From: Eric Biggers <ebiggers@xxxxxxxxxx> Add three test programs: 'test_hash_algs', 'test_compute_digest', and 'test_sign_digest'. Nothing fancy yet, just some basic tests to test each library function. With the new Makefile, these get run by 'make check'. Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx> --- programs/test_compute_digest.c | 54 +++++++++++++++++++++++++++++++++ programs/test_hash_algs.c | 27 +++++++++++++++++ programs/test_sign_digest.c | 44 +++++++++++++++++++++++++++ testdata/cert.pem | 31 +++++++++++++++++++ testdata/file.sig | Bin 0 -> 708 bytes testdata/key.pem | 52 +++++++++++++++++++++++++++++++ 6 files changed, 208 insertions(+) create mode 100644 programs/test_compute_digest.c create mode 100644 programs/test_hash_algs.c create mode 100644 programs/test_sign_digest.c create mode 100644 testdata/cert.pem create mode 100644 testdata/file.sig create mode 100644 testdata/key.pem diff --git a/programs/test_compute_digest.c b/programs/test_compute_digest.c new file mode 100644 index 0000000..5d00576 --- /dev/null +++ b/programs/test_compute_digest.c @@ -0,0 +1,54 @@ +// SPDX-License-Identifier: GPL-2.0+ +#include "utils.h" + +struct file { + u8 *data; + size_t size; + size_t offset; +}; + +static int read_fn(void *fd, void *buf, size_t count) +{ + struct file *f = fd; + + ASSERT(count <= f->size - f->offset); + memcpy(buf, &f->data[f->offset], count); + f->offset += count; + return 0; +} + +int main(void) +{ + struct file f = { .size = 1000000 }; + size_t i; + const struct libfsverity_merkle_tree_params params = { + .version = 1, + .hash_algorithm = FS_VERITY_HASH_ALG_SHA256, + .block_size = 4096, + .salt_size = 4, + .salt = (u8 *)"abcd", + .file_size = f.size, + }; + struct libfsverity_digest *d; + static const u8 expected_digest[32] = + "\x91\x79\x00\xb0\xd2\x99\x45\x4a\xa3\x04\xd5\xde\xbc\x6f\x39" + "\xe4\xaf\x7b\x5a\xbe\x33\xbd\xbc\x56\x8d\x5d\x8f\x1e\x5c\x4d" + "\x86\x52"; + int err; + + f.data = xmalloc(f.size); + for (i = 0; i < f.size; i++) + f.data[i] = (i % 11) + (i % 439) + (i % 1103); + + err = libfsverity_compute_digest(&f, read_fn, ¶ms, &d); + ASSERT(err == 0); + + ASSERT(d->digest_algorithm == FS_VERITY_HASH_ALG_SHA256); + ASSERT(d->digest_size == 32); + ASSERT(!memcmp(d->digest, expected_digest, 32)); + + free(f.data); + free(d); + printf("test_compute_digest passed\n"); + return 0; +} diff --git a/programs/test_hash_algs.c b/programs/test_hash_algs.c new file mode 100644 index 0000000..b7db2ac --- /dev/null +++ b/programs/test_hash_algs.c @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0+ +#include "utils.h" + +int main(void) +{ + ASSERT(libfsverity_digest_size(0) == -1); + ASSERT(libfsverity_hash_name(0) == NULL); + ASSERT(libfsverity_find_hash_alg_by_name("bad") == 0); + + ASSERT(libfsverity_digest_size(100) == -1); + ASSERT(libfsverity_hash_name(100) == NULL); + + ASSERT(libfsverity_digest_size(FS_VERITY_HASH_ALG_SHA256) == 32); + ASSERT(!strcmp("sha256", + libfsverity_hash_name(FS_VERITY_HASH_ALG_SHA256))); + ASSERT(libfsverity_find_hash_alg_by_name("sha256") == + FS_VERITY_HASH_ALG_SHA256); + + ASSERT(libfsverity_digest_size(FS_VERITY_HASH_ALG_SHA512) == 64); + ASSERT(!strcmp("sha512", + libfsverity_hash_name(FS_VERITY_HASH_ALG_SHA512))); + ASSERT(libfsverity_find_hash_alg_by_name("sha512") == + FS_VERITY_HASH_ALG_SHA512); + + printf("test_hash_algs passed\n"); + return 0; +} diff --git a/programs/test_sign_digest.c b/programs/test_sign_digest.c new file mode 100644 index 0000000..0a97865 --- /dev/null +++ b/programs/test_sign_digest.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0+ +#include "utils.h" + +#include <fcntl.h> + +int main(void) +{ + struct libfsverity_digest *d = xzalloc(sizeof(*d) + 32); + u8 *sig; + size_t sig_size; + struct libfsverity_signature_params params = { + .keyfile = "testdata/key.pem", + .certfile = "testdata/cert.pem", + }; + struct filedes file; + u8 *expected_sig; + u64 expected_sig_size; + int err; + + d->digest_algorithm = FS_VERITY_HASH_ALG_SHA256; + d->digest_size = 32; + memcpy(d->digest, + "\x91\x79\x00\xb0\xd2\x99\x45\x4a\xa3\x04\xd5\xde\xbc\x6f\x39" + "\xe4\xaf\x7b\x5a\xbe\x33\xbd\xbc\x56\x8d\x5d\x8f\x1e\x5c\x4d" + "\x86\x52", 32); + + err = libfsverity_sign_digest(d, ¶ms, &sig, &sig_size); + ASSERT(err == 0); + + ASSERT(open_file(&file, "testdata/file.sig", O_RDONLY, 0)); + ASSERT(get_file_size(&file, &expected_sig_size)); + ASSERT(sig_size == expected_sig_size); + expected_sig = xmalloc(sig_size); + ASSERT(full_read(&file, expected_sig, sig_size)); + ASSERT(!memcmp(sig, expected_sig, sig_size)); + + free(d); + free(sig); + free(expected_sig); + filedes_close(&file); + printf("test_sign_digest passed\n"); + return 0; +} + diff --git a/testdata/cert.pem b/testdata/cert.pem new file mode 100644 index 0000000..c63b965 --- /dev/null +++ b/testdata/cert.pem @@ -0,0 +1,31 @@ +-----BEGIN CERTIFICATE----- +MIIFazCCA1OgAwIBAgIUYaRYcyZGDIv9fIxx/RoJwQu23+owDQYJKoZIhvcNAQEL +BQAwRTELMAkGA1UEBhMCQVUxEzARBgNVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoM +GEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZDAeFw0yMDA1MTUwMjUyMzFaFw0yMDA2 +MTQwMjUyMzFaMEUxCzAJBgNVBAYTAkFVMRMwEQYDVQQIDApTb21lLVN0YXRlMSEw +HwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQwggIiMA0GCSqGSIb3DQEB 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