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Diffstat (limited to 'contrib/wpa_supplicant/eap_sim_common.c')
-rw-r--r--contrib/wpa_supplicant/eap_sim_common.c788
1 files changed, 0 insertions, 788 deletions
diff --git a/contrib/wpa_supplicant/eap_sim_common.c b/contrib/wpa_supplicant/eap_sim_common.c
deleted file mode 100644
index 98f4fb7d3014..000000000000
--- a/contrib/wpa_supplicant/eap_sim_common.c
+++ /dev/null
@@ -1,788 +0,0 @@
-/*
- * WPA Supplicant / EAP-SIM/AKA shared routines
- * Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "common.h"
-#include "eap_i.h"
-#include "sha1.h"
-#include "aes_wrap.h"
-#include "eap_sim_common.h"
-
-
-#define MSK_LEN 8
-#define EMSK_LEN 8
-
-
-static void eap_sim_prf(const u8 *key, u8 *x, size_t xlen)
-{
- u8 xkey[64];
- u32 t[5], _t[5];
- int i, j, m, k;
- u8 *xpos = x;
- u32 carry;
-
- /* FIPS 186-2 + change notice 1 */
-
- memcpy(xkey, key, EAP_SIM_MK_LEN);
- memset(xkey + EAP_SIM_MK_LEN, 0, 64 - EAP_SIM_MK_LEN);
- t[0] = 0x67452301;
- t[1] = 0xEFCDAB89;
- t[2] = 0x98BADCFE;
- t[3] = 0x10325476;
- t[4] = 0xC3D2E1F0;
-
- m = xlen / 40;
- for (j = 0; j < m; j++) {
- /* XSEED_j = 0 */
- for (i = 0; i < 2; i++) {
- /* XVAL = (XKEY + XSEED_j) mod 2^b */
-
- /* w_i = G(t, XVAL) */
- memcpy(_t, t, 20);
- sha1_transform((u8 *) _t, xkey);
- _t[0] = host_to_be32(_t[0]);
- _t[1] = host_to_be32(_t[1]);
- _t[2] = host_to_be32(_t[2]);
- _t[3] = host_to_be32(_t[3]);
- _t[4] = host_to_be32(_t[4]);
- memcpy(xpos, _t, 20);
-
- /* XKEY = (1 + XKEY + w_i) mod 2^b */
- carry = 1;
- for (k = 19; k >= 0; k--) {
- carry += xkey[k] + xpos[k];
- xkey[k] = carry & 0xff;
- carry >>= 8;
- }
-
- xpos += SHA1_MAC_LEN;
- }
- /* x_j = w_0|w_1 */
- }
-}
-
-
-void eap_sim_derive_keys(const u8 *mk, u8 *k_encr, u8 *k_aut, u8 *msk)
-{
- u8 buf[120], *pos;
- eap_sim_prf(mk, buf, 120);
- pos = buf;
- memcpy(k_encr, pos, EAP_SIM_K_ENCR_LEN);
- pos += EAP_SIM_K_ENCR_LEN;
- memcpy(k_aut, pos, EAP_SIM_K_AUT_LEN);
- pos += EAP_SIM_K_AUT_LEN;
- memcpy(msk, pos, EAP_SIM_KEYING_DATA_LEN);
- pos += MSK_LEN;
-
- wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: K_encr",
- k_encr, EAP_SIM_K_ENCR_LEN);
- wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: K_aut",
- k_aut, EAP_SIM_K_ENCR_LEN);
- wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: MSK",
- msk, MSK_LEN);
- wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: Ext. MSK",
- msk + MSK_LEN, EMSK_LEN);
- wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: keying material",
- msk, EAP_SIM_KEYING_DATA_LEN);
-}
-
-
-void eap_sim_derive_keys_reauth(unsigned int _counter,
- const u8 *identity, size_t identity_len,
- const u8 *nonce_s, const u8 *mk, u8 *msk)
-{
- u8 xkey[SHA1_MAC_LEN];
- u8 counter[2];
- const u8 *addr[4];
- size_t len[4];
-
- addr[0] = identity;
