Merged EAP-AKA' into eap_aka.c and added it to defconfig/ChangeLog

hostapd/ChangeLog

@@ -15,6 +15,7 @@ ChangeLog for hostapd
 	  information (added if ieee80211d=1 in configuration)
 	* fixed WEP authentication (both Open System and Shared Key) with
 	  mac80211
+	* added support for EAP-AKA' (draft-arkko-eap-aka-kdf)
 
 2008-11-23 - v0.6.6
 	* added a new configuration option, wpa_ptk_rekey, that can be used to

hostapd/Makefile

@@ -214,8 +214,6 @@ endif
 
 ifdef CONFIG_EAP_AKA_PRIME
 CFLAGS += -DEAP_AKA_PRIME
-OBJS += ../src/eap_server/eap_aka_prime.o
-CONFIG_EAP_SIM_COMMON=y
 endif
 
 ifdef CONFIG_EAP_SIM_COMMON

hostapd/defconfig

@@ -80,6 +80,10 @@ CONFIG_EAP_TTLS=y
 # EAP-AKA for the integrated EAP server
 #CONFIG_EAP_AKA=y
 
+# EAP-AKA' for the integrated EAP server
+# This requires CONFIG_EAP_AKA to be enabled, too.
+#CONFIG_EAP_AKA_PRIME=y
+
 # EAP-PAX for the integrated EAP server
 #CONFIG_EAP_PAX=y
 

src/eap_common/eap_sim_common.h

@@ -94,6 +94,7 @@ int eap_sim_verify_mac(const u8 *k_aut, const struct wpabuf *req,
 void eap_sim_add_mac(const u8 *k_aut, const u8 *msg, size_t msg_len, u8 *mac,
 		     const u8 *extra, size_t extra_len);
 
+#ifdef EAP_AKA_PRIME
 void eap_aka_prime_derive_keys(const u8 *identity, size_t identity_len,
 			       const u8 *ik, const u8 *ck, u8 *k_encr,
 			       u8 *k_aut, u8 *k_re, u8 *msk, u8 *emsk);
@@ -109,6 +110,32 @@ void eap_sim_add_mac_sha256(const u8 *k_aut, const u8 *msg, size_t msg_len,
 void eap_aka_prime_derive_ck_ik_prime(u8 *ck, u8 *ik, const u8 *sqn_ak,
 				      const u8 *network_name,
 				      size_t network_name_len);
+#else /* EAP_AKA_PRIME */
+static inline void eap_aka_prime_derive_keys(const u8 *identity,
+					     size_t identity_len,
+					     const u8 *ik, const u8 *ck,
+					     u8 *k_encr, u8 *k_aut, u8 *k_re,
+					     u8 *msk, u8 *emsk)
+{
+}
+
+static inline int eap_aka_prime_derive_keys_reauth(const u8 *k_re, u16 counter,
+						   const u8 *identity,
+						   size_t identity_len,
+						   const u8 *nonce_s, u8 *msk,
+						   u8 *emsk)
+{
+	return -1;
+}
+
+static inline int eap_sim_verify_mac_sha256(const u8 *k_aut,
+					    const struct wpabuf *req,
+					    const u8 *mac, const u8 *extra,
+					    size_t extra_len)
+{
+	return -1;
+}
+#endif /* EAP_AKA_PRIME */
 
 
 /* EAP-SIM/AKA Attributes (0..127 non-skippable) */

src/eap_peer/eap_aka.c

@@ -1,6 +1,6 @@
 /*
- * EAP peer method: EAP-AKA (RFC 4187)
+ * EAP peer method: EAP-AKA (RFC 4187) and EAP-AKA' (draft-arkko-eap-aka-kdf)
- * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -19,6 +19,7 @@
 #include "pcsc_funcs.h"
 #include "eap_common/eap_sim_common.h"
 #include "sha1.h"
+#include "sha256.h"
 #include "crypto.h"
 #include "eap_peer/eap_config.h"
 #ifdef CONFIG_USIM_SIMULATOR
@@ -31,8 +32,9 @@ struct eap_aka_data {
 	size_t res_len;
 	u8 nonce_s[EAP_SIM_NONCE_S_LEN];
 	u8 mk[EAP_SIM_MK_LEN];
-	u8 k_aut[EAP_SIM_K_AUT_LEN];
+	u8 k_aut[EAP_AKA_PRIME_K_AUT_LEN];
 	u8 k_encr[EAP_SIM_K_ENCR_LEN];
+	u8 k_re[EAP_AKA_PRIME_K_RE_LEN]; /* EAP-AKA' only */
 	u8 msk[EAP_SIM_KEYING_DATA_LEN];
 	u8 emsk[EAP_EMSK_LEN];
 	u8 rand[EAP_AKA_RAND_LEN], autn[EAP_AKA_AUTN_LEN];
@@ -54,6 +56,10 @@ struct eap_aka_data {
 	struct wpabuf *id_msgs;
 	int prev_id;
 	int result_ind, use_result_ind;
+	u8 eap_method;
+	u8 *network_name;
+	size_t network_name_len;
+	u16 kdf;
 };
 
 
@@ -96,6 +102,8 @@ static void * eap_aka_init(struct eap_sm *sm)
 	if (data == NULL)
 		return NULL;
 
+	data->eap_method = EAP_TYPE_AKA;
+
 	eap_aka_state(data, CONTINUE);
 	data->prev_id = -1;
 
@@ -105,6 +113,18 @@ static void * eap_aka_init(struct eap_sm *sm)
 }
 
 
+#ifdef EAP_AKA_PRIME
+static void * eap_aka_prime_init(struct eap_sm *sm)
+{
+	struct eap_aka_data *data = eap_aka_init(sm);
+	if (data == NULL)
+		return NULL;
+	data->eap_method = EAP_TYPE_AKA_PRIME;
+	return data;
+}
+#endif /* EAP_AKA_PRIME */
+
+
 static void eap_aka_deinit(struct eap_sm *sm, void *priv)
 {
 	struct eap_aka_data *data = priv;
@@ -113,6 +133,7 @@ static void eap_aka_deinit(struct eap_sm *sm, void *priv)
 		os_free(data->reauth_id);
 		os_free(data->last_eap_identity);
 		wpabuf_free(data->id_msgs);
+		os_free(data->network_name);
 		os_free(data);
 	}
 }
@@ -302,7 +323,7 @@ static void eap_aka_add_checkcode(struct eap_aka_data *data,
 {
 	const u8 *addr;
 	size_t len;
-	u8 hash[SHA1_MAC_LEN];
+	u8 hash[SHA256_MAC_LEN];
 
 	wpa_printf(MSG_DEBUG, "   AT_CHECKCODE");
 
