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336 lines
10 KiB
C
336 lines
10 KiB
C
/*-
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* Copyright (c) 2004 Sam Leffler, Errno Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* WEP test module.
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*
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* Test vectors come from section I.7.2 of P802.11i/D7.0, October 2003.
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*
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* To use this tester load the net80211 layer (either as a module or
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* by statically configuring it into your kernel), then insmod this
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* module. It should automatically run all test cases and print
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* information for each. To run one or more tests you can specify a
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* tests parameter to the module that is a bit mask of the set of tests
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* you want; e.g. insmod wep_test tests=7 will run only test mpdu's
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* 1, 2, and 3.
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/module.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net80211/ieee80211_var.h>
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/*
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MPDU data
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aa aa 03 00 00 00 08 00 45 00 00 4e 66 1a 00 00 80 11 be 64 0a 00 01 22
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0a ff ff ff 00 89 00 89 00 3a 00 00 80 a6 01 10 00 01 00 00 00 00 00 00
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20 45 43 45 4a 45 48 45 43 46 43 45 50 46 45 45 49 45 46 46 43 43 41 43
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41 43 41 43 41 43 41 41 41 00 00 20 00 01
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RC4 encryption is performed as follows:
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17
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18 Key fb 02 9e 30 31 32 33 34
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Plaintext
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aa aa 03 00 00 00 08 00 45 00 00 4e 66 1a 00 00 80 11 be 64 0a 00 01
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22 0a ff ff ff 00 89 00 89 00 3a 00 00 80 a6 01 10 00 01 00 00 00 00
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00 00 20 45 43 45 4a 45 48 45 43 46 43 45 50 46 45 45 49 45 46 46 43
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43 41 43 41 43 41 43 41 43 41 41 41 00 00 20 00 01 1b d0 b6 04
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Ciphertext
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f6 9c 58 06 bd 6c e8 46 26 bc be fb 94 74 65 0a ad 1f 79 09 b0 f6 4d
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5f 58 a5 03 a2 58 b7 ed 22 eb 0e a6 49 30 d3 a0 56 a5 57 42 fc ce 14
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1d 48 5f 8a a8 36 de a1 8d f4 2c 53 80 80 5a d0 c6 1a 5d 6f 58 f4 10
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40 b2 4b 7d 1a 69 38 56 ed 0d 43 98 e7 ae e3 bf 0e 2a 2c a8 f7
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The plaintext consists of the MPDU data, followed by a 4-octet CRC-32
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calculated over the MPDU data.
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19 The expanded MPDU, after WEP encapsulation, is as follows:
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20
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21 IV fb 02 9e 80
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MPDU data
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f6 9c 58 06 bd 6c e8 46 26 bc be fb 94 74 65 0a ad 1f 79 09 b0 f6 4d 5f 58 a5
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03 a2 58 b7 ed 22 eb 0e a6 49 30 d3 a0 56 a5 57 42 fc ce 14 1d 48 5f 8a a8 36
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de a1 8d f4 2c 53 80 80 5a d0 c6 1a 5d 6f 58 f4 10 40 b2 4b 7d 1a 69 38 56 ed
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0d 43 98 e7 ae e3 bf 0e
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ICV 2a 2c a8 f7
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*/
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static const u_int8_t test1_key[] = { /* TK (w/o IV) */
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0x30, 0x31, 0x32, 0x33, 0x34,
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};
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static const u_int8_t test1_plaintext[] = { /* Plaintext MPDU */
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0x08, 0x48, 0xc3, 0x2c, 0x0f, 0xd2, 0xe1, 0x28, /* 802.11 Header */
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0xa5, 0x7c, 0x50, 0x30, 0xf1, 0x84, 0x44, 0x08,
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0xab, 0xae, 0xa5, 0xb8, 0xfc, 0xba, 0x80, 0x33,
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0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00, 0x08, 0x00, /* Plaintext data */
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0x45, 0x00, 0x00, 0x4e, 0x66, 0x1a, 0x00, 0x00,
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0x80, 0x11, 0xbe, 0x64, 0x0a, 0x00, 0x01, 0x22,
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0x0a, 0xff, 0xff, 0xff, 0x00, 0x89, 0x00, 0x89,
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0x00, 0x3a, 0x00, 0x00, 0x80, 0xa6, 0x01, 0x10,
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0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x20, 0x45, 0x43, 0x45, 0x4a, 0x45, 0x48, 0x45,
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0x43, 0x46, 0x43, 0x45, 0x50, 0x46, 0x45, 0x45,
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0x49, 0x45, 0x46, 0x46, 0x43, 0x43, 0x41, 0x43,
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0x41, 0x43, 0x41, 0x43, 0x41, 0x43, 0x41, 0x41,
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0x41, 0x00, 0x00, 0x20, 0x00, 0x01,
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};
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static const u_int8_t test1_encrypted[] = { /* Encrypted MPDU */
