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/*
* CDDL HEADER START
*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2017, Datto, Inc. All rights reserved.
*/
#include <stdio.h>
#include <strings.h>
#include <sys/crypto/icp.h>
#include <sys/sha2.h>
#include <sys/hkdf.h>
#define NELEMS(x) (sizeof (x) / sizeof ((x)[0]))
/*
* Byte arrays are given as char pointers so that they
* can be specified as strings.
*/
typedef struct hkdf_tv {
/* test vector input values */
char *ikm;
uint_t ikm_len;
char *salt;
uint_t salt_len;
char *info;
uint_t info_len;
uint_t okm_len;
/* expected output */
char *okm;
} hkdf_tv_t;
/*
* XXX Neither NIST nor IETF has published official test
* vectors for testing HKDF with SHA512. The following
* vectors should be updated if these are ever published.
* The current vectors were taken from:
* https://www.kullo.net/blog/hkdf-sha-512-test-vectors/
*/
static hkdf_tv_t test_vectors[] = {
{
.ikm = "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
"\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
"\x0b\x0b\x0b\x0b\x0b\x0b",
.ikm_len = 22,
.salt = "\x00\x01\x02\x03\x04\x05\x06\x07"
"\x08\x09\x0a\x0b\x0c",
.salt_len = 13,
.info = "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7"
"\xf8\xf9",
.info_len = 10,
.okm_len = 42,
.okm = "\x83\x23\x90\x08\x6c\xda\x71\xfb"
"\x47\x62\x5b\xb5\xce\xb1\x68\xe4"
"\xc8\xe2\x6a\x1a\x16\xed\x34\xd9"
"\xfc\x7f\xe9\x2c\x14\x81\x57\x93"
"\x38\xda\x36\x2c\xb8\xd9\xf9\x25"
"\xd7\xcb",
},
{
.ikm = "\x00\x01\x02\x03\x04\x05\x06\x07"
"\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
"\x10\x11\x12\x13\x14\x15\x16\x17"
"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"
"\x20\x21\x22\x23\x24\x25\x26\x27"
"\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f"
"\x30\x31\x32\x33\x34\x35\x36\x37"
"\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f"
"\x40\x41\x42\x43\x44\x45\x46\x47"
"\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f",
.ikm_len = 80,
.salt = "\x60\x61\x62\x63\x64\x65\x66\x67"
"\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f"
"\x70\x71\x72\x73\x74\x75\x76\x77"
"\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f"
"\x80\x81\x82\x83\x84\x85\x86\x87"
"\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f"
"\x90\x91\x92\x93\x94\x95\x96\x97"
"\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f"
"\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7"
"\xa8\xa9\xaa\xab\xac\xad\xae\xaf",
.salt_len = 80,
.info = "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7"
"\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf"
"\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7"
"\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf"
"\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7"
"\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf"
"\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7"
"\xe8\xe9\xea\xeb\xec\xed\xee\xef"
"\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7"
"\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff",
.info_len = 80,
.okm_len = 42,
.okm = "\xce\x6c\x97\x19\x28\x05\xb3\x46"
"\xe6\x16\x1e\x82\x1e\xd1\x65\x67"
"\x3b\x84\xf4\x00\xa2\xb5\x14\xb2"
"\xfe\x23\xd8\x4c\xd1\x89\xdd\xf1"
"\xb6\x95\xb4\x8c\xbd\x1c\x83\x88"
"\x44\x11\x37\xb3\xce\x28\xf1\x6a"
"\xa6\x4b\xa3\x3b\xa4\x66\xb2\x4d"
"\xf6\xcf\xcb\x02\x1e\xcf\xf2\x35"
"\xf6\xa2\x05\x6c\xe3\xaf\x1d\xe4"
"\x4d\x57\x20\x97\xa8\x50\x5d\x9e"
"\x7a\x93",
},
{
.ikm = "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
"\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
"\x0b\x0b\x0b\x0b\x0b\x0b",
.ikm_len = 22,
.salt = NULL,
.salt_len = 0,
.info = NULL,
.info_len = 0,
.okm_len = 42,
.okm = "\xf5\xfa\x02\xb1\x82\x98\xa7\x2a"
"\x8c\x23\x89\x8a\x87\x03\x47\x2c"
"\x6e\xb1\x79\xdc\x20\x4c\x03\x42"
"\x5c\x97\x0e\x3b\x16\x4b\xf9\x0f"
"\xff\x22\xd0\x48\x36\xd0\xe2\x34"
"\x3b\xac",
},
{
.ikm = "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
"\x0b\x0b\x0b",
.ikm_len = 11,
.salt = "\x00\x01\x02\x03\x04\x05\x06\x07"
"\x08\x09\x0a\x0b\x0c",
.salt_len = 13,
.info = "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7"
"\xf8\xf9",
.info_len = 10,
.okm_len = 42,
.okm = "\x74\x13\xe8\x99\x7e\x02\x06\x10"
"\xfb\xf6\x82\x3f\x2c\xe1\x4b\xff"
"\x01\x87\x5d\xb1\xca\x55\xf6\x8c"
"\xfc\xf3\x95\x4d\xc8\xaf\xf5\x35"
"\x59\xbd\x5e\x30\x28\xb0\x80\xf7"
"\xc0\x68",
},
{
.ikm = "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
"\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
"\x0c\x0c\x0c\x0c\x0c\x0c",
.ikm_len = 22,
.salt = NULL,
.salt_len = 0,
.info = NULL,
.info_len = 0,
.okm_len = 42,
.okm = "\x14\x07\xd4\x60\x13\xd9\x8b\xc6"
"\xde\xce\xfc\xfe\xe5\x5f\x0f\x90"
"\xb0\xc7\xf6\x3d\x68\xeb\x1a\x80"
"\xea\xf0\x7e\x95\x3c\xfc\x0a\x3a"
"\x52\x40\xa1\x55\xd6\xe4\xda\xa9"
"\x65\xbb",
},
};
static void
hexdump(char *str, uint8_t *src, uint_t len)
{
int i;
printf("\t%s\t", str);
for (i = 0; i < len; i++) {
printf("%02x", src[i] & 0xff);
}
printf("\n");
}
static int
run_test(int i, hkdf_tv_t *tv)
{
int ret;
uint8_t okey[SHA512_DIGEST_LENGTH];
printf("TEST %d:\t", i);
ret = hkdf_sha512((uint8_t *)tv->ikm, tv->ikm_len, (uint8_t *)tv->salt,
tv->salt_len, (uint8_t *)tv->info, tv->info_len, okey, tv->okm_len);
if (ret != 0) {
printf("HKDF failed with error code %d\n", ret);
return (ret);
}
if (bcmp(okey, tv->okm, tv->okm_len) != 0) {
printf("Output Mismatch\n");
hexdump("Expected:", (uint8_t *)tv->okm, tv->okm_len);
hexdump("Actual: ", okey, tv->okm_len);
return (1);
}
printf("Passed\n");
return (0);
}
int
main(int argc, char **argv)
{
int ret, i;
icp_init();
for (i = 0; i < NELEMS(test_vectors); i++) {
ret = run_test(i, &test_vectors[i]);
if (ret != 0)
break;
}
icp_fini();
if (ret == 0) {
printf("All tests passed successfully.\n");
return (0);
} else {
printf("Test failed.\n");
return (1);
}
}
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