
+ break;
+ case FTIE_SUBELEM_R0KH_ID:
+ if (pos[1] < 1 || pos[1] > FT_R0KH_ID_MAX_LEN) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid R0KH-ID "
+ "length in FTIE: %d", pos[1]);
+ return -1;
+ }
+ parse->r0kh_id = pos + 2;
+ parse->r0kh_id_len = pos[1];
+ break;
+#ifdef CONFIG_IEEE80211W
+ case FTIE_SUBELEM_IGTK:
+ parse->igtk = pos + 2;
+ parse->igtk_len = pos[1];
+ break;
+#endif /* CONFIG_IEEE80211W */
+ }
+
+ pos += 2 + pos[1];
}
- os_free(buf);
+ 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 (pos + 2 <= end && pos + 2 + pos[1] <= end) {
+ switch (pos[0]) {
+ case WLAN_EID_RSN:
+ parse->rsn = pos + 2;
+ parse->rsn_len = pos[1];
+ 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 (pos[1] < sizeof(struct rsn_mdie))
+ return -1;
+ parse->mdie = pos + 2;
+ parse->mdie_len = pos[1];
+ break;
+ case WLAN_EID_FAST_BSS_TRANSITION:
+ if (pos[1] < sizeof(*ftie))
+ return -1;
+ ftie = (const struct rsn_ftie *) (pos + 2);
+ prot_ie_count = ftie->mic_control[1];
+ if (wpa_ft_parse_ftie(pos + 2, pos[1], parse) < 0)
+ return -1;
+ break;
+ case WLAN_EID_TIMEOUT_INTERVAL:
+ if (pos[1] != 5)
+ break;
+ parse->tie = pos + 2;
+ parse->tie_len = pos[1];
+ break;
+ case WLAN_EID_RIC_DATA:
+ if (parse->ric == NULL)
+ parse->ric = pos;
+ break;
+ }
+
+ pos += 2 + pos[1];
+ }
+
+ 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) */
+ pos = parse->ric;
+ while (pos && pos + 2 <= end && pos + 2 + pos[1] <= end &&
+ 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 */
-#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 */
+ 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;
}
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;
}
-#endif /* CONFIG_NO_WPA2 */
+
+
+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 */
/**
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;
return -1;
}
- hdr = (const struct rsn_ie_hdr *) rsn_ie;
+ 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;
- 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;
- }
+ data->proto = WPA_PROTO_OSEN;
+ } else {
+ const struct rsn_ie_hdr *hdr;
- pos = (const u8 *) (hdr + 1);
- left = rsn_ie_len - sizeof(*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);
-#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__);
+ if (!wpa_cipher_valid_group(data->group_cipher)) {
+ wpa_printf(MSG_DEBUG, "%s: invalid group cipher 0x%x",
+ __func__, data->group_cipher);
return -1;
}
-#endif /* CONFIG_IEEE80211W */
pos += RSN_SELECTOR_LEN;
left -= RSN_SELECTOR_LEN;
} else if (left > 0) {
count = WPA_GET_LE16(pos);
pos += 2;
left -= 2;
- if (count == 0 || left < count * RSN_SELECTOR_LEN) {
+ 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;
count = WPA_GET_LE16(pos);
pos += 2;
left -= 2;
- if (count == 0 || left < count * RSN_SELECTOR_LEN) {
+ 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;
}
if (left >= 2) {
- data->num_pmkid = WPA_GET_LE16(pos);
+ u16 num_pmkid = WPA_GET_LE16(pos);
pos += 2;
left -= 2;
- if (left < (int) data->num_pmkid * PMKID_LEN) {
+ if (num_pmkid > (unsigned int) left / PMKID_LEN) {
wpa_printf(MSG_DEBUG, "%s: PMKID underflow "
- "(num_pmkid=%lu left=%d)",
- __func__, (unsigned long) data->num_pmkid,
- left);
+ "(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 (data->mgmt_group_cipher != WPA_CIPHER_AES_128_CMAC) {
+ if (!wpa_cipher_valid_mgmt_group(data->mgmt_group_cipher)) {
wpa_printf(MSG_DEBUG, "%s: Unsupported management "
"group cipher 0x%x", __func__,
data->mgmt_group_cipher);
#endif /* CONFIG_IEEE80211W */
if (left > 0) {
- wpa_printf(MSG_DEBUG, "%s: ie has %u trailing bytes - ignored",
+ 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;
-#else /* CONFIG_NO_WPA2 */
- return -1;
-#endif /* CONFIG_NO_WPA2 */
}
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 +
+ 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];
* 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)
+ if (ssid_len > SSID_MAX_LEN || r0kh_id_len > FT_R0KH_ID_MAX_LEN)
return;
pos = buf;
*pos++ = ssid_len;
*
* 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)
+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 ||
os_memcpy(pos, sta_addr, ETH_ALEN);
pos += ETH_ALEN;
- sha256_prf(pmk_r1, PMK_LEN, "FT-PTK", buf, pos - buf, ptk, ptk_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;
+
+ sha256_prf(pmk_r1, PMK_LEN, "FT-PTK", buf, pos - buf, tmp, ptk_len);
/*
* PTKName = Truncate-128(SHA-256(PMKR1Name || "FT-PTKN" || SNonce ||
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 */
}
+#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)
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";
}
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)
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) {
/* No PMKID-Count field included; add it */
- os_memmove(rpos + 2 + PMKID_LEN, rpos, end - rpos);
+ os_memmove(rpos + 2 + PMKID_LEN, rpos, end + added - rpos);
WPA_PUT_LE16(rpos, 1);
rpos += 2;
os_memcpy(rpos, pmkid, PMKID_LEN);
}
WPA_PUT_LE16(rpos, 1);
rpos += 2;
- os_memmove(rpos + PMKID_LEN, rpos, end - rpos);
+ os_memmove(rpos + PMKID_LEN, rpos, end + added - rpos);
os_memcpy(rpos, pmkid, PMKID_LEN);
added += PMKID_LEN;
start[1] += PMKID_LEN;
return added;
}
#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