1 /* From RFC5869 Appendix A
3 * https://tools.ietf.org/html/rfc5869
5 #include <ccan/crypto/hkdf_sha256/hkdf_sha256.h>
6 #include <ccan/tap/tap.h>
7 #include <ccan/str/hex/hex.h>
12 const char *ikm, *salt, *info, *okm;
15 static struct test tests[] = { {
17 Basic test case with SHA-256
19 "0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", /* (22 octets) */
20 "000102030405060708090a0b0c", /* (13 octets) */
21 "f0f1f2f3f4f5f6f7f8f9", /* (10 octets) */
22 "3cb25f25faacd57a90434f64d0362f2a2d2d0a90cf1a5a4c5db02d56ecc4c5bf34007208d5b887185865", /* (42 octets) */
27 * Test with SHA-256 and longer inputs/outputs */
28 "000102030405060708090a0b0c0d0e0f"
29 "101112131415161718191a1b1c1d1e1f"
30 "202122232425262728292a2b2c2d2e2f"
31 "303132333435363738393a3b3c3d3e3f"
32 "404142434445464748494a4b4c4d4e4f", /* (80 octets) */
33 "606162636465666768696a6b6c6d6e6f"
34 "707172737475767778797a7b7c7d7e7f"
35 "808182838485868788898a8b8c8d8e8f"
36 "909192939495969798999a9b9c9d9e9f"
37 "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf", /* (80 octets )*/
38 "b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
39 "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
40 "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
41 "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
42 "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff", /* (80 octets) */
43 "b11e398dc80327a1c8e7f78c596a4934"
44 "4f012eda2d4efad8a050cc4c19afa97c"
45 "59045a99cac7827271cb41c65e590e09"
46 "da3275600c2f09b8367793a9aca3db71"
47 "cc30c58179ec3e87c14c01d5c1f3434f"
48 "1d87" /* (82 octets) */
53 * Test with SHA-256 and zero-length salt/info
55 "0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", /* (22 octets) */
58 "8da4e775a563c18f715f802a063c5a31"
59 "b8a11f5c5ee1879ec3454e5f3c738d2d"
60 "9d201395faa4b61a96c8" /* (42 octets) */
64 static void *fromhex(const char *str, size_t *len)
68 *len = hex_data_size(strlen(str));
70 if (!hex_decode(str, strlen(str), p, *len))
79 plan_tests(sizeof(tests) / sizeof(tests[0]));
81 for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
82 size_t ksize, ssize, isize, okmsize;
83 void *k, *s, *info, *expect, *okm;
85 k = fromhex(tests[i].ikm, &ksize);
86 s = fromhex(tests[i].salt, &ssize);
87 info = fromhex(tests[i].info, &isize);
88 expect = fromhex(tests[i].okm, &okmsize);
89 okm = malloc(okmsize);
90 hkdf_sha256(okm, okmsize, s, ssize, k, ksize, info, isize);
91 ok1(memcmp(okm, expect, okmsize) == 0);
100 return exit_status();