1*b13c0e40SEric Biggers // SPDX-License-Identifier: MIT
2*b13c0e40SEric Biggers /*
3*b13c0e40SEric Biggers * Test libfsverity_sign_digest().
4*b13c0e40SEric Biggers *
5*b13c0e40SEric Biggers * Copyright 2020 Google LLC
6*b13c0e40SEric Biggers *
7*b13c0e40SEric Biggers * Use of this source code is governed by an MIT-style
8*b13c0e40SEric Biggers * license that can be found in the LICENSE file or at
9*b13c0e40SEric Biggers * https://opensource.org/licenses/MIT.
10*b13c0e40SEric Biggers */
11*b13c0e40SEric Biggers
12*b13c0e40SEric Biggers #include "utils.h"
13*b13c0e40SEric Biggers
14*b13c0e40SEric Biggers #include <fcntl.h>
15*b13c0e40SEric Biggers
16*b13c0e40SEric Biggers #define SHA256_DIGEST_SIZE 32
17*b13c0e40SEric Biggers
main(void)18*b13c0e40SEric Biggers int main(void)
19*b13c0e40SEric Biggers {
20*b13c0e40SEric Biggers struct libfsverity_digest *d = xzalloc(sizeof(*d) + SHA256_DIGEST_SIZE);
21*b13c0e40SEric Biggers const struct libfsverity_signature_params params = {
22*b13c0e40SEric Biggers .keyfile = "testdata/key.pem",
23*b13c0e40SEric Biggers .certfile = "testdata/cert.pem",
24*b13c0e40SEric Biggers };
25*b13c0e40SEric Biggers u8 *sig;
26*b13c0e40SEric Biggers size_t sig_size;
27*b13c0e40SEric Biggers struct filedes file;
28*b13c0e40SEric Biggers u8 *expected_sig;
29*b13c0e40SEric Biggers u64 expected_sig_size;
30*b13c0e40SEric Biggers int err;
31*b13c0e40SEric Biggers
32*b13c0e40SEric Biggers install_libfsverity_error_handler();
33*b13c0e40SEric Biggers
34*b13c0e40SEric Biggers d->digest_algorithm = FS_VERITY_HASH_ALG_SHA256;
35*b13c0e40SEric Biggers d->digest_size = SHA256_DIGEST_SIZE;
36*b13c0e40SEric Biggers memcpy(d->digest,
37*b13c0e40SEric Biggers "\x91\x79\x00\xb0\xd2\x99\x45\x4a\xa3\x04\xd5\xde\xbc\x6f\x39"
38*b13c0e40SEric Biggers "\xe4\xaf\x7b\x5a\xbe\x33\xbd\xbc\x56\x8d\x5d\x8f\x1e\x5c\x4d"
39*b13c0e40SEric Biggers "\x86\x52", SHA256_DIGEST_SIZE);
40*b13c0e40SEric Biggers
41*b13c0e40SEric Biggers err = libfsverity_sign_digest(d, ¶ms, &sig, &sig_size);
42*b13c0e40SEric Biggers ASSERT(err == 0);
43*b13c0e40SEric Biggers
44*b13c0e40SEric Biggers ASSERT(open_file(&file, "testdata/file.sig", O_RDONLY, 0));
45*b13c0e40SEric Biggers ASSERT(get_file_size(&file, &expected_sig_size));
46*b13c0e40SEric Biggers ASSERT(sig_size == expected_sig_size);
47*b13c0e40SEric Biggers expected_sig = xmalloc(sig_size);
48*b13c0e40SEric Biggers ASSERT(full_read(&file, expected_sig, sig_size));
49*b13c0e40SEric Biggers ASSERT(!memcmp(sig, expected_sig, sig_size));
50*b13c0e40SEric Biggers
51*b13c0e40SEric Biggers free(d);
52*b13c0e40SEric Biggers free(sig);
53*b13c0e40SEric Biggers free(expected_sig);
54*b13c0e40SEric Biggers filedes_close(&file);
55*b13c0e40SEric Biggers printf("test_sign_digest passed\n");
56*b13c0e40SEric Biggers return 0;
57*b13c0e40SEric Biggers }
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