- len[0] = identity_len;
- addr[1] = counter;
- len[1] = 2;
- addr[2] = nonce_s;
- len[2] = EAP_SIM_NONCE_S_LEN;
- addr[3] = mk;
- len[3] = EAP_SIM_MK_LEN;
-
- counter[0] = _counter >> 8;
- counter[1] = _counter & 0xff;
-
- wpa_printf(MSG_DEBUG, "EAP-SIM: Deriving keying data from reauth");
- wpa_hexdump_ascii(MSG_DEBUG, "EAP-SIM: Identity",
- identity, identity_len);
- wpa_hexdump(MSG_DEBUG, "EAP-SIM: counter", counter, 2);
- wpa_hexdump(MSG_DEBUG, "EAP-SIM: NONCE_S", nonce_s,
- EAP_SIM_NONCE_S_LEN);
- wpa_hexdump_key(MSG_DEBUG, "EAP-SIM: MK", mk, EAP_SIM_MK_LEN);
-
- /* XKEY' = SHA1(Identity|counter|NONCE_S|MK) */
- sha1_vector(4, addr, len, xkey);
- wpa_hexdump(MSG_DEBUG, "EAP-SIM: XKEY'", xkey, SHA1_MAC_LEN);
-
- eap_sim_prf(xkey, msk, EAP_SIM_KEYING_DATA_LEN);
- wpa_hexdump(MSG_DEBUG, "EAP-SIM: MSK", msk, MSK_LEN);
- wpa_hexdump(MSG_DEBUG, "EAP-SIM: Ext. MSK", msk + MSK_LEN, EMSK_LEN);
- wpa_hexdump(MSG_DEBUG, "EAP-SIM: keying material",
- msk, EAP_SIM_KEYING_DATA_LEN);
-}
-
-
-int eap_sim_verify_mac(const u8 *k_aut, u8 *req, size_t req_len, u8 *mac,
- u8 *extra, size_t extra_len)
-{
- unsigned char hmac[SHA1_MAC_LEN];
- const u8 *addr[2];
- size_t len[2];
- u8 rx_mac[EAP_SIM_MAC_LEN];
-
- if (mac == NULL)
- return -1;
-
- addr[0] = req;
- len[0] = req_len;
- addr[1] = extra;
- len[1] = extra_len;
-
- /* HMAC-SHA1-128 */
- memcpy(rx_mac, mac, EAP_SIM_MAC_LEN);
- memset(mac, 0, EAP_SIM_MAC_LEN);
- hmac_sha1_vector(k_aut, EAP_SIM_K_AUT_LEN, 2, addr, len, hmac);
- memcpy(mac, rx_mac, EAP_SIM_MAC_LEN);
-
- return (memcmp(hmac, mac, EAP_SIM_MAC_LEN) == 0) ? 0 : 1;
-}
-
-
-void eap_sim_add_mac(const u8 *k_aut, u8 *msg, size_t msg_len, u8 *mac,
- const u8 *extra, size_t extra_len)
-{
- unsigned char hmac[SHA1_MAC_LEN];
- const u8 *addr[2];
- size_t len[2];
-
- addr[0] = msg;
- len[0] = msg_len;
- addr[1] = extra;
- len[1] = extra_len;
-
- /* HMAC-SHA1-128 */
- memset(mac, 0, EAP_SIM_MAC_LEN);
- hmac_sha1_vector(k_aut, EAP_SIM_K_AUT_LEN, 2, addr, len, hmac);
- memcpy(mac, hmac, EAP_SIM_MAC_LEN);
-}
-
-
-int eap_sim_parse_attr(u8 *start, u8 *end, struct eap_sim_attrs *attr, int aka,
- int encr)
-{
- u8 *pos = start, *apos;
- size_t alen, plen;
- int list_len, i;
-
- memset(attr, 0, sizeof(*attr));
- attr->id_req = NO_ID_REQ;
- attr->notification = -1;
- attr->counter = -1;
- attr->selected_version = -1;
- attr->client_error_code = -1;
-
- while (pos < end) {
- if (pos + 2 > end) {
- wpa_printf(MSG_INFO, "EAP-SIM: Attribute overflow(1)");
- return -1;
- }
- wpa_printf(MSG_MSGDUMP, "EAP-SIM: Attribute: Type=%d Len=%d",
- pos[0], pos[1] * 4);
- if (pos + pos[1] * 4 > end) {
- wpa_printf(MSG_INFO, "EAP-SIM: Attribute overflow "
- "(pos=%p len=%d end=%p)",
- pos, pos[1] * 4, end);
- return -1;
- }
- apos = pos + 2;
- alen = pos[1] * 4 - 2;
- wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Attribute data",
- apos, alen);
-
- switch (pos[0]) {
- case EAP_SIM_AT_RAND:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_RAND");
- apos += 2;
- alen -= 2;
- if ((!aka && (alen % GSM_RAND_LEN)) ||
- (aka && alen != AKA_RAND_LEN)) {
- wpa_printf(MSG_INFO, "EAP-SIM: Invalid AT_RAND"
- " (len %lu)",
- (unsigned long) alen);
- return -1;
- }
- attr->rand = apos;
- attr->num_chal = alen / GSM_RAND_LEN;
- break;
- case EAP_SIM_AT_AUTN:
- wpa_printf(MSG_DEBUG, "EAP-AKA: AT_AUTN");
- if (!aka) {
- wpa_printf(MSG_DEBUG, "EAP-SIM: "
- "Unexpected AT_AUTN");
- return -1;
- }
- apos += 2;
- alen -= 2;
- if (alen != AKA_AUTN_LEN) {
- wpa_printf(MSG_INFO, "EAP-AKA: Invalid AT_AUTN"
- " (len %lu)",
- (unsigned long) alen);
- return -1;
- }
- attr->autn = apos;
- break;
- case EAP_SIM_AT_PADDING:
- if (!encr) {
- wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
- "AT_PADDING");
- return -1;
- }
- wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) AT_PADDING");
- for (i = 2; i < alen; i++) {
- if (apos[i] != 0) {
- wpa_printf(MSG_INFO, "EAP-SIM: (encr) "
- "AT_PADDING used a non-zero"
- " padding byte");
- wpa_hexdump(MSG_DEBUG, "EAP-SIM: "
- "(encr) padding bytes",
- apos + 2, alen - 2);
- return -1;
- }
- }
- break;
- case EAP_SIM_AT_NONCE_MT:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_NONCE_MT");
- if (alen != 2 + EAP_SIM_NONCE_MT_LEN) {
- wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
- "AT_NONCE_MT length");
- return -1;
- }
- attr->nonce_mt = apos + 2;
- break;
- case EAP_SIM_AT_PERMANENT_ID_REQ:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_PERMANENT_ID_REQ");
- attr->id_req = PERMANENT_ID;
- break;
- case EAP_SIM_AT_MAC:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_MAC");
- if (alen != 2 + EAP_SIM_MAC_LEN) {
- wpa_printf(MSG_INFO, "EAP-SIM: Invalid AT_MAC "
- "length");
- return -1;
- }
- attr->mac = apos + 2;
- break;
- case EAP_SIM_AT_NOTIFICATION:
- if (alen != 2) {
- wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
- "AT_NOTIFICATION length %lu",
- (unsigned long) alen);
- return -1;
- }
- attr->notification = apos[0] * 256 + apos[1];
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_NOTIFICATION %d",
- attr->notification);
- break;
- case EAP_SIM_AT_ANY_ID_REQ:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_ANY_ID_REQ");
- attr->id_req = ANY_ID;
- break;
- case EAP_SIM_AT_IDENTITY:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_IDENTITY");
- attr->identity = apos + 2;
- attr->identity_len = alen - 2;
- break;
- case EAP_SIM_AT_VERSION_LIST:
- if (aka) {
- wpa_printf(MSG_DEBUG, "EAP-AKA: "
- "Unexpected AT_VERSION_LIST");
- return -1;
- }
- list_len = apos[0] * 256 + apos[1];
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_VERSION_LIST");
