LXR linux/net/mptcp/crypto

   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(nonce1, &msg[0]);
  49                put_unaligned_be32(nonce2, &msg[4]);
  50
  51                mptcp_crypto_hmac_sha(key1, key2, msg, 8, hmac);
  52                for (j = 0; j < 32; ++j)
  53                        sprintf(&hmac_hex[j << 1], "%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