text: /*
   * WPA/RSN - Shared functions for supplicant and authenticator
   * Copyright (c) 2002-2018, 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/sha512.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, size_t pmk_len)
  {
  	switch (akmp) {
  	case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
  	case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
  		return 24;
  	case WPA_KEY_MGMT_FILS_SHA256:
  	case WPA_KEY_MGMT_FT_FILS_SHA256:
  	case WPA_KEY_MGMT_FILS_SHA384:
  	case WPA_KEY_MGMT_FT_FILS_SHA384:
  		return 0;
  	case WPA_KEY_MGMT_DPP:
  		return pmk_len / 2;
  	case WPA_KEY_MGMT_OWE:
  		return pmk_len / 2;
  	default:
  		return 16;
  	}
  }
  
  
  #ifdef CONFIG_IEEE80211R
  static unsigned int wpa_kck2_len(int akmp)
  {
  	switch (akmp) {
  	case WPA_KEY_MGMT_FT_FILS_SHA256:
  		return 16;
  	case WPA_KEY_MGMT_FT_FILS_SHA384:
  		return 24;
  	default:
  		return 0;
  	}
  }
  #endif /* CONFIG_IEEE80211R */
  
  
  static unsigned int wpa_kek_len(int akmp, size_t pmk_len)
  {
  	switch (akmp) {
  	case WPA_KEY_MGMT_FILS_SHA384:
  	case WPA_KEY_MGMT_FT_FILS_SHA384:
  		return 64;
  	case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
  	case WPA_KEY_MGMT_FILS_SHA256:
  	case WPA_KEY_MGMT_FT_FILS_SHA256:
  	case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
  		return 32;
  	case WPA_KEY_MGMT_DPP:
  		return pmk_len <= 32 ? 16 : 32;
  	case WPA_KEY_MGMT_OWE:
  		return pmk_len <= 32 ? 16 : 32;
  	default:
  		return 16;
  	}
  }
  
  
  #ifdef CONFIG_IEEE80211R
  static unsigned int wpa_kek2_len(int akmp)
  {
  	switch (akmp) {
  	case WPA_KEY_MGMT_FT_FILS_SHA256:
  		return 16;
  	case WPA_KEY_MGMT_FT_FILS_SHA384:
  		return 32;
  	default:
  		return 0;
  	}
  }
  #endif /* CONFIG_IEEE80211R */
  
  
  unsigned int wpa_mic_len(int akmp, size_t pmk_len)
  {
  	switch (akmp) {
  	case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
  	case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
  		return 24;
  	case WPA_KEY_MGMT_FILS_SHA256:
  	case WPA_KEY_MGMT_FILS_SHA384:
  	case WPA_KEY_MGMT_FT_FILS_SHA256:
  	case WPA_KEY_MGMT_FT_FILS_SHA384:
  		return 0;
  	case WPA_KEY_MGMT_DPP:
  		return pmk_len / 2;
  	case WPA_KEY_MGMT_OWE:
  		return pmk_len / 2;
  	default:
  		return 16;
  	}
  }
  
  
  /**
   * wpa_use_akm_defined - Is AKM-defined Key Descriptor Version used
   * @akmp: WPA_KEY_MGMT_* used in key derivation
   * Returns: 1 if AKM-defined Key Descriptor Version is used; 0 otherwise
   */
  int wpa_use_akm_defined(int akmp)
  {
  	return akmp == WPA_KEY_MGMT_OSEN ||
  		akmp == WPA_KEY_MGMT_OWE ||
  		akmp == WPA_KEY_MGMT_DPP ||
  		akmp == WPA_KEY_MGMT_FT_IEEE8021X_SHA384 ||
  		wpa_key_mgmt_sae(akmp) ||
  		wpa_key_mgmt_suite_b(akmp) ||
  		wpa_key_mgmt_fils(akmp);
  }
  
  
  /**
   * wpa_use_cmac - Is CMAC integrity algorithm used for EAPOL-Key MIC
   * @akmp: WPA_KEY_MGMT_* used in key derivation
   * Returns: 1 if CMAC is used; 0 otherwise
   */
  int wpa_use_cmac(int akmp)
  {
  	return akmp == WPA_KEY_MGMT_OSEN ||
  		akmp == WPA_KEY_MGMT_OWE ||
  		akmp == WPA_KEY_MGMT_DPP ||
  		wpa_key_mgmt_ft(akmp) ||
  		wpa_key_mgmt_sha256(akmp) ||
  		wpa_key_mgmt_sae(akmp) ||
  		wpa_key_mgmt_suite_b(akmp);
  }
  
  
  /**
   * wpa_use_aes_key_wrap - Is AES Keywrap algorithm used for EAPOL-Key Key Data
   * @akmp: WPA_KEY_MGMT_* used in key derivation
   * Returns: 1 if AES Keywrap is used; 0 otherwise
   *
   * Note: AKM 00-0F-AC:1 and 00-0F-AC:2 have special rules for selecting whether
   * to use AES Keywrap based on the negotiated pairwise cipher. This function
   * does not cover those special cases.
   */
  int wpa_use_aes_key_wrap(int akmp)
  {
  	return akmp == WPA_KEY_MGMT_OSEN ||
  		akmp == WPA_KEY_MGMT_OWE ||
  		akmp == WPA_KEY_MGMT_DPP ||
  		wpa_key_mgmt_ft(akmp) ||
  		wpa_key_mgmt_sha256(akmp) ||
  		wpa_key_mgmt_sae(akmp) ||
  		wpa_key_mgmt_suite_b(akmp);
  }
  
  
  /**
   * 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[SHA512_MAC_LEN];
  
  	if (key_len == 0) {
  		wpa_printf(MSG_DEBUG,
  			   "WPA: KCK not set - cannot calculate MIC");
  		return -1;
  	}
  
  	switch (ver) {
  #ifndef CONFIG_FIPS
  	case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
  		wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key MIC using HMAC-MD5");
  		return hmac_md5(key, key_len, buf, len, mic);
  #endif /* CONFIG_FIPS */
  	case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
  		wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key MIC using HMAC-SHA1");
  		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:
  		wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key MIC using AES-CMAC");
  		return omac1_aes_128(key, buf, len, mic);
  	case WPA_KEY_INFO_TYPE_AKM_DEFINED:
  		switch (akmp) {
  #ifdef CONFIG_SAE
  		case WPA_KEY_MGMT_SAE:
  		case WPA_KEY_MGMT_FT_SAE:
  			wpa_printf(MSG_DEBUG,
  				   "WPA: EAPOL-Key MIC using AES-CMAC (AKM-defined - SAE)");
  			return omac1_aes_128(key, buf, len, mic);
  #endif /* CONFIG_SAE */
  #ifdef CONFIG_HS20
  		case WPA_KEY_MGMT_OSEN:
  			wpa_printf(MSG_DEBUG,
  				   "WPA: EAPOL-Key MIC using AES-CMAC (AKM-defined - OSEN)");
  			return omac1_aes_128(key, buf, len, mic);
  #endif /* CONFIG_HS20 */
  #ifdef CONFIG_SUITEB
  		case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
  			wpa_printf(MSG_DEBUG,
  				   "WPA: EAPOL-Key MIC using HMAC-SHA256 (AKM-defined - 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:
  			wpa_printf(MSG_DEBUG,
  				   "WPA: EAPOL-Key MIC using HMAC-SHA384 (AKM-defined - Suite B 192-bit)");
  			if (hmac_sha384(key, key_len, buf, len, hash))
  				return -1;
  			os_memcpy(mic, hash, 24);
  			break;
  #endif /* CONFIG_SUITEB192 */
  #ifdef CONFIG_OWE
  		case WPA_KEY_MGMT_OWE:
  			wpa_printf(MSG_DEBUG,
  				   "WPA: EAPOL-Key MIC using HMAC-SHA%u (AKM-defined - OWE)",
  				   (unsigned int) key_len * 8 * 2);
  			if (key_len == 128 / 8) {
  				if (hmac_sha256(key, key_len, buf, len, hash))
  					return -1;
  			} else if (key_len == 192 / 8) {
  				if (hmac_sha384(key, key_len, buf, len, hash))
  					return -1;
  			} else if (key_len == 256 / 8) {
  				if (hmac_sha512(key, key_len, buf, len, hash))
  					return -1;
  			} else {
  				wpa_printf(MSG_INFO,
  					   "OWE: Unsupported KCK length: %u",
  					   (unsigned int) key_len);
  				return -1;
  			}
  			os_memcpy(mic, hash, key_len);
  			break;
  #endif /* CONFIG_OWE */
  #ifdef CONFIG_DPP
  		case WPA_KEY_MGMT_DPP:
  			wpa_printf(MSG_DEBUG,
  				   "WPA: EAPOL-Key MIC using HMAC-SHA%u (AKM-defined - DPP)",
  				   (unsigned int) key_len * 8 * 2);
  			if (key_len == 128 / 8) {
  				if (hmac_sha256(key, key_len, buf, len, hash))
  					return -1;
  			} else if (key_len == 192 / 8) {
  				if (hmac_sha384(key, key_len, buf, len, hash))
  					return -1;
  			} else if (key_len == 256 / 8) {
  				if (hmac_sha512(key, key_len, buf, len, hash))
  					return -1;
  			} else {
  				wpa_printf(MSG_INFO,
  					   "DPP: Unsupported KCK length: %u",
  					   (unsigned int) key_len);
  				return -1;
  			}
  			os_memcpy(mic, hash, key_len);
  			break;
  #endif /* CONFIG_DPP */
  #if defined(CONFIG_IEEE80211R) && defined(CONFIG_SHA384)
  		case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
  			wpa_printf(MSG_DEBUG,
  				   "WPA: EAPOL-Key MIC using HMAC-SHA384 (AKM-defined - FT 802.1X SHA384)");
  			if (hmac_sha384(key, key_len, buf, len, hash))
  				return -1;
  			os_memcpy(mic, hash, 24);
  			break;
  #endif /* CONFIG_IEEE80211R && CONFIG_SHA384 */
  		default:
  			wpa_printf(MSG_DEBUG,
  				   "WPA: EAPOL-Key MIC algorithm not known (AKM-defined - akmp=0x%x)",
  				   akmp);
  			return -1;
  		}
  		break;
  	default:
  		wpa_printf(MSG_DEBUG,
  			   "WPA: EAPOL-Key MIC algorithm not known (ver=%d)",
  			   ver);
  		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
   * @kdk_len: The length in octets that should be derived for KDK
   * 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)
   *             [ || Z.x ])
   *
   * The optional Z.x component is used only with DPP and that part is not defined
   * in IEEE 802.11.
   */
  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,
  		   const u8 *z, size_t z_len, size_t kdk_len)
  {
  #define MAX_Z_LEN 66 /* with NIST P-521 */
  	u8 data[2 * ETH_ALEN + 2 * WPA_NONCE_LEN + MAX_Z_LEN];
  	size_t data_len = 2 * ETH_ALEN + 2 * WPA_NONCE_LEN;
  	u8 tmp[WPA_KCK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN +
  		WPA_KDK_MAX_LEN];
  	size_t ptk_len;
  #ifdef CONFIG_OWE
  	int owe_ptk_workaround = 0;
  
  	if (akmp == (WPA_KEY_MGMT_OWE | WPA_KEY_MGMT_PSK_SHA256)) {
  		owe_ptk_workaround = 1;
  		akmp = WPA_KEY_MGMT_OWE;
  	}
  #endif /* CONFIG_OWE */
  
  	if (pmk_len == 0) {
  		wpa_printf(MSG_ERROR, "WPA: No PMK set for PTK derivation");
  		return -1;
  	}
  
  	if (z_len > MAX_Z_LEN)
  		return -1;
  