@@ -315,14 +336,18 @@ static void eap_aka_add_checkcode(struct eap_aka_data *data,
 		return;
 	}
 
-	/* Checkcode is SHA1 hash over all EAP-AKA/Identity packets. */
+	/* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */
 	addr = wpabuf_head(data->id_msgs);
 	len = wpabuf_len(data->id_msgs);
 	wpa_hexdump(MSG_MSGDUMP, "EAP-AKA: AT_CHECKCODE data", addr, len);
+	if (data->eap_method == EAP_TYPE_AKA_PRIME)
+		sha256_vector(1, &addr, &len, hash);
+	else
 		sha1_vector(1, &addr, &len, hash);
 
 	eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, hash,
-			EAP_AKA_CHECKCODE_LEN);
+			data->eap_method == EAP_TYPE_AKA_PRIME ?
+			EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN);
 }
 
 
@@ -331,7 +356,8 @@ static int eap_aka_verify_checkcode(struct eap_aka_data *data,
 {
 	const u8 *addr;
 	size_t len;
-	u8 hash[SHA1_MAC_LEN];
+	u8 hash[SHA256_MAC_LEN];
+	size_t hash_len;
 
 	if (checkcode == NULL)
 		return -1;
@@ -346,19 +372,25 @@ static int eap_aka_verify_checkcode(struct eap_aka_data *data,
 		return 0;
 	}
 
-	if (checkcode_len != EAP_AKA_CHECKCODE_LEN) {
+	hash_len = data->eap_method == EAP_TYPE_AKA_PRIME ?
+		EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN;
+
+	if (checkcode_len != hash_len) {
 		wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from server "
 			   "indicates that AKA/Identity message were not "
 			   "used, but they were");
 		return -1;
 	}
 
-	/* Checkcode is SHA1 hash over all EAP-AKA/Identity packets. */
+	/* Checkcode is SHA1/SHA256 hash over all EAP-AKA/Identity packets. */
 	addr = wpabuf_head(data->id_msgs);
 	len = wpabuf_len(data->id_msgs);
+	if (data->eap_method == EAP_TYPE_AKA_PRIME)
+		sha256_vector(1, &addr, &len, hash);
+	else
 		sha1_vector(1, &addr, &len, hash);
 
-	if (os_memcmp(hash, checkcode, EAP_AKA_CHECKCODE_LEN) != 0) {
+	if (os_memcmp(hash, checkcode, hash_len) != 0) {
 		wpa_printf(MSG_DEBUG, "EAP-AKA: Mismatch in AT_CHECKCODE");
 		return -1;
 	}
@@ -376,7 +408,7 @@ static struct wpabuf * eap_aka_client_error(struct eap_aka_data *data, u8 id,
 	data->num_id_req = 0;
 	data->num_notification = 0;
 
-	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_CLIENT_ERROR);
 	eap_sim_msg_add(msg, EAP_SIM_AT_CLIENT_ERROR_CODE, err, NULL, 0);
 	return eap_sim_msg_finish(msg, NULL, NULL, 0);
@@ -394,7 +426,7 @@ static struct wpabuf * eap_aka_authentication_reject(struct eap_aka_data *data,
 
 	wpa_printf(MSG_DEBUG, "Generating EAP-AKA Authentication-Reject "
 		   "(id=%d)", id);
-	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_AUTHENTICATION_REJECT);
 	return eap_sim_msg_finish(msg, NULL, NULL, 0);
 }
@@ -410,7 +442,7 @@ static struct wpabuf * eap_aka_synchronization_failure(
 
 	wpa_printf(MSG_DEBUG, "Generating EAP-AKA Synchronization-Failure "
 		   "(id=%d)", id);
-	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_SYNCHRONIZATION_FAILURE);
 	wpa_printf(MSG_DEBUG, "   AT_AUTS");
 	eap_sim_msg_add_full(msg, EAP_SIM_AT_AUTS, data->auts,
@@ -449,7 +481,7 @@ static struct wpabuf * eap_aka_response_identity(struct eap_sm *sm,
 		eap_aka_clear_identities(data, CLEAR_EAP_ID);
 
 	wpa_printf(MSG_DEBUG, "Generating EAP-AKA Identity (id=%d)", id);
-	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_IDENTITY);
 
 	if (identity) {
@@ -469,7 +501,7 @@ static struct wpabuf * eap_aka_response_challenge(struct eap_aka_data *data,
 	struct eap_sim_msg *msg;
 
 	wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d)", id);
-	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_CHALLENGE);
 	wpa_printf(MSG_DEBUG, "   AT_RES");
 	eap_sim_msg_add(msg, EAP_SIM_AT_RES, data->res_len * 8,
@@ -494,7 +526,7 @@ static struct wpabuf * eap_aka_response_reauth(struct eap_aka_data *data,
 
 	wpa_printf(MSG_DEBUG, "Generating EAP-AKA Reauthentication (id=%d)",
 		   id);
-	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_REAUTHENTICATION);
 	wpa_printf(MSG_DEBUG, "   AT_IV");
 	wpa_printf(MSG_DEBUG, "   AT_ENCR_DATA");
@@ -535,7 +567,7 @@ static struct wpabuf * eap_aka_response_notification(struct eap_aka_data *data,
 	u8 *k_aut = (notification & 0x4000) == 0 ? data->k_aut : NULL;
 
 	wpa_printf(MSG_DEBUG, "Generating EAP-AKA Notification (id=%d)", id);
-	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_NOTIFICATION);
 	if (k_aut && data->reauth) {
 		wpa_printf(MSG_DEBUG, "   AT_IV");
@@ -611,6 +643,101 @@ static struct wpabuf * eap_aka_process_identity(struct eap_sm *sm,
 }
 
