tests/vb2_common2_tests.c - mirrors/cros/chromiumos/platform/vboot_reference - Git at Google

 /* 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 firmware image library.
  */

 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>

 #include "file_keys.h"
 #include "host_common.h"
 #include "vb2_convert_structs.h"
 #include "vboot_common.h"
 #include "test_common.h"

 #include "2common.h"
 #include "2rsa.h"

 static void test_unpack_key(const VbPublicKey *orig_key)
 {
 	struct vb2_public_key rsa;
 	VbPublicKey *key = PublicKeyAlloc(orig_key->key_size, 0, 0);

 	/* vb2_packed_key and VbPublicKey are bit-identical */
 	struct vb2_packed_key *key2 = (struct vb2_packed_key *)key;
 	uint8_t *buf = (uint8_t *)key;

 	/*
 	 * Key data follows the header for a newly allocated key, so we can
 	 * calculate the buffer size by looking at how far the key data goes.
 	 */
 	uint32_t size = key2->key_offset + key2->key_size;

 	PublicKeyCopy(key, orig_key);
 	TEST_SUCC(vb2_unpack_key(&rsa, buf, size), "vb2_unpack_key() ok");

 	TEST_EQ(rsa.sig_alg, vb2_crypto_to_signature(key2->algorithm),
 		"vb2_unpack_key() sig_alg");
 	TEST_EQ(rsa.hash_alg, vb2_crypto_to_hash(key2->algorithm),
 		"vb2_unpack_key() hash_alg");


 	PublicKeyCopy(key, orig_key);
 	key2->algorithm = VB2_ALG_COUNT;
 	TEST_EQ(vb2_unpack_key(&rsa, buf, size),
 		VB2_ERROR_UNPACK_KEY_SIG_ALGORITHM,
 		"vb2_unpack_key() invalid algorithm");

 	PublicKeyCopy(key, orig_key);
 	key2->key_size--;
 	TEST_EQ(vb2_unpack_key(&rsa, buf, size),
 		VB2_ERROR_UNPACK_KEY_SIZE,
 		"vb2_unpack_key() invalid size");
 	key2->key_size++;

 	PublicKeyCopy(key, orig_key);
 	key2->key_offset++;
 	TEST_EQ(vb2_unpack_key(&rsa, buf, size + 1),
 		VB2_ERROR_UNPACK_KEY_ALIGN,
 		"vb2_unpack_key() unaligned data");
 	key2->key_offset--;

 	PublicKeyCopy(key, orig_key);
 	*(uint32_t *)(buf + key2->key_offset) /= 2;
 	TEST_EQ(vb2_unpack_key(&rsa, buf, size),
 		VB2_ERROR_UNPACK_KEY_ARRAY_SIZE,
 		"vb2_unpack_key() invalid key array size");

 	PublicKeyCopy(key, orig_key);
 	TEST_EQ(vb2_unpack_key(&rsa, buf, size - 1),
 		VB2_ERROR_INSIDE_DATA_OUTSIDE,
 		"vb2_unpack_key() buffer too small");

 	free(key);
 }

 static void test_unpack_key2(const VbPublicKey *orig_key)
 {
 	/* vb2_packed_key and VbPublicKey are bit-identical */
 	const struct vb2_packed_key *key1 =
 		(const struct vb2_packed_key *)orig_key;

 	struct vb2_public_key pubk;
 	struct vb2_packed_key2 *key2;
 	uint32_t size;

 	/* Should be able to handle a vboot1-style key binary as well */
 	TEST_SUCC(vb2_unpack_key2(&pubk, (uint8_t *)key1,
 				  key1->key_offset + key1->key_size),
 		  "vb2_unpack_key2() passthru");

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	TEST_SUCC(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		  "vb2_unpack_key2() ok");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->key_offset += 4;
 	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		VB2_ERROR_INSIDE_DATA_OUTSIDE,
 		"vb2_unpack_key2() buffer too small");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->c.desc_offset += size;
 	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		VB2_ERROR_INSIDE_DATA_OUTSIDE,
 		"vb2_unpack_key2() buffer too small for desc");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->c.desc_size = 0;
 	key2->c.desc_offset = 0;
 	TEST_SUCC(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		  "vb2_unpack_key2() no desc");
 	TEST_EQ(strcmp(pubk.desc, ""), 0, "  empty desc string");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->c.magic++;
 	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		VB2_ERROR_INSIDE_DATA_OUTSIDE,
 		"vb2_unpack_key2() bad magic");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->c.struct_version_major++;
 	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		VB2_ERROR_UNPACK_KEY_STRUCT_VERSION,
 		"vb2_unpack_key2() bad major version");
 	free(key2);

