1// SPDX-License-Identifier: GPL-2.0
2#include <kunit/test.h>
3
4#include "protocol.h"
5
6struct test_case {
7 char *key;
8 char *msg;
9 char *result;
10};
11
12/* we can't reuse RFC 4231 test vectors, as we have constraint on the
13 * input and key size.
14 */
15static struct test_case tests[] = {
16 {
17 .key = "0b0b0b0b0b0b0b0b",
18 .msg = "48692054",
19 .result = "8385e24fb4235ac37556b6b886db106284a1da671699f46db1f235ec622dcafa",
20 },
21 {
22 .key = "aaaaaaaaaaaaaaaa",
23 .msg = "dddddddd",
24 .result = "2c5e219164ff1dca1c4a92318d847bb6b9d44492984e1eb71aff9022f71046e9",
25 },
26 {
27 .key = "0102030405060708",
28 .msg = "cdcdcdcd",
29 .result = "e73b9ba9969969cefb04aa0d6df18ec2fcc075b6f23b4d8c4da736a5dbbc6e7d",
30 },
31};
32
33static void mptcp_crypto_test_basic(struct kunit *test)
34{
35 char hmac[32], hmac_hex[65];
36 u32 nonce1, nonce2;
37 u64 key1, key2;
38 u8 msg[8];
39 int i, j;
40
41 for (i = 0; i < ARRAY_SIZE(tests); ++i) {
42 /* mptcp hmap will convert to be before computing the hmac */
43 key1 = be64_to_cpu(*((__be64 *)&tests[i].key[0]));
44 key2 = be64_to_cpu(*((__be64 *)&tests[i].key[8]));
45 nonce1 = be32_to_cpu(*((__be32 *)&tests[i].msg[0]));
46 nonce2 = be32_to_cpu(*((__be32 *)&tests[i].msg[4]));
47
48 put_unaligned_be32(val: nonce1, p: &msg[0]);
49 put_unaligned_be32(val: nonce2, p: &msg[4]);
50
51 mptcp_crypto_hmac_sha(key1, key2, msg, len: 8, hmac);
52 for (j = 0; j < 32; ++j)
53 sprintf(buf: &hmac_hex[j << 1], fmt: "%02x", hmac[j] & 0xff);
54 hmac_hex[64] = 0;
55
56 KUNIT_EXPECT_STREQ(test, &hmac_hex[0], tests[i].result);
57 }
58}
59
60static struct kunit_case mptcp_crypto_test_cases[] = {
61 KUNIT_CASE(mptcp_crypto_test_basic),
62 {}
63};
64
65static struct kunit_suite mptcp_crypto_suite = {
66 .name = "mptcp-crypto",
67 .test_cases = mptcp_crypto_test_cases,
68};
69
70kunit_test_suite(mptcp_crypto_suite);
71
72MODULE_LICENSE("GPL");
73

source code of linux/net/mptcp/crypto_test.c