 
+static int eap_aka_verify_mac(struct eap_aka_data *data,
+			      const struct wpabuf *req,
+			      const u8 *mac, const u8 *extra,
+			      size_t extra_len)
+{
+	if (data->eap_method == EAP_TYPE_AKA_PRIME)
+		return eap_sim_verify_mac_sha256(data->k_aut, req, mac, extra,
+						 extra_len);
+	return eap_sim_verify_mac(data->k_aut, req, mac, extra, extra_len);
+}
+
+
+#ifdef EAP_AKA_PRIME
+static struct wpabuf * eap_aka_prime_kdf_select(struct eap_aka_data *data,
+						u8 id, u16 kdf)
+{
+	struct eap_sim_msg *msg;
+
+	data->kdf = kdf;
+	wpa_printf(MSG_DEBUG, "Generating EAP-AKA Challenge (id=%d) (KDF "
+		   "select)", id);
+	msg = eap_sim_msg_init(EAP_CODE_RESPONSE, id, data->eap_method,
+			       EAP_AKA_SUBTYPE_CHALLENGE);
+	wpa_printf(MSG_DEBUG, "   AT_KDF");
+	eap_sim_msg_add(msg, EAP_SIM_AT_KDF, kdf, NULL, 0);
+	return eap_sim_msg_finish(msg, NULL, NULL, 0);
+}
+
+
+static struct wpabuf * eap_aka_prime_kdf_neg(struct eap_aka_data *data,
+					     u8 id, struct eap_sim_attrs *attr)
+{
+	size_t i;
+
+	for (i = 0; i < attr->kdf_count; i++) {
+		if (attr->kdf[i] == EAP_AKA_PRIME_KDF)
+			return eap_aka_prime_kdf_select(data, id,
+							EAP_AKA_PRIME_KDF);
+	}
+
+	/* No matching KDF found - fail authentication as if AUTN had been
+	 * incorrect */
+	return eap_aka_authentication_reject(data, id);
+}
+
+
+static int eap_aka_prime_kdf_valid(struct eap_aka_data *data,
+				   struct eap_sim_attrs *attr)
+{
+	size_t i, j;
+
+	if (attr->kdf_count == 0)
+		return 0;
+
+	/* The only allowed (and required) duplication of a KDF is the addition
+	 * of the selected KDF into the beginning of the list. */
+
+	if (data->kdf) {
+		if (attr->kdf[0] != data->kdf) {
+			wpa_printf(MSG_WARNING, "EAP-AKA': The server did not "
+				   "accept the selected KDF");
+			return 0;
+		}
+
+		for (i = 1; i < attr->kdf_count; i++) {
+			if (attr->kdf[i] == data->kdf)
+				break;
+		}
+		if (i == attr->kdf_count &&
+		    attr->kdf_count < EAP_AKA_PRIME_KDF_MAX) {
+			wpa_printf(MSG_WARNING, "EAP-AKA': The server did not "
+				   "duplicate the selected KDF");
+			return 0;
+		}
+
+		/* TODO: should check that the list is identical to the one
+		 * used in the previous Challenge message apart from the added
+		 * entry in the beginning. */
+	}
+
+	for (i = data->kdf ? 1 : 0; i < attr->kdf_count; i++) {
+		for (j = i + 1; j < attr->kdf_count; j++) {
+			if (attr->kdf[i] == attr->kdf[j]) {
+				wpa_printf(MSG_WARNING, "EAP-AKA': The server "
+					   "included a duplicated KDF");
+				return 0;
+			}
+		}
+	}
+
+	return 1;
+}
+#endif /* EAP_AKA_PRIME */
+
+
 static struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm,
 						 struct eap_aka_data *data,
 						 u8 id,
@@ -633,6 +760,52 @@ static struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm,
 					    EAP_AKA_UNABLE_TO_PROCESS_PACKET);
 	}
 
+#ifdef EAP_AKA_PRIME
+	if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+		if (!attr->kdf_input || attr->kdf_input_len == 0) {
+			wpa_printf(MSG_WARNING, "EAP-AKA': Challenge message "
+				   "did not include non-empty AT_KDF_INPUT");
+			/* Fail authentication as if AUTN had been incorrect */
+			return eap_aka_authentication_reject(data, id);
+		}
+		os_free(data->network_name);
+		data->network_name = os_malloc(attr->kdf_input_len);
+		if (data->network_name == NULL) {
+			wpa_printf(MSG_WARNING, "EAP-AKA': No memory for "
+				   "storing Network Name");
+			return eap_aka_authentication_reject(data, id);
+		}
+		os_memcpy(data->network_name, attr->kdf_input,
+			  attr->kdf_input_len);
+		data->network_name_len = attr->kdf_input_len;
+		wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA': Network Name "
+				  "(AT_KDF_INPUT)",
+				  data->network_name, data->network_name_len);
+		/* TODO: check Network Name per 3GPP.33.402 */
+
+		if (!eap_aka_prime_kdf_valid(data, attr))
+			return eap_aka_authentication_reject(data, id);
+
+		if (attr->kdf[0] != EAP_AKA_PRIME_KDF)
+			return eap_aka_prime_kdf_neg(data, id, attr);
+
+		data->kdf = EAP_AKA_PRIME_KDF;
+		wpa_printf(MSG_DEBUG, "EAP-AKA': KDF %d selected", data->kdf);
+	}
+
+	if (data->eap_method == EAP_TYPE_AKA && attr->bidding) {
+		u16 flags = WPA_GET_BE16(attr->bidding);
+		if ((flags & EAP_AKA_BIDDING_FLAG_D) &&
+		    eap_allowed_method(sm, EAP_VENDOR_IETF,
+				       EAP_TYPE_AKA_PRIME)) {
+			wpa_printf(MSG_WARNING, "EAP-AKA: Bidding down from "
+				   "AKA' to AKA detected");
+			/* Fail authentication as if AUTN had been incorrect */
+			return eap_aka_authentication_reject(data, id);
+		}
+	}
+#endif /* EAP_AKA_PRIME */
+
 	data->reauth = 0;
 	if (!attr->mac || !attr->rand || !attr->autn) {
 		wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message "
@@ -660,6 +833,16 @@ static struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm,
 		return eap_aka_client_error(data, id,
 					    EAP_AKA_UNABLE_TO_PROCESS_PACKET);
 	}
+#ifdef EAP_AKA_PRIME
+	if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+		/* Note: AUTN = (SQN ^ AK) || AMF || MAC which gives us the
+		 * needed 6-octet SQN ^AK for CK',IK' derivation */
+		eap_aka_prime_derive_ck_ik_prime(data->ck, data->ik,
+						 data->autn,
+						 data->network_name,
+						 data->network_name_len);
+	}
+#endif /* EAP_AKA_PRIME */
 	if (data->last_eap_identity) {
 		identity = data->last_eap_identity;
 		identity_len = data->last_eap_identity_len;
@@ -670,12 +853,17 @@ static struct wpabuf * eap_aka_process_challenge(struct eap_sm *sm,
 		identity = eap_get_config_identity(sm, &identity_len);
 	wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA: Selected identity for MK "
 			  "derivation", identity, identity_len);
+	if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+		eap_aka_prime_derive_keys(identity, identity_len, data->ik,
+					  data->ck, data->k_encr, data->k_aut,
+					  data->k_re, data->msk, data->emsk);
+	} else {
 		eap_aka_derive_mk(identity, identity_len, data->ik, data->ck,
 				  data->mk);
-	eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut, data->msk,
+		eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut,
-			    data->emsk);
+				    data->msk, data->emsk);
-	if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0))
+	}
-	{
+	if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) {
 		wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message "
 			   "used invalid AT_MAC");
 		return eap_aka_client_error(data, id,
@@ -763,8 +951,7 @@ static int eap_aka_process_notification_auth(struct eap_aka_data *data,
 		return -1;
 	}
 