 	/*
 	 * Minor version changes are ok.  Note that this test assumes that the
 	 * source key struct version is the highest actually known to the
 	 * reader.  If the reader does know about minor version + 1 and that
 	 * adds fields, this test will likely fail.  But at that point, we
 	 * should have already added a test for minor version compatibility to
 	 * handle both old and new struct versions, so someone will have
 	 * noticed this comment.
 	 */
 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->c.struct_version_minor++;
 	TEST_SUCC(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		  "vb2_unpack_key2() minor version change ok");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->sig_algorithm = VB2_SIG_INVALID;
 	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		VB2_ERROR_UNPACK_KEY_SIG_ALGORITHM,
 		"vb2_unpack_key2() bad sig algorithm");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->hash_algorithm = VB2_HASH_INVALID;
 	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		VB2_ERROR_UNPACK_KEY_HASH_ALGORITHM,
 		"vb2_unpack_key2() bad hash algorithm");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->key_size--;
 	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		VB2_ERROR_UNPACK_KEY_SIZE,
 		"vb2_unpack_key2() invalid size");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	key2->key_offset--;
 	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		VB2_ERROR_UNPACK_KEY_ALIGN,
 		"vb2_unpack_key2() unaligned data");
 	free(key2);

 	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
 	*(uint32_t *)((uint8_t *)key2 + key2->key_offset) /= 2;
 	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
 		VB2_ERROR_UNPACK_KEY_ARRAY_SIZE,
 		"vb2_unpack_key2() invalid key array size");
 	free(key2);
 }

 static void test_verify_data(const VbPublicKey *public_key,
 			     const VbPrivateKey *private_key)
 {
 	const uint8_t test_data[] = "This is some test data to sign.";
 	const uint64_t test_size = sizeof(test_data);
 	uint8_t workbuf[VB2_VERIFY_DATA_WORKBUF_BYTES];
 	struct vb2_workbuf wb;
 	VbSignature *sig;

 	struct vb2_public_key rsa, rsa_orig;
 	struct vb2_signature *sig2;
 	struct vb2_packed_key *public_key2;

 	vb2_workbuf_init(&wb, workbuf, sizeof(workbuf));

 	/* Vb2 structs are bit-identical to the old ones */
 	public_key2 = (struct vb2_packed_key *)public_key;
 	uint32_t pubkey_size = public_key2->key_offset + public_key2->key_size;

 	/* Calculate good signature */
 	sig = CalculateSignature(test_data, test_size, private_key);
 	TEST_PTR_NEQ(sig, 0, "VerifyData() calculate signature");
 	if (!sig)
 		return;

 	/* Allocate signature copy for tests */
 	sig2 = (struct vb2_signature *)
 		SignatureAlloc(siglen_map[public_key2->algorithm], 0);

 	TEST_EQ(vb2_unpack_key(&rsa, (uint8_t *)public_key2, pubkey_size),
 		0, "vb2_verify_data() unpack key");
 	rsa_orig = rsa;

 	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
 	rsa.sig_alg = VB2_SIG_INVALID;
 	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
 		 0, "vb2_verify_data() bad sig alg");
 	rsa.sig_alg = rsa_orig.sig_alg;

 	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
 	rsa.hash_alg = VB2_HASH_INVALID;
 	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
 		 0, "vb2_verify_data() bad hash alg");
 	rsa.hash_alg = rsa_orig.hash_alg;

 	vb2_workbuf_init(&wb, workbuf, 4);
 	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
 	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
 		 0, "vb2_verify_data() workbuf too small");
 	vb2_workbuf_init(&wb, workbuf, sizeof(workbuf));

 	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
 	TEST_EQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
 		0, "vb2_verify_data() ok");

 	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
 	sig2->sig_size -= 16;
 	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
 		 0, "vb2_verify_data() wrong sig size");

 	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
 	TEST_NEQ(vb2_verify_data(test_data, test_size - 1, sig2, &rsa, &wb),
 		 0, "vb2_verify_data() input buffer too small");

