/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Tests for host library vboot2 key functions
*/
#include <stdio.h>
#include <unistd.h>
#include "2sysincludes.h"
#include "2common.h"
#include "2rsa.h"
#include "vb2_common.h"
#include "host_common.h"
#include "host_key2.h"
#include "test_common.h"
/* Test only the algorithms we use */
struct alg_combo {
const char *name;
enum vb2_signature_algorithm sig_alg;
enum vb2_hash_algorithm hash_alg;
};
static const struct alg_combo test_algs[] = {
{"RSA2048/SHA-256", VB2_SIG_RSA2048, VB2_HASH_SHA256},
{"RSA4096/SHA-256", VB2_SIG_RSA4096, VB2_HASH_SHA256},
{"RSA8192/SHA-512", VB2_SIG_RSA8192, VB2_HASH_SHA512},
};
static void private_key_tests(const struct alg_combo *combo,
const char *pemfile)
{
struct vb2_private_key *key, *k2;
const struct vb2_private_key *ckey;
struct vb2_packed_private_key *pkey;
const char *testfile = "test.vbprik2";
const char *notapem = "not_a_pem";
const char *testdesc = "test desc";
const struct vb2_guid test_guid = {.raw = {0xaa}};
uint8_t *buf, *buf2;
uint32_t bufsize;
TEST_SUCC(vb2_private_key_read_pem(&key, pemfile), "Read pem - good");
TEST_PTR_NEQ(key, NULL, " key_ptr");
TEST_PTR_NEQ(key->rsa_private_key, NULL, " rsa_private_key");
TEST_PTR_EQ(key->desc, NULL, " desc");
vb2_private_key_free(key);
TEST_EQ(vb2_private_key_read_pem(&key, "no_such_key"),
VB2_ERROR_READ_PEM_FILE_OPEN, "Read pem - no key");
TEST_PTR_EQ(key, NULL, " key_ptr");
vb2_write_file(testfile, (const uint8_t *)notapem, sizeof(notapem));
TEST_EQ(vb2_private_key_read_pem(&key, testfile),
VB2_ERROR_READ_PEM_RSA, "Read pem - not a pem");
unlink(testfile);
TEST_SUCC(vb2_private_key_read_pem(&key, pemfile), "Read pem - good2");
TEST_SUCC(vb2_private_key_set_desc(key, testdesc), "Set desc");
TEST_PTR_NEQ(key->desc, NULL, " desc");
TEST_PTR_NEQ(key->desc, testdesc, " made a copy");
TEST_EQ(strcmp(key->desc, testdesc), 0, " right contents");
TEST_SUCC(vb2_private_key_set_desc(key, NULL), "Clear desc");
TEST_PTR_EQ(key->desc, NULL, " desc");
TEST_SUCC(vb2_private_key_set_desc(key, testdesc), "Set desc");
vb2_private_key_free(key);
TEST_SUCC(vb2_private_key_read_pem(&key, pemfile), "Read pem - good3");
TEST_SUCC(vb2_private_key_set_desc(key, testdesc), "Set desc");
key->hash_alg = combo->hash_alg;
key->sig_alg = combo->sig_alg;
key->guid = test_guid;
unlink(testfile);
TEST_EQ(vb2_private_key_read(&k2, testfile),
VB2_ERROR_READ_FILE_OPEN, "Read key no file");
TEST_EQ(vb2_private_key_write(key, "no/such/dir"),
VB2_ERROR_PRIVATE_KEY_WRITE_FILE, "Write key to bad path");
TEST_SUCC(vb2_private_key_write(key, testfile), "Write key good");
TEST_SUCC(vb2_private_key_read(&k2, testfile), "Read key good");
TEST_PTR_NEQ(k2, NULL, " key_ptr");
TEST_EQ(k2->sig_alg, key->sig_alg, " sig alg");
TEST_EQ(k2->hash_alg, key->hash_alg, " hash alg");
TEST_EQ(memcmp(&k2->guid, &key->guid, sizeof(k2->guid)), 0, " guid");
TEST_EQ(strcmp(k2->desc, testdesc), 0, " desc");
vb2_private_key_free(k2);
TEST_SUCC(vb2_read_file(testfile, &buf, &bufsize), "Read key raw");
pkey = (struct vb2_packed_private_key *)buf;
/* Make a backup of the good buffer so we can mangle it */
buf2 = malloc(bufsize);
memcpy(buf2, buf, bufsize);
TEST_SUCC(vb2_private_key_unpack(&k2, buf, bufsize),
"Unpack private key good");