  	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);
  	}
  
  	if (z && z_len) {
  		os_memcpy(data + 2 * ETH_ALEN + 2 * WPA_NONCE_LEN, z, z_len);
  		data_len += z_len;
  	}
  
  	if (kdk_len > WPA_KDK_MAX_LEN) {
  		wpa_printf(MSG_ERROR,
  			   "WPA: KDK len=%zu exceeds max supported len",
  			   kdk_len);
  		return -1;
  	}
  
  	ptk->kck_len = wpa_kck_len(akmp, pmk_len);
  	ptk->kek_len = wpa_kek_len(akmp, pmk_len);
  	ptk->tk_len = wpa_cipher_key_len(cipher);
  	ptk->kdk_len = kdk_len;
  	if (ptk->tk_len == 0) {
  		wpa_printf(MSG_ERROR,
  			   "WPA: Unsupported cipher (0x%x) used in PTK derivation",
  			   cipher);
  		return -1;
  	}
  	ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len + ptk->kdk_len;
  
  	if (wpa_key_mgmt_sha384(akmp)) {
  #if defined(CONFIG_SUITEB192) || defined(CONFIG_FILS)
  		wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA384)");
  		if (sha384_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, ptk_len) < 0)
  			return -1;
  #else /* CONFIG_SUITEB192 || CONFIG_FILS */
  		return -1;
  #endif /* CONFIG_SUITEB192 || CONFIG_FILS */
  	} else if (wpa_key_mgmt_sha256(akmp)) {
  		wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");
  		if (sha256_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, ptk_len) < 0)
  			return -1;
  #ifdef CONFIG_OWE
  	} else if (akmp == WPA_KEY_MGMT_OWE && (pmk_len == 32 ||
  						owe_ptk_workaround)) {
  		wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");
  		if (sha256_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, ptk_len) < 0)
  			return -1;
  	} else if (akmp == WPA_KEY_MGMT_OWE && pmk_len == 48) {
  		wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA384)");
  		if (sha384_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, ptk_len) < 0)
  			return -1;
  	} else if (akmp == WPA_KEY_MGMT_OWE && pmk_len == 64) {
  		wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA512)");
  		if (sha512_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, ptk_len) < 0)
  			return -1;
  	} else if (akmp == WPA_KEY_MGMT_OWE) {
  		wpa_printf(MSG_INFO, "OWE: Unknown PMK length %u",
  			   (unsigned int) pmk_len);
  		return -1;
  #endif /* CONFIG_OWE */
  #ifdef CONFIG_DPP
  	} else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 32) {
  		wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA256)");
  		if (sha256_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, ptk_len) < 0)
  			return -1;
  	} else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 48) {
  		wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA384)");
  		if (sha384_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, ptk_len) < 0)
  			return -1;
  	} else if (akmp == WPA_KEY_MGMT_DPP && pmk_len == 64) {
  		wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA512)");
  		if (sha512_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, ptk_len) < 0)
  			return -1;
  	} else if (akmp == WPA_KEY_MGMT_DPP) {
  		wpa_printf(MSG_INFO, "DPP: Unknown PMK length %u",
  			   (unsigned int) pmk_len);
  		return -1;
  #endif /* CONFIG_DPP */
  	} else {
  		wpa_printf(MSG_DEBUG, "WPA: PTK derivation using PRF(SHA1)");
  		if (sha1_prf(pmk, pmk_len, label, data, data_len, tmp,
  			     ptk_len) < 0)
  			return -1;
  	}
  
  	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);
  	if (z && z_len)
  		wpa_hexdump_key(MSG_DEBUG, "WPA: Z.x", z, z_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);
  
  	if (kdk_len) {
  		os_memcpy(ptk->kdk, tmp + ptk->kck_len + ptk->kek_len +
  			  ptk->tk_len, ptk->kdk_len);
  		wpa_hexdump_key(MSG_DEBUG, "WPA: KDK", ptk->kdk, ptk->kdk_len);
  	}
  
  	ptk->kek2_len = 0;
  	ptk->kck2_len = 0;
  
  	os_memset(tmp, 0, sizeof(tmp));
  	os_memset(data, 0, data_len);
  	return 0;
  }
  
  #ifdef CONFIG_FILS
  
  int fils_rmsk_to_pmk(int akmp, const u8 *rmsk, size_t rmsk_len,
  		     const u8 *snonce, const u8 *anonce, const u8 *dh_ss,
  		     size_t dh_ss_len, u8 *pmk, size_t *pmk_len)
  {
  	u8 nonces[2 * FILS_NONCE_LEN];
  	const u8 *addr[2];
  	size_t len[2];
  	size_t num_elem;
  	int res;
  
  	/* PMK = HMAC-Hash(SNonce || ANonce, rMSK [ || DHss ]) */
  	wpa_printf(MSG_DEBUG, "FILS: rMSK to PMK derivation");
  
  	if (wpa_key_mgmt_sha384(akmp))
  		*pmk_len = SHA384_MAC_LEN;
  	else if (wpa_key_mgmt_sha256(akmp))
  		*pmk_len = SHA256_MAC_LEN;
  	else
  		return -1;
  
  	wpa_hexdump_key(MSG_DEBUG, "FILS: rMSK", rmsk, rmsk_len);
  	wpa_hexdump(MSG_DEBUG, "FILS: SNonce", snonce, FILS_NONCE_LEN);
  	wpa_hexdump(MSG_DEBUG, "FILS: ANonce", anonce, FILS_NONCE_LEN);
  	wpa_hexdump(MSG_DEBUG, "FILS: DHss", dh_ss, dh_ss_len);
  
  	os_memcpy(nonces, snonce, FILS_NONCE_LEN);
  	os_memcpy(&nonces[FILS_NONCE_LEN], anonce, FILS_NONCE_LEN);
  	addr[0] = rmsk;
  	len[0] = rmsk_len;
  	num_elem = 1;
  	if (dh_ss) {
  		addr[1] = dh_ss;
  		len[1] = dh_ss_len;
  		num_elem++;
  	}
  	if (wpa_key_mgmt_sha384(akmp))
  		res = hmac_sha384_vector(nonces, 2 * FILS_NONCE_LEN, num_elem,
  					 addr, len, pmk);
  	else
  		res = hmac_sha256_vector(nonces, 2 * FILS_NONCE_LEN, num_elem,
  					 addr, len, pmk);
  	if (res == 0)
  		wpa_hexdump_key(MSG_DEBUG, "FILS: PMK", pmk, *pmk_len);
  	else
  		*pmk_len = 0;
  	return res;
  }
  
  
  int fils_pmkid_erp(int akmp, const u8 *reauth, size_t reauth_len,
  		   u8 *pmkid)
  {
  	const u8 *addr[1];
  	size_t len[1];
  	u8 hash[SHA384_MAC_LEN];
  	int res;
  
  	/* PMKID = Truncate-128(Hash(EAP-Initiate/Reauth)) */
  	addr[0] = reauth;
  	len[0] = reauth_len;
  	if (wpa_key_mgmt_sha384(akmp))
  		res = sha384_vector(1, addr, len, hash);
  	else if (wpa_key_mgmt_sha256(akmp))
  		res = sha256_vector(1, addr, len, hash);
  	else
  		return -1;
  	if (res)
  		return res;
  	os_memcpy(pmkid, hash, PMKID_LEN);
  	wpa_hexdump(MSG_DEBUG, "FILS: PMKID", pmkid, PMKID_LEN);
  	return 0;
  }
  
  
  int fils_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const u8 *spa, const u8 *aa,
  		    const u8 *snonce, const u8 *anonce, const u8 *dhss,
  		    size_t dhss_len, struct wpa_ptk *ptk,
  		    u8 *ick, size_t *ick_len, int akmp, int cipher,
  		    u8 *fils_ft, size_t *fils_ft_len, size_t kdk_len)
  {
  	u8 *data, *pos;
  	size_t data_len;
  	u8 tmp[FILS_ICK_MAX_LEN + WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN +
  	       FILS_FT_MAX_LEN + WPA_KDK_MAX_LEN];
  	size_t key_data_len;
  	const char *label = "FILS PTK Derivation";
  	int ret = -1;
  	size_t offset;
  
  	/*
  	 * FILS-Key-Data = PRF-X(PMK, "FILS PTK Derivation",
  	 *                       SPA || AA || SNonce || ANonce [ || DHss ])
  	 * ICK = L(FILS-Key-Data, 0, ICK_bits)
  	 * KEK = L(FILS-Key-Data, ICK_bits, KEK_bits)
  	 * TK = L(FILS-Key-Data, ICK_bits + KEK_bits, TK_bits)
  	 * If doing FT initial mobility domain association:
  	 * FILS-FT = L(FILS-Key-Data, ICK_bits + KEK_bits + TK_bits,
  	 *             FILS-FT_bits)
  	 * When a KDK is derived:
  	 * KDK = L(FILS-Key-Data, ICK_bits + KEK_bits + TK_bits + FILS-FT_bits,
  	 *	   KDK_bits)
  	 */
  	data_len = 2 * ETH_ALEN + 2 * FILS_NONCE_LEN + dhss_len;
  	data = os_malloc(data_len);
  	if (!data)
  		goto err;
  	pos = data;
  	os_memcpy(pos, spa, ETH_ALEN);
  	pos += ETH_ALEN;
  	os_memcpy(pos, aa, ETH_ALEN);
  	pos += ETH_ALEN;
  	os_memcpy(pos, snonce, FILS_NONCE_LEN);
  	pos += FILS_NONCE_LEN;
  	os_memcpy(pos, anonce, FILS_NONCE_LEN);
  	pos += FILS_NONCE_LEN;
  	if (dhss)
  		os_memcpy(pos, dhss, dhss_len);
  
  	ptk->kck_len = 0;
  	ptk->kek_len = wpa_kek_len(akmp, pmk_len);
  	ptk->tk_len = wpa_cipher_key_len(cipher);
  	if (wpa_key_mgmt_sha384(akmp))
  		*ick_len = 48;
  	else if (wpa_key_mgmt_sha256(akmp))
  		*ick_len = 32;
  	else
  		goto err;
  	key_data_len = *ick_len + ptk->kek_len + ptk->tk_len;
  
  	if (kdk_len) {
  		if (kdk_len > WPA_KDK_MAX_LEN) {
  			wpa_printf(MSG_ERROR, "FILS: KDK len=%zu too big",
  				   kdk_len);
  			goto err;
  		}
  
  		ptk->kdk_len = kdk_len;
  		key_data_len += kdk_len;
  	} else {
  		ptk->kdk_len = 0;
  	}
  
  	if (fils_ft && fils_ft_len) {
  		if (akmp == WPA_KEY_MGMT_FT_FILS_SHA256) {
  			*fils_ft_len = 32;
  		} else if (akmp == WPA_KEY_MGMT_FT_FILS_SHA384) {
  			*fils_ft_len = 48;
  		} else {
  			*fils_ft_len = 0;
  			fils_ft = NULL;
  		}
  		key_data_len += *fils_ft_len;
  	}
  
  	if (wpa_key_mgmt_sha384(akmp)) {
  		wpa_printf(MSG_DEBUG, "FILS: PTK derivation using PRF(SHA384)");
  		if (sha384_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, key_data_len) < 0)
  			goto err;
  	} else {
  		wpa_printf(MSG_DEBUG, "FILS: PTK derivation using PRF(SHA256)");
  		if (sha256_prf(pmk, pmk_len, label, data, data_len,
  			       tmp, key_data_len) < 0)
  			goto err;
  	}
  
  	wpa_printf(MSG_DEBUG, "FILS: PTK derivation - SPA=" MACSTR
  		   " AA=" MACSTR, MAC2STR(spa), MAC2STR(aa));
  	wpa_hexdump(MSG_DEBUG, "FILS: SNonce", snonce, FILS_NONCE_LEN);
  	wpa_hexdump(MSG_DEBUG, "FILS: ANonce", anonce, FILS_NONCE_LEN);
  	if (dhss)
  		wpa_hexdump_key(MSG_DEBUG, "FILS: DHss", dhss, dhss_len);
  	wpa_hexdump_key(MSG_DEBUG, "FILS: PMK", pmk, pmk_len);
  	wpa_hexdump_key(MSG_DEBUG, "FILS: FILS-Key-Data", tmp, key_data_len);
  
  	os_memcpy(ick, tmp, *ick_len);
  	offset = *ick_len;
  	wpa_hexdump_key(MSG_DEBUG, "FILS: ICK", ick, *ick_len);
  
  	os_memcpy(ptk->kek, tmp + offset, ptk->kek_len);
  	wpa_hexdump_key(MSG_DEBUG, "FILS: KEK", ptk->kek, ptk->kek_len);
  	offset += ptk->kek_len;
  
  	os_memcpy(ptk->tk, tmp + offset, ptk->tk_len);
  	wpa_hexdump_key(MSG_DEBUG, "FILS: TK", ptk->tk, ptk->tk_len);
  	offset += ptk->tk_len;
  
  	if (fils_ft && fils_ft_len) {
  		os_memcpy(fils_ft, tmp + offset, *fils_ft_len);
  		wpa_hexdump_key(MSG_DEBUG, "FILS: FILS-FT",
  				fils_ft, *fils_ft_len);
  		offset += *fils_ft_len;
  	}
  
  	if (ptk->kdk_len) {
  		os_memcpy(ptk->kdk, tmp + offset, ptk->kdk_len);
  		wpa_hexdump_key(MSG_DEBUG, "FILS: KDK", ptk->kdk, ptk->kdk_len);
  	}
  
  	ptk->kek2_len = 0;
  	ptk->kck2_len = 0;
  
  	os_memset(tmp, 0, sizeof(tmp));
  	ret = 0;
  err:
  	bin_clear_free(data, data_len);
  	return ret;
  }
  
  
  int fils_key_auth_sk(const u8 *ick, size_t ick_len, const u8 *snonce,
  		     const u8 *anonce, const u8 *sta_addr, const u8 *bssid,
  		     const u8 *g_sta, size_t g_sta_len,
  		     const u8 *g_ap, size_t g_ap_len,
  		     int akmp, u8 *key_auth_sta, u8 *key_auth_ap,
  		     size_t *key_auth_len)
  {
  	const u8 *addr[6];
  	size_t len[6];
  	size_t num_elem = 4;
  	int res;
  
  	wpa_printf(MSG_DEBUG, "FILS: Key-Auth derivation: STA-MAC=" MACSTR
  		   " AP-BSSID=" MACSTR, MAC2STR(sta_addr), MAC2STR(bssid));
  	wpa_hexdump_key(MSG_DEBUG, "FILS: ICK", ick, ick_len);
  	wpa_hexdump(MSG_DEBUG, "FILS: SNonce", snonce, FILS_NONCE_LEN);
  	wpa_hexdump(MSG_DEBUG, "FILS: ANonce", anonce, FILS_NONCE_LEN);
  	wpa_hexdump(MSG_DEBUG, "FILS: gSTA", g_sta, g_sta_len);
  	wpa_hexdump(MSG_DEBUG, "FILS: gAP", g_ap, g_ap_len);
  
