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/* 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 "2common.h"
#include "2rsa.h"
#include "2sysincludes.h"
#include "host_common.h"
#include "host_common21.h"
#include "host_key21.h"
#include "host_signature21.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},
};
const struct vb2_id test_id = {.raw = {0xaa}};
const char *test_desc = "The test key";
const char *test_sig_desc = "The test signature";
const uint8_t test_data[] = "Some test data";
const uint32_t test_size = sizeof(test_data);
static void sig_tests(const struct alg_combo *combo,
const char *pemfile,
const char *keybfile)
{
struct vb2_private_key *prik, prik2;
const struct vb2_private_key *prihash, *priks[2];
struct vb2_public_key *pubk, pubhash;
struct vb21_signature *sig, *sig2;
uint32_t size;
uint8_t workbuf[VB2_VERIFY_DATA_WORKBUF_BYTES]
__attribute__((aligned(VB2_WORKBUF_ALIGN)));
struct vb2_workbuf wb;
uint8_t *buf;
uint32_t bufsize;
struct vb21_struct_common *c;
uint32_t c_sig_offs;
vb2_workbuf_init(&wb, workbuf, sizeof(workbuf));
/* Create test keys */
/* TODO: should read these from .vbprik2, .vbpubk2 files */
TEST_SUCC(vb2_private_key_read_pem(&prik, pemfile), "Read private key");
prik->id = test_id;
prik->hash_alg = combo->hash_alg;
prik->sig_alg = combo->sig_alg;
vb2_private_key_set_desc(prik, test_desc);
TEST_SUCC(vb2_public_key_read_keyb(&pubk, keybfile), "Read pub key");
pubk->id = &test_id;
pubk->hash_alg = combo->hash_alg;
vb2_public_key_set_desc(pubk, test_desc);
TEST_SUCC(vb2_private_key_hash(&prihash, combo->hash_alg),
"Private hash key");
TEST_SUCC(vb2_public_key_hash(&pubhash, combo->hash_alg),
"Public hash key");
priks[0] = prik;
priks[1] = prihash;
/* Sign test data */
TEST_SUCC(vb21_sign_data(&sig, test_data, test_size, prik, NULL),
"Sign good");
TEST_PTR_NEQ(sig, NULL, " sig_ptr");
TEST_EQ(0, strcmp(vb21_common_desc(sig), test_desc), " desc");
TEST_EQ(0, memcmp(&sig->id, &test_id, sizeof(test_id)), " id");
TEST_EQ(sig->data_size, test_size, " data_size");
TEST_SUCC(vb21_sig_size_for_key(&size, prik, NULL), "Sig size");
TEST_EQ(size, sig->c.total_size, " size");
TEST_SUCC(vb21_verify_data(test_data, test_size, sig, pubk, &wb),
"Verify good");
free(sig);
TEST_SUCC(vb21_sign_data(&sig, test_data, test_size, prik,
test_sig_desc),
"Sign with desc");
TEST_EQ(0, strcmp(vb21_common_desc(sig), test_sig_desc), " desc");
free(sig);
TEST_SUCC(vb21_sign_data(&sig, test_data, test_size, prik, ""),
"Sign with no desc");
TEST_EQ(sig->c.desc_size, 0, " desc");
TEST_SUCC(vb21_sig_size_for_key(&size, prik, ""), "Sig size");
TEST_EQ(size, sig->c.total_size, " size");
free(sig);
TEST_SUCC(vb21_sign_data(&sig, test_data, test_size, prihash, NULL),
"Sign with hash");
TEST_SUCC(vb21_verify_data(test_data, test_size, sig, &pubhash, &wb),
"Verify with hash");
free(sig);
prik2 = *prik;
prik2.sig_alg = VB2_SIG_INVALID;
TEST_EQ(vb21_sign_data(&sig, test_data, test_size, &prik2, NULL),
VB2_SIGN_DATA_SIG_SIZE, "Sign bad sig alg");
/* Sign an object with a little (24 bytes) data */
c_sig_offs = sizeof(*c) + 24;
TEST_SUCC(vb21_sig_size_for_key(&size, prik, NULL), "Sig size");
bufsize = c_sig_offs + size;
buf = calloc(1, bufsize);
memset(buf + sizeof(*c), 0x12, 24);
c = (struct vb21_struct_common *)buf;
c->total_size = bufsize;
TEST_SUCC(vb21_sign_object(buf, c_sig_offs, prik, NULL), "Sign object");
sig = (struct vb21_signature *)(buf + c_sig_offs);
TEST_SUCC(vb21_verify_data(buf, c_sig_offs, sig, pubk, &wb),
"Verify object");
TEST_EQ(vb21_sign_object(buf, c_sig_offs + 4, prik, NULL),
VB2_SIGN_OBJECT_OVERFLOW, "Sign object overflow");
free(buf);
/* Multiply sign an object */
TEST_SUCC(vb21_sig_size_for_keys(&size, priks, 2), "Sigs size");
bufsize = c_sig_offs + size;
buf = calloc(1, bufsize);
memset(buf + sizeof(*c), 0x12, 24);
c = (struct vb21_struct_common *)buf;
c->total_size = bufsize;
TEST_SUCC(vb21_sign_object_multiple(buf, c_sig_offs, priks, 2),
"Sign multiple");
sig = (struct vb21_signature *)(buf + c_sig_offs);
TEST_SUCC(vb21_verify_data(buf, c_sig_offs, sig, pubk, &wb),
"Verify object with sig 1");
sig2 = (struct vb21_signature *)(buf + c_sig_offs + sig->c.total_size);
TEST_SUCC(vb21_verify_data(buf, c_sig_offs, sig2, &pubhash, &wb),
"Verify object with sig 2");
c->total_size -= 4;
TEST_EQ(vb21_sign_object_multiple(buf, c_sig_offs, priks, 2),
VB2_SIGN_OBJECT_OVERFLOW, "Sign multple overflow");
TEST_EQ(size, sig->c.total_size + sig2->c.total_size,
"Sigs size total");
free(buf);
vb2_private_key_free(prik);
vb2_public_key_free(pubk);
}
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);
snprintf(pemfile, sizeof(pemfile),
"%s/key_rsa%d.pem", keys_dir, rsa_bits);
snprintf(keybfile, sizeof(keybfile),
"%s/key_rsa%d.keyb", keys_dir, rsa_bits);
sig_tests(combo, pemfile, 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;
}
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