vb2_private_key_free(k2);
memcpy(buf, buf2, bufsize);
pkey->c.magic = VB2_MAGIC_PACKED_KEY;
TEST_EQ(vb2_private_key_unpack(&k2, buf, bufsize),
VB2_ERROR_UNPACK_PRIVATE_KEY_MAGIC,
"Unpack private key bad magic");
TEST_PTR_EQ(k2, NULL, " key_ptr");
memcpy(buf, buf2, bufsize);
pkey->c.desc_size++;
TEST_EQ(vb2_private_key_unpack(&k2, buf, bufsize),
VB2_ERROR_UNPACK_PRIVATE_KEY_HEADER,
"Unpack private key bad header");
memcpy(buf, buf2, bufsize);
pkey->key_size += pkey->c.total_size;
TEST_EQ(vb2_private_key_unpack(&k2, buf, bufsize),
VB2_ERROR_UNPACK_PRIVATE_KEY_DATA,
"Unpack private key bad data size");
memcpy(buf, buf2, bufsize);
pkey->c.struct_version_major++;
TEST_EQ(vb2_private_key_unpack(&k2, buf, bufsize),
VB2_ERROR_UNPACK_PRIVATE_KEY_STRUCT_VERSION,
"Unpack private key bad struct version");
memcpy(buf, buf2, bufsize);
pkey->c.struct_version_minor++;
TEST_SUCC(vb2_private_key_unpack(&k2, buf, bufsize),
"Unpack private key minor version");
vb2_private_key_free(k2);
memcpy(buf, buf2, bufsize);
pkey->key_size -= 32;
TEST_EQ(vb2_private_key_unpack(&k2, buf, bufsize),
VB2_ERROR_UNPACK_PRIVATE_KEY_RSA,
"Unpack private key bad rsa data");
memcpy(buf, buf2, bufsize);
pkey->sig_alg = VB2_SIG_NONE;
TEST_EQ(vb2_private_key_unpack(&k2, buf, bufsize),
VB2_ERROR_UNPACK_PRIVATE_KEY_HASH,
"Unpack private key hash but has data");
free(buf);
free(buf2);
unlink(testfile);
TEST_EQ(vb2_private_key_hash(&ckey, VB2_HASH_INVALID),
VB2_ERROR_PRIVATE_KEY_HASH,
"Hash key invalid");
TEST_PTR_EQ(ckey, NULL, " key_ptr");
TEST_SUCC(vb2_private_key_hash(&ckey, combo->hash_alg), "Hash key");
TEST_PTR_NEQ(ckey, NULL, " key_ptr");
TEST_EQ(ckey->hash_alg, combo->hash_alg, " hash_alg");
TEST_EQ(ckey->sig_alg, VB2_SIG_NONE, " sig_alg");
TEST_EQ(memcmp(&ckey->guid, vb2_hash_guid(combo->hash_alg),
sizeof(ckey->guid)), 0, " guid");
TEST_SUCC(vb2_private_key_write(ckey, testfile), "Write hash key");
TEST_SUCC(vb2_private_key_read(&key, testfile), "Read hash key");
unlink(testfile);
}
static void public_key_tests(const struct alg_combo *combo,
const char *keybfile)
{
struct vb2_public_key *key, k2;
struct vb2_packed_key *pkey;
const char *testfile = "test.vbpubk2";
const char *testdesc = "test desc";
const struct vb2_guid test_guid = {.raw = {0xbb}};
const uint32_t test_version = 0xcc01;
uint8_t *buf;
uint32_t bufsize;
TEST_EQ(vb2_public_key_read_keyb(&key, "no_such_key"),
VB2_ERROR_READ_KEYB_DATA, "Read keyb - no file");
TEST_PTR_EQ(key, NULL, " key_ptr");
TEST_SUCC(vb2_public_key_read_keyb(&key, keybfile), "Read keyb - good");
TEST_PTR_NEQ(key, NULL, " key_ptr");
TEST_EQ(key->sig_alg, combo->sig_alg, " sig_alg");
TEST_PTR_EQ(key->desc, NULL, " desc");
vb2_public_key_free(key);
bufsize = vb2_packed_key_size(combo->sig_alg);
buf = calloc(1, bufsize);
vb2_write_file(testfile, buf, bufsize - 1);
TEST_EQ(vb2_public_key_read_keyb(&key, testfile),
VB2_ERROR_READ_KEYB_SIZE, "Read keyb - bad size");
unlink(testfile);
vb2_write_file(testfile, buf, bufsize);
free(buf);
TEST_EQ(vb2_public_key_read_keyb(&key, testfile),
VB2_ERROR_READ_KEYB_UNPACK, "Read keyb - unpack");
unlink(testfile);
TEST_SUCC(vb2_public_key_read_keyb(&key, keybfile), "Read keyb 2");
TEST_SUCC(vb2_public_key_set_desc(key, testdesc), "Set desc");