- if (list_len < 2 || list_len > alen - 2) {
- wpa_printf(MSG_WARNING, "EAP-SIM: Invalid "
- "AT_VERSION_LIST (list_len=%d "
- "attr_len=%lu)", list_len,
- (unsigned long) alen);
- return -1;
- }
- attr->version_list = apos + 2;
- attr->version_list_len = list_len;
- break;
- case EAP_SIM_AT_SELECTED_VERSION:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_SELECTED_VERSION");
- if (alen != 2) {
- wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
- "AT_SELECTED_VERSION length %lu",
- (unsigned long) alen);
- return -1;
- }
- attr->selected_version = apos[0] * 256 + apos[1];
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_SELECTED_VERSION "
- "%d", attr->selected_version);
- break;
- case EAP_SIM_AT_FULLAUTH_ID_REQ:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_FULLAUTH_ID_REQ");
- attr->id_req = FULLAUTH_ID;
- break;
- case EAP_SIM_AT_COUNTER:
- if (!encr) {
- wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
- "AT_COUNTER");
- return -1;
- }
- if (alen != 2) {
- wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid "
- "AT_COUNTER (alen=%lu)",
- (unsigned long) alen);
- return -1;
- }
- attr->counter = apos[0] * 256 + apos[1];
- wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) AT_COUNTER %d",
- attr->counter);
- break;
- case EAP_SIM_AT_NONCE_S:
- if (!encr) {
- wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
- "AT_NONCE_S");
- return -1;
- }
- wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) "
- "AT_NONCE_S");
- if (alen != 2 + EAP_SIM_NONCE_S_LEN) {
- wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid "
- "AT_NONCE_S (alen=%lu)",
- (unsigned long) alen);
- return -1;
- }
- attr->nonce_s = apos + 2;
- break;
- case EAP_SIM_AT_CLIENT_ERROR_CODE:
- if (alen != 2) {
- wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
- "AT_CLIENT_ERROR_CODE length %lu",
- (unsigned long) alen);
- return -1;
- }
- attr->client_error_code = apos[0] * 256 + apos[1];
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_CLIENT_ERROR_CODE "
- "%d", attr->client_error_code);
- break;
- case EAP_SIM_AT_IV:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_IV");
- if (alen != 2 + EAP_SIM_MAC_LEN) {
- wpa_printf(MSG_INFO, "EAP-SIM: Invalid AT_IV "
- "length %lu", (unsigned long) alen);
- return -1;
- }
- attr->iv = apos + 2;
- break;
- case EAP_SIM_AT_ENCR_DATA:
- wpa_printf(MSG_DEBUG, "EAP-SIM: AT_ENCR_DATA");
- attr->encr_data = apos + 2;
- attr->encr_data_len = alen - 2;
- if (attr->encr_data_len % 16) {
- wpa_printf(MSG_INFO, "EAP-SIM: Invalid "
- "AT_ENCR_DATA length %lu",
- (unsigned long)
- attr->encr_data_len);
- return -1;
- }
- break;
- case EAP_SIM_AT_NEXT_PSEUDONYM:
- if (!encr) {
- wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
- "AT_NEXT_PSEUDONYM");
- return -1;
- }
- wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) "