  	/*
  	 * For (Re)Association Request frame (STA->AP):
  	 * Key-Auth = HMAC-Hash(ICK, SNonce || ANonce || STA-MAC || AP-BSSID
  	 *                      [ || gSTA || gAP ])
  	 */
  	addr[0] = snonce;
  	len[0] = FILS_NONCE_LEN;
  	addr[1] = anonce;
  	len[1] = FILS_NONCE_LEN;
  	addr[2] = sta_addr;
  	len[2] = ETH_ALEN;
  	addr[3] = bssid;
  	len[3] = ETH_ALEN;
  	if (g_sta && g_sta_len && g_ap && g_ap_len) {
  		addr[4] = g_sta;
  		len[4] = g_sta_len;
  		addr[5] = g_ap;
  		len[5] = g_ap_len;
  		num_elem = 6;
  	}
  
  	if (wpa_key_mgmt_sha384(akmp)) {
  		*key_auth_len = 48;
  		res = hmac_sha384_vector(ick, ick_len, num_elem, addr, len,
  					 key_auth_sta);
  	} else if (wpa_key_mgmt_sha256(akmp)) {
  		*key_auth_len = 32;
  		res = hmac_sha256_vector(ick, ick_len, num_elem, addr, len,
  					 key_auth_sta);
  	} else {
  		return -1;
  	}
  	if (res < 0)
  		return res;
  
  	/*
  	 * For (Re)Association Response frame (AP->STA):
  	 * Key-Auth = HMAC-Hash(ICK, ANonce || SNonce || AP-BSSID || STA-MAC
  	 *                      [ || gAP || gSTA ])
  	 */
  	addr[0] = anonce;
  	addr[1] = snonce;
  	addr[2] = bssid;
  	addr[3] = sta_addr;
  	if (g_sta && g_sta_len && g_ap && g_ap_len) {
  		addr[4] = g_ap;
  		len[4] = g_ap_len;
  		addr[5] = g_sta;
  		len[5] = g_sta_len;
  	}
  
  	if (wpa_key_mgmt_sha384(akmp))
  		res = hmac_sha384_vector(ick, ick_len, num_elem, addr, len,
  					 key_auth_ap);
  	else if (wpa_key_mgmt_sha256(akmp))
  		res = hmac_sha256_vector(ick, ick_len, num_elem, addr, len,
  					 key_auth_ap);
  	if (res < 0)
  		return res;
  
  	wpa_hexdump(MSG_DEBUG, "FILS: Key-Auth (STA)",
  		    key_auth_sta, *key_auth_len);
  	wpa_hexdump(MSG_DEBUG, "FILS: Key-Auth (AP)",
  		    key_auth_ap, *key_auth_len);
  
  	return 0;
  }
  
  #endif /* CONFIG_FILS */
  
  
  #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,
  	       const u8 *rsnxe, size_t rsnxe_len,
  	       u8 *mic)
  {
  	const u8 *addr[10];
  	size_t len[10];
  	size_t i, num_elem = 0;
  	u8 zero_mic[24];
  	size_t mic_len, fte_fixed_len;
  
  	if (kck_len == 16) {
  		mic_len = 16;
  #ifdef CONFIG_SHA384
  	} else if (kck_len == 24) {
  		mic_len = 24;
  #endif /* CONFIG_SHA384 */
  	} else {
  		wpa_printf(MSG_WARNING, "FT: Unsupported KCK length %u",
  			   (unsigned int) kck_len);
  		return -1;
  	}
  
  	fte_fixed_len = sizeof(struct rsn_ftie) - 16 + mic_len;
  
  	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 + fte_fixed_len)
  			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, mic_len);
  		addr[num_elem] = zero_mic;
  		len[num_elem] = mic_len;
  		num_elem++;
  
  		/* Rest of FTIE */
  		addr[num_elem] = ftie + 2 + 2 + mic_len;
  		len[num_elem] = ftie_len - (2 + 2 + mic_len);
  		num_elem++;
  	}
  	if (ric) {
  		addr[num_elem] = ric;
  		len[num_elem] = ric_len;
  		num_elem++;
  	}
  
  	if (rsnxe) {
  		addr[num_elem] = rsnxe;
  		len[num_elem] = rsnxe_len;
  		num_elem++;
  	}
  
  	for (i = 0; i < num_elem; i++)
  		wpa_hexdump(MSG_MSGDUMP, "FT: MIC data", addr[i], len[i]);
  #ifdef CONFIG_SHA384
  	if (kck_len == 24) {
  		u8 hash[SHA384_MAC_LEN];
  
  		if (hmac_sha384_vector(kck, kck_len, num_elem, addr, len, hash))
  			return -1;
  		os_memcpy(mic, hash, 24);
  	}
  #endif /* CONFIG_SHA384 */
  	if (kck_len == 16 &&
  	    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, int use_sha384)
  {
  	const u8 *end, *pos;
  
  	parse->ftie = ie;
  	parse->ftie_len = ie_len;
  
  	pos = ie + (use_sha384 ? sizeof(struct rsn_ftie_sha384) :
  		    sizeof(struct rsn_ftie));
  	end = ie + ie_len;
  	wpa_hexdump(MSG_DEBUG, "FT: Parse FTE subelements", pos, end - pos);
  
  	while (end - pos >= 2) {
  		u8 id, len;
  
  		id = *pos++;
  		len = *pos++;
  		if (len > end - pos) {
  			wpa_printf(MSG_DEBUG, "FT: Truncated subelement");
  			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;
  		case FTIE_SUBELEM_IGTK:
  			parse->igtk = pos;
  			parse->igtk_len = len;
  			break;
  #ifdef CONFIG_OCV
  		case FTIE_SUBELEM_OCI:
  			parse->oci = pos;
  			parse->oci_len = len;
  			break;
  #endif /* CONFIG_OCV */
  		case FTIE_SUBELEM_BIGTK:
  			parse->bigtk = pos;
  			parse->bigtk_len = len;
  			break;
  		default:
  			wpa_printf(MSG_DEBUG, "FT: Unknown subelem id %u", id);
  			break;
  		}
  
  		pos += len;
  	}
  
  	return 0;
  }
  
  
  int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
  		     struct wpa_ft_ies *parse, int use_sha384)
  {
  	const u8 *end, *pos;
  	struct wpa_ie_data data;
  	int ret;
  	const struct rsn_ftie *ftie;
  	int prot_ie_count = 0;
  	int update_use_sha384 = 0;
  
  	if (use_sha384 < 0) {
  		use_sha384 = 0;
  		update_use_sha384 = 1;
  	}
  
  	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:
  			wpa_hexdump(MSG_DEBUG, "FT: RSNE", pos, len);
  			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;
  			}
  			parse->rsn_capab = data.capabilities;
  			if (data.num_pmkid == 1 && data.pmkid)
  				parse->rsn_pmkid = data.pmkid;
  			parse->key_mgmt = data.key_mgmt;
  			parse->pairwise_cipher = data.pairwise_cipher;
  			if (update_use_sha384) {
  				use_sha384 =
  					wpa_key_mgmt_sha384(parse->key_mgmt);
  				update_use_sha384 = 0;
  			}
  			break;
  		case WLAN_EID_RSNX:
  			wpa_hexdump(MSG_DEBUG, "FT: RSNXE", pos, len);
  			if (len < 1)
  				break;
  			parse->rsnxe = pos;
  			parse->rsnxe_len = len;
  			break;
  		case WLAN_EID_MOBILITY_DOMAIN:
  			wpa_hexdump(MSG_DEBUG, "FT: MDE", pos, len);
  			if (len < sizeof(struct rsn_mdie))
  				return -1;
  			parse->mdie = pos;
  			parse->mdie_len = len;
  			break;
  		case WLAN_EID_FAST_BSS_TRANSITION:
  			wpa_hexdump(MSG_DEBUG, "FT: FTE", pos, len);
  			if (use_sha384) {
  				const struct rsn_ftie_sha384 *ftie_sha384;
  
  				if (len < sizeof(*ftie_sha384))
  					return -1;
  				ftie_sha384 =
  					(const struct rsn_ftie_sha384 *) pos;
  				wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC Control",
  					    ftie_sha384->mic_control, 2);
  				wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC",
  					    ftie_sha384->mic,
  					    sizeof(ftie_sha384->mic));
  				parse->fte_anonce = ftie_sha384->anonce;
  				wpa_hexdump(MSG_DEBUG, "FT: FTE-ANonce",
  					    ftie_sha384->anonce,
  					    WPA_NONCE_LEN);
  				parse->fte_snonce = ftie_sha384->snonce;
  				wpa_hexdump(MSG_DEBUG, "FT: FTE-SNonce",
  					    ftie_sha384->snonce,
  					    WPA_NONCE_LEN);
  				prot_ie_count = ftie_sha384->mic_control[1];
  				if (wpa_ft_parse_ftie(pos, len, parse, 1) < 0)
  					return -1;
  				break;
  			}
  
  			if (len < sizeof(*ftie))
  				return -1;
  			ftie = (const struct rsn_ftie *) pos;
  			wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC Control",
  				    ftie->mic_control, 2);
  			wpa_hexdump(MSG_DEBUG, "FT: FTE-MIC",
  				    ftie->mic, sizeof(ftie->mic));
  			parse->fte_anonce = ftie->anonce;
  			wpa_hexdump(MSG_DEBUG, "FT: FTE-ANonce",
  				    ftie->anonce, WPA_NONCE_LEN);
  			parse->fte_snonce = ftie->snonce;
  			wpa_hexdump(MSG_DEBUG, "FT: FTE-SNonce",
  				    ftie->snonce, WPA_NONCE_LEN);
  			prot_ie_count = ftie->mic_control[1];
  			if (wpa_ft_parse_ftie(pos, len, parse, 0) < 0)
  				return -1;
  			break;
  		case WLAN_EID_TIMEOUT_INTERVAL:
  			wpa_hexdump(MSG_DEBUG, "FT: Timeout Interval",
  				    pos, len);
  			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 (parse->rsnxe)
  		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 */
  
  
  #ifdef CONFIG_PASN
  
  /*
   * pasn_use_sha384 - Should SHA384 be used or SHA256
   *
   * @akmp: Authentication and key management protocol
   * @cipher: The cipher suite
   *
   * According to IEEE P802.11az/D2.7, 12.12.7, the hash algorithm to use is the
   * hash algorithm defined for the Base AKM (see Table 9-151 (AKM suite
   * selectors)). When there is no Base AKM, the hash algorithm is selected based
   * on the pairwise cipher suite provided in the RSNE by the AP in the second
   * PASN frame. SHA-256 is used as the hash algorithm, except for the ciphers
   * 00-0F-AC:9 and 00-0F-AC:10 for which SHA-384 is used.
   */
  static bool pasn_use_sha384(int akmp, int cipher)
  {
  	return (akmp == WPA_KEY_MGMT_PASN && (cipher == WPA_CIPHER_CCMP_256 ||
  					      cipher == WPA_CIPHER_GCMP_256)) ||
  		wpa_key_mgmt_sha384(akmp);
  }
  
  
  /**
   * pasn_pmk_to_ptk - Calculate PASN PTK from PMK, addresses, etc.
   * @pmk: Pairwise master key
   * @pmk_len: Length of PMK
   * @spa: Suppplicant address
   * @bssid: AP BSSID
   * @dhss: Is the shared secret (DHss) derived from the PASN ephemeral key
   *	exchange encoded as an octet string
   * @dhss_len: The length of dhss in octets
   * @ptk: Buffer for pairwise transient key
   * @akmp: Negotiated AKM
   * @cipher: Negotiated pairwise cipher
   * @kdk_len: the length in octets that should be derived for HTLK. Can be zero.
   * Returns: 0 on success, -1 on failure
   */
  int pasn_pmk_to_ptk(const u8 *pmk, size_t pmk_len,
  		    const u8 *spa, const u8 *bssid,
  		    const u8 *dhss, size_t dhss_len,
  		    struct wpa_ptk *ptk, int akmp, int cipher,
  		    size_t kdk_len)
  {
  	u8 tmp[WPA_KCK_MAX_LEN + WPA_TK_MAX_LEN + WPA_KDK_MAX_LEN];
  	u8 *data;
  	size_t data_len, ptk_len;
  	int ret = -1;
  	const char *label = "PASN PTK Derivation";
  
  	if (!pmk || !pmk_len) {
  		wpa_printf(MSG_ERROR, "PASN: No PMK set for PTK derivation");
  		return -1;
  	}
  
  	if (!dhss || !dhss_len) {
  		wpa_printf(MSG_ERROR, "PASN: No DHss set for PTK derivation");
  		return -1;
  	}
  