-	if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0))
+	if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) {
-	{
 		wpa_printf(MSG_WARNING, "EAP-AKA: Notification message "
 			   "used invalid AT_MAC");
 		return -1;
@@ -842,8 +1029,7 @@ static struct wpabuf * eap_aka_process_reauthentication(
 	}
 
 	data->reauth = 1;
-	if (eap_sim_verify_mac(data->k_aut, reqData, attr->mac, (u8 *) "", 0))
+	if (eap_aka_verify_mac(data, reqData, attr->mac, (u8 *) "", 0)) {
-	{
 		wpa_printf(MSG_WARNING, "EAP-AKA: Reauthentication "
 			   "did not have valid AT_MAC");
 		return eap_aka_client_error(data, id,
@@ -882,10 +1068,6 @@ static struct wpabuf * eap_aka_process_reauthentication(
 			   "(%d <= %d)", eattr.counter, data->counter);
 		data->counter_too_small = eattr.counter;
 
-		eap_sim_derive_keys_reauth(eattr.counter, data->reauth_id,
-					   data->reauth_id_len, eattr.nonce_s,
-					   data->mk, NULL, NULL);
-
 		/* Reply using Re-auth w/ AT_COUNTER_TOO_SMALL. The current
 		 * reauth_id must not be used to start a new reauthentication.
 		 * However, since it was used in the last EAP-Response-Identity
@@ -908,10 +1090,18 @@ static struct wpabuf * eap_aka_process_reauthentication(
 	wpa_hexdump(MSG_DEBUG, "EAP-AKA: (encr) AT_NONCE_S",
 		    data->nonce_s, EAP_SIM_NONCE_S_LEN);
 
-	eap_sim_derive_keys_reauth(data->counter,
+	if (data->eap_method == EAP_TYPE_AKA_PRIME) {
-				   data->reauth_id, data->reauth_id_len,
+		eap_aka_prime_derive_keys_reauth(data->k_re, data->counter,
-				   data->nonce_s, data->mk, data->msk,
+						 data->reauth_id,
-				   data->emsk);
+						 data->reauth_id_len,
+						 data->nonce_s,
+						 data->msk, data->emsk);
+	} else {
+		eap_sim_derive_keys_reauth(data->counter, data->reauth_id,
+					   data->reauth_id_len,
+					   data->nonce_s, data->mk,
+					   data->msk, data->emsk);
+	}
 	eap_aka_clear_identities(data, CLEAR_REAUTH_ID | CLEAR_EAP_ID);
 	eap_aka_learn_ids(data, &eattr);
 
@@ -955,7 +1145,8 @@ static struct wpabuf * eap_aka_process(struct eap_sm *sm, void *priv,
 		return NULL;
 	}
 
-	pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_AKA, reqData, &len);
+	pos = eap_hdr_validate(EAP_VENDOR_IETF, data->eap_method, reqData,
+			       &len);
 	if (pos == NULL || len < 1) {
 		ret->ignore = TRUE;
 		return NULL;
@@ -973,7 +1164,8 @@ static struct wpabuf * eap_aka_process(struct eap_sm *sm, void *priv,
 	wpa_printf(MSG_DEBUG, "EAP-AKA: Subtype=%d", subtype);
 	pos += 2; /* Reserved */
 
-	if (eap_sim_parse_attr(pos, wpabuf_head_u8(reqData) + len, &attr, 1,
+	if (eap_sim_parse_attr(pos, wpabuf_head_u8(reqData) + len, &attr,
+			       data->eap_method == EAP_TYPE_AKA_PRIME ? 2 : 1,
 			       0)) {
 		res = eap_aka_client_error(data, id,
 					   EAP_AKA_UNABLE_TO_PROCESS_PACKET);
@@ -1152,3 +1344,35 @@ int eap_peer_aka_register(void)
 		eap_peer_method_free(eap);
 	return ret;
 }
+
+
+#ifdef EAP_AKA_PRIME
+int eap_peer_aka_prime_register(void)
+{
+	struct eap_method *eap;
+	int ret;
+
+	eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION,
+				    EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME,
+				    "AKA'");
+	if (eap == NULL)
+		return -1;
+
+	eap->init = eap_aka_prime_init;
+	eap->deinit = eap_aka_deinit;
+	eap->process = eap_aka_process;
+	eap->isKeyAvailable = eap_aka_isKeyAvailable;
+	eap->getKey = eap_aka_getKey;
+	eap->has_reauth_data = eap_aka_has_reauth_data;
+	eap->deinit_for_reauth = eap_aka_deinit_for_reauth;
+	eap->init_for_reauth = eap_aka_init_for_reauth;
+	eap->get_identity = eap_aka_get_identity;
+	eap->get_emsk = eap_aka_get_emsk;
+
+	ret = eap_peer_method_register(eap);
+	if (ret)
+		eap_peer_method_free(eap);
+
+	return ret;
+}
+#endif /* EAP_AKA_PRIME */

src/eap_server/eap_aka.c

@@ -1,5 +1,5 @@
 /*
- * hostapd / EAP-AKA (RFC 4187)
+ * hostapd / EAP-AKA (RFC 4187) and EAP-AKA' (draft-arkko-eap-aka-kdf)
  * Copyright (c) 2005-2008, Jouni Malinen <j@w1.fi>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -19,14 +19,16 @@
 #include "eap_common/eap_sim_common.h"
 #include "eap_server/eap_sim_db.h"
 #include "sha1.h"
+#include "sha256.h"
 #include "crypto.h"
 
 
 struct eap_aka_data {
 	u8 mk[EAP_SIM_MK_LEN];
 	u8 nonce_s[EAP_SIM_NONCE_S_LEN];
-	u8 k_aut[EAP_SIM_K_AUT_LEN];
+	u8 k_aut[EAP_AKA_PRIME_K_AUT_LEN];
 	u8 k_encr[EAP_SIM_K_ENCR_LEN];
+	u8 k_re[EAP_AKA_PRIME_K_RE_LEN]; /* EAP-AKA' only */
 	u8 msk[EAP_SIM_KEYING_DATA_LEN];
 	u8 emsk[EAP_EMSK_LEN];
 	u8 rand[EAP_AKA_RAND_LEN];
@@ -49,6 +51,10 @@ struct eap_aka_data {
 
 	struct wpabuf *id_msgs;
 	int pending_id;
+	u8 eap_method;
+	u8 *network_name;
+	size_t network_name_len;
+	u16 kdf;
 };
 