- "AT_NEXT_PSEUDONYM");
- plen = apos[0] * 256 + apos[1];
- if (plen > alen - 2) {
- wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid"
- " AT_NEXT_PSEUDONYM (actual"
- " len %lu, attr len %lu)",
- (unsigned long) plen,
- (unsigned long) alen);
- return -1;
- }
- attr->next_pseudonym = pos + 4;
- attr->next_pseudonym_len = plen;
- break;
- case EAP_SIM_AT_NEXT_REAUTH_ID:
- if (!encr) {
- wpa_printf(MSG_ERROR, "EAP-SIM: Unencrypted "
- "AT_NEXT_REAUTH_ID");
- return -1;
- }
- wpa_printf(MSG_DEBUG, "EAP-SIM: (encr) "
- "AT_NEXT_REAUTH_ID");
- plen = apos[0] * 256 + apos[1];
- if (plen > alen - 2) {
- wpa_printf(MSG_INFO, "EAP-SIM: (encr) Invalid"
- " AT_NEXT_REAUTH_ID (actual"
- " len %lu, attr len %lu)",
- (unsigned long) plen,
- (unsigned long) alen);
- return -1;
- }
- attr->next_reauth_id = pos + 4;
- attr->next_reauth_id_len = plen;
- break;
- default:
- if (pos[0] < 128) {
- wpa_printf(MSG_INFO, "EAP-SIM: Unrecognized "
- "non-skippable attribute %d",
- pos[0]);
- return -1;
- }
-
- wpa_printf(MSG_DEBUG, "EAP-SIM: Unrecognized skippable"
- " attribute %d ignored", pos[0]);
- break;
- }
-
- pos += pos[1] * 4;
- }
-
- wpa_printf(MSG_DEBUG, "EAP-SIM: Attributes parsed successfully "
- "(aka=%d encr=%d)", aka, encr);
-
- return 0;
-}
-
-
-int eap_sim_parse_encr(const u8 *k_encr, u8 *encr_data, size_t encr_data_len,
- const u8 *iv, struct eap_sim_attrs *attr, int aka)
-{
- if (!iv) {
- wpa_printf(MSG_INFO, "EAP-SIM: Encrypted data, but no IV");
- return -1;
- }
- aes_128_cbc_decrypt(k_encr, iv, encr_data, encr_data_len);
- wpa_hexdump(MSG_MSGDUMP, "EAP-SIM: Decrypted AT_ENCR_DATA",
- encr_data, encr_data_len);
-
- if (eap_sim_parse_attr(encr_data, encr_data + encr_data_len, attr,
- aka, 1)) {
- wpa_printf(MSG_INFO, "EAP-SIM: (encr) Failed to parse "
- "decrypted AT_ENCR_DATA");
- return -1;
- }
-
- return 0;
-}
-
-
-#define EAP_SIM_INIT_LEN 128
-
-struct eap_sim_msg {
- u8 *buf;
- size_t buf_len, used;
- size_t mac, iv, encr; /* index from buf */
-};
-
-
-struct eap_sim_msg * eap_sim_msg_init(int code, int id, int type, int subtype)
-{
- struct eap_sim_msg *msg;
- struct eap_hdr *eap;
- u8 *pos;
-
- msg = malloc(sizeof(*msg));
- if (msg == NULL)
- return NULL;
- memset(msg, 0, sizeof(*msg));
-
- msg->buf = malloc(EAP_SIM_INIT_LEN);
- if (msg->buf == NULL) {
- free(msg);
- return NULL;
- }
- memset(msg->buf, 0, EAP_SIM_INIT_LEN);
- msg->buf_len = EAP_SIM_INIT_LEN;
- eap = (struct eap_hdr *) msg->buf;
- eap->code = code;
- eap->identifier = id;
- msg->used = sizeof(*eap);
-
- pos = (u8 *) (eap + 1);
- *pos++ = type;
- *pos++ = subtype;
- *pos++ = 0; /* Reserved */
- *pos++ = 0; /* Reserved */
- msg->used += 4;
-
- return msg;
-}
-
-
-u8 * eap_sim_msg_finish(struct eap_sim_msg *msg, size_t *len, const u8 *k_aut,