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0x08, 0x48, 0xc3, 0x2c, 0x0f, 0xd2, 0xe1, 0x28,
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0xa5, 0x7c, 0x50, 0x30, 0xf1, 0x84, 0x44, 0x08,
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0xab, 0xae, 0xa5, 0xb8, 0xfc, 0xba, 0x80, 0x33,
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0xfb, 0x02, 0x9e, 0x80, 0xf6, 0x9c, 0x58, 0x06,
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0xbd, 0x6c, 0xe8, 0x46, 0x26, 0xbc, 0xbe, 0xfb,
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0x94, 0x74, 0x65, 0x0a, 0xad, 0x1f, 0x79, 0x09,
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0xb0, 0xf6, 0x4d, 0x5f, 0x58, 0xa5, 0x03, 0xa2,
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0x58, 0xb7, 0xed, 0x22, 0xeb, 0x0e, 0xa6, 0x49,
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0x30, 0xd3, 0xa0, 0x56, 0xa5, 0x57, 0x42, 0xfc,
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0xce, 0x14, 0x1d, 0x48, 0x5f, 0x8a, 0xa8, 0x36,
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0xde, 0xa1, 0x8d, 0xf4, 0x2c, 0x53, 0x80, 0x80,
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0x5a, 0xd0, 0xc6, 0x1a, 0x5d, 0x6f, 0x58, 0xf4,
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0x10, 0x40, 0xb2, 0x4b, 0x7d, 0x1a, 0x69, 0x38,
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0x56, 0xed, 0x0d, 0x43, 0x98, 0xe7, 0xae, 0xe3,
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0xbf, 0x0e, 0x2a, 0x2c, 0xa8, 0xf7,
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};
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/* XXX fix byte order of iv */
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#define TEST(n,name,cipher,keyix,iv0,iv1,iv2,iv3) { \
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name, IEEE80211_CIPHER_##cipher,keyix, { iv2,iv1,iv0,iv3 }, \
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test##n##_key, sizeof(test##n##_key), \
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test##n##_plaintext, sizeof(test##n##_plaintext), \
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test##n##_encrypted, sizeof(test##n##_encrypted) \
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}
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struct ciphertest {
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const char *name;
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int cipher;
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int keyix;
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u_int8_t iv[4];
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const u_int8_t *key;
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size_t key_len;
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const u_int8_t *plaintext;
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size_t plaintext_len;
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const u_int8_t *encrypted;
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size_t encrypted_len;
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} weptests[] = {
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TEST(1, "WEP test mpdu 1", WEP, 2, 0xfb, 0x02, 0x9e, 0x80),
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};
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static void
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dumpdata(const char *tag, const void *p, size_t len)
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{
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int i;
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printf("%s: 0x%p len %u", tag, p, len);
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for (i = 0; i < len; i++) {
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if ((i % 16) == 0)
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printf("\n%03d:", i);
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printf(" %02x", ((const u_int8_t *)p)[i]);
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}
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printf("\n");
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}
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static void
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cmpfail(const void *gen, size_t genlen, const void *ref, size_t reflen)
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{
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int i;
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for (i = 0; i < genlen; i++)
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if (((const u_int8_t *)gen)[i] != ((const u_int8_t *)ref)[i]) {
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printf("first difference at byte %u\n", i);
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break;
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}
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dumpdata("Generated", gen, genlen);
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dumpdata("Reference", ref, reflen);
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}
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struct wep_ctx_hw { /* for use with h/w support */
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struct ieee80211com *wc_ic; /* for diagnostics */
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u_int32_t wc_iv; /* initial vector for crypto */
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};
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static int
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runtest(struct ieee80211com *ic, struct ciphertest *t)
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{
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struct ieee80211_key key;
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struct mbuf *m = NULL;
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const struct ieee80211_cipher *cip;
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u_int8_t mac[IEEE80211_ADDR_LEN];
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struct wep_ctx_hw *ctx;
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printf("%s: ", t->name);
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/*
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* Setup key.