 
@@ -99,6 +105,9 @@ static void * eap_aka_init(struct eap_sm *sm)
 	data = os_zalloc(sizeof(*data));
 	if (data == NULL)
 		return NULL;
+
+	data->eap_method = EAP_TYPE_AKA;
+
 	data->state = IDENTITY;
 	eap_aka_determine_identity(sm, data, 1, 0);
 	data->pending_id = -1;
@@ -107,12 +116,48 @@ static void * eap_aka_init(struct eap_sm *sm)
 }
 
 
+#ifdef EAP_AKA_PRIME
+static void * eap_aka_prime_init(struct eap_sm *sm)
+{
+	struct eap_aka_data *data;
+	/* TODO: make ANID configurable; see 3GPP TS 24.302 */
+	char *network_name = "WLAN";
+
+	if (sm->eap_sim_db_priv == NULL) {
+		wpa_printf(MSG_WARNING, "EAP-AKA: eap_sim_db not configured");
+		return NULL;
+	}
+
+	data = os_zalloc(sizeof(*data));
+	if (data == NULL)
+		return NULL;
+
+	data->eap_method = EAP_TYPE_AKA_PRIME;
+	data->network_name = os_malloc(os_strlen(network_name));
+	if (data->network_name == NULL) {
+		os_free(data);
+		return NULL;
+	}
+
+	data->network_name_len = os_strlen(network_name);
+	os_memcpy(data->network_name, network_name, data->network_name_len);
+
+	data->state = IDENTITY;
+	eap_aka_determine_identity(sm, data, 1, 0);
+	data->pending_id = -1;
+
+	return data;
+}
+#endif /* EAP_AKA_PRIME */
+
+
 static void eap_aka_reset(struct eap_sm *sm, void *priv)
 {
 	struct eap_aka_data *data = priv;
 	os_free(data->next_pseudonym);
 	os_free(data->next_reauth_id);
 	wpabuf_free(data->id_msgs);
+	os_free(data->network_name);
 	os_free(data);
 }
 
@@ -141,7 +186,7 @@ static void eap_aka_add_checkcode(struct eap_aka_data *data,
 {
 	const u8 *addr;
 	size_t len;
-	u8 hash[SHA1_MAC_LEN];
+	u8 hash[SHA256_MAC_LEN];
 
 	wpa_printf(MSG_DEBUG, "   AT_CHECKCODE");
 
@@ -158,10 +203,14 @@ static void eap_aka_add_checkcode(struct eap_aka_data *data,
 	addr = wpabuf_head(data->id_msgs);
 	len = wpabuf_len(data->id_msgs);
 	wpa_hexdump(MSG_MSGDUMP, "EAP-AKA: AT_CHECKCODE data", addr, len);
+	if (data->eap_method == EAP_TYPE_AKA_PRIME)
+		sha256_vector(1, &addr, &len, hash);
+	else
 		sha1_vector(1, &addr, &len, hash);
 
 	eap_sim_msg_add(msg, EAP_SIM_AT_CHECKCODE, 0, hash,
-			EAP_AKA_CHECKCODE_LEN);
+			data->eap_method == EAP_TYPE_AKA_PRIME ?
+			EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN);
 }
 
 
@@ -170,7 +219,8 @@ static int eap_aka_verify_checkcode(struct eap_aka_data *data,
 {
 	const u8 *addr;
 	size_t len;
-	u8 hash[SHA1_MAC_LEN];
+	u8 hash[SHA256_MAC_LEN];
+	size_t hash_len;
 
 	if (checkcode == NULL)
 		return -1;
@@ -185,7 +235,10 @@ static int eap_aka_verify_checkcode(struct eap_aka_data *data,
 		return 0;
 	}
 
-	if (checkcode_len != EAP_AKA_CHECKCODE_LEN) {
+	hash_len = data->eap_method == EAP_TYPE_AKA_PRIME ?
+		EAP_AKA_PRIME_CHECKCODE_LEN : EAP_AKA_CHECKCODE_LEN;
+
+	if (checkcode_len != hash_len) {
 		wpa_printf(MSG_DEBUG, "EAP-AKA: Checkcode from peer indicates "
 			   "that AKA/Identity message were not used, but they "
 			   "were");
@@ -195,9 +248,12 @@ static int eap_aka_verify_checkcode(struct eap_aka_data *data,
 	/* Checkcode is SHA1 hash over all EAP-AKA/Identity packets. */
 	addr = wpabuf_head(data->id_msgs);
 	len = wpabuf_len(data->id_msgs);
+	if (data->eap_method == EAP_TYPE_AKA_PRIME)
+		sha256_vector(1, &addr, &len, hash);
+	else
 		sha1_vector(1, &addr, &len, hash);
 
-	if (os_memcmp(hash, checkcode, EAP_AKA_CHECKCODE_LEN) != 0) {
+	if (os_memcmp(hash, checkcode, hash_len) != 0) {
 		wpa_printf(MSG_DEBUG, "EAP-AKA: Mismatch in AT_CHECKCODE");
 		return -1;
 	}
@@ -213,7 +269,7 @@ static struct wpabuf * eap_aka_build_identity(struct eap_sm *sm,
 	struct wpabuf *buf;
 
 	wpa_printf(MSG_DEBUG, "EAP-AKA: Generating Identity");
-	msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_IDENTITY);
 	if (eap_sim_db_identity_known(sm->eap_sim_db_priv, sm->identity,
 				      sm->identity_len)) {
@@ -309,11 +365,23 @@ static struct wpabuf * eap_aka_build_challenge(struct eap_sm *sm,
 	struct eap_sim_msg *msg;
 
 	wpa_printf(MSG_DEBUG, "EAP-AKA: Generating Challenge");
-	msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_CHALLENGE);
 	wpa_printf(MSG_DEBUG, "   AT_RAND");
 	eap_sim_msg_add(msg, EAP_SIM_AT_RAND, 0, data->rand, EAP_AKA_RAND_LEN);
 	eap_sim_msg_add(msg, EAP_SIM_AT_AUTN, 0, data->autn, EAP_AKA_AUTN_LEN);
+	if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+		if (data->kdf) {
+			/* Add the selected KDF into the beginning */
+			eap_sim_msg_add(msg, EAP_SIM_AT_KDF, data->kdf,
+					NULL, 0);
+		}
+		eap_sim_msg_add(msg, EAP_SIM_AT_KDF, EAP_AKA_PRIME_KDF,
+				NULL, 0);
+		eap_sim_msg_add(msg, EAP_SIM_AT_KDF_INPUT,
+				data->network_name_len,
+				data->network_name, data->network_name_len);
+	}
 
 	if (eap_aka_build_encr(sm, data, msg, 0, NULL)) {
 		eap_sim_msg_free(msg);
@@ -327,6 +395,35 @@ static struct wpabuf * eap_aka_build_challenge(struct eap_sm *sm,
 		eap_sim_msg_add(msg, EAP_SIM_AT_RESULT_IND, 0, NULL, 0);
 	}
 