  	/*
  	 * PASN-PTK = KDF(PMK, “PASN PTK Derivation”, SPA || BSSID || DHss)
  	 *
  	 * KCK = L(PASN-PTK, 0, 256)
  	 * TK = L(PASN-PTK, 256, TK_bits)
  	 * KDK = L(PASN-PTK, 256 + TK_bits, kdk_len * 8)
  	 */
  	data_len = 2 * ETH_ALEN + dhss_len;
  	data = os_zalloc(data_len);
  	if (!data)
  		return -1;
  
  	os_memcpy(data, spa, ETH_ALEN);
  	os_memcpy(data + ETH_ALEN, bssid, ETH_ALEN);
  	os_memcpy(data + 2 * ETH_ALEN, dhss, dhss_len);
  
  	ptk->kck_len = WPA_PASN_KCK_LEN;
  	ptk->tk_len = wpa_cipher_key_len(cipher);
  	ptk->kdk_len = kdk_len;
  	ptk->kek_len = 0;
  	ptk->kek2_len = 0;
  	ptk->kck2_len = 0;
  
  	if (ptk->tk_len == 0) {
  		wpa_printf(MSG_ERROR,
  			   "PASN: Unsupported cipher (0x%x) used in PTK derivation",
  			   cipher);
  		goto err;
  	}
  
  	ptk_len = ptk->kck_len + ptk->tk_len + ptk->kdk_len;
  	if (ptk_len > sizeof(tmp))
  		goto err;
  
  	if (pasn_use_sha384(akmp, cipher)) {
  		wpa_printf(MSG_DEBUG, "PASN: PTK derivation using SHA384");
  
  		if (sha384_prf(pmk, pmk_len, label, data, data_len, tmp,
  			       ptk_len) < 0)
  			goto err;
  	} else {
  		wpa_printf(MSG_DEBUG, "PASN: PTK derivation using SHA256");
  
  		if (sha256_prf(pmk, pmk_len, label, data, data_len, tmp,
  			       ptk_len) < 0)
  			goto err;
  	}
  
  	wpa_printf(MSG_DEBUG,
  		   "PASN: PTK derivation: SPA=" MACSTR " BSSID=" MACSTR,
  		   MAC2STR(spa), MAC2STR(bssid));
  
  	wpa_hexdump_key(MSG_DEBUG, "PASN: DHss", dhss, dhss_len);
  	wpa_hexdump_key(MSG_DEBUG, "PASN: PMK", pmk, pmk_len);
  	wpa_hexdump_key(MSG_DEBUG, "PASN: PASN-PTK", tmp, ptk_len);
  
  	os_memcpy(ptk->kck, tmp, WPA_PASN_KCK_LEN);
  	wpa_hexdump_key(MSG_DEBUG, "PASN: KCK:", ptk->kck, WPA_PASN_KCK_LEN);
  
  	os_memcpy(ptk->tk, tmp + WPA_PASN_KCK_LEN, ptk->tk_len);
  	wpa_hexdump_key(MSG_DEBUG, "PASN: TK:", ptk->tk, ptk->tk_len);
  
  	if (kdk_len) {
  		os_memcpy(ptk->kdk, tmp + WPA_PASN_KCK_LEN + ptk->tk_len,
  			  ptk->kdk_len);
  		wpa_hexdump_key(MSG_DEBUG, "PASN: KDK:",
  				ptk->kdk, ptk->kdk_len);
  	}
  
  	forced_memzero(tmp, sizeof(tmp));
  	ret = 0;
  err:
  	bin_clear_free(data, data_len);
  	return ret;
  }
  
  
  /*
   * pasn_mic_len - Returns the MIC length for PASN authentication
   */
  u8 pasn_mic_len(int akmp, int cipher)
  {
  	if (pasn_use_sha384(akmp, cipher))
  		return 24;
  
  	return 16;
  }
  
  
  /**
   * pasn_mic - Calculate PASN MIC
   * @kck: The key confirmation key for the PASN PTKSA
   * @akmp: Negotiated AKM
   * @cipher: Negotiated pairwise cipher
   * @addr1: For the 2nd PASN frame supplicant address; for the 3rd frame the
   *	BSSID
   * @addr2: For the 2nd PASN frame the BSSID; for the 3rd frame the supplicant
   *	address
   * @data: For calculating the MIC for the 2nd PASN frame, this should hold the
   *	Beacon frame RSNE + RSNXE. For calculating the MIC for the 3rd PASN
   *	frame, this should hold the hash of the body of the PASN 1st frame.
   * @data_len: The length of data
   * @frame: The body of the PASN frame including the MIC element with the octets
   *	in the MIC field of the MIC element set to 0.
   * @frame_len: The length of frame
   * @mic: Buffer to hold the MIC on success. Should be big enough to handle the
   *	maximal MIC length
   * Returns: 0 on success, -1 on failure
   */
  int pasn_mic(const u8 *kck, int akmp, int cipher,
  	     const u8 *addr1, const u8 *addr2,
  	     const u8 *data, size_t data_len,
  	     const u8 *frame, size_t frame_len, u8 *mic)
  {
  	u8 *buf;
  	u8 hash[SHA384_MAC_LEN];
  	size_t buf_len = 2 * ETH_ALEN + data_len + frame_len;
  	int ret = -1;
  
  	if (!kck) {
  		wpa_printf(MSG_ERROR, "PASN: No KCK for MIC calculation");
  		return -1;
  	}
  
  	if (!data || !data_len) {
  		wpa_printf(MSG_ERROR, "PASN: invalid data for MIC calculation");
  		return -1;
  	}
  
  	if (!frame || !frame_len) {
  		wpa_printf(MSG_ERROR, "PASN: invalid data for MIC calculation");
  		return -1;
  	}
  
  	buf = os_zalloc(buf_len);
  	if (!buf)
  		return -1;
  
  	os_memcpy(buf, addr1, ETH_ALEN);
  	os_memcpy(buf + ETH_ALEN, addr2, ETH_ALEN);
  
  	wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: data", data, data_len);
  	os_memcpy(buf + 2 * ETH_ALEN, data, data_len);
  
  	wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: frame", frame, frame_len);
  	os_memcpy(buf + 2 * ETH_ALEN + data_len, frame, frame_len);
  
  	wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: KCK", kck, WPA_PASN_KCK_LEN);
  	wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: buf", buf, buf_len);
  
  	if (pasn_use_sha384(akmp, cipher)) {
  		wpa_printf(MSG_DEBUG, "PASN: MIC using HMAC-SHA384");
  
  		if (hmac_sha384(kck, WPA_PASN_KCK_LEN, buf, buf_len, hash))
  			goto err;
  
  		os_memcpy(mic, hash, 24);
  		wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: mic: ", mic, 24);
  	} else {
  		wpa_printf(MSG_DEBUG, "PASN: MIC using HMAC-SHA256");
  
  		if (hmac_sha256(kck, WPA_PASN_KCK_LEN, buf, buf_len, hash))
  			goto err;
  
  		os_memcpy(mic, hash, 16);
  		wpa_hexdump_key(MSG_DEBUG, "PASN: MIC: mic: ", mic, 16);
  	}
  
  	ret = 0;
  err:
  	bin_clear_free(buf, buf_len);
  	return ret;
  }
  
  
  /**
   * pasn_auth_frame_hash - Computes a hash of an Authentication frame body
   * @akmp: Negotiated AKM
   * @cipher: Negotiated pairwise cipher
   * @data: Pointer to the Authentication frame body
   * @len: Length of the Authentication frame body
   * @hash: On return would hold the computed hash. Should be big enough to handle
   *	SHA384.
   * Returns: 0 on success, -1 on failure
   */
  int pasn_auth_frame_hash(int akmp, int cipher, const u8 *data, size_t len,
  			 u8 *hash)
  {
  	if (pasn_use_sha384(akmp, cipher)) {
  		wpa_printf(MSG_DEBUG, "PASN: Frame hash using SHA-384");
  		return sha384_vector(1, &data, &len, hash);
  	} else {
  		wpa_printf(MSG_DEBUG, "PASN: Frame hash using SHA-256");
  		return sha256_vector(1, &data, &len, hash);
  	}
  }
  
  #endif /* CONFIG_PASN */
  
  
  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;
  	if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
  		return WPA_CIPHER_AES_128_CMAC;
  	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;
  #ifdef CONFIG_SHA384
  	if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_802_1X_SHA384)
  		return WPA_KEY_MGMT_FT_IEEE8021X_SHA384;
  #endif /* CONFIG_SHA384 */
  #endif /* CONFIG_IEEE80211R */
  	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;
  #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_FILS_SHA256)
  		return WPA_KEY_MGMT_FILS_SHA256;
  	if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FILS_SHA384)
  		return WPA_KEY_MGMT_FILS_SHA384;
  	if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_FILS_SHA256)
  		return WPA_KEY_MGMT_FT_FILS_SHA256;
  	if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_FILS_SHA384)
  		return WPA_KEY_MGMT_FT_FILS_SHA384;
  #ifdef CONFIG_OWE
  	if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_OWE)
  		return WPA_KEY_MGMT_OWE;
  #endif /* CONFIG_OWE */
  #ifdef CONFIG_DPP
  	if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_DPP)
  		return WPA_KEY_MGMT_DPP;
  #endif /* CONFIG_DPP */
  	if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_OSEN)
  		return WPA_KEY_MGMT_OSEN;
  #ifdef CONFIG_PASN
  	if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PASN)
  		return WPA_KEY_MGMT_PASN;
  #endif /* CONFIG_PASN */
  	return 0;
  }
  
  
  int wpa_cipher_valid_group(int cipher)
  {
  	return wpa_cipher_valid_pairwise(cipher) ||
  		cipher == WPA_CIPHER_GTK_NOT_USED;
  }
  
  
  int wpa_cipher_valid_mgmt_group(int cipher)
  {
  	return cipher == WPA_CIPHER_GTK_NOT_USED ||
  		cipher == WPA_CIPHER_AES_128_CMAC ||
  		cipher == WPA_CIPHER_BIP_GMAC_128 ||
  		cipher == WPA_CIPHER_BIP_GMAC_256 ||
  		cipher == WPA_CIPHER_BIP_CMAC_256;
  }
  
  
  /**
   * 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;
  	data->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
  
  	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->group_cipher = WPA_CIPHER_GTK_NOT_USED;
  		data->has_group = 1;
  		data->key_mgmt = WPA_KEY_MGMT_OSEN;
  		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);
  		data->has_group = 1;
  		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;
  		}
  		if (count)
  			data->has_pairwise = 1;
  		for (i = 0; i < count; i++) {
  			data->pairwise_cipher |= rsn_selector_to_bitfield(pos);
  			pos += RSN_SELECTOR_LEN;
  			left -= RSN_SELECTOR_LEN;
  		}
  		if (data->pairwise_cipher & WPA_CIPHER_AES_128_CMAC) {
  			wpa_printf(MSG_DEBUG, "%s: AES-128-CMAC used as "
  				   "pairwise cipher", __func__);
  			return -1;
  		}
  	} 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;
  		}
  	}
  
  	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;
  	}
  
  	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;
  }
  
  
  int wpa_default_rsn_cipher(int freq)
  {
  	if (freq > 56160)
  		return WPA_CIPHER_GCMP; /* DMG */
  
  	return WPA_CIPHER_CCMP;
  }
  
  
  #ifdef CONFIG_IEEE80211R
  
  /**
   * wpa_derive_pmk_r0 - Derive PMK-R0 and PMKR0Name
   *
   * IEEE Std 802.11r-2008 - 8.5.1.5.3
   */
  int 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,
  		      int use_sha384)
  {
  	u8 buf[1 + SSID_MAX_LEN + MOBILITY_DOMAIN_ID_LEN + 1 +
  	       FT_R0KH_ID_MAX_LEN + ETH_ALEN];
  	u8 *pos, r0_key_data[64], hash[48];
  	const u8 *addr[2];
  	size_t len[2];
  	size_t q = use_sha384 ? 48 : 32;
  	size_t r0_key_data_len = q + 16;
  
  	/*
  	 * 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; or the first
  	 * 384 bits of MSK for FT-EAP-SHA384.
  	 * PMK-R0 = L(R0-Key-Data, 0, Q)
  	 * PMK-R0Name-Salt = L(R0-Key-Data, Q, 128)
  	 * Q = 384 for FT-EAP-SHA384; otherwise, 256
  	 */
  	if (ssid_len > SSID_MAX_LEN || r0kh_id_len > FT_R0KH_ID_MAX_LEN)
  		return -1;
  	wpa_printf(MSG_DEBUG, "FT: Derive PMK-R0 using KDF-%s",
  		   use_sha384 ? "SHA384" : "SHA256");
  	wpa_hexdump_key(MSG_DEBUG, "FT: XXKey", xxkey, xxkey_len);
  	wpa_hexdump_ascii(MSG_DEBUG, "FT: SSID", ssid, ssid_len);
  	wpa_hexdump(MSG_DEBUG, "FT: MDID", mdid, MOBILITY_DOMAIN_ID_LEN);
  	wpa_hexdump_ascii(MSG_DEBUG, "FT: R0KH-ID", r0kh_id, r0kh_id_len);
  	wpa_printf(MSG_DEBUG, "FT: S0KH-ID: " MACSTR, MAC2STR(s0kh_id));
  	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;
  