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*/
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memset(&key, 0, sizeof(key));
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key.wk_flags = IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV;
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key.wk_cipher = &ieee80211_cipher_none;
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if (!ieee80211_crypto_newkey(ic, t->cipher,
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IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV, &key)) {
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printf("FAIL: ieee80211_crypto_newkey failed\n");
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goto bad;
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}
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memcpy(key.wk_key, t->key, t->key_len);
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key.wk_keylen = t->key_len;
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if (!ieee80211_crypto_setkey(ic, &key, mac)) {
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printf("FAIL: ieee80211_crypto_setkey failed\n");
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goto bad;
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}
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cip = key.wk_cipher;
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/*
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* Craft frame from plaintext data.
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*/
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cip = key.wk_cipher;
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m = m_getcl(M_NOWAIT, MT_HEADER, M_PKTHDR);
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memcpy(mtod(m, void *), t->encrypted, t->encrypted_len);
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m->m_len = t->encrypted_len;
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m->m_pkthdr.len = m->m_len;
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/*
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* Decrypt frame.
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*/
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if (!cip->ic_decap(&key, m)) {
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printf("FAIL: wep decap failed\n");
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cmpfail(mtod(m, const void *), m->m_pkthdr.len,
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t->plaintext, t->plaintext_len);
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goto bad;
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}
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/*
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* Verify: frame length, frame contents.
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*/
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if (m->m_pkthdr.len != t->plaintext_len) {
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printf("FAIL: decap botch; length mismatch\n");
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cmpfail(mtod(m, const void *), m->m_pkthdr.len,
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t->plaintext, t->plaintext_len);
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goto bad;
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} else if (memcmp(mtod(m, const void *), t->plaintext, t->plaintext_len)) {
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printf("FAIL: decap botch; data does not compare\n");
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cmpfail(mtod(m, const void *), m->m_pkthdr.len,
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t->plaintext, sizeof(t->plaintext));
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goto bad;
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}
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/*
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* Encrypt frame.
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*/
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ctx = (struct wep_ctx_hw *) key.wk_private;
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memcpy(&ctx->wc_iv, t->iv, sizeof(t->iv)); /* for encap/encrypt */
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if (!cip->ic_encap(&key, m, t->keyix<<6)) {
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printf("FAIL: wep encap failed\n");
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goto bad;
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}
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/*
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* Verify: frame length, frame contents.
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*/
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if (m->m_pkthdr.len != t->encrypted_len) {
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printf("FAIL: encap data length mismatch\n");
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cmpfail(mtod(m, const void *), m->m_pkthdr.len,
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t->encrypted, t->encrypted_len);
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goto bad;
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} else if (memcmp(mtod(m, const void *), t->encrypted, m->m_pkthdr.len)) {
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printf("FAIL: encrypt data does not compare\n");
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cmpfail(mtod(m, const void *), m->m_pkthdr.len,
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t->encrypted, t->encrypted_len);
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dumpdata("Plaintext", t->plaintext, t->plaintext_len);
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goto bad;
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}
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m_freem(m);
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ieee80211_crypto_delkey(ic, &key);
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printf("PASS\n");
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return 1;
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bad:
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if (m != NULL)
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m_freem(m);
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ieee80211_crypto_delkey(ic, &key);
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return 0;
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}
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/*
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* Module glue.
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*/
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static int tests = -1;
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static int debug = 0;
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static int
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init_crypto_wep_test(void)
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{
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#define N(a) (sizeof(a)/sizeof(a[0]))
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struct ieee80211com ic;
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int i, pass, total;
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memset(&ic, 0, sizeof(ic));
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if (debug)
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ic.ic_debug = IEEE80211_MSG_CRYPTO;
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ieee80211_crypto_attach(&ic);
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pass = 0;
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total = 0;
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for (i = 0; i < N(weptests); i++)
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if (tests & (1<<i)) {
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total++;
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pass += runtest(&ic, &weptests[i]);
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}
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printf("%u of %u 802.11i WEP test vectors passed\n", pass, total);
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ieee80211_crypto_detach(&ic);
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return (pass == total ? 0 : -1);
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#undef N
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}
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static int
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test_wep_modevent(module_t mod, int type, void *unused)
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{
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switch (type) {
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case MOD_LOAD:
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(void) init_crypto_wep_test();
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return 0;
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case MOD_UNLOAD:
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return 0;
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}
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return EINVAL;
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}
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static moduledata_t test_wep_mod = {
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"test_wep",
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test_wep_modevent,
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0
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};
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DECLARE_MODULE(test_wep, test_wep_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
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MODULE_VERSION(test_wep, 1);
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MODULE_DEPEND(test_wep, wlan, 1, 1, 1);
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