+#ifdef EAP_AKA_PRIME
+	if (data->eap_method == EAP_TYPE_AKA) {
+		u16 flags = 0;
+		int i;
+		int aka_prime_preferred = 0;
+
+		i = 0;
+		while (sm->user && i < EAP_MAX_METHODS &&
+		       (sm->user->methods[i].vendor != EAP_VENDOR_IETF ||
+			sm->user->methods[i].method != EAP_TYPE_NONE)) {
+			if (sm->user->methods[i].vendor == EAP_VENDOR_IETF) {
+				if (sm->user->methods[i].method ==
+				    EAP_TYPE_AKA)
+					break;
+				if (sm->user->methods[i].method ==
+				    EAP_TYPE_AKA_PRIME) {
+					aka_prime_preferred = 1;
+					break;
+				}
+			}
+			i++;
+		}
+
+		if (aka_prime_preferred)
+			flags |= EAP_AKA_BIDDING_FLAG_D;
+		eap_sim_msg_add(msg, EAP_SIM_AT_BIDDING, flags, NULL, 0);
+	}
+#endif /* EAP_AKA_PRIME */
+
 	wpa_printf(MSG_DEBUG, "   AT_MAC");
 	eap_sim_msg_add_mac(msg, EAP_SIM_AT_MAC);
 	return eap_sim_msg_finish(msg, data->k_aut, NULL, 0);
@@ -345,13 +442,21 @@ static struct wpabuf * eap_aka_build_reauth(struct eap_sm *sm,
 	wpa_hexdump_key(MSG_MSGDUMP, "EAP-AKA: NONCE_S",
 			data->nonce_s, EAP_SIM_NONCE_S_LEN);
 
-	eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut, data->msk,
+	if (data->eap_method == EAP_TYPE_AKA_PRIME) {
-			    data->emsk);
+		eap_aka_prime_derive_keys_reauth(data->k_re, data->counter,
-	eap_sim_derive_keys_reauth(data->counter, sm->identity,
+						 sm->identity,
-				   sm->identity_len, data->nonce_s, data->mk,
+						 sm->identity_len,
+						 data->nonce_s,
 						 data->msk, data->emsk);
+	} else {
+		eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut,
+				    data->msk, data->emsk);
+		eap_sim_derive_keys_reauth(data->counter, sm->identity,
+					   sm->identity_len, data->nonce_s,
+					   data->mk, data->msk, data->emsk);
+	}
 
-	msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_REAUTHENTICATION);
 
 	if (eap_aka_build_encr(sm, data, msg, data->counter, data->nonce_s)) {
@@ -379,7 +484,7 @@ static struct wpabuf * eap_aka_build_notification(struct eap_sm *sm,
 	struct eap_sim_msg *msg;
 
 	wpa_printf(MSG_DEBUG, "EAP-AKA: Generating Notification");
-	msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, EAP_TYPE_AKA,
+	msg = eap_sim_msg_init(EAP_CODE_REQUEST, id, data->eap_method,
 			       EAP_AKA_SUBTYPE_NOTIFICATION);
 	wpa_printf(MSG_DEBUG, "   AT_NOTIFICATION (%d)", data->notification);
 	eap_sim_msg_add(msg, EAP_SIM_AT_NOTIFICATION, data->notification,
@@ -437,10 +542,12 @@ static struct wpabuf * eap_aka_buildReq(struct eap_sm *sm, void *priv, u8 id)
 static Boolean eap_aka_check(struct eap_sm *sm, void *priv,
 			     struct wpabuf *respData)
 {
+	struct eap_aka_data *data = priv;
 	const u8 *pos;
 	size_t len;
 
-	pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_AKA, respData, &len);
+	pos = eap_hdr_validate(EAP_VENDOR_IETF, data->eap_method, respData,
+			       &len);
 	if (pos == NULL || len < 3) {
 		wpa_printf(MSG_INFO, "EAP-AKA: Invalid frame");
 		return TRUE;
@@ -523,17 +630,36 @@ static void eap_aka_determine_identity(struct eap_sm *sm,
 			data->reauth = eap_sim_db_get_reauth_entry(
 				sm->eap_sim_db_priv, sm->identity,
 				sm->identity_len);
+			if (data->reauth &&
+			    data->reauth->aka_prime !=
+			    (data->eap_method == EAP_TYPE_AKA_PRIME)) {
+				wpa_printf(MSG_DEBUG, "EAP-AKA: Reauth data "
+					   "was for different AKA version");
+				data->reauth = NULL;
+			}
 			if (data->reauth) {
 				wpa_printf(MSG_DEBUG, "EAP-AKA: Using fast "
 					   "re-authentication");
 				identity = data->reauth->identity;
 				identity_len = data->reauth->identity_len;
 				data->counter = data->reauth->counter;
+				if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+					os_memcpy(data->k_encr,
+						  data->reauth->k_encr,
+						  EAP_SIM_K_ENCR_LEN);
+					os_memcpy(data->k_aut,
+						  data->reauth->k_aut,
+						  EAP_AKA_PRIME_K_AUT_LEN);
+					os_memcpy(data->k_re,
+						  data->reauth->k_re,
+						  EAP_AKA_PRIME_K_RE_LEN);
+				} else {
 					os_memcpy(data->mk, data->reauth->mk,
 						  EAP_SIM_MK_LEN);
 				}
 			}
 		}
+	}
 
 	if (identity == NULL ||
 	    eap_sim_db_identity_known(sm->eap_sim_db_priv, sm->identity,
@@ -571,6 +697,17 @@ static void eap_aka_determine_identity(struct eap_sm *sm,
 		return;
 	}
 