 	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
 	vb2_signature_data(sig2)[0] ^= 0x5A;
 	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
 		 0, "vb2_verify_data() wrong sig");

 	free(sig);
 	free(sig2);
 }

 int test_algorithm(int key_algorithm, const char *keys_dir)
 {
 	char filename[1024];
 	int rsa_len = siglen_map[key_algorithm] * 8;

 	VbPrivateKey *private_key = NULL;
 	VbPublicKey *public_key = NULL;

 	printf("***Testing algorithm: %s\n", algo_strings[key_algorithm]);

 	sprintf(filename, "%s/key_rsa%d.pem", keys_dir, rsa_len);
 	private_key = PrivateKeyReadPem(filename, key_algorithm);
 	if (!private_key) {
 		fprintf(stderr, "Error reading private_key: %s\n", filename);
 		return 1;
 	}

 	sprintf(filename, "%s/key_rsa%d.keyb", keys_dir, rsa_len);
 	public_key = PublicKeyReadKeyb(filename, key_algorithm, 1);
 	if (!public_key) {
 		fprintf(stderr, "Error reading public_key: %s\n", filename);
 		return 1;
 	}

 	test_unpack_key(public_key);
 	test_unpack_key2(public_key);
 	test_verify_data(public_key, private_key);

 	if (public_key)
 		free(public_key);
 	if (private_key)
 		free(private_key);

 	return 0;
 }

 /* Test only the algorithms we use */
 const int key_algs[] = {
 	VB2_ALG_RSA2048_SHA256,
 	VB2_ALG_RSA4096_SHA256,
 	VB2_ALG_RSA8192_SHA512,
 };

 int main(int argc, char *argv[]) {

 	if (argc == 2) {
 		int i;

 		for (i = 0; i < ARRAY_SIZE(key_algs); i++) {
 			if (test_algorithm(key_algs[i], argv[1]))
 				return 1;
 		}

 	} else if (argc == 3 && !strcasecmp(argv[2], "--all")) {
 		/* Test all the algorithms */
 		int alg;

 		for (alg = 0; alg < kNumAlgorithms; alg++) {
 			if (test_algorithm(alg, argv[1]))
 				return 1;
 		}

 	} else {
 		fprintf(stderr, "Usage: %s <keys_dir> [--all]", argv[0]);
 		return -1;
 	}

 	return gTestSuccess ? 0 : 255;
 }
	/* 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 firmware image library.
	*/

	#include <stdint.h>
	#include <stdio.h>
	#include <string.h>

	#include "file_keys.h"
	#include "host_common.h"
	#include "vb2_convert_structs.h"
	#include "vboot_common.h"
	#include "test_common.h"

	#include "2common.h"
	#include "2rsa.h"

	static void test_unpack_key(const VbPublicKey *orig_key)
	{
	struct vb2_public_key rsa;
	VbPublicKey *key = PublicKeyAlloc(orig_key->key_size, 0, 0);

	/* vb2_packed_key and VbPublicKey are bit-identical */
	struct vb2_packed_key key2 = (struct vb2_packed_key )key;
	uint8_t buf = (uint8_t )key;

	/*
	* Key data follows the header for a newly allocated key, so we can
	* calculate the buffer size by looking at how far the key data goes.
	*/
	uint32_t size = key2->key_offset + key2->key_size;

	PublicKeyCopy(key, orig_key);
	TEST_SUCC(vb2_unpack_key(&rsa, buf, size), "vb2_unpack_key() ok");

	TEST_EQ(rsa.sig_alg, vb2_crypto_to_signature(key2->algorithm),
	"vb2_unpack_key() sig_alg");
	TEST_EQ(rsa.hash_alg, vb2_crypto_to_hash(key2->algorithm),
	"vb2_unpack_key() hash_alg");


	PublicKeyCopy(key, orig_key);
	key2->algorithm = VB2_ALG_COUNT;
	TEST_EQ(vb2_unpack_key(&rsa, buf, size),
	VB2_ERROR_UNPACK_KEY_SIG_ALGORITHM,
	"vb2_unpack_key() invalid algorithm");

	PublicKeyCopy(key, orig_key);
	key2->key_size--;
	TEST_EQ(vb2_unpack_key(&rsa, buf, size),
	VB2_ERROR_UNPACK_KEY_SIZE,
	"vb2_unpack_key() invalid size");
	key2->key_size++;

