/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include "tpm2-util.h"
#include "tests.h"

static void test_tpm2_parse_pcrs_one(const char *s, uint32_t mask, int ret) {
        uint32_t m;

        assert_se(tpm2_parse_pcrs(s, &m) == ret);

        if (ret >= 0)
                assert_se(m == mask);
}

TEST(tpm2_parse_pcrs) {
        test_tpm2_parse_pcrs_one("", 0, 0);
        test_tpm2_parse_pcrs_one("0", 1, 0);
        test_tpm2_parse_pcrs_one("1", 2, 0);
        test_tpm2_parse_pcrs_one("0,1", 3, 0);
        test_tpm2_parse_pcrs_one("0+1", 3, 0);
        test_tpm2_parse_pcrs_one("0-1", 0, -EINVAL);
        test_tpm2_parse_pcrs_one("0,1,2", 7, 0);
        test_tpm2_parse_pcrs_one("0+1+2", 7, 0);
        test_tpm2_parse_pcrs_one("0+1,2", 7, 0);
        test_tpm2_parse_pcrs_one("0,1+2", 7, 0);
        test_tpm2_parse_pcrs_one("0,2", 5, 0);
        test_tpm2_parse_pcrs_one("0+2", 5, 0);
        test_tpm2_parse_pcrs_one("foo", 0, -EINVAL);
}