  #ifdef CONFIG_SHA384
  	if (use_sha384) {
  		if (xxkey_len != SHA384_MAC_LEN) {
  			wpa_printf(MSG_ERROR,
  				   "FT: Unexpected XXKey length %d (expected %d)",
  				   (int) xxkey_len, SHA384_MAC_LEN);
  			return -1;
  		}
  		if (sha384_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
  			       r0_key_data, r0_key_data_len) < 0)
  			return -1;
  	}
  #endif /* CONFIG_SHA384 */
  	if (!use_sha384) {
  		if (xxkey_len != PMK_LEN) {
  			wpa_printf(MSG_ERROR,
  				   "FT: Unexpected XXKey length %d (expected %d)",
  				   (int) xxkey_len, PMK_LEN);
  			return -1;
  		}
  		if (sha256_prf(xxkey, xxkey_len, "FT-R0", buf, pos - buf,
  			       r0_key_data, r0_key_data_len) < 0)
  			return -1;
  	}
  	os_memcpy(pmk_r0, r0_key_data, q);
  	wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, q);
  	wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0Name-Salt", &r0_key_data[q], 16);
  
  	/*
  	 * PMKR0Name = Truncate-128(Hash("FT-R0N" || PMK-R0Name-Salt)
  	 */
  	addr[0] = (const u8 *) "FT-R0N";
  	len[0] = 6;
  	addr[1] = &r0_key_data[q];
  	len[1] = 16;
  
  #ifdef CONFIG_SHA384
  	if (use_sha384 && sha384_vector(2, addr, len, hash) < 0)
  		return -1;
  #endif /* CONFIG_SHA384 */
  	if (!use_sha384 && sha256_vector(2, addr, len, hash) < 0)
  		return -1;
  	os_memcpy(pmk_r0_name, hash, WPA_PMK_NAME_LEN);
  	wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", pmk_r0_name, WPA_PMK_NAME_LEN);
  	forced_memzero(r0_key_data, sizeof(r0_key_data));
  	return 0;
  }
  
  
  /**
   * wpa_derive_pmk_r1_name - Derive PMKR1Name
   *
   * IEEE Std 802.11r-2008 - 8.5.1.5.4
   */
  int wpa_derive_pmk_r1_name(const u8 *pmk_r0_name, const u8 *r1kh_id,
  			   const u8 *s1kh_id, u8 *pmk_r1_name, int use_sha384)
  {
  	u8 hash[48];
  	const u8 *addr[4];
  	size_t len[4];
  
  	/*
  	 * PMKR1Name = Truncate-128(Hash("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;
  
  #ifdef CONFIG_SHA384
  	if (use_sha384 && sha384_vector(4, addr, len, hash) < 0)
  		return -1;
  #endif /* CONFIG_SHA384 */
  	if (!use_sha384 && sha256_vector(4, addr, len, hash) < 0)
  		return -1;
  	os_memcpy(pmk_r1_name, hash, WPA_PMK_NAME_LEN);
  	wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", pmk_r1_name, WPA_PMK_NAME_LEN);
  	return 0;
  }
  
  
  /**
   * wpa_derive_pmk_r1 - Derive PMK-R1 and PMKR1Name from PMK-R0
   *
   * IEEE Std 802.11r-2008 - 8.5.1.5.4
   */
  int wpa_derive_pmk_r1(const u8 *pmk_r0, size_t pmk_r0_len,
  		      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) */
  	wpa_printf(MSG_DEBUG, "FT: Derive PMK-R1 using KDF-%s",
  		   pmk_r0_len == SHA384_MAC_LEN ? "SHA384" : "SHA256");
  	wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, pmk_r0_len);
  	wpa_hexdump(MSG_DEBUG, "FT: R1KH-ID", r1kh_id, FT_R1KH_ID_LEN);
  	wpa_printf(MSG_DEBUG, "FT: S1KH-ID: " MACSTR, MAC2STR(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;
  
  #ifdef CONFIG_SHA384
  	if (pmk_r0_len == SHA384_MAC_LEN &&
  	    sha384_prf(pmk_r0, pmk_r0_len, "FT-R1",
  		       buf, pos - buf, pmk_r1, pmk_r0_len) < 0)
  		return -1;
  #endif /* CONFIG_SHA384 */
  	if (pmk_r0_len == PMK_LEN &&
  	    sha256_prf(pmk_r0, pmk_r0_len, "FT-R1",
  		       buf, pos - buf, pmk_r1, pmk_r0_len) < 0)
  		return -1;
  	if (pmk_r0_len != SHA384_MAC_LEN && pmk_r0_len != PMK_LEN) {
  		wpa_printf(MSG_ERROR, "FT: Unexpected PMK-R0 length %d",
  			   (int) pmk_r0_len);
  		return -1;
  	}
  	wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, pmk_r0_len);
  
  	return wpa_derive_pmk_r1_name(pmk_r0_name, r1kh_id, s1kh_id,
  				      pmk_r1_name,
  				      pmk_r0_len == SHA384_MAC_LEN);
  }
  
  
  /**
   * 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, size_t pmk_r1_len,
  		      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,
  		      size_t kdk_len)
  {
  	u8 buf[2 * WPA_NONCE_LEN + 2 * ETH_ALEN];
  	u8 *pos, hash[32];
  	const u8 *addr[6];
  	size_t len[6];
  	u8 tmp[2 * WPA_KCK_MAX_LEN + 2 * WPA_KEK_MAX_LEN + WPA_TK_MAX_LEN +
  	       WPA_KDK_MAX_LEN];
  	size_t ptk_len, offset;
  	int use_sha384 = wpa_key_mgmt_sha384(akmp);
  
  	if (kdk_len > WPA_KDK_MAX_LEN) {
  		wpa_printf(MSG_ERROR,
  			   "FT: KDK len=%zu exceeds max supported len",
  			   kdk_len);
  		return -1;
  	}
  
  	/*
  	 * PTK = KDF-PTKLen(PMK-R1, "FT-PTK", SNonce || ANonce ||
  	 *                  BSSID || STA-ADDR)
  	 */
  	wpa_printf(MSG_DEBUG, "FT: Derive PTK using KDF-%s",
  		   use_sha384 ? "SHA384" : "SHA256");
  	wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, pmk_r1_len);
  	wpa_hexdump(MSG_DEBUG, "FT: SNonce", snonce, WPA_NONCE_LEN);
  	wpa_hexdump(MSG_DEBUG, "FT: ANonce", anonce, WPA_NONCE_LEN);
  	wpa_printf(MSG_DEBUG, "FT: BSSID=" MACSTR " STA-ADDR=" MACSTR,
  		   MAC2STR(bssid), MAC2STR(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, PMK_LEN);
  	ptk->kck2_len = wpa_kck2_len(akmp);
  	ptk->kek_len = wpa_kek_len(akmp, PMK_LEN);
  	ptk->kek2_len = wpa_kek2_len(akmp);
  	ptk->tk_len = wpa_cipher_key_len(cipher);
  	ptk->kdk_len = kdk_len;
  	ptk_len = ptk->kck_len + ptk->kek_len + ptk->tk_len +
  		ptk->kck2_len + ptk->kek2_len + ptk->kdk_len;
  
  #ifdef CONFIG_SHA384
  	if (use_sha384) {
  		if (pmk_r1_len != SHA384_MAC_LEN) {
  			wpa_printf(MSG_ERROR,
  				   "FT: Unexpected PMK-R1 length %d (expected %d)",
  				   (int) pmk_r1_len, SHA384_MAC_LEN);
  			return -1;
  		}
  		if (sha384_prf(pmk_r1, pmk_r1_len, "FT-PTK",
  			       buf, pos - buf, tmp, ptk_len) < 0)
  			return -1;
  	}
  #endif /* CONFIG_SHA384 */
  	if (!use_sha384) {
  		if (pmk_r1_len != PMK_LEN) {
  			wpa_printf(MSG_ERROR,
  				   "FT: Unexpected PMK-R1 length %d (expected %d)",
  				   (int) pmk_r1_len, PMK_LEN);
  			return -1;
  		}
  		if (sha256_prf(pmk_r1, pmk_r1_len, "FT-PTK",
  			       buf, pos - buf, tmp, ptk_len) < 0)
  			return -1;
  	}
  	wpa_hexdump_key(MSG_DEBUG, "FT: PTK", tmp, ptk_len);
  
  	/*
  	 * PTKName = Truncate-128(SHA-256(PMKR1Name || "FT-PTKN" || SNonce ||
  	 *                                ANonce || BSSID || STA-ADDR))
  	 */
  	wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", pmk_r1_name, WPA_PMK_NAME_LEN);
  	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;
  
  	if (sha256_vector(6, addr, len, hash) < 0)
  		return -1;
  	os_memcpy(ptk_name, hash, WPA_PMK_NAME_LEN);
  
  	os_memcpy(ptk->kck, tmp, ptk->kck_len);
  	offset = ptk->kck_len;
  	os_memcpy(ptk->kek, tmp + offset, ptk->kek_len);
  	offset += ptk->kek_len;
  	os_memcpy(ptk->tk, tmp + offset, ptk->tk_len);
  	offset += ptk->tk_len;
  	os_memcpy(ptk->kck2, tmp + offset, ptk->kck2_len);
  	offset += ptk->kck2_len;
  	os_memcpy(ptk->kek2, tmp + offset, ptk->kek2_len);
  	offset += ptk->kek2_len;
  	os_memcpy(ptk->kdk, tmp + offset, ptk->kdk_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);
  	if (ptk->kck2_len)
  		wpa_hexdump_key(MSG_DEBUG, "FT: KCK2",
  				ptk->kck2, ptk->kck2_len);
  	if (ptk->kek2_len)
  		wpa_hexdump_key(MSG_DEBUG, "FT: KEK2",
  				ptk->kek2, ptk->kek2_len);
  	if (ptk->kdk_len)
  		wpa_hexdump_key(MSG_DEBUG, "FT: KDK", ptk->kdk, ptk->kdk_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);
  
  	forced_memzero(tmp, 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
   * @akmp: Negotiated key management protocol
   *
   * IEEE Std 802.11-2016 - 12.7.1.3 Pairwise key hierarchy
   * AKM: 00-0F-AC:5, 00-0F-AC:6, 00-0F-AC:14, 00-0F-AC:16
   * PMKID = Truncate-128(HMAC-SHA-256(PMK, "PMK Name" || AA || SPA))
   * AKM: 00-0F-AC:11
   * See rsn_pmkid_suite_b()
   * AKM: 00-0F-AC:12
   * See rsn_pmkid_suite_b_192()
   * AKM: 00-0F-AC:13, 00-0F-AC:15, 00-0F-AC:17
   * PMKID = Truncate-128(HMAC-SHA-384(PMK, "PMK Name" || AA || SPA))
   * Otherwise:
   * PMKID = Truncate-128(HMAC-SHA-1(PMK, "PMK Name" || AA || SPA))
   */
  void rsn_pmkid(const u8 *pmk, size_t pmk_len, const u8 *aa, const u8 *spa,
  	       u8 *pmkid, int akmp)
  {
  	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 (0) {
  #if defined(CONFIG_FILS) || defined(CONFIG_SHA384)
  	} else if (wpa_key_mgmt_sha384(akmp)) {
  		wpa_printf(MSG_DEBUG, "RSN: Derive PMKID using HMAC-SHA-384");
  		hmac_sha384_vector(pmk, pmk_len, 3, addr, len, hash);
  #endif /* CONFIG_FILS || CONFIG_SHA384 */
  	} else if (wpa_key_mgmt_sha256(akmp)) {
  		wpa_printf(MSG_DEBUG, "RSN: Derive PMKID using HMAC-SHA-256");
  		hmac_sha256_vector(pmk, pmk_len, 3, addr, len, hash);
  	} else {
  		wpa_printf(MSG_DEBUG, "RSN: Derive PMKID using HMAC-SHA-1");
  		hmac_sha1_vector(pmk, pmk_len, 3, addr, len, hash);
  	}
  	wpa_hexdump(MSG_DEBUG, "RSN: Derived PMKID", hash, PMKID_LEN);
  	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";
  #ifdef CONFIG_WEP
  	case WPA_CIPHER_WEP40:
  		return "WEP-40";
  	case WPA_CIPHER_WEP104:
  		return "WEP-104";
  #endif /* CONFIG_WEP */
  	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_AES_128_CMAC:
  		return "BIP";
  	case WPA_CIPHER_BIP_GMAC_128:
  		return "BIP-GMAC-128";
  	case WPA_CIPHER_BIP_GMAC_256:
  		return "BIP-GMAC-256";
  	case WPA_CIPHER_BIP_CMAC_256:
  		return "BIP-CMAC-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_IEEE8021X_SHA384:
  		return "FT-EAP-SHA384";
  	case WPA_KEY_MGMT_FT_PSK:
  		return "FT-PSK";
  #endif /* CONFIG_IEEE80211R */
  	case WPA_KEY_MGMT_IEEE8021X_SHA256:
  		return "WPA2-EAP-SHA256";
  	case WPA_KEY_MGMT_PSK_SHA256:
  		return "WPA2-PSK-SHA256";
  	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";
  	case WPA_KEY_MGMT_FILS_SHA256:
  		return "FILS-SHA256";
  	case WPA_KEY_MGMT_FILS_SHA384:
  		return "FILS-SHA384";
  	case WPA_KEY_MGMT_FT_FILS_SHA256:
  		return "FT-FILS-SHA256";
  	case WPA_KEY_MGMT_FT_FILS_SHA384:
  		return "FT-FILS-SHA384";
  	case WPA_KEY_MGMT_OWE:
  		return "OWE";
  	case WPA_KEY_MGMT_DPP:
  		return "DPP";
  	case WPA_KEY_MGMT_PASN:
  		return "PASN";
  	default:
  		return "UNKNOWN";
  	}
  }
  