+#ifdef EAP_AKA_PRIME
+	if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+		/* Note: AUTN = (SQN ^ AK) || AMF || MAC which gives us the
+		 * needed 6-octet SQN ^AK for CK',IK' derivation */
+		eap_aka_prime_derive_ck_ik_prime(data->ck, data->ik,
+						 data->autn,
+						 data->network_name,
+						 data->network_name_len);
+	}
+#endif /* EAP_AKA_PRIME */
+
 	data->reauth = NULL;
 	data->counter = 0; /* reset re-auth counter since this is full auth */
 
@@ -596,10 +733,16 @@ static void eap_aka_determine_identity(struct eap_sm *sm,
 	wpa_hexdump_ascii(MSG_DEBUG, "EAP-AKA: Identity for MK derivation",
 			  sm->identity, identity_len);
 
-	eap_aka_derive_mk(sm->identity, identity_len, data->ik, data->ck,
+	if (data->eap_method == EAP_TYPE_AKA_PRIME) {
-			  data->mk);
+		eap_aka_prime_derive_keys(identity, identity_len, data->ik,
-	eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut, data->msk,
+					  data->ck, data->k_encr, data->k_aut,
-			    data->emsk);
+					  data->k_re, data->msk, data->emsk);
+	} else {
+		eap_aka_derive_mk(sm->identity, identity_len, data->ik,
+				  data->ck, data->mk);
+		eap_sim_derive_keys(data->mk, data->k_encr, data->k_aut,
+				    data->msk, data->emsk);
+	}
 
 	eap_aka_state(data, CHALLENGE);
 }
@@ -638,6 +781,18 @@ static void eap_aka_process_identity(struct eap_sm *sm,
 }
 
 
+static int eap_aka_verify_mac(struct eap_aka_data *data,
+			      const struct wpabuf *req,
+			      const u8 *mac, const u8 *extra,
+			      size_t extra_len)
+{
+	if (data->eap_method == EAP_TYPE_AKA_PRIME)
+		return eap_sim_verify_mac_sha256(data->k_aut, req, mac, extra,
+						 extra_len);
+	return eap_sim_verify_mac(data->k_aut, req, mac, extra, extra_len);
+}
+
+
 static void eap_aka_process_challenge(struct eap_sm *sm,
 				      struct eap_aka_data *data,
 				      struct wpabuf *respData,
@@ -648,6 +803,31 @@ static void eap_aka_process_challenge(struct eap_sm *sm,
 
 	wpa_printf(MSG_DEBUG, "EAP-AKA: Processing Challenge");
 
+#ifdef EAP_AKA_PRIME
+#if 0
+	/* KDF negotiation; to be enabled only after more than one KDF is
+	 * supported */
+	if (data->eap_method == EAP_TYPE_AKA_PRIME &&
+	    attr->kdf_count == 1 && attr->mac == NULL) {
+		if (attr->kdf[0] != EAP_AKA_PRIME_KDF) {
+			wpa_printf(MSG_WARNING, "EAP-AKA': Peer selected "
+				   "unknown KDF");
+			data->notification =
+				EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
+			eap_aka_state(data, NOTIFICATION);
+			return;
+		}
+
+		data->kdf = attr->kdf[0];
+
+		/* Allow negotiation to continue with the selected KDF by
+		 * sending another Challenge message */
+		wpa_printf(MSG_DEBUG, "EAP-AKA': KDF %d selected", data->kdf);
+		return;
+	}
+#endif
+#endif /* EAP_AKA_PRIME */
+
 	if (attr->checkcode &&
 	    eap_aka_verify_checkcode(data, attr->checkcode,
 				     attr->checkcode_len)) {
@@ -658,7 +838,7 @@ static void eap_aka_process_challenge(struct eap_sm *sm,
 		return;
 	}
 	if (attr->mac == NULL ||
-	    eap_sim_verify_mac(data->k_aut, respData, attr->mac, NULL, 0)) {
+	    eap_aka_verify_mac(data, respData, attr->mac, NULL, 0)) {
 		wpa_printf(MSG_WARNING, "EAP-AKA: Challenge message "
 			   "did not include valid AT_MAC");
 		data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
@@ -707,10 +887,21 @@ static void eap_aka_process_challenge(struct eap_sm *sm,
 		data->next_pseudonym = NULL;
 	}
 	if (data->next_reauth_id) {
+		if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+			eap_sim_db_add_reauth_prime(sm->eap_sim_db_priv,
+						    identity,
+						    identity_len,
+						    data->next_reauth_id,
+						    data->counter + 1,
+						    data->k_encr, data->k_aut,
+						    data->k_re);
+		} else {
 			eap_sim_db_add_reauth(sm->eap_sim_db_priv, identity,
 					      identity_len,
-				      data->next_reauth_id, data->counter + 1,
+					      data->next_reauth_id,
+					      data->counter + 1,
 					      data->mk);
+		}
 		data->next_reauth_id = NULL;
 	}
 }
@@ -763,7 +954,7 @@ static void eap_aka_process_reauth(struct eap_sm *sm,
 	wpa_printf(MSG_DEBUG, "EAP-AKA: Processing Reauthentication");
 
 	if (attr->mac == NULL ||
-	    eap_sim_verify_mac(data->k_aut, respData, attr->mac, data->nonce_s,
+	    eap_aka_verify_mac(data, respData, attr->mac, data->nonce_s,
 			       EAP_SIM_NONCE_S_LEN)) {
 		wpa_printf(MSG_WARNING, "EAP-AKA: Re-authentication message "
 			   "did not include valid AT_MAC");
@@ -833,9 +1024,21 @@ static void eap_aka_process_reauth(struct eap_sm *sm,
 		data->next_pseudonym = NULL;
 	}
 	if (data->next_reauth_id) {
+		if (data->eap_method == EAP_TYPE_AKA_PRIME) {
+			eap_sim_db_add_reauth_prime(sm->eap_sim_db_priv,
+						    identity,
+						    identity_len,
+						    data->next_reauth_id,
+						    data->counter + 1,
+						    data->k_encr, data->k_aut,
+						    data->k_re);
+		} else {
 			eap_sim_db_add_reauth(sm->eap_sim_db_priv, identity,
-				      identity_len, data->next_reauth_id,
+					      identity_len,
-				      data->counter + 1, data->mk);
+					      data->next_reauth_id,
+					      data->counter + 1,
+					      data->mk);
+		}
 		data->next_reauth_id = NULL;
 	} else {
 		eap_sim_db_remove_reauth(sm->eap_sim_db_priv, data->reauth);
@@ -898,7 +1101,8 @@ static void eap_aka_process(struct eap_sm *sm, void *priv,
 	size_t len;
 	struct eap_sim_attrs attr;
 