TEST(tpm2_util_pbkdf2_hmac_sha256) {

        /*
         * The test vectors from RFC 6070 [1] are for dkLen of 20 as it's SHA1
         * other RFCs I bumped into had various differing dkLen and iter counts,
         * so this was generated using Python's hmacmodule.
         *
         * 1. https://www.rfc-editor.org/rfc/rfc6070.html#page-2
         */
        static const struct {
                const uint8_t pass[256];
                size_t passlen;
                const uint8_t salt[256];
                size_t saltlen;
                uint8_t expected[SHA256_DIGEST_SIZE];
        } test_vectors[] = {
                { .pass={'f', 'o', 'o', 'p', 'a', 's', 's'},                                                                        .passlen=7,  .salt={'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5'}, .saltlen=16, .expected={0xCB, 0xEA, 0x27, 0x23, 0x9A, 0x65, 0x99, 0xF6, 0x8C, 0x26, 0x54, 0x80, 0x5C, 0x63, 0x61, 0xD2, 0x91, 0x0A, 0x60, 0x3F, 0xC2, 0xF5, 0xF0, 0xAB, 0x55, 0x8B, 0x46, 0x07, 0x60, 0x93, 0xAB, 0xCB} },
                { .pass={'f', 'o', 'o', 'p', 'a', 's', 's'},                                                                        .passlen=7,  .salt={0x00, 'h', 'f', 's', 'd', 'j', 'h', 'f', 'd', 'j', 'h', 'j', 'd', 'f', 's'},     .saltlen=15, .expected={0x2B, 0xDF, 0x52, 0x29, 0x48, 0x3F, 0x98, 0x25, 0x01, 0x19, 0xB4, 0x42, 0xBC, 0xA7, 0x38, 0x5D, 0xCD, 0x08, 0xBD, 0xDC, 0x33, 0xBF, 0x32, 0x5E, 0x31, 0x87, 0x54, 0xFF, 0x2C, 0x23, 0x68, 0xFF} },
                { .pass={'f', 'o', 'o', 'p', 'a', 's', 's'},                                                                        .passlen=7,  .salt={'m', 'y', 's', 'a', 0x00, 'l', 't'},                                             .saltlen=7,  .expected={0x7C, 0x24, 0xB4, 0x4D, 0x30, 0x11, 0x53, 0x24, 0x87, 0x56, 0x24, 0x10, 0xBA, 0x9F, 0xF2, 0x4E, 0xBB, 0xF5, 0x03, 0x56, 0x2B, 0xB1, 0xA1, 0x92, 0x8B, 0x5F, 0x32, 0x02, 0x23, 0x1F, 0x79, 0xE6} },
                { .pass={'p', 'a', 's', 's', 'w', 'i', 't', 'h', 'n', 'u', 'l', 'l', 0x00, 'p', 'a', 's', 's', 'w', 'o', 'r', 'd'}, .passlen=21, .salt={'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5'}, .saltlen=16, .expected={0xE9, 0x53, 0xB7, 0x1D, 0xAB, 0xD1, 0xC1, 0xF3, 0xC4, 0x7F, 0x18, 0x96, 0xDD, 0xD7, 0x6B, 0xC6, 0x6A, 0xBD, 0xFB, 0x12, 0x7C, 0xF8, 0x68, 0xDC, 0x6E, 0xEF, 0x29, 0xCC, 0x1B, 0x30, 0x5B, 0x74} },
                { .pass={'p', 'a', 's', 's', 'w', 'i', 't', 'h', 'n', 'u', 'l', 'l', 0x00, 'p', 'a', 's', 's', 'w', 'o', 'r', 'd'}, .passlen=21, .salt={0x00, 'h', 'f', 's', 'd', 'j', 'h', 'f', 'd', 'j', 'h', 'j', 'd', 'f', 's'},     .saltlen=15, .expected={0x51, 0xA3, 0x82, 0xA5, 0x2F, 0x48, 0x84, 0xB3, 0x02, 0x0D, 0xC2, 0x42, 0x9A, 0x8F, 0x86, 0xCC, 0x66, 0xFD, 0x65, 0x87, 0x89, 0x07, 0x2B, 0x07, 0x82, 0x42, 0xD6, 0x6D, 0x43, 0xB8, 0xFD, 0xCF} },
                { .pass={'p', 'a', 's', 's', 'w', 'i', 't', 'h', 'n', 'u', 'l', 'l', 0x00, 'p', 'a', 's', 's', 'w', 'o', 'r', 'd'}, .passlen=21, .salt={'m', 'y', 's', 'a', 0x00, 'l', 't'},                                             .saltlen=7,  .expected={0xEC, 0xFB, 0x5D, 0x5F, 0xF6, 0xA6, 0xE0, 0x79, 0x50, 0x64, 0x36, 0x64, 0xA3, 0x9A, 0x5C, 0xF3, 0x7A, 0x87, 0x0B, 0x64, 0x51, 0x59, 0x75, 0x64, 0x8B, 0x78, 0x2B, 0x62, 0x8F, 0x68, 0xD9, 0xCC} },
                { .pass={0x00, 'p', 'a', 's', 's'},                                                                                 .passlen=5,  .salt={'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5'}, .saltlen=16, .expected={0x8A, 0x9A, 0x47, 0x9A, 0x91, 0x22, 0x2F, 0x56, 0x29, 0x4F, 0x26, 0x00, 0xE7, 0xB3, 0xEB, 0x63, 0x6D, 0x51, 0xF2, 0x60, 0x17, 0x08, 0x20, 0x70, 0x82, 0x8F, 0xA3, 0xD7, 0xBE, 0x2B, 0xD5, 0x5D} },
                { .pass={0x00, 'p', 'a', 's', 's'},                                                                                 .passlen=5,  .salt={0x00, 'h', 'f', 's', 'd', 'j', 'h', 'f', 'd', 'j', 'h', 'j', 'd', 'f', 's'},     .saltlen=15, .expected={0x72, 0x3A, 0xF5, 0xF7, 0xCD, 0x6C, 0x12, 0xDD, 0x53, 0x28, 0x46, 0x0C, 0x19, 0x0E, 0xF2, 0x91, 0xDE, 0xEA, 0xF9, 0x6F, 0x74, 0x32, 0x34, 0x3F, 0x84, 0xED, 0x8D, 0x2A, 0xDE, 0xC9, 0xC6, 0x34} },
                { .pass={0x00, 'p', 'a', 's', 's'},                                                                                 .passlen=5,  .salt={'m', 'y', 's', 'a', 0x00, 'l', 't'},                                             .saltlen=7,  .expected={0xE3, 0x07, 0x12, 0xBE, 0xEE, 0xF5, 0x5D, 0x18, 0x72, 0xF4, 0xCF, 0xF1, 0x20, 0x6B, 0xD6, 0x66, 0xCD, 0x7C, 0xE7, 0x4F, 0xC2, 0x16, 0x70, 0x5B, 0x9B, 0x2F, 0x7D, 0xE2, 0x3B, 0x42, 0x3A, 0x1B} },
        };

        uint8_t res[SHA256_DIGEST_SIZE];
        for(size_t i = 0; i < sizeof(test_vectors)/sizeof(test_vectors[0]); i++) {

                int rc = tpm2_util_pbkdf2_hmac_sha256(
                                test_vectors[i].pass,
                                test_vectors[i].passlen,
                                test_vectors[i].salt,
                                test_vectors[i].saltlen,
                                res);
                assert_se(rc == 0);
                assert_se(memcmp(test_vectors[i].expected, res, SHA256_DIGEST_SIZE) == 0);
        }
}

DEFINE_TEST_MAIN(LOG_DEBUG);