  
  u32 wpa_akm_to_suite(int akm)
  {
  	if (akm & WPA_KEY_MGMT_FT_IEEE8021X_SHA384)
  		return RSN_AUTH_KEY_MGMT_FT_802_1X_SHA384;
  	if (akm & WPA_KEY_MGMT_FT_IEEE8021X)
  		return RSN_AUTH_KEY_MGMT_FT_802_1X;
  	if (akm & WPA_KEY_MGMT_FT_PSK)
  		return RSN_AUTH_KEY_MGMT_FT_PSK;
  	if (akm & WPA_KEY_MGMT_IEEE8021X_SHA256)
  		return RSN_AUTH_KEY_MGMT_802_1X_SHA256;
  	if (akm & WPA_KEY_MGMT_IEEE8021X)
  		return RSN_AUTH_KEY_MGMT_UNSPEC_802_1X;
  	if (akm & WPA_KEY_MGMT_PSK_SHA256)
  		return RSN_AUTH_KEY_MGMT_PSK_SHA256;
  	if (akm & WPA_KEY_MGMT_PSK)
  		return RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X;
  	if (akm & WPA_KEY_MGMT_CCKM)
  		return RSN_AUTH_KEY_MGMT_CCKM;
  	if (akm & WPA_KEY_MGMT_OSEN)
  		return RSN_AUTH_KEY_MGMT_OSEN;
  	if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B)
  		return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B;
  	if (akm & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
  		return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192;
  	if (akm & WPA_KEY_MGMT_FILS_SHA256)
  		return RSN_AUTH_KEY_MGMT_FILS_SHA256;
  	if (akm & WPA_KEY_MGMT_FILS_SHA384)
  		return RSN_AUTH_KEY_MGMT_FILS_SHA384;
  	if (akm & WPA_KEY_MGMT_FT_FILS_SHA256)
  		return RSN_AUTH_KEY_MGMT_FT_FILS_SHA256;
  	if (akm & WPA_KEY_MGMT_FT_FILS_SHA384)
  		return RSN_AUTH_KEY_MGMT_FT_FILS_SHA384;
  	if (akm & WPA_KEY_MGMT_SAE)
  		return RSN_AUTH_KEY_MGMT_SAE;
  	if (akm & WPA_KEY_MGMT_FT_SAE)
  		return RSN_AUTH_KEY_MGMT_FT_SAE;
  	if (akm & WPA_KEY_MGMT_OWE)
  		return RSN_AUTH_KEY_MGMT_OWE;
  	if (akm & WPA_KEY_MGMT_DPP)
  		return RSN_AUTH_KEY_MGMT_DPP;
  	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;
  }
  
  
  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, "RSN: Could not find RSNE in IEs data");
  		return -1;
  	}
  	wpa_hexdump(MSG_DEBUG, "RSN: RSNE 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,
  				   "RSN: Could not parse RSNE 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,
  				   "RSN: Remove %u old PMKID(s) from RSNE",
  				   num_pmkid);
  			after = rpos + 2 + num_pmkid * PMKID_LEN;
  			os_memmove(rpos + 2, after, end - 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, "RSN: RSNE after modification (PMKID inserted)",
  		    start, 2 + start[1]);
  
  	*ies_len += added;
  
  	return 0;
  }
  
  
  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;
  }
  
  
  enum wpa_alg 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_BIP_CMAC_128;
  	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)
  {
  #ifdef CONFIG_NO_TKIP
  	return cipher == WPA_CIPHER_CCMP_256 ||
  		cipher == WPA_CIPHER_GCMP_256 ||
  		cipher == WPA_CIPHER_CCMP ||
  		cipher == WPA_CIPHER_GCMP;
  #else /* CONFIG_NO_TKIP */
  	return cipher == WPA_CIPHER_CCMP_256 ||
  		cipher == WPA_CIPHER_GCMP_256 ||
  		cipher == WPA_CIPHER_CCMP ||
  		cipher == WPA_CIPHER_GCMP ||
  		cipher == WPA_CIPHER_TKIP;
  #endif /* CONFIG_NO_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;
  #ifndef CONFIG_NO_TKIP
  		else if (os_strcmp(start, "TKIP") == 0)
  			val |= WPA_CIPHER_TKIP;
  #endif /* CONFIG_NO_TKIP */
  #ifdef CONFIG_WEP
  		else if (os_strcmp(start, "WEP104") == 0)
  			val |= WPA_CIPHER_WEP104;
  		else if (os_strcmp(start, "WEP40") == 0)
  			val |= WPA_CIPHER_WEP40;
  #endif /* CONFIG_WEP */
  		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 if (os_strcmp(start, "AES-128-CMAC") == 0)
  			val |= WPA_CIPHER_AES_128_CMAC;
  		else if (os_strcmp(start, "BIP-GMAC-128") == 0)
  			val |= WPA_CIPHER_BIP_GMAC_128;
  		else if (os_strcmp(start, "BIP-GMAC-256") == 0)
  			val |= WPA_CIPHER_BIP_GMAC_256;
  		else if (os_strcmp(start, "BIP-CMAC-256") == 0)
  			val |= WPA_CIPHER_BIP_CMAC_256;
  		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_AES_128_CMAC) {
  		ret = os_snprintf(pos, end - pos, "%sAES-128-CMAC",
  				  pos == start ? "" : delim);
  		if (os_snprintf_error(end - pos, ret))
  			return -1;
  		pos += ret;
  	}
  	if (ciphers & WPA_CIPHER_BIP_GMAC_128) {
  		ret = os_snprintf(pos, end - pos, "%sBIP-GMAC-128",
  				  pos == start ? "" : delim);
  		if (os_snprintf_error(end - pos, ret))
  			return -1;
  		pos += ret;
  	}
  	if (ciphers & WPA_CIPHER_BIP_GMAC_256) {
  		ret = os_snprintf(pos, end - pos, "%sBIP-GMAC-256",
  				  pos == start ? "" : delim);
  		if (os_snprintf_error(end - pos, ret))
  			return -1;
  		pos += ret;
  	}
  	if (ciphers & WPA_CIPHER_BIP_CMAC_256) {
  		ret = os_snprintf(pos, end - pos, "%sBIP-CMAC-256",
  				  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;
  }
  
  
  #ifdef CONFIG_FILS
  int fils_domain_name_hash(const char *domain, u8 *hash)
  {
  	char buf[255], *wpos = buf;
  	const char *pos = domain;
  	size_t len;
  	const u8 *addr[1];
  	u8 mac[SHA256_MAC_LEN];
  
  	for (len = 0; len < sizeof(buf) && *pos; len++) {
  		if (isalpha(*pos) && isupper(*pos))
  			*wpos++ = tolower(*pos);
  		else
  			*wpos++ = *pos;
  		pos++;
  	}
  
  	addr[0] = (const u8 *) buf;
  	if (sha256_vector(1, addr, &len, mac) < 0)
  		return -1;
  	os_memcpy(hash, mac, 2);
  	return 0;
  }
  #endif /* CONFIG_FILS */
  
  
  /**
   * wpa_parse_vendor_specific - Parse Vendor Specific IEs
   * @pos: Pointer to the IE header
   * @end: Pointer to the end of the Key Data buffer
   * @ie: Pointer to parsed IE data
   */
  static void wpa_parse_vendor_specific(const u8 *pos, const u8 *end,
  				      struct wpa_eapol_ie_parse *ie)
  {
  	unsigned int oui;
  
  	if (pos[1] < 4) {
  		wpa_printf(MSG_MSGDUMP,
  			   "Too short vendor specific IE ignored (len=%u)",
  			   pos[1]);
  		return;
  	}
  
  	oui = WPA_GET_BE24(&pos[2]);
  	if (oui == OUI_MICROSOFT && pos[5] == WMM_OUI_TYPE && pos[1] > 4) {
  		if (pos[6] == WMM_OUI_SUBTYPE_INFORMATION_ELEMENT) {
  			ie->wmm = &pos[2];
  			ie->wmm_len = pos[1];
  			wpa_hexdump(MSG_DEBUG, "WPA: WMM IE",
  				    ie->wmm, ie->wmm_len);
  		} else if (pos[6] == WMM_OUI_SUBTYPE_PARAMETER_ELEMENT) {
  			ie->wmm = &pos[2];
  			ie->wmm_len = pos[1];
  			wpa_hexdump(MSG_DEBUG, "WPA: WMM Parameter Element",
  				    ie->wmm, ie->wmm_len);
  		}
  	}
  }
  
  
  /**
   * wpa_parse_generic - Parse EAPOL-Key Key Data Generic IEs
   * @pos: Pointer to the IE header
   * @ie: Pointer to parsed IE data
   * Returns: 0 on success, 1 if end mark is found, 2 if KDE is not recognized
   */
  static int wpa_parse_generic(const u8 *pos, struct wpa_eapol_ie_parse *ie)
  {
  	if (pos[1] == 0)
  		return 1;
  
  	if (pos[1] >= 6 &&
  	    RSN_SELECTOR_GET(pos + 2) == WPA_OUI_TYPE &&
  	    pos[2 + WPA_SELECTOR_LEN] == 1 &&
  	    pos[2 + WPA_SELECTOR_LEN + 1] == 0) {
  		ie->wpa_ie = pos;
  		ie->wpa_ie_len = pos[1] + 2;
  		wpa_hexdump(MSG_DEBUG, "WPA: WPA IE in EAPOL-Key",
  			    ie->wpa_ie, ie->wpa_ie_len);
  		return 0;
  	}
  
  	if (pos[1] >= 4 && WPA_GET_BE32(pos + 2) == OSEN_IE_VENDOR_TYPE) {
  		ie->osen = pos;
  		ie->osen_len = pos[1] + 2;
  		return 0;
  	}
  
  	if (pos[1] >= RSN_SELECTOR_LEN + PMKID_LEN &&
  	    RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_PMKID) {
  		ie->pmkid = pos + 2 + RSN_SELECTOR_LEN;
  		wpa_hexdump(MSG_DEBUG, "WPA: PMKID in EAPOL-Key",
  			    pos, pos[1] + 2);
  		return 0;
  	}
  
  	if (pos[1] >= RSN_SELECTOR_LEN + 2 &&
  	    RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_KEYID) {
  		ie->key_id = pos + 2 + RSN_SELECTOR_LEN;
  		wpa_hexdump(MSG_DEBUG, "WPA: KeyID in EAPOL-Key",
  			    pos, pos[1] + 2);
  		return 0;
  	}
  
  	if (pos[1] > RSN_SELECTOR_LEN + 2 &&
  	    RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_GROUPKEY) {
  		ie->gtk = pos + 2 + RSN_SELECTOR_LEN;
  		ie->gtk_len = pos[1] - RSN_SELECTOR_LEN;
  		wpa_hexdump_key(MSG_DEBUG, "WPA: GTK in EAPOL-Key",
  				pos, pos[1] + 2);
  		return 0;
  	}
  
  	if (pos[1] > RSN_SELECTOR_LEN + 2 &&
  	    RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_MAC_ADDR) {
  		ie->mac_addr = pos + 2 + RSN_SELECTOR_LEN;
  		ie->mac_addr_len = pos[1] - RSN_SELECTOR_LEN;
  		wpa_hexdump(MSG_DEBUG, "WPA: MAC Address in EAPOL-Key",
  			    pos, pos[1] + 2);
  		return 0;
  	}
  
  	if (pos[1] > RSN_SELECTOR_LEN + 2 &&
  	    RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_IGTK) {
  		ie->igtk = pos + 2 + RSN_SELECTOR_LEN;
  		ie->igtk_len = pos[1] - RSN_SELECTOR_LEN;
  		wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK in EAPOL-Key",
  				pos, pos[1] + 2);
  		return 0;
  	}
  