- const u8 *extra, size_t extra_len)
-{
- struct eap_hdr *eap;
- u8 *buf;
-
- if (msg == NULL)
- return NULL;
-
- eap = (struct eap_hdr *) msg->buf;
- eap->length = host_to_be16(msg->used);
-
- if (k_aut && msg->mac) {
- eap_sim_add_mac(k_aut, msg->buf, msg->used,
- msg->buf + msg->mac, extra, extra_len);
- }
-
- *len = msg->used;
- buf = msg->buf;
- free(msg);
- return buf;
-}
-
-
-void eap_sim_msg_free(struct eap_sim_msg *msg)
-{
- if (msg) {
- free(msg->buf);
- free(msg);
- }
-}
-
-
-static int eap_sim_msg_resize(struct eap_sim_msg *msg, size_t add_len)
-{
- if (msg->used + add_len > msg->buf_len) {
- u8 *nbuf = realloc(msg->buf, msg->used + add_len);
- if (nbuf == NULL)
- return -1;
- msg->buf = nbuf;
- msg->buf_len = msg->used + add_len;
- }
- return 0;
-}
-
-
-u8 * eap_sim_msg_add_full(struct eap_sim_msg *msg, u8 attr,
- const u8 *data, size_t len)
-{
- int attr_len = 2 + len;
- int pad_len;
- u8 *start, *pos;
-
- if (msg == NULL)
- return NULL;
-
- pad_len = (4 - attr_len % 4) % 4;
- attr_len += pad_len;
- if (eap_sim_msg_resize(msg, attr_len))
- return NULL;
- start = pos = msg->buf + msg->used;
- *pos++ = attr;
- *pos++ = attr_len / 4;
- memcpy(pos, data, len);
- if (pad_len) {
- pos += len;
- memset(pos, 0, pad_len);
- }
- msg->used += attr_len;
- return start;
-}
-
-
-u8 * eap_sim_msg_add(struct eap_sim_msg *msg, u8 attr, u16 value,
- const u8 *data, size_t len)
-{
- int attr_len = 4 + len;
- int pad_len;
- u8 *start, *pos;
-
- if (msg == NULL)
- return NULL;
-
- pad_len = (4 - attr_len % 4) % 4;
- attr_len += pad_len;
- if (eap_sim_msg_resize(msg, attr_len))
- return NULL;
- start = pos = msg->buf + msg->used;
- *pos++ = attr;
- *pos++ = attr_len / 4;
- *pos++ = value >> 8;
- *pos++ = value & 0xff;
- if (data)
- memcpy(pos, data, len);
- if (pad_len) {
- pos += len;
- memset(pos, 0, pad_len);
- }
- msg->used += attr_len;
- return start;
-}
-
-
-u8 * eap_sim_msg_add_mac(struct eap_sim_msg *msg, u8 attr)
-{
- u8 *pos = eap_sim_msg_add(msg, attr, 0, NULL, EAP_SIM_MAC_LEN);
- if (pos)
- msg->mac = (pos - msg->buf) + 4;
- return pos;
-}
-
-
-int eap_sim_msg_add_encr_start(struct eap_sim_msg *msg, u8 attr_iv,
- u8 attr_encr)
-{
- u8 *pos = eap_sim_msg_add(msg, attr_iv, 0, NULL, EAP_SIM_IV_LEN);
- if (pos == NULL)
- return -1;
- msg->iv = (pos - msg->buf) + 4;
- if (hostapd_get_rand(msg->buf + msg->iv, EAP_SIM_IV_LEN)) {
- msg->iv = 0;
- return -1;
- }
-
- pos = eap_sim_msg_add(msg, attr_encr, 0, NULL, 0);
- if (pos == NULL) {
- msg->iv = 0;
- return -1;
- }
- msg->encr = pos - msg->buf;
-
- return 0;
-}
-
-
-int eap_sim_msg_add_encr_end(struct eap_sim_msg *msg, u8 *k_encr, int attr_pad)
-{
- size_t encr_len;
-
- if (k_encr == NULL || msg->iv == 0 || msg->encr == 0)
- return -1;
-
- encr_len = msg->used - msg->encr - 4;
- if (encr_len % 16) {
- u8 *pos;