	PublicKeyCopy(key, orig_key);
	key2->key_offset++;
	TEST_EQ(vb2_unpack_key(&rsa, buf, size + 1),
	VB2_ERROR_UNPACK_KEY_ALIGN,
	"vb2_unpack_key() unaligned data");
	key2->key_offset--;

	PublicKeyCopy(key, orig_key);
	(uint32_t )(buf + key2->key_offset) /= 2;
	TEST_EQ(vb2_unpack_key(&rsa, buf, size),
	VB2_ERROR_UNPACK_KEY_ARRAY_SIZE,
	"vb2_unpack_key() invalid key array size");

	PublicKeyCopy(key, orig_key);
	TEST_EQ(vb2_unpack_key(&rsa, buf, size - 1),
	VB2_ERROR_INSIDE_DATA_OUTSIDE,
	"vb2_unpack_key() buffer too small");

	free(key);
	}

	static void test_unpack_key2(const VbPublicKey *orig_key)
	{
	/* vb2_packed_key and VbPublicKey are bit-identical */
	const struct vb2_packed_key *key1 =
	(const struct vb2_packed_key *)orig_key;

	struct vb2_public_key pubk;
	struct vb2_packed_key2 *key2;
	uint32_t size;

	/* Should be able to handle a vboot1-style key binary as well */
	TEST_SUCC(vb2_unpack_key2(&pubk, (uint8_t *)key1,
	key1->key_offset + key1->key_size),
	"vb2_unpack_key2() passthru");

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	TEST_SUCC(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	"vb2_unpack_key2() ok");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->key_offset += 4;
	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	VB2_ERROR_INSIDE_DATA_OUTSIDE,
	"vb2_unpack_key2() buffer too small");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->c.desc_offset += size;
	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	VB2_ERROR_INSIDE_DATA_OUTSIDE,
	"vb2_unpack_key2() buffer too small for desc");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->c.desc_size = 0;
	key2->c.desc_offset = 0;
	TEST_SUCC(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	"vb2_unpack_key2() no desc");
	TEST_EQ(strcmp(pubk.desc, ""), 0, " empty desc string");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->c.magic++;
	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	VB2_ERROR_INSIDE_DATA_OUTSIDE,
	"vb2_unpack_key2() bad magic");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->c.struct_version_major++;
	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	VB2_ERROR_UNPACK_KEY_STRUCT_VERSION,
	"vb2_unpack_key2() bad major version");
	free(key2);

	/*
	* Minor version changes are ok. Note that this test assumes that the
	* source key struct version is the highest actually known to the
	* reader. If the reader does know about minor version + 1 and that
	* adds fields, this test will likely fail. But at that point, we
	* should have already added a test for minor version compatibility to
	* handle both old and new struct versions, so someone will have
	* noticed this comment.
	*/
	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->c.struct_version_minor++;
	TEST_SUCC(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	"vb2_unpack_key2() minor version change ok");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->sig_algorithm = VB2_SIG_INVALID;
	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	VB2_ERROR_UNPACK_KEY_SIG_ALGORITHM,
	"vb2_unpack_key2() bad sig algorithm");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->hash_algorithm = VB2_HASH_INVALID;
	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	VB2_ERROR_UNPACK_KEY_HASH_ALGORITHM,
	"vb2_unpack_key2() bad hash algorithm");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->key_size--;
	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	VB2_ERROR_UNPACK_KEY_SIZE,
	"vb2_unpack_key2() invalid size");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	key2->key_offset--;
	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	VB2_ERROR_UNPACK_KEY_ALIGN,
	"vb2_unpack_key2() unaligned data");
	free(key2);

	key2 = vb2_convert_packed_key2(key1, "Test key", &size);
	(uint32_t )((uint8_t *)key2 + key2->key_offset) /= 2;
	TEST_EQ(vb2_unpack_key2(&pubk, (uint8_t *)key2, size),
	VB2_ERROR_UNPACK_KEY_ARRAY_SIZE,
	"vb2_unpack_key2() invalid key array size");
	free(key2);
	}

	static void test_verify_data(const VbPublicKey *public_key,
	const VbPrivateKey *private_key)
	{
	const uint8_t test_data[] = "This is some test data to sign.";
	const uint64_t test_size = sizeof(test_data);
	uint8_t workbuf[VB2_VERIFY_DATA_WORKBUF_BYTES];
	struct vb2_workbuf wb;
	VbSignature *sig;

	struct vb2_public_key rsa, rsa_orig;
	struct vb2_signature *sig2;
	struct vb2_packed_key *public_key2;

	vb2_workbuf_init(&wb, workbuf, sizeof(workbuf));