  	if (pos[1] > RSN_SELECTOR_LEN + 2 &&
  	    RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_BIGTK) {
  		ie->bigtk = pos + 2 + RSN_SELECTOR_LEN;
  		ie->bigtk_len = pos[1] - RSN_SELECTOR_LEN;
  		wpa_hexdump_key(MSG_DEBUG, "WPA: BIGTK in EAPOL-Key",
  				pos, pos[1] + 2);
  		return 0;
  	}
  
  	if (pos[1] >= RSN_SELECTOR_LEN + 1 &&
  	    RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_REQ) {
  		ie->ip_addr_req = pos + 2 + RSN_SELECTOR_LEN;
  		wpa_hexdump(MSG_DEBUG, "WPA: IP Address Request in EAPOL-Key",
  			    ie->ip_addr_req, pos[1] - RSN_SELECTOR_LEN);
  		return 0;
  	}
  
  	if (pos[1] >= RSN_SELECTOR_LEN + 3 * 4 &&
  	    RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_ALLOC) {
  		ie->ip_addr_alloc = pos + 2 + RSN_SELECTOR_LEN;
  		wpa_hexdump(MSG_DEBUG,
  			    "WPA: IP Address Allocation in EAPOL-Key",
  			    ie->ip_addr_alloc, pos[1] - RSN_SELECTOR_LEN);
  		return 0;
  	}
  
  	if (pos[1] > RSN_SELECTOR_LEN + 2 &&
  	    RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_OCI) {
  		ie->oci = pos + 2 + RSN_SELECTOR_LEN;
  		ie->oci_len = pos[1] - RSN_SELECTOR_LEN;
  		wpa_hexdump(MSG_DEBUG, "WPA: OCI KDE in EAPOL-Key",
  			    pos, pos[1] + 2);
  		return 0;
  	}
  
  	if (pos[1] >= RSN_SELECTOR_LEN + 1 &&
  	    RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_TRANSITION_DISABLE) {
  		ie->transition_disable = pos + 2 + RSN_SELECTOR_LEN;
  		ie->transition_disable_len = pos[1] - RSN_SELECTOR_LEN;
  		wpa_hexdump(MSG_DEBUG,
  			    "WPA: Transition Disable KDE in EAPOL-Key",
  			    pos, pos[1] + 2);
  		return 0;
  	}
  
  	if (pos[1] >= RSN_SELECTOR_LEN + 2 &&
  	    RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_DPP) {
  		ie->dpp_kde = pos + 2 + RSN_SELECTOR_LEN;
  		ie->dpp_kde_len = pos[1] - RSN_SELECTOR_LEN;
  		wpa_hexdump(MSG_DEBUG, "WPA: DPP KDE in EAPOL-Key",
  			    pos, pos[1] + 2);
  		return 0;
  	}
  
  	return 2;
  }
  
  
  /**
   * wpa_parse_kde_ies - Parse EAPOL-Key Key Data IEs
   * @buf: Pointer to the Key Data buffer
   * @len: Key Data Length
   * @ie: Pointer to parsed IE data
   * Returns: 0 on success, -1 on failure
   */
  int wpa_parse_kde_ies(const u8 *buf, size_t len, struct wpa_eapol_ie_parse *ie)
  {
  	const u8 *pos, *end;
  	int ret = 0;
  
  	os_memset(ie, 0, sizeof(*ie));
  	for (pos = buf, end = pos + len; end - pos > 1; pos += 2 + pos[1]) {
  		if (pos[0] == 0xdd &&
  		    ((pos == buf + len - 1) || pos[1] == 0)) {
  			/* Ignore padding */
  			break;
  		}
  		if (2 + pos[1] > end - pos) {
  			wpa_printf(MSG_DEBUG,
  				   "WPA: EAPOL-Key Key Data underflow (ie=%d len=%d pos=%d)",
  				   pos[0], pos[1], (int) (pos - buf));
  			wpa_hexdump_key(MSG_DEBUG, "WPA: Key Data", buf, len);
  			ret = -1;
  			break;
  		}
  		if (*pos == WLAN_EID_RSN) {
  			ie->rsn_ie = pos;
  			ie->rsn_ie_len = pos[1] + 2;
  			wpa_hexdump(MSG_DEBUG, "WPA: RSN IE in EAPOL-Key",
  				    ie->rsn_ie, ie->rsn_ie_len);
  		} else if (*pos == WLAN_EID_RSNX) {
  			ie->rsnxe = pos;
  			ie->rsnxe_len = pos[1] + 2;
  			wpa_hexdump(MSG_DEBUG, "WPA: RSNXE in EAPOL-Key",
  				    ie->rsnxe, ie->rsnxe_len);
  		} else if (*pos == WLAN_EID_MOBILITY_DOMAIN) {
  			ie->mdie = pos;
  			ie->mdie_len = pos[1] + 2;
  			wpa_hexdump(MSG_DEBUG, "WPA: MDIE in EAPOL-Key",
  				    ie->mdie, ie->mdie_len);
  		} else if (*pos == WLAN_EID_FAST_BSS_TRANSITION) {
  			ie->ftie = pos;
  			ie->ftie_len = pos[1] + 2;
  			wpa_hexdump(MSG_DEBUG, "WPA: FTIE in EAPOL-Key",
  				    ie->ftie, ie->ftie_len);
  		} else if (*pos == WLAN_EID_TIMEOUT_INTERVAL && pos[1] >= 5) {
  			if (pos[2] == WLAN_TIMEOUT_REASSOC_DEADLINE) {
  				ie->reassoc_deadline = pos;
  				wpa_hexdump(MSG_DEBUG, "WPA: Reassoc Deadline "
  					    "in EAPOL-Key",
  					    ie->reassoc_deadline, pos[1] + 2);
  			} else if (pos[2] == WLAN_TIMEOUT_KEY_LIFETIME) {
  				ie->key_lifetime = pos;
  				wpa_hexdump(MSG_DEBUG, "WPA: KeyLifetime "
  					    "in EAPOL-Key",
  					    ie->key_lifetime, pos[1] + 2);
  			} else {
  				wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized "
  					    "EAPOL-Key Key Data IE",
  					    pos, 2 + pos[1]);
  			}
  		} else if (*pos == WLAN_EID_LINK_ID) {
  			if (pos[1] >= 18) {
  				ie->lnkid = pos;
  				ie->lnkid_len = pos[1] + 2;
  			}
  		} else if (*pos == WLAN_EID_EXT_CAPAB) {
  			ie->ext_capab = pos;
  			ie->ext_capab_len = pos[1] + 2;
  		} else if (*pos == WLAN_EID_SUPP_RATES) {
  			ie->supp_rates = pos;
  			ie->supp_rates_len = pos[1] + 2;
  		} else if (*pos == WLAN_EID_EXT_SUPP_RATES) {
  			ie->ext_supp_rates = pos;
  			ie->ext_supp_rates_len = pos[1] + 2;
  		} else if (*pos == WLAN_EID_HT_CAP &&
  			   pos[1] >= sizeof(struct ieee80211_ht_capabilities)) {
  			ie->ht_capabilities = pos + 2;
  		} else if (*pos == WLAN_EID_VHT_AID) {
  			if (pos[1] >= 2)
  				ie->aid = WPA_GET_LE16(pos + 2) & 0x3fff;
  		} else if (*pos == WLAN_EID_VHT_CAP &&
  			   pos[1] >= sizeof(struct ieee80211_vht_capabilities))
  		{
  			ie->vht_capabilities = pos + 2;
  		} else if (*pos == WLAN_EID_EXTENSION &&
  			   pos[1] >= 1 + IEEE80211_HE_CAPAB_MIN_LEN &&
  			   pos[2] == WLAN_EID_EXT_HE_CAPABILITIES) {
  			ie->he_capabilities = pos + 3;
  			ie->he_capab_len = pos[1] - 1;
  		} else if (*pos == WLAN_EID_EXTENSION &&
  			   pos[1] >= 1 +
  			   sizeof(struct ieee80211_he_6ghz_band_cap) &&
  			   pos[2] == WLAN_EID_EXT_HE_6GHZ_BAND_CAP) {
  			ie->he_6ghz_capabilities = pos + 3;
  		} else if (*pos == WLAN_EID_QOS && pos[1] >= 1) {
  			ie->qosinfo = pos[2];
  		} else if (*pos == WLAN_EID_SUPPORTED_CHANNELS) {
  			ie->supp_channels = pos + 2;
  			ie->supp_channels_len = pos[1];
  		} else if (*pos == WLAN_EID_SUPPORTED_OPERATING_CLASSES) {
  			/*
  			 * The value of the Length field of the Supported
  			 * Operating Classes element is between 2 and 253.
  			 * Silently skip invalid elements to avoid interop
  			 * issues when trying to use the value.
  			 */
  			if (pos[1] >= 2 && pos[1] <= 253) {
  				ie->supp_oper_classes = pos + 2;
  				ie->supp_oper_classes_len = pos[1];
  			}
  		} else if (*pos == WLAN_EID_VENDOR_SPECIFIC) {
  			ret = wpa_parse_generic(pos, ie);
  			if (ret == 1) {
  				/* end mark found */
  				ret = 0;
  				break;
  			}
  
  			if (ret == 2) {
  				/* not a known KDE */
  				wpa_parse_vendor_specific(pos, end, ie);
  			}
  
  			ret = 0;
  		} else {
  			wpa_hexdump(MSG_DEBUG,
  				    "WPA: Unrecognized EAPOL-Key Key Data IE",
  				    pos, 2 + pos[1]);
  		}
  	}
  
  	return ret;
  }
  
  
  #ifdef CONFIG_PASN
  
  /*
   * wpa_pasn_build_auth_header - Add the MAC header and initialize Authentication
   * frame for PASN
   *
   * @buf: Buffer in which the header will be added
   * @bssid: The BSSID of the AP
   * @src: Source address
   * @dst: Destination address
   * @trans_seq: Authentication transaction sequence number
   * @status: Authentication status
   */
  void wpa_pasn_build_auth_header(struct wpabuf *buf, const u8 *bssid,
  				const u8 *src, const u8 *dst,
  				u8 trans_seq, u16 status)
  {
  	struct ieee80211_mgmt *auth;
  
  	wpa_printf(MSG_DEBUG, "PASN: Add authentication header. trans_seq=%u",
  		   trans_seq);
  
  	auth = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
  					u.auth.variable));
  
  	auth->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
  					   (WLAN_FC_STYPE_AUTH << 4));
  
  	os_memcpy(auth->da, dst, ETH_ALEN);
  	os_memcpy(auth->sa, src, ETH_ALEN);
  	os_memcpy(auth->bssid, bssid, ETH_ALEN);
  	auth->seq_ctrl = 0;
  
  	auth->u.auth.auth_alg = host_to_le16(WLAN_AUTH_PASN);
  	auth->u.auth.auth_transaction = host_to_le16(trans_seq);
  	auth->u.auth.status_code = host_to_le16(status);
  }
  
  
  /*
   * wpa_pasn_add_rsne - Add an RSNE for PASN authentication
   * @buf: Buffer in which the IE will be added
   * @pmkid: Optional PMKID. Can be NULL.
   * @akmp: Authentication and key management protocol
   * @cipher: The cipher suite
   */
  int wpa_pasn_add_rsne(struct wpabuf *buf, const u8 *pmkid, int akmp, int cipher)
  {
  	struct rsn_ie_hdr *hdr;
  	u32 suite;
  	u16 capab;
  	u8 *pos;
  	u8 rsne_len;
  
  	wpa_printf(MSG_DEBUG, "PASN: Add RSNE");
  
  	rsne_len = sizeof(*hdr) + RSN_SELECTOR_LEN +
  		2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN +
  		2 + RSN_SELECTOR_LEN + 2 + (pmkid ? PMKID_LEN : 0);
  
  	if (wpabuf_tailroom(buf) < rsne_len)
  		return -1;
  	hdr = wpabuf_put(buf, rsne_len);
  	hdr->elem_id = WLAN_EID_RSN;
  	hdr->len = rsne_len - 2;
  	WPA_PUT_LE16(hdr->version, RSN_VERSION);
  	pos = (u8 *) (hdr + 1);
  
  	/* Group addressed data is not allowed */
  	RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED);
  	pos += RSN_SELECTOR_LEN;
  
  	/* Add the pairwise cipher */
  	WPA_PUT_LE16(pos, 1);
  	pos += 2;
  	suite = wpa_cipher_to_suite(WPA_PROTO_RSN, cipher);
  	RSN_SELECTOR_PUT(pos, suite);
  	pos += RSN_SELECTOR_LEN;
  
  	/* Add the AKM suite */
  	WPA_PUT_LE16(pos, 1);
  	pos += 2;
  
  	switch (akmp) {
  	case WPA_KEY_MGMT_PASN:
  		RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PASN);
  		break;
  #ifdef CONFIG_SAE
  	case WPA_KEY_MGMT_SAE:
  		RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_SAE);
  		break;
  #endif /* CONFIG_SAE */
  #ifdef CONFIG_FILS
  	case WPA_KEY_MGMT_FILS_SHA256:
  		RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FILS_SHA256);
  		break;
  	case WPA_KEY_MGMT_FILS_SHA384:
  		RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FILS_SHA384);
  		break;
  #endif /* CONFIG_FILS */
  #ifdef CONFIG_IEEE80211R
  	case WPA_KEY_MGMT_FT_PSK:
  		RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_PSK);
  		break;
  	case WPA_KEY_MGMT_FT_IEEE8021X:
  		RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X);
  		break;
  	case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
  		RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X_SHA384);
  		break;
  #endif /* CONFIG_IEEE80211R */
  	default:
  		wpa_printf(MSG_ERROR, "PASN: Invalid AKMP=0x%x", akmp);
  		return -1;
  	}
  	pos += RSN_SELECTOR_LEN;
  