-	pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_AKA, respData, &len);
+	pos = eap_hdr_validate(EAP_VENDOR_IETF, data->eap_method, respData,
+			       &len);
 	if (pos == NULL || len < 3)
 		return;
 
@@ -914,7 +1118,9 @@ static void eap_aka_process(struct eap_sm *sm, void *priv,
 		return;
 	}
 
-	if (eap_sim_parse_attr(pos, end, &attr, 1, 0)) {
+	if (eap_sim_parse_attr(pos, end, &attr,
+			       data->eap_method == EAP_TYPE_AKA_PRIME ? 2 : 1,
+			       0)) {
 		wpa_printf(MSG_DEBUG, "EAP-AKA: Failed to parse attributes");
 		data->notification = EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH;
 		eap_aka_state(data, NOTIFICATION);
@@ -1031,3 +1237,34 @@ int eap_server_aka_register(void)
 		eap_server_method_free(eap);
 	return ret;
 }
+
+
+#ifdef EAP_AKA_PRIME
+int eap_server_aka_prime_register(void)
+{
+	struct eap_method *eap;
+	int ret;
+
+	eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
+				      EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME,
+				      "AKA'");
+	if (eap == NULL)
+		return -1;
+
+	eap->init = eap_aka_prime_init;
+	eap->reset = eap_aka_reset;
+	eap->buildReq = eap_aka_buildReq;
+	eap->check = eap_aka_check;
+	eap->process = eap_aka_process;
+	eap->isDone = eap_aka_isDone;
+	eap->getKey = eap_aka_getKey;
+	eap->isSuccess = eap_aka_isSuccess;
+	eap->get_emsk = eap_aka_get_emsk;
+
+	ret = eap_server_method_register(eap);
+	if (ret)
+		eap_server_method_free(eap);
+
+	return ret;
+}
+#endif /* EAP_AKA_PRIME */

wpa_supplicant/ChangeLog

@@ -10,6 +10,8 @@ ChangeLog for wpa_supplicant
 	  wpa_supplicant.conf (see WPS section in the example configuration
 	  file); new wpa_cli commands wps_pin, wps_pbc, and wps_reg are used to
 	  manage WPS negotiation; see README-WPS for more details
+	* added support for EAP-AKA' (draft-arkko-eap-aka-kdf)
+
 2008-11-23 - v0.6.6
 	* added Milenage SIM/USIM emulator for EAP-SIM/EAP-AKA
 	  (can be used to simulate test SIM/USIM card with a known private key;

wpa_supplicant/Makefile

@@ -431,14 +431,9 @@ ifdef CONFIG_EAP_AKA_PRIME
 # EAP-AKA'
 ifeq ($(CONFIG_EAP_AKA_PRIME), dyn)
 CFLAGS += -DEAP_AKA_PRIME_DYNAMIC
-EAPDYN += ../src/eap_peer/eap_aka_prime.so
 else
 CFLAGS += -DEAP_AKA_PRIME
-OBJS += ../src/eap_peer/eap_aka_prime.o
-OBJS_h += ../src/eap_server/eap_aka_prime.o
 endif
-CONFIG_IEEE8021X_EAPOL=y
-CONFIG_EAP_SIM_COMMON=y
 endif
 
 ifdef CONFIG_EAP_SIM_COMMON

wpa_supplicant/defconfig

@@ -156,6 +156,10 @@ CONFIG_EAP_LEAP=y
 # EAP-AKA (enable CONFIG_PCSC, if EAP-AKA is used)
 #CONFIG_EAP_AKA=y
 
+# EAP-AKA' (enable CONFIG_PCSC, if EAP-AKA' is used).
+# This requires CONFIG_EAP_AKA to be enabled, too.
+#CONFIG_EAP_AKA_PRIME=y
+
 # Enable USIM simulator (Milenage) for EAP-AKA
 #CONFIG_USIM_SIMULATOR=y
 

wpa_supplicant/eap_testing.txt

@@ -94,6 +94,7 @@ EAP-TTLS/EAP-GPSK	-   -   -   -   -   -   -   -   -   -   +   -
 EAP-TTLS + TNC		-   -   -   -   -   +   -   -   -   -   +   -
 EAP-SIM			+   -   -   ?   -   +   -   ?   -   -   +   -
 EAP-AKA			-   -   -   -   -   +   -   -   -   -   +   -
+EAP-AKA'		-   -   -   -   -   -   -   -   -   -   +   -
 EAP-PSK			+7  -   -   -   -   +   -   -   -   -   +   -
 EAP-PAX			-   -   -   -   -   +   -   -   -   -   +   -
 EAP-SAKE		-   -   -   -   -   -   -   -   -   -   +   -

www/hostapd/index.html

@@ -53,6 +53,7 @@ RADIUS backend authentication server) ("WPA-Enterprise")</li>
 <li>EAP-TTLS/CHAP</li>
 <li>EAP-SIM</li>
 <li>EAP-AKA</li>
+<li>EAP-AKA'</li>
 <li>EAP-PAX</li>
 <li>EAP-PSK</li>
 <li>EAP-SAKE</li>
@@ -266,7 +267,7 @@ Internet Systems Consortium (ISC).
     <address><a href="mailto:j@w1.fi">Jouni Malinen</a></address>
 <!-- Created: Sun Jan  2 17:20:17 PST 2005 -->
 <!-- hhmts start -->
-Last modified: Fri Nov 28 18:27:51 EET 2008
+Last modified: Sun Dec  7 19:24:25 EET 2008
 <!-- hhmts end -->
     </div>
   </body>

www/wpa_supplicant/index.html

@@ -63,6 +63,7 @@ build for x86 target).</p>
 <li>EAP-TTLS/CHAP</li>
 <li>EAP-SIM</li>
 <li>EAP-AKA</li>
+<li>EAP-AKA'</li>
 <li>EAP-PSK</li>
 <li>EAP-FAST</li>
 <li>EAP-PAX</li>
@@ -356,7 +357,7 @@ Internet Systems Consortium (ISC).
     <address><a href="mailto:j@w1.fi">Jouni Malinen</a></address>
 <!-- Created: Sat May 22 21:41:58 PDT 2004 -->
 <!-- hhmts start -->
-Last modified: Fri Nov 28 18:27:42 EET 2008
+Last modified: Sun Dec  7 19:24:16 EET 2008
 <!-- hhmts end -->
     </div>
   </body>