TEST_PTR_NEQ(key->desc, NULL, " desc");
TEST_PTR_NEQ(key->desc, testdesc, " made a copy");
TEST_EQ(strcmp(key->desc, testdesc), 0, " right contents");
TEST_SUCC(vb2_public_key_set_desc(key, NULL), "Clear desc");
TEST_PTR_EQ(key->desc, NULL, " desc");
TEST_SUCC(vb2_public_key_set_desc(key, testdesc), "Set desc");
vb2_public_key_free(key);
TEST_SUCC(vb2_public_key_read_keyb(&key, keybfile), "Read keyb 3");
TEST_SUCC(vb2_public_key_set_desc(key, testdesc), "Set desc");
key->hash_alg = combo->hash_alg;
key->guid = &test_guid;
key->version = test_version;
TEST_SUCC(vb2_public_key_pack(&pkey, key), "Pack public key");
TEST_PTR_NEQ(pkey, NULL, " key_ptr");
TEST_EQ(pkey->hash_alg, key->hash_alg, " hash_alg");
TEST_EQ(pkey->sig_alg, key->sig_alg, " sig_alg");
TEST_EQ(pkey->key_version, key->version, " version");
TEST_EQ(memcmp(&pkey->guid, key->guid, sizeof(pkey->guid)), 0,
" guid");
TEST_EQ(strcmp(vb2_common_desc(pkey), key->desc), 0, " desc");
TEST_SUCC(vb2_unpack_key(&k2, (uint8_t *)pkey, pkey->c.total_size),
"Unpack public key");
TEST_EQ(key->arrsize, k2.arrsize, " arrsize");
TEST_EQ(key->n0inv, k2.n0inv, " n0inv");
TEST_EQ(memcmp(key->n, k2.n, key->arrsize * sizeof(uint32_t)), 0,
" n");
TEST_EQ(memcmp(key->rr, k2.rr, key->arrsize * sizeof(uint32_t)), 0,
" rr");
TEST_SUCC(vb2_write_object(testfile, pkey), "Write packed key");
free(pkey);
TEST_SUCC(vb2_packed_key_read(&pkey, testfile), "Read packed key");
TEST_PTR_NEQ(pkey, NULL, " key_ptr");
unlink(testfile);
pkey->hash_alg = VB2_HASH_INVALID;
TEST_SUCC(vb2_write_object(testfile, pkey), "Write bad packed key");
free(pkey);
TEST_EQ(vb2_packed_key_read(&pkey, testfile),
VB2_ERROR_READ_PACKED_KEY, "Read bad packed key");
TEST_PTR_EQ(pkey, NULL, " key_ptr");
unlink(testfile);
TEST_EQ(vb2_packed_key_read(&pkey, testfile),
VB2_ERROR_READ_PACKED_KEY_DATA, "Read missing packed key");
key->sig_alg = VB2_SIG_INVALID;
TEST_EQ(vb2_public_key_pack(&pkey, key),
VB2_ERROR_PUBLIC_KEY_PACK_SIZE,
"Pack invalid sig alg");
vb2_public_key_free(key);
TEST_EQ(vb2_public_key_hash(&k2, VB2_HASH_INVALID),
VB2_ERROR_PUBLIC_KEY_HASH,
"Hash key invalid");
TEST_SUCC(vb2_public_key_hash(&k2, combo->hash_alg), "Hash key");
TEST_EQ(k2.hash_alg, combo->hash_alg, " hash_alg");
TEST_EQ(k2.sig_alg, VB2_SIG_NONE, " sig_alg");
TEST_EQ(memcmp(k2.guid, vb2_hash_guid(combo->hash_alg),
sizeof(*k2.guid)), 0, " guid");
TEST_SUCC(vb2_public_key_pack(&pkey, &k2), "Pack public hash key");
TEST_PTR_NEQ(pkey, NULL, " key_ptr");
TEST_SUCC(vb2_unpack_key(&k2, (uint8_t *)pkey, pkey->c.total_size),
"Unpack public hash key");
free(pkey);
}
static int test_algorithm(const struct alg_combo *combo, const char *keys_dir)
{
int rsa_bits = vb2_rsa_sig_size(combo->sig_alg) * 8;
char pemfile[1024];
char keybfile[1024];
printf("***Testing algorithm: %s\n", combo->name);
sprintf(pemfile, "%s/key_rsa%d.pem", keys_dir, rsa_bits);
sprintf(keybfile, "%s/key_rsa%d.keyb", keys_dir, rsa_bits);
private_key_tests(combo, pemfile);
public_key_tests(combo, keybfile);
return 0;
}
int main(int argc, char *argv[]) {
if (argc == 2) {
int i;
for (i = 0; i < ARRAY_SIZE(test_algs); i++) {
if (test_algorithm(test_algs + i, argv[1]))
return 1;
}
} else {
fprintf(stderr, "Usage: %s <keys_dir>", argv[0]);
return -1;
}
return gTestSuccess ? 0 : 255;
}