  	/* RSN Capabilities: PASN mandates both MFP capable and required */
  	capab = WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR;
  	WPA_PUT_LE16(pos, capab);
  	pos += 2;
  
  	if (pmkid) {
  		wpa_printf(MSG_DEBUG, "PASN: Adding PMKID");
  
  		WPA_PUT_LE16(pos, 1);
  		pos += 2;
  		os_memcpy(pos, pmkid, PMKID_LEN);
  		pos += PMKID_LEN;
  	} else {
  		WPA_PUT_LE16(pos, 0);
  		pos += 2;
  	}
  
  	/* Group addressed management is not allowed */
  	RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED);
  
  	return 0;
  }
  
  
  /*
   * wpa_pasn_add_parameter_ie - Add PASN Parameters IE for PASN authentication
   * @buf: Buffer in which the IE will be added
   * @pasn_group: Finite Cyclic Group ID for PASN authentication
   * @wrapped_data_format: Format of the data in the Wrapped Data IE
   * @pubkey: A buffer holding the local public key. Can be NULL
   * @compressed: In case pubkey is included, indicates if the public key is
   *     compressed (only x coordinate is included) or not (both x and y
   *     coordinates are included)
   * @comeback: A buffer holding the comeback token. Can be NULL
   * @after: If comeback is set, defined the comeback time in seconds. -1 to not
   *	include the Comeback After field (frames from non-AP STA).
   */
  void wpa_pasn_add_parameter_ie(struct wpabuf *buf, u16 pasn_group,
  			       u8 wrapped_data_format,
  			       const struct wpabuf *pubkey, bool compressed,
  			       const struct wpabuf *comeback, int after)
  {
  	struct pasn_parameter_ie *params;
  
  	wpa_printf(MSG_DEBUG, "PASN: Add PASN Parameters element");
  
  	params = wpabuf_put(buf, sizeof(*params));
  
  	params->id = WLAN_EID_EXTENSION;
  	params->len = sizeof(*params) - 2;
  	params->id_ext = WLAN_EID_EXT_PASN_PARAMS;
  	params->control = 0;
  	params->wrapped_data_format = wrapped_data_format;
  
  	if (comeback) {
  		wpa_printf(MSG_DEBUG, "PASN: Adding comeback data");
  
  		/*
  		 * 2 octets for the 'after' field + 1 octet for the length +
  		 * actual cookie data
  		 */
  		if (after >= 0)
  			params->len += 2;
  		params->len += 1 + wpabuf_len(comeback);
  		params->control |= WPA_PASN_CTRL_COMEBACK_INFO_PRESENT;
  
  		if (after >= 0)
  			wpabuf_put_le16(buf, after);
  		wpabuf_put_u8(buf, wpabuf_len(comeback));
  		wpabuf_put_buf(buf, comeback);
  	}
  
  	if (pubkey) {
  		wpa_printf(MSG_DEBUG,
  			   "PASN: Adding public key and group ID %u",
  			   pasn_group);
  
  		/*
  		 * 2 octets for the finite cyclic group + 2 octets public key
  		 * length + 1 octet for the compressed/uncompressed indication +
  		 * the actual key.
  		 */
  		params->len += 2 + 1 + 1 + wpabuf_len(pubkey);
  		params->control |= WPA_PASN_CTRL_GROUP_AND_KEY_PRESENT;
  
  		wpabuf_put_le16(buf, pasn_group);
  
  		/*
  		 * The first octet indicates whether the public key is
  		 * compressed, as defined in RFC 5480 section 2.2.
  		 */
  		wpabuf_put_u8(buf, wpabuf_len(pubkey) + 1);
  		wpabuf_put_u8(buf, compressed ? WPA_PASN_PUBKEY_COMPRESSED_0 :
  			      WPA_PASN_PUBKEY_UNCOMPRESSED);
  
  		wpabuf_put_buf(buf, pubkey);
  	}
  }
  
  /*
   * wpa_pasn_add_wrapped_data - Add a Wrapped Data IE to PASN Authentication
   * frame. If needed, the Wrapped Data IE would be fragmented.
   *
   * @buf: Buffer in which the IE will be added
   * @wrapped_data_buf: Buffer holding the wrapped data
   */
  int wpa_pasn_add_wrapped_data(struct wpabuf *buf,
  			      struct wpabuf *wrapped_data_buf)
  {
  	const u8 *data;
  	size_t data_len;
  	u8 len;
  
  	if (!wrapped_data_buf)
  		return 0;
  
  	wpa_printf(MSG_DEBUG, "PASN: Add wrapped data");
  
  	data = wpabuf_head_u8(wrapped_data_buf);
  	data_len = wpabuf_len(wrapped_data_buf);
  
  	/* nothing to add */
  	if (!data_len)
  		return 0;
  
  	if (data_len <= 254)
  		len = 1 + data_len;
  	else
  		len = 255;
  
  	if (wpabuf_tailroom(buf) < 3 + data_len)
  		return -1;
  
  	wpabuf_put_u8(buf, WLAN_EID_EXTENSION);
  	wpabuf_put_u8(buf, len);
  	wpabuf_put_u8(buf, WLAN_EID_EXT_WRAPPED_DATA);
  	wpabuf_put_data(buf, data, len - 1);
  
  	data += len - 1;
  	data_len -= len - 1;
  
  	while (data_len) {
  		if (wpabuf_tailroom(buf) < 1 + data_len)
  			return -1;
  		wpabuf_put_u8(buf, WLAN_EID_FRAGMENT);
  		len = data_len > 255 ? 255 : data_len;
  		wpabuf_put_u8(buf, len);
  		wpabuf_put_data(buf, data, len);
  		data += len;
  		data_len -= len;
  	}
  
  	return 0;
  }
  
  
  /*
   * wpa_pasn_validate_rsne - Validate PSAN specific data of RSNE
   * @data: Parsed representation of an RSNE
   * Returns -1 for invalid data; otherwise 0
   */
  int wpa_pasn_validate_rsne(const struct wpa_ie_data *data)
  {
  	u16 capab = WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR;
  
  	if (data->proto != WPA_PROTO_RSN)
  		return -1;
  
  	if ((data->capabilities & capab) != capab) {
  		wpa_printf(MSG_DEBUG, "PASN: Invalid RSNE capabilities");
  		return -1;
  	}
  
  	if (!data->has_group || data->group_cipher != WPA_CIPHER_GTK_NOT_USED) {
  		wpa_printf(MSG_DEBUG, "PASN: Invalid group data cipher");
  		return -1;
  	}
  
  	if (!data->has_pairwise || !data->pairwise_cipher ||
  	    (data->pairwise_cipher & (data->pairwise_cipher - 1))) {
  		wpa_printf(MSG_DEBUG, "PASN: No valid pairwise suite");
  		return -1;
  	}
  
  	switch (data->key_mgmt) {
  #ifdef CONFIG_SAE
  	case WPA_KEY_MGMT_SAE:
  	/* fall through */
  #endif /* CONFIG_SAE */
  #ifdef CONFIG_FILS
  	case WPA_KEY_MGMT_FILS_SHA256:
  	case WPA_KEY_MGMT_FILS_SHA384:
  	/* fall through */
  #endif /* CONFIG_FILS */
  #ifdef CONFIG_IEEE80211R
  	case WPA_KEY_MGMT_FT_PSK:
  	case WPA_KEY_MGMT_FT_IEEE8021X:
  	case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
  	/* fall through */
  #endif /* CONFIG_IEEE80211R */
  	case WPA_KEY_MGMT_PASN:
  		break;
  	default:
  		wpa_printf(MSG_ERROR, "PASN: invalid key_mgmt: 0x%0x",
  			   data->key_mgmt);
  		return -1;
  	}
  
  	if (data->mgmt_group_cipher != WPA_CIPHER_GTK_NOT_USED) {
  		wpa_printf(MSG_DEBUG, "PASN: Invalid group mgmt cipher");
  		return -1;
  	}
  
  	if (data->num_pmkid > 1) {
  		wpa_printf(MSG_DEBUG, "PASN: Invalid number of PMKIDs");
  		return -1;
  	}
  
  	return 0;
  }
  
  
  /*
   * wpa_pasn_parse_parameter_ie - Validates PASN Parameters IE
   * @data: Pointer to the PASN Parameters IE (starting with the EID).
   * @len: Length of the data in the PASN Parameters IE
   * @from_ap: Whether this was received from an AP
   * @pasn_params: On successful return would hold the parsed PASN parameters.
   * Returns: -1 for invalid data; otherwise 0
   *
   * Note: On successful return, the pointers in &pasn_params point to the data in
   * the IE and are not locally allocated (so they should not be freed etc.).
   */
  int wpa_pasn_parse_parameter_ie(const u8 *data, u8 len, bool from_ap,
  				struct wpa_pasn_params_data *pasn_params)
  {
  	struct pasn_parameter_ie *params = (struct pasn_parameter_ie *) data;
  	const u8 *pos = (const u8 *) (params + 1);
  
  	if (!pasn_params) {
  		wpa_printf(MSG_DEBUG, "PASN: Invalid params");
  		return -1;
  	}
  
  	if (!params || ((size_t) (params->len + 2) < sizeof(*params)) ||
  	    len < sizeof(*params) || params->len + 2 != len) {
  		wpa_printf(MSG_DEBUG,
  			   "PASN: Invalid parameters IE. len=(%u, %u)",
  			   params ? params->len : 0, len);
  		return -1;
  	}
  
  	os_memset(pasn_params, 0, sizeof(*pasn_params));
  
  	switch (params->wrapped_data_format) {
  	case WPA_PASN_WRAPPED_DATA_NO:
  	case WPA_PASN_WRAPPED_DATA_SAE:
  	case WPA_PASN_WRAPPED_DATA_FILS_SK:
  	case WPA_PASN_WRAPPED_DATA_FT:
  		break;
  	default:
  		wpa_printf(MSG_DEBUG, "PASN: Invalid wrapped data format");
  		return -1;
  	}
  
  	pasn_params->wrapped_data_format = params->wrapped_data_format;
  
  	len -= sizeof(*params);
  
  	if (params->control & WPA_PASN_CTRL_COMEBACK_INFO_PRESENT) {
  		if (from_ap) {
  			if (len < 2) {
  				wpa_printf(MSG_DEBUG,
  					   "PASN: Invalid Parameters IE: Truncated Comeback After");
  				return -1;
  			}
  			pasn_params->after = WPA_GET_LE16(pos);
  			pos += 2;
  			len -= 2;
  		}
  
  		if (len < 1 || len < 1 + *pos) {
  			wpa_printf(MSG_DEBUG,
  				   "PASN: Invalid Parameters IE: comeback len");
  			return -1;
  		}
  
  		pasn_params->comeback_len = *pos++;
  		len--;
  		pasn_params->comeback = pos;
  		len -=  pasn_params->comeback_len;
  		pos += pasn_params->comeback_len;
  	}
  
  	if (params->control & WPA_PASN_CTRL_GROUP_AND_KEY_PRESENT) {
  		if (len < 3 || len < 3 + pos[2]) {
  			wpa_printf(MSG_DEBUG,
  				   "PASN: Invalid Parameters IE: group and key");
  			return -1;
  		}
  
  		pasn_params->group = WPA_GET_LE16(pos);
  		pos += 2;
  		len -= 2;
  		pasn_params->pubkey_len = *pos++;
  		len--;
  		pasn_params->pubkey = pos;
  		len -= pasn_params->pubkey_len;
  		pos += pasn_params->pubkey_len;
  	}
  
  	if (len) {
  		wpa_printf(MSG_DEBUG,
  			   "PASN: Invalid Parameters IE. Bytes left=%u", len);
  		return -1;
  	}
  
  	return 0;
  }
  
  
  void wpa_pasn_add_rsnxe(struct wpabuf *buf, u16 capab)
  {
  	size_t flen;
  
  	flen = (capab & 0xff00) ? 2 : 1;
  	if (!capab)
  		return; /* no supported extended RSN capabilities */
  	if (wpabuf_tailroom(buf) < 2 + flen)
  		return;
  	capab |= flen - 1; /* bit 0-3 = Field length (n - 1) */
  
  	wpabuf_put_u8(buf, WLAN_EID_RSNX);
  	wpabuf_put_u8(buf, flen);
  	wpabuf_put_u8(buf, capab & 0x00ff);
  	capab >>= 8;
  	if (capab)
  		wpabuf_put_u8(buf, capab);
  }
  
  #endif /* CONFIG_PASN */
  