	/* Vb2 structs are bit-identical to the old ones */
	public_key2 = (struct vb2_packed_key *)public_key;
	uint32_t pubkey_size = public_key2->key_offset + public_key2->key_size;

	/* Calculate good signature */
	sig = CalculateSignature(test_data, test_size, private_key);
	TEST_PTR_NEQ(sig, 0, "VerifyData() calculate signature");
	if (!sig)
	return;

	/* Allocate signature copy for tests */
	sig2 = (struct vb2_signature *)
	SignatureAlloc(siglen_map[public_key2->algorithm], 0);

	TEST_EQ(vb2_unpack_key(&rsa, (uint8_t *)public_key2, pubkey_size),
	0, "vb2_verify_data() unpack key");
	rsa_orig = rsa;

	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
	rsa.sig_alg = VB2_SIG_INVALID;
	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
	0, "vb2_verify_data() bad sig alg");
	rsa.sig_alg = rsa_orig.sig_alg;

	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
	rsa.hash_alg = VB2_HASH_INVALID;
	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
	0, "vb2_verify_data() bad hash alg");
	rsa.hash_alg = rsa_orig.hash_alg;

	vb2_workbuf_init(&wb, workbuf, 4);
	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
	0, "vb2_verify_data() workbuf too small");
	vb2_workbuf_init(&wb, workbuf, sizeof(workbuf));

	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
	TEST_EQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
	0, "vb2_verify_data() ok");

	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
	sig2->sig_size -= 16;
	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
	0, "vb2_verify_data() wrong sig size");

	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
	TEST_NEQ(vb2_verify_data(test_data, test_size - 1, sig2, &rsa, &wb),
	0, "vb2_verify_data() input buffer too small");

	memcpy(sig2, sig, sizeof(VbSignature) + sig->sig_size);
	vb2_signature_data(sig2)[0] ^= 0x5A;
	TEST_NEQ(vb2_verify_data(test_data, test_size, sig2, &rsa, &wb),
	0, "vb2_verify_data() wrong sig");

	free(sig);
	free(sig2);
	}

	int test_algorithm(int key_algorithm, const char *keys_dir)
	{
	char filename[1024];
	int rsa_len = siglen_map[key_algorithm] * 8;

	VbPrivateKey *private_key = NULL;
	VbPublicKey *public_key = NULL;

	printf("***Testing algorithm: %s\n", algo_strings[key_algorithm]);

	sprintf(filename, "%s/key_rsa%d.pem", keys_dir, rsa_len);
	private_key = PrivateKeyReadPem(filename, key_algorithm);
	if (!private_key) {
	fprintf(stderr, "Error reading private_key: %s\n", filename);
	return 1;
	}

	sprintf(filename, "%s/key_rsa%d.keyb", keys_dir, rsa_len);
	public_key = PublicKeyReadKeyb(filename, key_algorithm, 1);
	if (!public_key) {
	fprintf(stderr, "Error reading public_key: %s\n", filename);
	return 1;
	}

	test_unpack_key(public_key);
	test_unpack_key2(public_key);
	test_verify_data(public_key, private_key);

	if (public_key)
	free(public_key);
	if (private_key)
	free(private_key);

	return 0;
	}

	/* Test only the algorithms we use */
	const int key_algs[] = {
	VB2_ALG_RSA2048_SHA256,
	VB2_ALG_RSA4096_SHA256,
	VB2_ALG_RSA8192_SHA512,
	};

	int main(int argc, char *argv[]) {

	if (argc == 2) {
	int i;

	for (i = 0; i < ARRAY_SIZE(key_algs); i++) {
	if (test_algorithm(key_algs[i], argv[1]))
	return 1;
	}

	} else if (argc == 3 && !strcasecmp(argv[2], "--all")) {
	/* Test all the algorithms */
	int alg;

	for (alg = 0; alg < kNumAlgorithms; alg++) {
	if (test_algorithm(alg, argv[1]))
	return 1;
	}

	} else {
	fprintf(stderr, "Usage: %s <keys_dir> [--all]", argv[0]);
	return -1;
	}

	return gTestSuccess ? 0 : 255;
	}