- int pad_len = 16 - (encr_len % 16);
- if (pad_len < 4) {
- wpa_printf(MSG_WARNING, "EAP-SIM: "
- "eap_sim_msg_add_encr_end - invalid pad_len"
- " %d", pad_len);
- return -1;
- }
- wpa_printf(MSG_DEBUG, " *AT_PADDING");
- pos = eap_sim_msg_add(msg, attr_pad, 0, NULL, pad_len - 4);
- if (pos == NULL)
- return -1;
- memset(pos + 4, 0, pad_len - 4);
- encr_len += pad_len;
- }
- wpa_printf(MSG_DEBUG, " (AT_ENCR_DATA data len %lu)",
- (unsigned long) encr_len);
- msg->buf[msg->encr + 1] = encr_len / 4 + 1;
- aes_128_cbc_encrypt(k_encr, msg->buf + msg->iv,
- msg->buf + msg->encr + 4, encr_len);
-
- return 0;
-}
-
-
-void eap_sim_report_notification(void *msg_ctx, int notification, int aka)
-{
- const char *type = aka ? "AKA" : "SIM";
-
- switch (notification) {
- case EAP_SIM_GENERAL_FAILURE_AFTER_AUTH:
- wpa_printf(MSG_WARNING, "EAP-%s: General failure "
- "notification (after authentication)", type);
- break;
- case EAP_SIM_TEMPORARILY_DENIED:
- wpa_printf(MSG_WARNING, "EAP-%s: Failure notification: "
- "User has been temporarily denied access to the "
- "requested service", type);
- break;
- case EAP_SIM_NOT_SUBSCRIBED:
- wpa_printf(MSG_WARNING, "EAP-%s: Failure notification: "
- "User has not subscribed to the requested service",
- type);
- break;
- case EAP_SIM_GENERAL_FAILURE_BEFORE_AUTH:
- wpa_printf(MSG_WARNING, "EAP-%s: General failure "
- "notification (before authentication)", type);
- break;
- case EAP_SIM_SUCCESS:
- wpa_printf(MSG_INFO, "EAP-%s: Successful authentication "
- "notification", type);
- break;
- default:
- if (notification >= 32768) {
- wpa_printf(MSG_INFO, "EAP-%s: Unrecognized "
- "non-failure notification %d",
- type, notification);
- } else {
- wpa_printf(MSG_WARNING, "EAP-%s: Unrecognized "
- "failure notification %d",
- type, notification);
- }
- }
-}
-
-
-#ifdef TEST_MAIN_EAP_SIM_COMMON
-static int test_eap_sim_prf(void)
-{
- /* http://csrc.nist.gov/encryption/dss/Examples-1024bit.pdf */
- u8 xkey[] = {
- 0xbd, 0x02, 0x9b, 0xbe, 0x7f, 0x51, 0x96, 0x0b,
- 0xcf, 0x9e, 0xdb, 0x2b, 0x61, 0xf0, 0x6f, 0x0f,
- 0xeb, 0x5a, 0x38, 0xb6
- };
- u8 w[] = {
- 0x20, 0x70, 0xb3, 0x22, 0x3d, 0xba, 0x37, 0x2f,
- 0xde, 0x1c, 0x0f, 0xfc, 0x7b, 0x2e, 0x3b, 0x49,
- 0x8b, 0x26, 0x06, 0x14, 0x3c, 0x6c, 0x18, 0xba,
- 0xcb, 0x0f, 0x6c, 0x55, 0xba, 0xbb, 0x13, 0x78,
- 0x8e, 0x20, 0xd7, 0x37, 0xa3, 0x27, 0x51, 0x16
- };
- u8 buf[40];
-
- printf("Testing EAP-SIM PRF (FIPS 186-2 + change notice 1)\n");
- eap_sim_prf(xkey, buf, sizeof(buf));
- if (memcmp(w, buf, sizeof(w) != 0)) {
- printf("eap_sim_prf failed\n");
- return 1;
- }
-
- return 0;
-}
-
-
-int main(int argc, char *argv[])
-{
- int errors = 0;
-
- errors += test_eap_sim_prf();
-
- return errors;
-}
-#endif /* TEST_MAIN_EAP_SIM_COMMON */
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